WO2016185720A1 - Printed matter, printing plate, and method for manufacturing same - Google Patents

Printed matter, printing plate, and method for manufacturing same Download PDF

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Publication number
WO2016185720A1
WO2016185720A1 PCT/JP2016/002435 JP2016002435W WO2016185720A1 WO 2016185720 A1 WO2016185720 A1 WO 2016185720A1 JP 2016002435 W JP2016002435 W JP 2016002435W WO 2016185720 A1 WO2016185720 A1 WO 2016185720A1
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WO
WIPO (PCT)
Prior art keywords
printing plate
ink
printing
printed matter
concave portion
Prior art date
Application number
PCT/JP2016/002435
Other languages
French (fr)
Japanese (ja)
Inventor
健太郎 窪田
邦裕 倉持
Original Assignee
凸版印刷株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 凸版印刷株式会社 filed Critical 凸版印刷株式会社
Priority to JP2017518768A priority Critical patent/JP6809452B2/en
Publication of WO2016185720A1 publication Critical patent/WO2016185720A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/02—Engraving; Heads therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F3/00—Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed
    • B41F3/18—Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed of special construction or for particular purposes
    • B41F3/36—Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed of special construction or for particular purposes for intaglio or heliogravure printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/10—Intaglio printing ; Gravure printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/04—Printing plates or foils; Materials therefor metallic
    • B41N1/06—Printing plates or foils; Materials therefor metallic for relief printing or intaglio printing
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
    • H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns

Definitions

  • the present invention relates to a printed matter formed by forming an ink on a substrate, a printing plate, and a method for producing them.
  • Gravure offset printing is a technique for stably printing a pattern having high resolution and high dimensional accuracy using a coating material having a high viscosity such as various inks, resins, and conductive pastes on the surface of a printing object.
  • the gravure offset printing process is one of transfer printing methods including the following three processes.
  • Step 1 In a recess (pattern part) of an intaglio for gravure offset printing made of glass, resin, metal, etc., by a doctor member (hereinafter also simply referred to as “doctor member”) such as a doctor blade, squeegee or scraper The process of filling ink.
  • doctor member hereinafter also simply referred to as “doctor member”
  • doctor member such as a doctor blade, squeegee or scraper
  • a transfer body for example, a blanket
  • a transfer layer for example, a blanket
  • a transfer layer for example, a blanket
  • the process of transferring the ink film onto the printing surface of the blanket A step of pressure-bonding the transfer body to a substrate to be printed and transferring the ink film remaining on the transfer layer onto the substrate as a printing pattern.
  • Patent Document 1 discloses a method of printing a patterned wiring structure on a frame portion by a manufacturing method of a conductive member for a touch panel having a wiring structure.
  • the present invention has been made in view of such problems, and the object of the present invention is to provide a printed matter and print that can suppress protrusion and blurring caused by ink bias when printing using an intaglio. It is to provide a plate and a manufacturing method thereof.
  • the first aspect of the present invention is: A printed matter comprising a substrate and an ink layer on the substrate, It is a printed matter characterized by having at least one recess at the top.
  • the second aspect of the present invention is: The printed matter according to claim 1, wherein a depth of at least one of the depressions is smaller than a height of the ink layer.
  • the fourth aspect of the present invention is:
  • the ink layer is composed of a plurality of ridges,
  • Each of the ridge-like portions of the ink layer has an asymmetric shape in a cross section perpendicular to the longitudinal direction of the ridge-like portion in the region on the top side of the ridge-like portion with respect to the bottom of the depression.
  • the exposed portion is linear;
  • the printed matter according to claim 3, wherein the minimum value of the line width of the exposed portion is 5 ⁇ m or more and 100 ⁇ m or less.
  • the sixth aspect of the present invention is: The printed matter according to claim 3, wherein the maximum value of a straight line connecting two points on the boundary line defining the exposed portion is 5 ⁇ m or more and 100 ⁇ m or less.
  • the seventh aspect of the present invention is The printed matter according to claim 6, wherein a maximum value of a straight line connecting two points on a boundary line defining the exposed portion is different depending on a width of the ink layer.
  • the eighth aspect of the present invention is The printed matter according to claim 6, wherein the exposed portion occupies 20% to 70% of the area of the ink layer in a top view.
  • the ninth aspect of the present invention provides The printed matter according to claim 1, wherein the ink layer is provided as a wiring layer.
  • the tenth aspect of the present invention provides A printing plate used to transfer ink onto a substrate,
  • the printing plate is characterized in that a concave portion having at least one convex portion at the bottom is formed on the surface.
  • the eleventh aspect of the present invention is The printing plate according to claim 10, wherein the height of at least one of the convex portions is smaller than the depth of the concave portion.
  • the twelfth aspect of the present invention provides The printing plate according to claim 10, wherein a height of at least one of the convex portions is equal to a depth of the concave portion.
  • the thirteenth aspect of the present invention provides The printing plate has a plurality of grooves on the surface of the printing plate base material, Each of the plurality of grooves has an asymmetric shape in a cross section perpendicular to the longitudinal direction of the groove in a region closer to the bottom of the groove than the top of the convex portion. It is a printing plate given in any 1 paragraph.
  • the fourteenth aspect of the present invention provides The top of the convex part is linear, 13.
  • the fifteenth aspect of the present invention provides 13.
  • the sixteenth aspect of the present invention provides The printing plate according to claim 13, wherein the maximum value of a straight line connecting two points on a boundary line defining the top of the convex portion varies depending on the width of the concave portion.
  • the seventeenth aspect of the present invention provides The printing plate according to claim 15 or 16, wherein the convex portion occupies 20% to 70% of the area of the concave portion in a top view.
  • the eighteenth aspect of the present invention provides It is a manufacturing method of printed matter characterized by including the process of transcribe
  • the method for producing the printing plate may include a step of forming the concave portion of the printing plate by cutting with a cutting blade or by etching.
  • FIG. 1st Embodiment of this invention It is a figure shown about ink filling to the printing plate by a doctor member based on 1st Embodiment of this invention. It is a front view which shows the operation
  • FIG. 9 is a cross-sectional view taken along arrow IX-IX in FIG. 8 showing the printing plate in the first embodiment. It is sectional drawing which shows the cross-sectional shape of the ink formed on the to-be-printed body in 1st Embodiment. It is sectional drawing which shows the printing plate base material before the etching in the manufacturing method of the printing plate which concerns on 2nd Embodiment of this invention.
  • FIG. 20 is a cross-sectional view taken along the line XX-XX in FIG. 19 showing the main part of the printing plate in the fifth embodiment. It is sectional drawing which shows the cross-sectional shape of the ink formed on the to-be-printed body in 5th Embodiment. It is sectional drawing which shows the principal part of the printing plate in 6th Embodiment of this invention.
  • FIG. 25 is a sectional view taken along the line XXV-XXV in FIG. 24 showing a printing plate according to the seventh embodiment. It is sectional drawing which shows the cross-sectional shape of the ink formed on the to-be-printed body in 7th Embodiment. It is a perspective view for demonstrating the uneven structure of the printing plate which a prior art employ
  • FIG. 29 is a cross-sectional view taken along arrow XXIX-XXIX in FIG. 28.
  • FIG. 29 is a cross-sectional view taken along arrow XXIX-XXIX in FIG. 28 according to a modification of the present invention.
  • the “ink layer” is a concept that is formed by transferring “ink” to a substrate and includes a “printing pattern”.
  • the “ink layer” is a concept including “electrode”, “wiring (part)”, and “circuit” when the “ink” has conductivity.
  • hole is referred to as an exposed portion of the base material that is formed when a “dent” is formed in the printed matter. That is, “hole” refers to a through-hole of an ink layer on a substrate.
  • FIG. 1 is a view showing ink filling of a printing plate by a doctor member according to the first embodiment of the present invention.
  • 2 is a mechanical configuration of the printing apparatus according to this embodiment and an operation state before transfer to the blanket
  • FIG. 3 is an operation state before transfer to the blanket of the printing apparatus according to this embodiment
  • FIG. It is a front view which shows the operation state after the transfer to the to-be-printed body of the printing apparatus which concerns on embodiment.
  • the printing apparatus 1 includes a blanket 2 and a printing plate (intaglio) 3.
  • the blanket 2 is fixed to the surface of a rotatable blanket cylinder 4 and is arranged so that the ink 6 can be transferred to the printing medium 5.
  • the printing plate 3 is fixed to the upper surface of the platen fixing platen 9 and is disposed at a position where the ink 6 can be transferred to the printing surface of the blanket 2.
  • the blanket cylinder 4 is rotatably supported by a carriage 7, and the carriage 7 is supported by the mount 8 so as to be movable on the mount 8.
  • the substrate 5 is fixed to the upper surface of the base plate 10 for fixing the substrate.
  • Blanket 2 performs transfer printing by transferring ink on the pattern on its surface.
  • the surface of the blanket 2, that is, the printing surface is made of a rubber layer.
  • the rubber material used for the rubber layer various materials known as blankets can be used. These rubber materials are selected according to the type of ink and the solvent used in the ink, and those having a solvent absorbability are suitable.
  • the rubber layer may be provided on the base substrate.
  • the rubber layer made of a rubber material can be cured on the base substrate, or the rubber material on the film can be bonded to the base substrate.
  • the base substrate is not particularly limited as long as it is a flexible film or a thin metal plate because it is attached to the blanket cylinder 4 at the time of printing, but polyester film such as polyethylene terephthalate (PET) because of cost and dimensional stability. Or a polyimide film is suitable.
  • PET polyethylene terephthalate
  • a primer layer and an adhesive layer are provided between the base substrate and the silicone rubber layer as necessary.
  • a cushion layer is provided under the base substrate as necessary. A sponge-like material can be used for the cushion layer.
  • the blanket 2 is fixed to the substantially cylindrical blanket cylinder 4 by winding both ends in the width direction with a mounting tool (not shown).
  • the printing plate 3 will be described in detail later, but a groove corresponding to the wiring is formed on the surface of a metal plate such as a copper plate or a nickel plate, or a glass plate, and the surface on which the groove is formed is rubbed by chromium plating or carbon plating. A film is formed.
  • the groove is formed by cutting, etching, electroforming, sand blasting, or the like.
  • the concave portion of the printing plate 3 is filled with ink at a constant speed by a doctor member (portion indicated by reference numeral 1103 in FIG. 1).
  • the ink 6 can be, for example, a thermosetting and photobaking type conductive ink. If the ink is conductive, a printed matter (wiring board) having an ink layer as a wiring layer can be obtained.
  • the conductive ink is, for example, a metal such as Au, Pt, Ag, Cu, Ni, Cr, Rh, Pd, Zn, Co, Mo, Ru, W, Os, Ir, Fe, Mn, Ge, Sn, Ga, and In. Suitable are fine particles, conductive metal oxide fine particles such as ITO (indium tin oxide), ZnO (zinc oxide), SnO2 (tin oxide), or metal nanowires. In the present embodiment, these can be used as fillers for the ink 6.
  • a conductive silver nanoink in which silver nanoparticles are dispersed in an organic solvent can be used as the conductive ink containing metal fine particles.
  • a conductive polymer whose conductivity has been improved by doping such as conductive polyaniline, conductive polypropyrol, conductive polythiophene (polyethylenedioxythiophene and polystyrenesulfonic acid complex) Etc.) can be used.
  • the solvent in the ink is dodecane or tetradecane.
  • Any solvent can be used in the ink.
  • fast-drying inks are low-boiling solvents (MEK, ethanol, acetone, etc.) that dry at room temperature
  • water-based inks are water (purified water)
  • oil-based inks are oils that do not evaporate at room temperature (aliphatic hydrocarbons, glycol ethers, Higher alcohol etc.) can be used.
  • the material of the blanket 2 having the absorbability can be selected.
  • the printing medium 5 in this embodiment is fixed to the upper surface of the base plate 10 for fixing the base material.
  • the substrate 5 is, for example, a glass plate such as soda lime glass, low alkali borosilicate glass, non-alkali aluminoborosilicate glass, or polyethylene terephthalate (PET), triacetyl cellulose (TAC), polymethyl methacrylate (PMMA), A plastic plate or plastic film made of polycarbonate (PC) or the like is used.
  • PET polyethylene terephthalate
  • TAC triacetyl cellulose
  • PMMA polymethyl methacrylate
  • PC polycarbonate
  • the to-be-printed body 5 can be made into a film made of PET having a thickness of 125 ⁇ m, for example.
  • the printed material 5 can be made of other materials such as sheets (prepreg) made of glass fiber and epoxy resin used for electronic substrates, and other resin materials such as PET, paper, and non-woven fabric. It may be used.
  • the printing medium 5 is not limited to a sheet-like material, and may be hollow or solid, and any plane or curved surface can be used as a printing surface.
  • the printing apparatus 1 includes a control unit 11 in order to control each unit of the printing apparatus 1.
  • a feed mechanism for the blanket cylinder 4, the carriage 7, the printing plate fixing surface plate 9, and the base material fixing surface plate 10 is electrically connected to the control unit 11.
  • the control unit 11 is a well-known computer, and includes a CPU, ROM, RAM, input / output port, storage device, display device, input / output device and the like interconnected by a data bus.
  • the control unit 11 fills the printing plate 3 with ink using the doctor member 1103, feeds and rotates the blanket cylinder 4, cart, according to operator input, inputs from various sensors, and a control program stored in the ROM. 7, movement of the feed mechanism for the platen fixing platen 9 and baseplate fixing platen 10, and operations such as thermal curing and light baking for the ink on the substrate 5 and drying of the blanket 2. It is configured to be able to control operations linked to each other.
  • the ink 6 filled in the printing plate 3 is continuously contacted, Ink 6 is transferred to the printing surface of the blanket 2.
  • the transfer speed to the blanket 2 can be performed, for example, at 50 mm / second.
  • the printing surface of the blanket 2 has an absorbability that can absorb the solvent in the ink 6, so that wetting and spreading of the ink 6 formed on the printing surface of the blanket 2 is suppressed.
  • the blanket 2 to which the ink 6 has been transferred is moved to the installation position of the printing medium 5 by the movement of the carriage 7 in the direction of the arrow B2 in the drawing.
  • the ink formed on the blanket 2 is transferred to the printing surface of the printing medium 5 by the movement of the carriage 7 in the B2 direction and the rotation of the blanket cylinder 4 in the A direction.
  • the rotational speed of the printing surface of the blanket 2 is substantially matched with the moving speed of the carriage 7, whereby the ink 6 is pressed against the substrate 5 and transferred.
  • the transfer speed to the substrate 5 can be performed, for example, at 200 mm / second.
  • the portion of the ink 6 that remains on the printing surface of the blanket 2 without being transferred is removed by, for example, a cleaning roller (not shown).
  • the carriage 7 is moved at the time of transfer, but the relative position between the blanket cylinder 4 and the printing plate fixing platen 9 and the relative position between the blanket cylinder 4 and the base plate fixing platen 10 are as follows. As long as the change can be realized, the printing plate fixing platen 9 and the base plate fixing platen 10 may be moved, and the carriage 7, the printing plate fixing platen 9, and the base plate fixing platen 10 are three. May be moved respectively.
  • the ink 6 transferred onto the substrate 5 is cured.
  • This curing is performed by various means depending on the type and components of the conductive ink to be used, such as baking, heating, natural drying, ultraviolet curing, and cooling (when using a conductive ink containing a thermoplastic material). be able to.
  • heating for example, an infrared heater can be used.
  • the printing apparatus may be provided with a function of drying the solvent absorbed in the blanket 2 during printing standby.
  • Various materials other than those in the printing apparatus 1 can be selected as the material of the printing surface of the blanket 2, the type of ink to be used, and the type of solvent in the ink.
  • the blanket 2 is used while being fixed to the cylindrical blanket cylinder 4, but the shape of the blanket in use may be a curved surface or a plane other than the cylindrical shape.
  • the printed material 5 may be a sheet-like one, such as a resin molded product, and a printed surface having a curved surface.
  • FIG. 5 is a perspective view showing a state before cutting in the printing plate manufacturing method according to the present embodiment
  • FIG. 6 is a perspective view showing a state after cutting in the printing plate manufacturing method according to the present embodiment. is there.
  • the printing plate 3 in this embodiment is formed by cutting the surface of the printing plate base material 20.
  • a printing plate base material 20 is formed by laminating a copper plating layer 22, a peeling layer 23, and a copper ballad layer 24 in this order from the inside on the surface of a cylinder 21 made of, for example, Al or Ni.
  • the printing plate base material 20 is rotated about the axis C, and a cutting blade 30 (see FIG. 7) is applied in the radial direction toward the copper ballad layer 24 so as to perform cutting.
  • a plurality of parallel recesses 25 are formed.
  • the depth of cutting can be set to 10 ⁇ m, for example.
  • the recess 25 may extend in the circumferential direction of the printing plate base material 20 or may extend in the spiral direction.
  • the recesses are extended in the circumferential direction by alternately performing the formation (cutting movement) of the recesses 25 by cutting and the relative movement (feeding movement) along the axis C between the printing plate base material 20 and the cutting blade 30. be able to.
  • a recessed part can be extended in a spiral direction by performing a cutting
  • FIG. 7 is a plan view showing a main part of a cutting blade used for cutting in the present embodiment
  • FIG. 8 is a plan view showing a printing plate in the present embodiment
  • FIG. 9 shows a printing plate in the present embodiment.
  • FIG. 9 is a sectional view taken along arrow IX-IX in FIG.
  • the concave portion 25 having one convex portion at the bottom is formed.
  • the recess 25 is formed using a cutting blade 30 as shown in FIG.
  • the cutting blade 30 has a single nose portion 30a and two oblique portions 30b and 30c sandwiching the nose portion 30a.
  • the oblique portions 30b and 30c extend non-parallel and non-perpendicular to the cutting direction of the cutting blade 30.
  • the cutting blade 30 preferably has at least one skew portion adjacent to the nose portion 30a.
  • the cutting blade 30 performs first cutting on the surface of the printing plate base material 20 to form the groove 26 a, and then the printing plate base material 20 and the cutting blade 30. Are moved relative to each other by a distance (pitch p) smaller than the cut width w of the groove 26a along the direction of the axis C (width direction of the recess 25), and then the printing plate mother is cut by the cutting blade 30.
  • the groove 26b is formed.
  • the concave portion 25 having one convex portion 28 at the bottom is formed.
  • the other two recesses 25 are formed in the same manner.
  • a chromium plating layer (not shown) is formed on the entire surface of the copper ballad layer 24 in order to increase the wear resistance. Then, by peeling the copper ballad layer 24 from the release layer 23, a flat plate 3 as shown in FIG. 8 is obtained.
  • the tip of the convex portion 28 is positioned lower than the upper surface of the printing plate 3. That is, the height h ⁇ b> 1 of the convex portion 28 is smaller than the depth d ⁇ b> 1 of the concave portion 25.
  • FIG. 10 is a cross-sectional view showing the cross-sectional shape of the ink formed on the printing medium in the present embodiment.
  • the printed matter according to the present invention has at least one recess at the top.
  • the depth of at least one of the recesses is smaller than the height of the ink layer 41.
  • the printed matter 40 in which the ink layer 41 is formed on the substrate 5 is obtained by curing and / or baking the ink transferred by the printing apparatus 1 including the printing plate 3 according to the present embodiment. It is done.
  • FIG. 10 is a cross-sectional view showing the cross-sectional shape of the ink formed on the printing medium in the present embodiment.
  • the printed matter according to the present invention has at least one recess at the top.
  • the depth of at least one of the recesses is smaller than the height of the ink layer 41.
  • the printed matter 40 in which the ink layer 41 is formed on the substrate 5 is obtained by curing and / or baking the ink transferred by the printing apparatus 1 including the printing plate 3
  • the thickness of the ink layer 41 after transfer and drying is relatively uniform over the entire area of the ink layer 41 as compared to the ink layer 42 before improvement according to the present invention.
  • the printing plate 3 is formed with the concave portion 25 having the convex portion 28 at the bottom, and the height h1 of the convex portion 28 is smaller than the depth d1 of the concave portion 25. Is used to transfer the ink onto the printing medium 5. Since the concave portion 25 of the printing plate 3 has the convex portion 28 whose height h1 is smaller than the depth d1, it becomes possible to hold a relatively uniform amount of ink over the area of the concave portion 25, and transfer and drying. The thickness of the subsequent ink layer 41 can be made relatively uniform.
  • the printed matter in the present embodiment is a circuit board using conductive ink, the short circuit of the circuit due to the contact of the ink layers 41 adjacent to each other, and the increase in the resistance value of the circuit or the disconnection due to the fading of the ink layer 41.
  • the fear can be suppressed, and the increase in the resistance value of the circuit can be suppressed and the durability can be improved by forming a thick printed layer or solid-coating a relatively large area.
  • FIG. 11 is a cross-sectional view showing a printing plate base material before etching in the printing plate manufacturing method according to the present embodiment.
  • FIG. 12 is a cross-sectional view showing the printing plate base material after the first etching in the printing plate manufacturing method according to the present embodiment, and
  • FIG. 13 shows the first printing plate manufacturing method according to the present embodiment. It is sectional drawing which shows the printing plate base material in which the resist layer was formed after the etching.
  • FIG. 14 is a cross-sectional view showing the printing plate base material after the second etching in the printing plate manufacturing method according to the present embodiment, and
  • FIG. 15 is a printing plate manufactured by the printing plate manufacturing method according to the present embodiment.
  • FIG. 11 is a cross-sectional view showing a printing plate base material before etching in the printing plate manufacturing method according to the present embodiment.
  • FIG. 12 is a cross-sectional view showing the printing plate base material after the first etching in the printing plate manufacturing method according to the present embodiment
  • FIG. 13 shows
  • etching procedure in the second embodiment will be described.
  • a resist layer 131 is formed so as to surround a region where the concave portion 125 is formed on the surface of the flat printing plate base material 120.
  • etching is performed using an etching solution to form a main groove 126a having a predetermined depth in a region sandwiched between the resist layers 131.
  • the resist layer 131 is removed from the printing plate base material 120, and a resist layer 132 is formed leaving a region for forming the convex portion 128 in the main groove 126a.
  • etching is performed again to form two sub-grooves 126 b in the printing plate base material 120.
  • FIG. 15 by removing the resist layer 132 from the printing plate base material 120, the printing plate base material 120 having the concave portion 125 in which one convex portion 128 is formed at the bottom is obtained.
  • a chromium plating layer (not shown) on the entire surface of the printing plate base material 120, a flat printing plate 103 is obtained.
  • the tip of the convex portion 128 is at a position lower than the upper surface of the printing plate base material 120. That is, the height h2 of the convex portion 128 is smaller than the depth d2 of the concave portion 125. Therefore, according to the printing plate, the same effect as in the first embodiment can be obtained.
  • FIG. 16 is a cross-sectional view showing a printing plate according to this embodiment.
  • the concave portion 225 of the printing plate is formed by using a plating method.
  • the plating layers 231a, 231b, and 231c are formed in this order on the surface of the printing plate base material 220 by repeating the plating process using the photoresist layer formation, exposure, plating, and etching while changing the pattern. To do.
  • the plating layers 231a, 231b, and 231c are formed so that their opening areas gradually increase in this order (from bottom to top).
  • the printing plate base material 220 is obtained.
  • a printing plate base material 220 having a similar structure made of metal or resin by a 3D printer instead of plating.
  • a chromium plating layer (not shown) on the entire surface of the printing plate base material 220, a flat printing plate 203 is obtained.
  • the tip of the convex portion 228 is at a position lower than the upper surface of the printing plate base material 220. That is, the height h3 of the convex portion 228 is smaller than the depth d3 of the concave portion 225. Therefore, according to the printing plate 203, the same effect as that of the first embodiment can be obtained.
  • FIG. 17 is a cross-sectional view showing a mold base material and a printing plate in the middle of the manufacturing process according to this embodiment
  • FIG. 18 is a cross-sectional view showing the printing plate according to this embodiment.
  • the printing plate 303 is formed using a mold.
  • plating layers 331 a, 331 b, and the like are formed on the surface of the mold base material 320 by repeating a plating process using formation, exposure, plating, and etching of a photoresist layer.
  • the mold 321 is obtained by forming 331c in this order.
  • a release layer 322 is formed on the entire surface of the mold 321 with a release agent, a plating layer 323 is formed with copper plating, a resin layer 324 is formed on the plating layer 323, and then the release layer 322 is formed.
  • the printing plate 303 is obtained by peeling. As a result, as shown in FIG. 18, it is possible to obtain a printing plate 303 in which convex portions 328 are formed between the grooves 326 a and 326 b of the concave portion 325. It is also possible to obtain a mold 321 having a similar structure made of metal or resin by a 3D printer instead of plating.
  • the tip of the convex portion 328 is at a position lower than the upper surface of the printing plate 303. That is, the height h4 of the convex portion 328 is smaller than the depth d4 of the concave portion 325. Therefore, according to the printing plate 303, the same effect as that of the first embodiment can be obtained.
  • FIG. 19 is a plan view showing a printing plate 403 having three recesses 425.
  • 20 is a cross-sectional view taken along the line XX-XX of FIG. 19 showing the main part of the printing plate in the present embodiment, and
  • FIG. 21 shows the cross-sectional shape of the ink formed on the printing medium in the present embodiment. It is sectional drawing.
  • the printing plate 403 is formed by cutting the surface of a cylindrical printing plate base material 420 similar to that shown in FIG. 5 using the cutting blade 30 shown in FIG. That is, as shown in FIG. 20, first, the cutting blade 30 performs first cutting on the surface of the printing plate base material 420 to form the groove 426a, and then the printing plate base material 420 and the cutting blade.
  • the cutting blade 30 is moved along the direction of the axis C (width direction of the recess 425) by a distance (pitch p) smaller than the cut width w of the groove 426a, and then the printing plate is cut by the cutting blade 30.
  • the groove 426b is formed by cutting the surface of the base material 420 again.
  • the third and fourth grooves 426c and 426d are formed by alternately repeating cutting and feeding movement. As a result, a single concave portion 425 having three convex portions 428 at the bottom is formed.
  • a chromium plating layer (not shown) is formed on the entire surface of the printing plate base material 420 in order to increase the wear resistance. Then, by peeling the copper ballad layer 24 from the release layer 23, a flat plate 403 as shown in FIG. 19 is obtained.
  • an ink layer 441 is formed on the printing medium 5 as shown in FIG.
  • a printed product 440 is obtained.
  • the printed matter 440 has a depth of at least one indented portion that is smaller than the height of the ink layer 441 as shown in the drawing.
  • FIG. 21 shows a cross-sectional shape in a cross section perpendicular to the printing surface of the printing medium 5. As shown, the thickness of the ink layer 441 after transfer and drying is relatively uniform over the entire area of the ink layer 441 compared to the ink layer 442 before improvement according to the present invention.
  • the interval (pitch p) between the grooves 426a, 426b, 426c, and 426d is made smaller than the cut width w of the grooves 426a, 426b, 426c, and 426d.
  • the position is lower than the upper surface of 403. That is, the height h5 of the convex portion 428 is smaller than the depth d5 of the concave portion 425. Therefore, according to the printing plate 403, the same effect as that of the first embodiment can be obtained.
  • the plurality of convex portions 428 are formed inside the single concave portion 425, the area of each concave portion 425 is obtained. The amount of retained ink can be further promoted, and even if the recess 425 has a relatively large area, the possibility of blurring due to ink bias due to the deflection of the doctor member 1103 is suitably suppressed. be able to.
  • the same etching as in the second embodiment described above is performed by forming a plurality of resist layers inside a single recess, so that the height h5 of the protrusion 428 is the same as in the fifth embodiment. It is also possible to create a printing plate smaller than the depth d5 of the concave portion 425, and the same effect as in the fifth embodiment can be obtained.
  • FIG. 22 is a cross-sectional view showing the main part of a printing plate 503 having a recess 525 formed with a plurality of grooves.
  • the printing plate 503 is formed by cutting the surface of a cylindrical printing plate base material 520 similar to that shown in FIG. 5 using the cutting blade 30 shown in FIG.
  • the cutting procedure is basically the same as in the fifth embodiment, but in the sixth embodiment, five grooves 526a, 526b, 526c, 526d, and 526e are formed and the cutting depth of the cutting blade 30 is changed.
  • the depth d61 of the grooves 526a and 526e at both ends of the recess 525, the depth d62 of the second and fourth grooves 526b and 526d from the left in the figure, and the depth of the groove 526c at the center in the figure Let d63 be a different value. The same applies to the structure of other recesses 525 (not shown).
  • the groove depth is d61 ⁇ d62 ⁇ d63 so that the depth of the groove is larger in the center, but the distribution of the groove depth is the viscosity of the ink, the drying speed, and the printing medium. It can be arbitrarily selected according to physical properties such as adhesion.
  • the height of the convex portion 528 (here, the distance from the bottom of the deepest groove 526c) h60 can be changed. It is also possible to change it. Further, the tip of the convex portion 528 is at a position lower than the upper surface of the printing plate 503. That is, the height h60 of the convex portion 528 is smaller than the depth d60 of the concave portion 525 (in this embodiment, the same depth as the depth d63 of the deepest groove 526c).
  • the doctor member 1103 may bend in the large-area concave portion to cause blurring due to ink bias. .
  • the thickness of the ink layer transferred to the printing medium can be increased by increasing the amount of ink to be filled. Uniformity can be imparted.
  • the plurality of grooves formed inside the single recess are symmetrical in the cross section perpendicular to the longitudinal direction of the groove, that is, at least in the region below the top of the protrusion (that is, the printing plate). It has a shape that is perpendicular to the surface of the base material and that passes through the center in the width direction of the groove.
  • each of the plurality of grooves may have an asymmetric shape in a cross section perpendicular to the longitudinal direction of the groove in a region closer to the bottom of the groove than the top of the convex portion.
  • FIG. 23 is a plan view showing a main part of a cutting blade used for cutting in the present embodiment.
  • FIG. 24 is a plan view showing the printing plate in the present embodiment
  • FIG. 25 is a sectional view taken along the line XXV-XXV in FIG. 24 showing the printing plate in the present embodiment.
  • FIG. 26 is a cross-sectional view showing the cross-sectional shape of the ink formed on the printing medium in the present embodiment.
  • the cutting blade 630 used for manufacturing the printing plate 603 (see FIG. 24) in the seventh embodiment includes a single nose portion 630a and two oblique portions 630b and 630c sandwiching the nose portion 630a. And have.
  • the extending directions of the two skewed portions 630b and 630c are different from each other with respect to the cutting direction G of the cutting blade 630, and an angle ⁇ formed by one skewed portion 630b with respect to the cutting direction G is, for example, 20 °.
  • the angle ⁇ formed by the other oblique portion 630c with respect to the cutting direction G is, for example, 70 °.
  • the cutting blade 630 performs first cutting on the surface of the printing plate base material 620 to form a groove 626a, and then the printing plate base material 620 and the cutting blade 630. Are moved relative to each other by a distance (pitch p) smaller than the cut width w of the groove 626a along the direction of the axis C (width direction of the recess 625), and then the printing plate mother is cut by the cutting blade 630.
  • a groove 626b is formed by cutting the surface of the material 620 again.
  • the groove 626c is formed by repeating this cutting movement and feeding movement once again.
  • each of the plurality of grooves 626a, 626b, and 626c has a cross section orthogonal to the longitudinal direction of the groove in the region on the bottom side of the groove with respect to the top of the convex portion 628 (that is, the cross section shown in FIG. 25). In this case, it has an asymmetric shape.
  • an ink layer 641 is formed on the printing medium 5 as shown in FIG.
  • a printed product 640 is obtained.
  • the printed matter 640 has a depth of at least one indented portion smaller than the height of the ink layer 641 as illustrated.
  • the ink layer 641 of the printed matter 640 is composed of a plurality of ridge-shaped portions, and each of the ridge-shaped portions of the ink layer 641 is a region on the top side of the ridge-shaped portion with respect to the bottom of the recessed portion.
  • the cross-section perpendicular to the longitudinal direction of the bowl-shaped portion has an asymmetric shape.
  • FIG. 26 shows a cross-sectional shape in a cross section perpendicular to the printing surface of the printing medium 5.
  • the cross-sectional shape of the ink layer 641 after the transfer and drying is asymmetric corresponding to the cross-sectional shape of the cutting blade 630.
  • the ink layer 641 has a peak portion 641a and two oblique portions 641b and 641c sandwiching the peak portion 641a.
  • the extending directions of the two skew portions 641b and 641c are different from each other with respect to the normal direction H of the printing medium 5, and the angle formed by the one skew portion 641b with respect to the normal direction H is, for example, 20
  • the angle formed by the other skewed portion 641c with respect to the normal direction H falls within a predetermined range from 70 °, for example. For this reason, in the seventh embodiment, it is possible to provide a printed matter 640 having different reflected light intensity depending on the viewing direction.
  • a fine line having a high definition and a uniform shape can be printed over a wide area. More specifically, [2] The printed thin line does not have a disconnection or a short circuit. [3] The film thickness of the printed fine line is stable.
  • Patent Document 2 discloses the application of an overprinting technique using an offset method in pattern formation that avoids pinholes and disconnections, such as thick film printing, fine image, or solid printing. Yes. It is described that the overprinting can prevent breakage of the fine line pattern, pinholes due to clogging of the plate, expansion and contraction of the print pattern, and the like.
  • the ink filled in the concave portion of the printing plate is surely transferred onto the transfer layer having ink peelability. Is required.
  • contact with a transfer body having an ink-peelable transfer layer after the ink is completely filled in the concave portion with a doctor member and the filled ink surface is smoothed. Sometimes it is necessary for the ink surface to be in uniform contact with the transfer layer.
  • the concave portion of the printing plate is formed by a concave portion having a width in the range of about 10 ⁇ m to 5 mm and a depth of about 5 ⁇ m to 20 ⁇ m.
  • the present embodiment is effective for ink filling of the concave portion of the gravure offset printing plate having a concave portion with a width of 100 ⁇ m or more, and has a plurality of convex portions arranged periodically in the concave portion with a width of 100 ⁇ m or more. It is a print version.
  • the ink 6 filled in the concave portion becomes a pattern having an unfilled region in the convex portion, and the printed matter finally obtained is a through hole not filled with the ink 6 Periodically.
  • the height of at least one convex portion is equal to the depth of the concave portion.
  • the maximum value of a straight line connecting two points on the boundary line defining the top of the convex portion is 5 ⁇ m or more and 100 ⁇ m or less. Further, the maximum value may vary depending on the width of the recess.
  • wire width of the top part of a convex part is 5 micrometers or more and 100 micrometers or less. It is desirable that the convex part occupies 20% to 70% of the area of the concave part when viewed from above.
  • the dent portion of the printed material has an exposed portion where the substrate is exposed so that the depth of at least one dent portion is equal to the height of the ink layer.
  • the maximum value of a straight line connecting two points on the boundary line defining the exposed portion is 5 ⁇ m or more and 100 ⁇ m or less. Further, the maximum value may vary depending on the width of the ink layer. And when the said exposed part is linear, it is preferable when exhibiting the effect of this invention that the minimum value of the line width of an exposed part is 5 micrometers or more and 100 micrometers or less.
  • the hole group which is an exposed portion formed on the printed material, occupies an area of 20% to 70% of the area of the wiring (ink layer) in a top view. If it is less than 20%, when the ink 6 is filled into the concave portion of the gravure offset printing plate by the doctor member 1103, there is a problem that the bottom of the concave portion is rubbed or the filling amount is unstable and the printing film thickness becomes thin. The effect of the vacancy group is not seen. In such a case, the resistance value, dielectric constant and the like as the pattern design cannot be obtained. On the other hand, when the area is made larger than 70%, the ratio of the ink portion decreases, and there is a problem that the resistance value becomes too high if used as wiring. In addition, it is necessary to change the shape and ratio of the convex portion depending on the size of the concave portion as shown below.
  • the gravure offset printing plate has a smooth surface. Thereby, it is possible to print without causing ink leakage on the printing plate surface. In addition, it also suppresses abnormalities such as missing doctors.
  • the surface of the printing plate refers to the surface in contact with the doctor member 1103 or the inner surface of the pattern-shaped recess (groove) of the printing plate.
  • the surface of the gravure offset printing plate can be smoothed by rough surface polishing, mirror polishing, or ultra-precision polishing (lapping or polishing).
  • the doctor member 1103 is required to bend to some extent because it is necessary to fill the ink 6 into the concave portion of the printing plate and to scrape the ink 6 on the surface flat portion of the printing plate. Therefore, the doctor member 1103 is desirably a metal such as stainless steel, a resin such as urethane, or a ceramic.
  • FIG. 27 is a perspective view for explaining the concavo-convex structure of the printing plate adopted by the prior art
  • FIG. 28 is a top view for explaining the structure of the printing plate in the eighth embodiment of the present invention.
  • a plate printing plate 1200 whose overhead view is shown in FIG. 27 is 1000 ⁇ m ⁇ 1000 ⁇ m electrode part recess 1211, 500 ⁇ m width wiring part recess 1212, 150 ⁇ m width wiring part recess 1213, 30 ⁇ m width wiring part recess 1214.
  • Plate b The printing plate 1300 whose top view is shown in FIG. 28 is the same as the plate a, but the length of the printed portion is 50% in the electrode portion recess 1311 of 1000 ⁇ m ⁇ 1000 ⁇ m.
  • a group 1321 of elliptical projections having an axis length of 50 ⁇ m and a minor axis length of 30 ⁇ m is formed.
  • a group 1322 of circular convex portions having a diameter of 100 ⁇ m is formed in the concave portion 1312 for the wiring portion having a width of 500 ⁇ m so that the printed portion is 30%.
  • a rectangular convex portion group 1323 of 100 ⁇ m ⁇ 200 ⁇ m is formed so that the printed portion is 70%.
  • the wiring portion recess 1314 having a width of 30 ⁇ m is the same as the a plate.
  • FIG. 29 is a cross-sectional view taken along the arrow XXIX-XXIX of the printing plate 1300 of the b plate in FIG.
  • a group of convex portions 1322 is formed in the wiring portion concave portion 1312. This convex group 1322 prevents the doctor member 1103 from rubbing the bottom of the wiring portion recess 1312. The same applies to the convex group 1321 and the convex group 1323.
  • recesses were formed by etching using a 120 mm ⁇ 120 mm ⁇ 3 mm glass plate.
  • gravure offset printing was performed in order to form a wiring pattern with a conductive silver paste on a polyethylene terephthalate substrate.
  • the polyethylene terephthalate substrate used had a thickness of 125 ⁇ m, a length of 120 mm, and a width of 120 mm.
  • an ink of 8.8 Pa / s was used at an angular velocity of 15 rad / sec with a rheology measuring device.
  • a silicone rubber made by Kinyo Co., Ltd. having a rubber hardness (JIS A) of 45 ° and a rubber thickness of 0.6 mm was used.
  • the doctor member 1103 was a regular type of doctor blade manufactured by MDC.
  • the gravure offset printing device used was a commonly used printing device.
  • the printing conditions were a doctor speed of 50 mm / sec and a transfer body speed of 20 mm / sec.
  • the contact width between the transfer body and the printing plate and the contact width between the transfer body and the polyethylene terephthalate substrate were uniformly 10 mm.
  • the printed wiring board was manufactured by the following process. First, the conductive silver paste was filled into the recesses of the prepared gravure offset printing plate using the doctor blade manufactured by MDC. Next, on the printing plate filled with ink, the transfer body was rotated and moved to form a conductive silver paste film on the silicone rubber. Finally, the transfer body on which the conductive silver paste film was formed was rotated and moved to the polyethylene terephthalate substrate, and the conductive silver paste film was transferred onto the polyethylene terephthalate substrate to form a printed circuit.
  • gravure offset printing was carried out using gravure offset printing plates 1200 and 1300 for the a and b plates, and 20 wiring boards corresponding to the a and b plates were produced.
  • holes were generated at random sizes in the 1000 ⁇ 1000 ⁇ m electrode part pattern.
  • holes were randomly generated in both the 500 ⁇ m width circuit and the 150 ⁇ m width circuit, and when the resistance value was measured, a large variation occurred. There was no air gap in the 30 ⁇ m width circuit, and the resistance value was stable.
  • an electrode part pattern having a hole and a wiring pattern part could be formed at a designed position.
  • the targeted resistance values of the 500 ⁇ m width circuit, 150 ⁇ m width circuit, and 30 ⁇ m width circuit were achieved and stabilized.
  • the gravure offset printing plate of the present embodiment it is possible to obtain a printed pattern with high shape accuracy even with a circuit having a large line width, as with a thin circuit.
  • the effect becomes more significant as the circuit pattern has a relatively wide line width, it is suitable for forming a wiring board in which a thin line circuit and a wide circuit are mixed.
  • the transfer is performed using a flat plate printing plate, but the transfer is not limited thereto, and the transfer may be performed using a cylinder-shaped printing plate.
  • the cutting blades 30 and 630 are used to perform cutting with the cutting blades 30 and 630 having a single nose portion. However, even if cutting is performed with a modified cutting blade having a plurality of nose portions. good.
  • the ink is transferred to the printing medium via the blanket, but the ink may be transferred directly from the printing plate to the printing medium.
  • the print pattern of the ink is formed on the printing medium.
  • the printing medium is removed and printed. It is good also as an aspect which hold
  • the conductivity imparted to the ink can be used for various purposes such as authenticity determination by energizing the printing layer and use as an electric circuit member.
  • the depth of the concave portion of the printing plate is equal to the height of the convex portion, but the present invention is not limited to this.
  • 30 is a cross-sectional view taken along arrow XXIX-XXIX in FIG. 28 according to a modification of the present invention.
  • a printing plate 1400 shown in FIG. 30 is the same as the b plate according to the eighth embodiment except for the shape of the convex portion 1422.
  • those having the same function are denoted by the same reference numerals as those in the eighth embodiment, and description thereof is omitted.
  • a group 1422 of convex portions is formed in the concave portion 1312 for the wiring portion. As shown in FIG. 30, the height of the convex group 1422 is smaller than the depth of the wiring-use concave portion 1312. This convex group 1422 prevents the doctor member 1103 from rubbing the bottom of the wiring portion recess 1312.
  • the printing plate according to any one of the first to seventh embodiments that is, the printing plate in which the depth of the concave portion is larger than the height of the convex portion
  • the printed matter having the holes is manufactured.
  • the printing plate according to the eighth embodiment that is, the printing plate in which the depth of the concave portion is equal to the height of the convex portion
  • a printed matter having a depression at the top (but no exposed portion) is manufactured. Is also possible.

Abstract

The purpose of the present invention is to suppress ink running and blurriness caused by ink imbalance when a print is made using an intaglio plate. This printed matter comprises a substrate and an ink layer on the substrate, wherein the printed matter has at least one indented part in a peak part. In this printed matter, the depth of the at least one indented part may be less than the height of the ink layer, or the indented part(s) may have an exposed portion where the substrate is exposed such that the depth of the at least one indented part is equal to the height of the ink layer.

Description

印刷物、印刷版、およびそれらの製造方法Printed matter, printing plate, and manufacturing method thereof
　本発明は、インキを基材上に形成してなる印刷物、印刷版、およびそれらの製造方法に関するものである。 The present invention relates to a printed matter formed by forming an ink on a substrate, a printing plate, and a method for producing them.
　近年、建材分野、パッケージ分野、出版分野、エレクトロニクス分野など生活系、電気系、情報系さまざまな分野における工業製品の製造方法として、グラビアオフセット印刷を用いるケースが増加している。グラビアオフセット印刷とは、印刷対象物の表面に各種インキ、樹脂、導電ペーストなど粘度の高い塗布材料を用いて、高解像度で高い寸法精度を有するパターンを安定的に印刷するための技術である。 In recent years, the use of gravure offset printing is increasing as a manufacturing method for industrial products in various fields such as the building materials field, packaging field, publishing field, and electronics field. Gravure offset printing is a technique for stably printing a pattern having high resolution and high dimensional accuracy using a coating material having a high viscosity such as various inks, resins, and conductive pastes on the surface of a printing object.
　グラビアオフセット印刷工程は、次の３つの工程からなる転写印刷法の一つである。　
［工程１］ガラス、樹脂、金属などで作製されたグラビアオフセット印刷用凹版の凹部（パターン部）内に、ドクターブレード、スキージまたはスクレーパー等のドクター部材（以下、単に「ドクター部材」とも言う）によってインキを充填する工程。　
［工程２］表面がシリコーンなどの樹脂で被覆された転写層を備える転写体（例えば、ブランケット）を、インキが充填されたグラビアオフセット印刷用凹版に接触させながら回転して、転写層（例えば、ブランケットの印刷面）上にインキ皮膜を転移させる工程。　
［工程３］転写体を基材である被印刷体に圧着し、転写層上に残るインキ皮膜を印刷パターンとして被印刷体上に転写する工程。 The gravure offset printing process is one of transfer printing methods including the following three processes.
[Step 1] In a recess (pattern part) of an intaglio for gravure offset printing made of glass, resin, metal, etc., by a doctor member (hereinafter also simply referred to as “doctor member”) such as a doctor blade, squeegee or scraper The process of filling ink.
[Step 2] A transfer body (for example, a blanket) having a transfer layer whose surface is coated with a resin such as silicone is rotated while being brought into contact with an intaglio for gravure offset printing, and a transfer layer (for example, a blanket) The process of transferring the ink film onto the printing surface of the blanket).
[Step 3] A step of pressure-bonding the transfer body to a substrate to be printed and transferring the ink film remaining on the transfer layer onto the substrate as a printing pattern.
　これらの印刷工程によれば、被印刷体の表面に各種インキ、樹脂、導電ペーストなどの粘度の高い塗布材料を高解像度、高寸法精度でパターン印刷することが可能である。 According to these printing processes, it is possible to pattern-print high-resolution and high-dimensional accuracy coating materials with high viscosity such as various inks, resins, and conductive pastes on the surface of the printing object.
　上記グラビアオフセット印刷法として、例えば特許文献１には、配線構造を有するタッチパネル用導電性部材の製造方法にて、額縁部分へのパターン化された配線構造を印刷する方法が開示されている。 As the gravure offset printing method, for example, Patent Document 1 discloses a method of printing a patterned wiring structure on a frame portion by a manufacturing method of a conductive member for a touch panel having a wiring structure.
特開２０１１－２１０１４８号公報JP 2011-210148 A 特開昭５５－００５８５６号公報JP-A-55-005856
　特許文献１のように凹版である印刷版を用いる方法では、厚い印刷層を形成する場合に、多量のインキを収容することができるように、深さの大きい凹部を用いることが必要である。しかしながら、そのような深い凹部を用いると、基材上に転写されたインキは、被印刷体の印刷面に垂直な断面における偏りが顕著になり、印刷後のインキの流れに起因するインキのはみ出しが生じる。また、比較的大きな面積をベタ塗りする場合に、大面積の凹部内ではドクター部材の撓みによって、インキの偏りに起因するかすれが生じるおそれもある。このグラビアオフセット印刷法を用いて基材上に配線パターンを形成する場合には、このようなインキのはみ出しやかすれは回路の短絡や断線を生じさせ、電気特性を損なう可能性があった。 In the method using a printing plate which is an intaglio plate as in Patent Document 1, it is necessary to use a concave portion having a large depth so that a large amount of ink can be accommodated when a thick printing layer is formed. However, if such deep recesses are used, the ink transferred onto the base material has a noticeable deviation in the cross section perpendicular to the printing surface of the substrate, and the ink sticks out due to the ink flow after printing. Occurs. In addition, when a relatively large area is solidly applied, the doctor member may bend in a large-area recess to cause blurring due to ink bias. When a wiring pattern is formed on a substrate by using this gravure offset printing method, such protrusion or fading of ink may cause a short circuit or disconnection of a circuit and impair electrical characteristics.
　本発明は、このような問題に鑑みてなされたもので、その目的とするところは、凹版を用いて印刷する場合に、インキの偏りに起因するはみ出しやかすれを抑制することができる印刷物、印刷版、およびそれらの製造方法を提供することにある。 The present invention has been made in view of such problems, and the object of the present invention is to provide a printed matter and print that can suppress protrusion and blurring caused by ink bias when printing using an intaglio. It is to provide a plate and a manufacturing method thereof.
　本発明の第１の態様は、　
　基材および前記基材上のインキ層からなる印刷物であって、　
　少なくとも１つの窪み部を頂部に有することを特徴とする印刷物である。 The first aspect of the present invention is:
A printed matter comprising a substrate and an ink layer on the substrate,
It is a printed matter characterized by having at least one recess at the top.
　本発明の第２の態様は、　
　少なくとも１つの前記窪み部の深さが前記インキ層の高さよりも小さいことを特徴とする請求項１に記載の印刷物である。 The second aspect of the present invention is:
The printed matter according to claim 1, wherein a depth of at least one of the depressions is smaller than a height of the ink layer.
　本発明の第３の態様は、　
　前記窪み部は、少なくとも１つの前記窪み部の深さが前記インキ層の高さと等しくなるように、前記基材が露出する露出部分を有することを特徴とする請求項１に記載の印刷物である。 The third aspect of the present invention is:
2. The printed matter according to claim 1, wherein the hollow portion has an exposed portion where the base material is exposed so that a depth of at least one of the hollow portions is equal to a height of the ink layer. .
　本発明の第４の態様は、　
　前記インキ層は、複数条の畝状部分からなり、　
　前記インキ層の畝状部分のそれぞれは、前記窪み部の底部よりも前記畝状部分の頂部側の領域において、前記畝状部分の長手方向に直交する断面において非対称の形状を有することを特徴とする請求項１から３のいずれか１項に記載の印刷物である。 The fourth aspect of the present invention is:
The ink layer is composed of a plurality of ridges,
Each of the ridge-like portions of the ink layer has an asymmetric shape in a cross section perpendicular to the longitudinal direction of the ridge-like portion in the region on the top side of the ridge-like portion with respect to the bottom of the depression. The printed matter according to any one of claims 1 to 3.
　本発明の第５の態様は、　
　前記露出部分は、線状であり、　
　前記露出部分の線幅の最小値は、５μｍ以上１００μｍ以下であることを特徴とする請求項３に記載の印刷物である。 According to a fifth aspect of the present invention,
The exposed portion is linear;
The printed matter according to claim 3, wherein the minimum value of the line width of the exposed portion is 5 μm or more and 100 μm or less.
　本発明の第６の態様は、　
　前記露出部分を規定する境界線上の２点を結ぶ直線の最大値は、５μｍ以上１００μｍ以下であることを特徴とする請求項３に記載の印刷物である。 The sixth aspect of the present invention is:
The printed matter according to claim 3, wherein the maximum value of a straight line connecting two points on the boundary line defining the exposed portion is 5 μm or more and 100 μm or less.
　本発明の第７の態様は、　
　前記露出部分を規定する境界線上の２点を結ぶ直線の最大値は、前記インキ層の幅に応じて異なることを特徴とする請求項６に記載の印刷物である。 The seventh aspect of the present invention is
The printed matter according to claim 6, wherein a maximum value of a straight line connecting two points on a boundary line defining the exposed portion is different depending on a width of the ink layer.
　本発明の第８の態様は、　
　前記露出部分は、上面視で前記インキ層の面積の２０％～７０％を占めていることを特徴とする請求項６または７に記載の印刷物である。 The eighth aspect of the present invention is
The printed matter according to claim 6, wherein the exposed portion occupies 20% to 70% of the area of the ink layer in a top view.
　本発明の第９の態様は、　
　前記インキ層を配線層として備えたことを特徴とする請求項１から８のいずれか１項に記載の印刷物である。 The ninth aspect of the present invention provides
The printed matter according to claim 1, wherein the ink layer is provided as a wiring layer.
　本発明の第１０の態様は、　
　基材上にインキを転写するために用いられる印刷版であって、　
　表面に、少なくとも１つの凸部を底部に有する凹部が形成されることを特徴とする印刷版である。 The tenth aspect of the present invention provides
A printing plate used to transfer ink onto a substrate,
The printing plate is characterized in that a concave portion having at least one convex portion at the bottom is formed on the surface.
　本発明の第１１の態様は、　
　少なくとも１つの前記凸部の高さが前記凹部の深さよりも小さいことを特徴とする請求項１０に記載の印刷版である。 The eleventh aspect of the present invention is
The printing plate according to claim 10, wherein the height of at least one of the convex portions is smaller than the depth of the concave portion.
　本発明の第１２の態様は、　
　少なくとも１つの前記凸部の高さが前記凹部の深さと等しいことを特徴とする請求項１０に記載の印刷版である。 The twelfth aspect of the present invention provides
The printing plate according to claim 10, wherein a height of at least one of the convex portions is equal to a depth of the concave portion.
　本発明の第１３の態様は、　
　前記印刷版は、印刷版母材の表面に複数の溝を有し、　
　前記複数の溝のそれぞれは、前記凸部の頂部よりも前記溝の底部側の領域において、当該溝の長手方向に直交する断面において非対称の形状を有することを特徴とする請求項１０から１２のいずれか１項に記載の印刷版である。 The thirteenth aspect of the present invention provides
The printing plate has a plurality of grooves on the surface of the printing plate base material,
Each of the plurality of grooves has an asymmetric shape in a cross section perpendicular to the longitudinal direction of the groove in a region closer to the bottom of the groove than the top of the convex portion. It is a printing plate given in any 1 paragraph.
　本発明の第１４の態様は、　
　前記凸部の頂部は、線状であり、　
　前記凸部の頂部の線幅の最小値は、５μｍ以上１００μｍ以下であることを特徴とする請求項１２に記載の印刷物である。 The fourteenth aspect of the present invention provides
The top of the convex part is linear,
13. The printed matter according to claim 12, wherein the minimum value of the line width at the top of the convex portion is not less than 5 μm and not more than 100 μm.
　本発明の第１５の態様は、　
　前記凸部の頂部を規定する境界線上の２点を結ぶ直線の最大値は、５μｍ以上１００μｍ以下であることを特徴とする請求項１２に記載の印刷版である。 The fifteenth aspect of the present invention provides
13. The printing plate according to claim 12, wherein the maximum value of a straight line connecting two points on a boundary line defining the top of the convex portion is 5 μm or more and 100 μm or less.
　本発明の第１６の態様は、　
　前記凸部の頂部を規定する境界線上の２点を結ぶ直線の最大値は、前記凹部の幅に応じて異なることを特徴とする請求項１３に記載の印刷版である。 The sixteenth aspect of the present invention provides
The printing plate according to claim 13, wherein the maximum value of a straight line connecting two points on a boundary line defining the top of the convex portion varies depending on the width of the concave portion.
　本発明の第１７の態様は、　
　前記凸部は、上面視で前記凹部の面積の２０％～７０％を占めていることを特徴とする請求項１５または１６に記載の印刷版である。 The seventeenth aspect of the present invention provides
The printing plate according to claim 15 or 16, wherein the convex portion occupies 20% to 70% of the area of the concave portion in a top view.
　本発明の第１８の態様は、　
　請求項１０から１７のいずれか１項に記載の印刷版を用いてインキを前記基材上に転写する工程を含むことを特徴とする印刷物の製造方法である。 The eighteenth aspect of the present invention provides
It is a manufacturing method of printed matter characterized by including the process of transcribe | transferring ink on the said base material using the printing plate of any one of Claim 10 to 17.
　前記印刷版の製造方法は、切削刃による切削によって、または、エッチングによって前記印刷版の前記凹部を形成する工程を含んでもよい。 The method for producing the printing plate may include a step of forming the concave portion of the printing plate by cutting with a cutting blade or by etching.
　以上説明したように、本発明によれば、凹版を用いて印刷する場合に、インキの偏りに起因するはみ出しやかすれを抑制することが可能となる。 As described above, according to the present invention, when printing is performed using an intaglio, it is possible to suppress protrusion and blurring caused by ink bias.
本発明の第１実施形態に係る、ドクター部材による印刷版へのインキ充填について示す図である。It is a figure shown about ink filling to the printing plate by a doctor member based on 1st Embodiment of this invention. 第１実施形態に係る印刷装置の機械的構成及びブランケットへの転写前の動作状態を示す正面図である。It is a front view which shows the operation | movement state before the mechanical structure of the printing apparatus which concerns on 1st Embodiment, and the transfer to a blanket. 第１実施形態に係る印刷装置のブランケットへの転写前の動作状態を示す正面図である。It is a front view which shows the operation state before the transfer to the blanket of the printing apparatus which concerns on 1st Embodiment. 第１実施形態に係る印刷装置の被印刷体への転写後の動作状態を示す正面図である。It is a front view which shows the operation state after the transfer to the to-be-printed body of the printing apparatus which concerns on 1st Embodiment. 第１実施形態に係る印刷版の製造方法における切削加工前の状態を示す斜視図である。It is a perspective view which shows the state before the cutting process in the manufacturing method of the printing plate which concerns on 1st Embodiment. 第１実施形態に係る印刷版の製造方法における切削加工後の状態を示す斜視図である。It is a perspective view which shows the state after the cutting process in the manufacturing method of the printing plate which concerns on 1st Embodiment. 第１実施形態における切削加工に用いられる切削刃の要部を示す平面図である。It is a top view which shows the principal part of the cutting blade used for the cutting process in 1st Embodiment. 第１実施形態における印刷版を示す平面図である。It is a top view which shows the printing plate in 1st Embodiment. 第１実施形態における印刷版を示す図８のＩＸ－ＩＸ矢視断面図である。FIG. 9 is a cross-sectional view taken along arrow IX-IX in FIG. 8 showing the printing plate in the first embodiment. 第１実施形態における被印刷体上に形成されたインキの断面形状を示す断面図である。It is sectional drawing which shows the cross-sectional shape of the ink formed on the to-be-printed body in 1st Embodiment. 本発明の第２実施形態に係る印刷版の製造方法におけるエッチング前の印刷版母材を示す断面図である。It is sectional drawing which shows the printing plate base material before the etching in the manufacturing method of the printing plate which concerns on 2nd Embodiment of this invention. 第２実施形態に係る印刷版の製造方法における１回目のエッチング後の印刷版母材を示す断面図である。It is sectional drawing which shows the printing plate base material after the 1st etching in the manufacturing method of the printing plate which concerns on 2nd Embodiment. 第２実施形態に係る印刷版の製造方法における１回目のエッチング後にレジスト層を形成した印刷版母材を示す断面図である。It is sectional drawing which shows the printing plate base material in which the resist layer was formed after the 1st etching in the manufacturing method of the printing plate which concerns on 2nd Embodiment. 第２実施形態に係る印刷版の製造方法における２回目のエッチング後の印刷版母材を示す断面図である。It is sectional drawing which shows the printing plate base material after the 2nd etching in the manufacturing method of the printing plate which concerns on 2nd Embodiment. 第２実施形態に係る印刷版の製造方法によって製造された印刷版を示す断面図である。It is sectional drawing which shows the printing plate manufactured by the manufacturing method of the printing plate which concerns on 2nd Embodiment. 本発明の第３実施形態に係る印刷版を示す断面図である。It is sectional drawing which shows the printing plate which concerns on 3rd Embodiment of this invention. 本発明の第４実施形態に係る製造工程の途中の型母材及び印刷版を示す断面図である。It is sectional drawing which shows the mold base material and printing plate in the middle of the manufacturing process which concerns on 4th Embodiment of this invention. 第４実施形態に係る印刷版を示す断面図である。It is sectional drawing which shows the printing plate which concerns on 4th Embodiment. 本発明の第５実施形態における印刷版を示す平面図である。It is a top view which shows the printing plate in 5th Embodiment of this invention. 第５実施形態における印刷版の要部を示す図１９のＸＸ－ＸＸ矢視断面図である。FIG. 20 is a cross-sectional view taken along the line XX-XX in FIG. 19 showing the main part of the printing plate in the fifth embodiment. 第５実施形態における被印刷体上に形成されたインキの断面形状を示す断面図である。It is sectional drawing which shows the cross-sectional shape of the ink formed on the to-be-printed body in 5th Embodiment. 本発明の第６実施形態における印刷版の要部を示す断面図である。It is sectional drawing which shows the principal part of the printing plate in 6th Embodiment of this invention. 本発明の第７実施形態における切削加工に用いられる切削刃の要部を示す平面図である。It is a top view which shows the principal part of the cutting blade used for the cutting process in 7th Embodiment of this invention. 第７実施形態における印刷版を示す平面図である。It is a top view which shows the printing plate in 7th Embodiment. 第７実施形態における印刷版を示す図２４のＸＸＶ－ＸＸＶ矢視断面図である。FIG. 25 is a sectional view taken along the line XXV-XXV in FIG. 24 showing a printing plate according to the seventh embodiment. 第７実施形態における被印刷体上に形成されたインキの断面形状を示す断面図である。It is sectional drawing which shows the cross-sectional shape of the ink formed on the to-be-printed body in 7th Embodiment. 従来技術が採用する印刷版の凹凸構造を説明するための斜視図である。It is a perspective view for demonstrating the uneven structure of the printing plate which a prior art employ | adopts. 本発明の第８実施形態における印刷版の構造を説明するための上面視の図である。It is a figure of the top view for demonstrating the structure of the printing plate in 8th Embodiment of this invention. 図２８のＸＸＩＸ－ＸＸＩＸ矢視断面図である。FIG. 29 is a cross-sectional view taken along arrow XXIX-XXIX in FIG. 28. 本発明の変形例に係る、図２８のＸＸＩＸ－ＸＸＩＸ矢視断面図である。FIG. 29 is a cross-sectional view taken along arrow XXIX-XXIX in FIG. 28 according to a modification of the present invention.
　以下、図１から図３０を参照しながら、本発明の実施形態について説明する。なお、本発明の実施形態は、以下に記載する実施形態に限定されうるものではなく、当業者の知識に基づいて設計の変更などの変形を加えることも可能であり、そのような変形が加えられた実施形態も本発明の実施形態の範囲に含まれうるものである。 Hereinafter, embodiments of the present invention will be described with reference to FIGS. The embodiments of the present invention are not limited to the embodiments described below, and modifications such as design changes can be added based on the knowledge of those skilled in the art. The described embodiments can also be included in the scope of the embodiments of the present invention.
　（定義）　
　本明細書および特許請求の範囲の記載において、「インキ」とは、ブランケット等の転写体の転写層への転移により形成される「インキ皮膜」を含む概念である。また、「インキ層」は、「インキ」が基材に転写されることで形成され、「印刷パターン」を含む概念である。さらに「インキ層」は、「インキ」が導電性を有する場合、「電極」、「配線（部）」、および「回路」を含む概念である。 (Definition)
In the description of the present specification and claims, “ink” is a concept including “ink film” formed by transfer of a transfer body such as a blanket to a transfer layer. The “ink layer” is a concept that is formed by transferring “ink” to a substrate and includes a “printing pattern”. Furthermore, the “ink layer” is a concept including “electrode”, “wiring (part)”, and “circuit” when the “ink” has conductivity.
　本明細書および特許請求の範囲の記載において、「印刷物」とは、基材および基材上のインキ層からなるものを指すものとして参照され、「印刷回路」や「配線基板」を含む概念である。 In the description of the present specification and claims, “printed material” is referred to as a material comprising a base material and an ink layer on the base material, and is a concept including “printed circuit” and “wiring board”. is there.
　本明細書において、「空孔」とは、印刷物に「窪み」が形成されるときにできる基材の露出部分を指すものとして参照される。すなわち、「空孔」とは、基材上のインキ層の貫通孔を指す。 In this specification, the “hole” is referred to as an exposed portion of the base material that is formed when a “dent” is formed in the printed matter. That is, “hole” refers to a through-hole of an ink layer on a substrate.
　（第１実施形態）　
　図１は本発明の第１実施形態に係る、ドクター部材による印刷版へのインキ充填について示す図である。また、図２は本実施形態に係る印刷装置の機械的構成及びブランケットへの転写前の動作状態、図３は本実施形態に係る印刷装置のブランケットへの転写前の動作状態、図４は本実施形態に係る印刷装置の被印刷体への転写後の動作状態、をそれぞれ示す正面図である。 (First embodiment)
FIG. 1 is a view showing ink filling of a printing plate by a doctor member according to the first embodiment of the present invention. 2 is a mechanical configuration of the printing apparatus according to this embodiment and an operation state before transfer to the blanket, FIG. 3 is an operation state before transfer to the blanket of the printing apparatus according to this embodiment, and FIG. It is a front view which shows the operation state after the transfer to the to-be-printed body of the printing apparatus which concerns on embodiment.
　図１ないし図４において、印刷装置１は、ブランケット２と、印刷版（凹版）３とを備えている。ブランケット２は、回転可能なブランケット胴４の表面に固定されており、被印刷体５にインキ６を転写可能に配置されている。印刷版３は、印刷版固定用定盤９の上面に固定され、ブランケット２の印刷面にインキ６を転写可能な位置に配置されている。ブランケット胴４は回転可能に台車７に支持されており、台車７は架台８上を移動可能に架台８に支持されている。被印刷体５は、基材固定用定盤１０の上面に固定されている。 1 to 4, the printing apparatus 1 includes a blanket 2 and a printing plate (intaglio) 3. The blanket 2 is fixed to the surface of a rotatable blanket cylinder 4 and is arranged so that the ink 6 can be transferred to the printing medium 5. The printing plate 3 is fixed to the upper surface of the platen fixing platen 9 and is disposed at a position where the ink 6 can be transferred to the printing surface of the blanket 2. The blanket cylinder 4 is rotatably supported by a carriage 7, and the carriage 7 is supported by the mount 8 so as to be movable on the mount 8. The substrate 5 is fixed to the upper surface of the base plate 10 for fixing the substrate.
　ブランケット２は、その表面でパターン上のインキの授受を行うことにより転写印刷を行う。ブランケット２の表面すなわち印刷面はゴム層からなる。このゴム層として用いられるゴム材料としては、ブランケットとして公知の各種の材料を用いることができる。これらのゴム材料は、インキ及びインキに用いられる溶剤の種類に対応して選択され、溶剤吸収性のあるものが好適である。 Blanket 2 performs transfer printing by transferring ink on the pattern on its surface. The surface of the blanket 2, that is, the printing surface is made of a rubber layer. As the rubber material used for the rubber layer, various materials known as blankets can be used. These rubber materials are selected according to the type of ink and the solvent used in the ink, and those having a solvent absorbability are suitable.
　ゴム層単独でブランケット２とすることも可能であるが、ゴム層はベース基材の上に設けてもよい。なお、ゴム材料からなるゴム層は、ベース基材上でゴム材料を硬化させることも、フィルム上のゴム材料をベース基材と貼りあわせることも可能である。ベース基材としては、印刷時にブランケット胴４に取り付けられることから可撓性のあるフィルム又は金属薄板であれば種類は問わないが、コスト及び寸法安定性からポリエチレンテレフタレート（ＰＥＴ）などのポリエステル系フィルム、あるいはポリイミドフィルムが好適である。また、ベース基材とシリコーンゴム層の間には、必要に応じてプライマー層や接着層が設けられる。また、ベース基材の下には必要に応じてクッション層が設けられる。クッション層としてはスポンジ状の材料を用いることができる。ブランケット２は、その幅方向の両端部を不図示の取付器具によって巻き締めることによって、略円筒形のブランケット胴４に固定される。 It is possible to use the rubber layer alone to form the blanket 2, but the rubber layer may be provided on the base substrate. The rubber layer made of a rubber material can be cured on the base substrate, or the rubber material on the film can be bonded to the base substrate. The base substrate is not particularly limited as long as it is a flexible film or a thin metal plate because it is attached to the blanket cylinder 4 at the time of printing, but polyester film such as polyethylene terephthalate (PET) because of cost and dimensional stability. Or a polyimide film is suitable. Moreover, a primer layer and an adhesive layer are provided between the base substrate and the silicone rubber layer as necessary. Further, a cushion layer is provided under the base substrate as necessary. A sponge-like material can be used for the cushion layer. The blanket 2 is fixed to the substantially cylindrical blanket cylinder 4 by winding both ends in the width direction with a mounting tool (not shown).
　印刷版３は、詳細は後述するが、配線に対応する溝を銅板、ニッケル版などの金属版、あるいはガラス版の表面に形成し、溝を形成した表面にクロムめっきやカーボンめっきによる耐擦性皮膜を形成してなる。当該溝は、切削加工、エッチング法、電鋳法、サンドブラスト法などにより形成される。この印刷版３の凹部に対して、ドクター部材（図１において符号１１０３で示される部分）によって一定の速度でインキを充填する。 The printing plate 3 will be described in detail later, but a groove corresponding to the wiring is formed on the surface of a metal plate such as a copper plate or a nickel plate, or a glass plate, and the surface on which the groove is formed is rubbed by chromium plating or carbon plating. A film is formed. The groove is formed by cutting, etching, electroforming, sand blasting, or the like. The concave portion of the printing plate 3 is filled with ink at a constant speed by a doctor member (portion indicated by reference numeral 1103 in FIG. 1).
　インキ６は、例えば、熱硬化性かつ光焼成型の導電性インキを用いることができる。インキが導電性であれば、インキ層を配線層として備えた印刷物（配線基板）が得られる。導電性インキは、例えばＡｕ、Ｐｔ、Ａｇ、Ｃｕ、Ｎｉ、Ｃｒ、Ｒｈ、Ｐｄ、Ｚｎ、Ｃｏ、Ｍｏ、Ｒｕ、Ｗ、Ｏｓ、Ｉｒ、Ｆｅ、Ｍｎ、Ｇｅ、Ｓｎ、Ｇａ、Ｉｎ等の金属微粒子、ＩＴＯ（酸化インジウムスズ）、ＺｎＯ（酸化亜鉛）、ＳｎＯ２（酸化スズ）などの導電性金属酸化物微粒子、あるいは金属ナノワイヤを含むものが好適である。本実施形態では、これらをインキ６のフィラーとして用いることが可能である。金属微粒子を含む導電性インキとしては、例えば銀ナノ粒子を有機溶媒に分散させてなる導電性銀ナノインクを用いることができる。 The ink 6 can be, for example, a thermosetting and photobaking type conductive ink. If the ink is conductive, a printed matter (wiring board) having an ink layer as a wiring layer can be obtained. The conductive ink is, for example, a metal such as Au, Pt, Ag, Cu, Ni, Cr, Rh, Pd, Zn, Co, Mo, Ru, W, Os, Ir, Fe, Mn, Ge, Sn, Ga, and In. Suitable are fine particles, conductive metal oxide fine particles such as ITO (indium tin oxide), ZnO (zinc oxide), SnO2 (tin oxide), or metal nanowires. In the present embodiment, these can be used as fillers for the ink 6. As the conductive ink containing metal fine particles, for example, a conductive silver nanoink in which silver nanoparticles are dispersed in an organic solvent can be used.
　作成するパターンが透明電極層である場合には、ドーピング等で導電率を向上させた導電性ポリマー、例えば導電性ポリアニリン、導電性ポリプロピロール、導電性ポリチオフェン（ポリエチレンジオキシチオフェンとポリスチレンスルホン酸の錯体など）を含むインキを用いることができる。 When the pattern to be formed is a transparent electrode layer, a conductive polymer whose conductivity has been improved by doping, such as conductive polyaniline, conductive polypropyrol, conductive polythiophene (polyethylenedioxythiophene and polystyrenesulfonic acid complex) Etc.) can be used.
　上記導電性銀ナノインクでは、インキ中の溶剤はドデカン、テトラデカンである。インキ中の溶剤は任意のものを用いることができる。例えば、速乾性インクでは常温で乾燥する沸点の低い溶剤（ＭＥＫ、エタノール、アセトンなど）、水性インクでは水（精製水）、オイル系インクでは常温で蒸発しないオイル（脂肪族炭化水素、グリコールエーテル、高級アルコールなど）を用いることが可能である。溶剤の種類に応じて、その吸収性を有するブランケット２の材料を選択することができる。 In the conductive silver nano ink, the solvent in the ink is dodecane or tetradecane. Any solvent can be used in the ink. For example, fast-drying inks are low-boiling solvents (MEK, ethanol, acetone, etc.) that dry at room temperature, water-based inks are water (purified water), and oil-based inks are oils that do not evaporate at room temperature (aliphatic hydrocarbons, glycol ethers, Higher alcohol etc.) can be used. Depending on the type of solvent, the material of the blanket 2 having the absorbability can be selected.
　本実施形態における被印刷体５は、基材固定用定盤１０の上面に固定されている。被印刷体５は、例えば、ソーダ石灰ガラス、低アルカリ硼珪酸ガラス、無アルカリアルミノ硼珪酸ガラスなどのガラス板、あるいはポリエチレンテレフタレート（ＰＥＴ）、トリアセチルセルロース（ＴＡＣ）、ポリメチルメタクリレート（ＰＭＭＡ）、ポリカーボネート（ＰＣ）などからなるプラスチック板、プラスチックフィルムが用いられる。被印刷体５は、例えば、厚さ１２５μｍのＰＥＴ製のフィルムとすることができる。なお被印刷体５としては他の材料、例えば電子基板に使われているガラス繊維とエポキシ系樹脂からなるシート（プリプレグ）を用いることができ、またＰＥＴなどの他の樹脂材料、紙、不織布を用いても良い。被印刷体５はシート状の材料に限られず、中空又は中実のいずれでも良く、また任意の平面又は曲面を印刷面とすることができる。 The printing medium 5 in this embodiment is fixed to the upper surface of the base plate 10 for fixing the base material. The substrate 5 is, for example, a glass plate such as soda lime glass, low alkali borosilicate glass, non-alkali aluminoborosilicate glass, or polyethylene terephthalate (PET), triacetyl cellulose (TAC), polymethyl methacrylate (PMMA), A plastic plate or plastic film made of polycarbonate (PC) or the like is used. The to-be-printed body 5 can be made into a film made of PET having a thickness of 125 μm, for example. The printed material 5 can be made of other materials such as sheets (prepreg) made of glass fiber and epoxy resin used for electronic substrates, and other resin materials such as PET, paper, and non-woven fabric. It may be used. The printing medium 5 is not limited to a sheet-like material, and may be hollow or solid, and any plane or curved surface can be used as a printing surface.
　また、印刷装置１は、印刷装置１の各部を制御するために、制御部１１を備える。ブランケット胴４、台車７、印刷版固定用定盤９、基材固定用定盤１０のための送り機構は、制御部１１に電気的に接続されている。制御部１１は周知のコンピュータであって、データバスによって相互接続されたＣＰＵ、ＲＯＭ、ＲＡＭ、入出力ポート、記憶装置、表示装置及び入出力装置等を含むものである。制御部１１はオペレータの操作入力、各種センサ類からの入力、及びＲＯＭに格納された制御プログラムに従って、ドクター部材１１０３を用いた印刷版３へのインキ充填、ブランケット胴４の送り回転及び移動、台車７の移動、印刷版固定用定盤９、基材固定用定盤１０のための送り機構の動作、並びに被印刷体５上のインキに対する熱硬化、光焼成などの動作及びブランケット２に対する乾燥の動作を連繋して制御することが可能に構成されている。 In addition, the printing apparatus 1 includes a control unit 11 in order to control each unit of the printing apparatus 1. A feed mechanism for the blanket cylinder 4, the carriage 7, the printing plate fixing surface plate 9, and the base material fixing surface plate 10 is electrically connected to the control unit 11. The control unit 11 is a well-known computer, and includes a CPU, ROM, RAM, input / output port, storage device, display device, input / output device and the like interconnected by a data bus. The control unit 11 fills the printing plate 3 with ink using the doctor member 1103, feeds and rotates the blanket cylinder 4, cart, according to operator input, inputs from various sensors, and a control program stored in the ROM. 7, movement of the feed mechanism for the platen fixing platen 9 and baseplate fixing platen 10, and operations such as thermal curing and light baking for the ink on the substrate 5 and drying of the blanket 2. It is configured to be able to control operations linked to each other.
　（印刷方法）　
　次に、以上のとおり構成された印刷装置１を用いた印刷方法について説明する。初期状態及び前印刷工程の終了状態においては、図２に示されるように台車７は図中右側に停車した状態である。 (Printing method)
Next, a printing method using the printing apparatus 1 configured as described above will be described. In the initial state and the end state of the preprinting step, the carriage 7 is in a state of stopping on the right side in the drawing as shown in FIG.
　先ず、図１に示すように、印刷版３上にインキ６を乗せ、ドクター部材１１０３にてインキ６を一定の圧力で図１中の矢印の方向に転がしながら印刷版３上を移動させることで、印刷版３のパターン部（凹部）２５内にインキ６を充填する。ドクター部材１１０３によりインキを充填する速度は、例えば、１５０ｍｍ／秒である。 First, as shown in FIG. 1, the ink 6 is put on the printing plate 3, and the doctor member 1103 moves the ink 6 on the printing plate 3 while rolling it in the direction of the arrow in FIG. The ink 6 is filled into the pattern portion (concave portion) 25 of the printing plate 3. The speed at which the ink is filled by the doctor member 1103 is, for example, 150 mm / second.
　次に、図３に示すように、台車７のＢ１方向への移動およびブランケット胴４の図中矢印Ａ方向の回転により、印刷版３に充填されたインキ６に連続的に接触することによって、ブランケット２の印刷面にはインキ６が転写される。ブランケット２への転写速度は、例えば、５０ｍｍ／秒で行うことができる。インキ６が溶剤を含む場合、ブランケット２の印刷面が、インキ６内の溶剤を吸収可能な吸収性を有するため、ブランケット２の印刷面に形成されたインキ６の濡れ広がりが抑制される。その後、台車７の図中矢印Ｂ２方向への移動により、インキ６が転写されたブランケット２は、被印刷体５の設置位置まで移動される。 Next, as shown in FIG. 3, by continuously moving the carriage 7 in the B1 direction and rotating the blanket cylinder 4 in the direction of the arrow A in the drawing, the ink 6 filled in the printing plate 3 is continuously contacted, Ink 6 is transferred to the printing surface of the blanket 2. The transfer speed to the blanket 2 can be performed, for example, at 50 mm / second. When the ink 6 contains a solvent, the printing surface of the blanket 2 has an absorbability that can absorb the solvent in the ink 6, so that wetting and spreading of the ink 6 formed on the printing surface of the blanket 2 is suppressed. Thereafter, the blanket 2 to which the ink 6 has been transferred is moved to the installation position of the printing medium 5 by the movement of the carriage 7 in the direction of the arrow B2 in the drawing.
　図４に示すように、台車７のＢ２方向への移動およびブランケット胴４のＡ方向の回転により、ブランケット２上に形成されたインキは、被印刷体５の印刷面に転写される。ブランケット２の印刷面の回転速度は、台車７の移動速度と略一致させられており、これによってインキ６が被印刷体５に押し付けられて転写される。被印刷物５への転写速度は、例えば、２００ｍｍ／秒で行うことができる。転写されずにブランケット２の印刷面に残ったインキ６の部分は、例えば、不図示のクリーニングローラーで除去される。なお、本実施形態では転写の際に台車７を移動させたが、ブランケット胴４と印刷版固定用定盤９との相対位置、ブランケット胴４と基材固定用定盤１０との相対位置の変化を実現できる限り、印刷版固定用定盤９、基材固定用定盤１０を移動させても良く、台車７、印刷版固定用定盤９、および基材固定用定盤１０の３つをそれぞれ移動させても良い。 As shown in FIG. 4, the ink formed on the blanket 2 is transferred to the printing surface of the printing medium 5 by the movement of the carriage 7 in the B2 direction and the rotation of the blanket cylinder 4 in the A direction. The rotational speed of the printing surface of the blanket 2 is substantially matched with the moving speed of the carriage 7, whereby the ink 6 is pressed against the substrate 5 and transferred. The transfer speed to the substrate 5 can be performed, for example, at 200 mm / second. The portion of the ink 6 that remains on the printing surface of the blanket 2 without being transferred is removed by, for example, a cleaning roller (not shown). In this embodiment, the carriage 7 is moved at the time of transfer, but the relative position between the blanket cylinder 4 and the printing plate fixing platen 9 and the relative position between the blanket cylinder 4 and the base plate fixing platen 10 are as follows. As long as the change can be realized, the printing plate fixing platen 9 and the base plate fixing platen 10 may be moved, and the carriage 7, the printing plate fixing platen 9, and the base plate fixing platen 10 are three. May be moved respectively.
　その後、被印刷体５上に転写されたインキ６は硬化される。この硬化は、例えば、焼成、加熱、自然乾燥、紫外線硬化、冷却（熱可塑性材料を含む導電性インキを用いる場合）など、使用する導電性インキの種類及び成分に応じた各種の手段によって実行することができる。加熱による場合には、例えば、赤外線ヒータを用いることができる。このようにして、印刷物が得られる。尚、ブランケット２の膨潤量が所定の基準値に達すると、印刷待機時にブランケット２に吸収された溶剤が乾燥させられる機能を印刷装置に備えても良い。 Thereafter, the ink 6 transferred onto the substrate 5 is cured. This curing is performed by various means depending on the type and components of the conductive ink to be used, such as baking, heating, natural drying, ultraviolet curing, and cooling (when using a conductive ink containing a thermoplastic material). be able to. In the case of heating, for example, an infrared heater can be used. In this way, a printed matter is obtained. Note that when the swelling amount of the blanket 2 reaches a predetermined reference value, the printing apparatus may be provided with a function of drying the solvent absorbed in the blanket 2 during printing standby.
　ブランケット２の印刷面の材質、使用するインキの種類及びインキ内の溶剤の種類は、上記印刷装置１におけるもの以外の各種のものを選択することができる。 Various materials other than those in the printing apparatus 1 can be selected as the material of the printing surface of the blanket 2, the type of ink to be used, and the type of solvent in the ink.
　ブランケット２は、円筒形のブランケット胴４に固定して使用したが、使用の際のブランケットの形状は円筒形以外の曲面や平面であっても良い。被印刷体５はシート状のほか樹脂成形品などのように、印刷面が曲面であるものであっても良い。 The blanket 2 is used while being fixed to the cylindrical blanket cylinder 4, but the shape of the blanket in use may be a curved surface or a plane other than the cylindrical shape. The printed material 5 may be a sheet-like one, such as a resin molded product, and a printed surface having a curved surface.
　（印刷版の形成）　
　図５は本実施形態に係る印刷版の製造方法における切削加工前の状態を示す斜視図であり、図６は本実施形態に係る印刷版の製造方法における切削加工後の状態を示す斜視図である。本実施形態における印刷版３は、印刷版母材２０の表面に対する切削加工により形成される。図５において、印刷版母材２０は、例えばＡｌ、Ｎｉからなるシリンダー２１の表面に、内側から順に、銅めっき層２２、剥離層２３及び銅バラード層２４を積層して形成してなる。 (Formation of printing plate)
FIG. 5 is a perspective view showing a state before cutting in the printing plate manufacturing method according to the present embodiment, and FIG. 6 is a perspective view showing a state after cutting in the printing plate manufacturing method according to the present embodiment. is there. The printing plate 3 in this embodiment is formed by cutting the surface of the printing plate base material 20. In FIG. 5, a printing plate base material 20 is formed by laminating a copper plating layer 22, a peeling layer 23, and a copper ballad layer 24 in this order from the inside on the surface of a cylinder 21 made of, for example, Al or Ni.
　図６において、印刷版母材２０は軸Ｃを軸として回転させられ、その銅バラード層２４に向けて径方向に切削刃３０（図７参照）を作用させて切削を行わせることで、互いに平行な複数の凹部２５が形成される。切削の深さは、例えば１０μｍとすることができる。凹部２５は印刷版母材２０の周方向に延在していても良く、また、螺旋方向に延在していても良い。切削による凹部２５の形成（切り込み移動）と、印刷版母材２０と切削刃３０との軸Ｃに沿った相対移動（送り移動）とを交互に行うことで、凹部を周方向に延在させることができる。また、切り込み移動と送り移動とを同時かつ連続的に行うことで、凹部を螺旋方向に延在させることができる。軸Ｃに向かう切削刃の切り込み深さを無段階又は複数段階で変化させることで、凹部２５の幅を変化させることも可能である。 In FIG. 6, the printing plate base material 20 is rotated about the axis C, and a cutting blade 30 (see FIG. 7) is applied in the radial direction toward the copper ballad layer 24 so as to perform cutting. A plurality of parallel recesses 25 are formed. The depth of cutting can be set to 10 μm, for example. The recess 25 may extend in the circumferential direction of the printing plate base material 20 or may extend in the spiral direction. The recesses are extended in the circumferential direction by alternately performing the formation (cutting movement) of the recesses 25 by cutting and the relative movement (feeding movement) along the axis C between the printing plate base material 20 and the cutting blade 30. be able to. Moreover, a recessed part can be extended in a spiral direction by performing a cutting | disconnection movement and a feed movement simultaneously and continuously. It is also possible to change the width of the concave portion 25 by changing the cutting depth of the cutting blade toward the axis C in a stepless manner or in a plurality of steps.
　図７は本実施形態における切削加工に用いられる切削刃の要部を示す平面図であり、図８は本実施形態における印刷版を示す平面図であり、図９は本実施形態における印刷版を示す図８のＩＸ－ＩＸ矢視断面図である。本実施形態では、底部に１つの凸部を有する凹部２５が形成される。凹部２５の形成は、図７に示すような切削刃３０を用いて行われる。切削刃３０は、単一のノーズ部３０ａと、これを挟む２つの斜行部３０ｂ、３０ｃとを有する。斜行部３０ｂ、３０ｃは、切削刃３０の切り込み方向と非平行かつ非垂直に延在する。切削刃３０は、ノーズ部３０ａに隣接する少なくとも１つの斜行部を有するのが好適である。 FIG. 7 is a plan view showing a main part of a cutting blade used for cutting in the present embodiment, FIG. 8 is a plan view showing a printing plate in the present embodiment, and FIG. 9 shows a printing plate in the present embodiment. FIG. 9 is a sectional view taken along arrow IX-IX in FIG. In the present embodiment, the concave portion 25 having one convex portion at the bottom is formed. The recess 25 is formed using a cutting blade 30 as shown in FIG. The cutting blade 30 has a single nose portion 30a and two oblique portions 30b and 30c sandwiching the nose portion 30a. The oblique portions 30b and 30c extend non-parallel and non-perpendicular to the cutting direction of the cutting blade 30. The cutting blade 30 preferably has at least one skew portion adjacent to the nose portion 30a.
　図９に示されるように、まず切削刃３０によって印刷版母材２０の表面に対して第１の切削を行うことで、溝２６ａを形成し、次に、印刷版母材２０と切削刃３０とを、軸Ｃの方向（凹部２５の幅方向）に沿って、溝２６ａの切り込み幅ｗよりも小さい距離（ピッチｐ）だけ相対移動（送り移動）させ、次に切削刃３０によって印刷版母材２０の表面を再び切削することによって、溝２６ｂを形成する。溝２６ａ、２６ｂが形成されることによって、底部に１つの凸部２８を有する凹部２５が形成される。他の２つの凹部２５も同様にして形成される。 As shown in FIG. 9, first, the cutting blade 30 performs first cutting on the surface of the printing plate base material 20 to form the groove 26 a, and then the printing plate base material 20 and the cutting blade 30. Are moved relative to each other by a distance (pitch p) smaller than the cut width w of the groove 26a along the direction of the axis C (width direction of the recess 25), and then the printing plate mother is cut by the cutting blade 30. By cutting the surface of the material 20 again, the groove 26b is formed. By forming the grooves 26a and 26b, the concave portion 25 having one convex portion 28 at the bottom is formed. The other two recesses 25 are formed in the same manner.
　このような切削工程の後、耐磨耗性を高めるために、銅バラード層２４の表面の全体に、クロムめっき層（不図示）が形成される。そして、剥離層２３から銅バラード層２４を剥離することにより、図８に示されるような平板の印刷版３が得られる。 After such a cutting process, a chromium plating layer (not shown) is formed on the entire surface of the copper ballad layer 24 in order to increase the wear resistance. Then, by peeling the copper ballad layer 24 from the release layer 23, a flat plate 3 as shown in FIG. 8 is obtained.
　溝２６ａ、２６ｂの間隔（ピッチｐ）を、溝２６ａの切り込み幅ｗよりも小さくした結果、凸部２８の先端は、印刷版３の上面より低い位置にされる。すなわち、凸部２８の高さｈ１は、凹部２５の深さｄ１よりも小さい。 As a result of the interval (pitch p) between the grooves 26 a and 26 b being made smaller than the cut width w of the groove 26 a, the tip of the convex portion 28 is positioned lower than the upper surface of the printing plate 3. That is, the height h <b> 1 of the convex portion 28 is smaller than the depth d <b> 1 of the concave portion 25.
　（印刷版によって転写されたインキの断面形状）　
　図１０は本実施形態における被印刷体上に形成されたインキの断面形状を示す断面図である。本発明に係る印刷物は、少なくとも１つの窪み部を頂部に有する。本発明の第１実施形態では、印刷物４０は、図１０に示されるように、少なくとも１つの当該窪み部の深さがインキ層４１の高さよりも小さい。図示のとおり、本実施形態に係る印刷版３を含む印刷装置１によって転写されたインキを、硬化及び／又は焼成することによって、被印刷体５上にインキ層４１が形成された印刷物４０が得られる。なお図１０は被印刷体５の印刷面に垂直な断面における断面形状を示す。図示のとおり、転写及び乾燥後のインキ層４１の厚さは、本発明による改良前のインキ層４２と比較して、インキ層４１の面積の全体にわたり比較的均一になる。 (Cross sectional shape of ink transferred by printing plate)
FIG. 10 is a cross-sectional view showing the cross-sectional shape of the ink formed on the printing medium in the present embodiment. The printed matter according to the present invention has at least one recess at the top. In the first embodiment of the present invention, as shown in FIG. 10, in the printed product 40, the depth of at least one of the recesses is smaller than the height of the ink layer 41. As shown in the drawing, the printed matter 40 in which the ink layer 41 is formed on the substrate 5 is obtained by curing and / or baking the ink transferred by the printing apparatus 1 including the printing plate 3 according to the present embodiment. It is done. FIG. 10 shows a cross-sectional shape in a cross section perpendicular to the printing surface of the printing medium 5. As shown in the figure, the thickness of the ink layer 41 after transfer and drying is relatively uniform over the entire area of the ink layer 41 as compared to the ink layer 42 before improvement according to the present invention.
　以上のとおり、第１実施形態では、凸部２８を底部に有する凹部２５が形成された印刷版３であって、凸部２８の高さｈ１が凹部２５の深さｄ１よりも小さい印刷版３を用いて、被印刷体５上にインキが転写される。印刷版３の凹部２５が、その深さｄ１よりも高さｈ１の小さい凸部２８を有するので、凹部２５の面積にわたり比較的均一な量のインキを保持することが可能になり、転写及び乾燥後のインキ層４１の厚さを比較的均一にすることができる。したがって、インキの偏りに起因するはみ出しやかすれを抑制することができ、厚い印刷層の形成や比較的大きな面積のベタ塗りを好適に行うことができる。本実施形態における印刷物は導電性のインキを用いた回路基板であるため、互いに隣接するインキ層４１の接触による回路の短絡、及びインキ層４１のかすれに起因する回路の抵抗値の増大や断線のおそれを抑制することができ、しかも厚い印刷層の形成や比較的大きな面積のベタ塗りによって回路の抵抗値の増大を抑制し、耐久性を高めることができる。 As described above, in the first embodiment, the printing plate 3 is formed with the concave portion 25 having the convex portion 28 at the bottom, and the height h1 of the convex portion 28 is smaller than the depth d1 of the concave portion 25. Is used to transfer the ink onto the printing medium 5. Since the concave portion 25 of the printing plate 3 has the convex portion 28 whose height h1 is smaller than the depth d1, it becomes possible to hold a relatively uniform amount of ink over the area of the concave portion 25, and transfer and drying. The thickness of the subsequent ink layer 41 can be made relatively uniform. Therefore, it is possible to suppress the protrusion and fading due to the unevenness of the ink, and it is possible to suitably perform the formation of a thick print layer and the solid coating of a relatively large area. Since the printed matter in the present embodiment is a circuit board using conductive ink, the short circuit of the circuit due to the contact of the ink layers 41 adjacent to each other, and the increase in the resistance value of the circuit or the disconnection due to the fading of the ink layer 41. The fear can be suppressed, and the increase in the resistance value of the circuit can be suppressed and the durability can be improved by forming a thick printed layer or solid-coating a relatively large area.
　また、本実施形態では、印刷版３の凹部２５を、切削刃３０による切削によって形成したので、凹部２５の断面形状、ひいてはインキ層４１の断面形状を自在に制御することができる。また、切削刃３０により印刷版母材２０の表面に対して第１の溝２６ａを形成した後、切削刃３０を溝２６ａの切り込み幅ｗよりも小さい距離（ピッチｐ）だけ相対移動（送り移動）させ、次に切削刃３０によって印刷版母材２０の表面を再び切削することによって、溝２６ｂを形成するので、凹部２５の深さｄ１よりも小さい高さｈ１を有する凸部２８を容易に形成することができる。 In the present embodiment, since the concave portion 25 of the printing plate 3 is formed by cutting with the cutting blade 30, the cross-sectional shape of the concave portion 25 and thus the cross-sectional shape of the ink layer 41 can be freely controlled. In addition, after the first groove 26a is formed on the surface of the printing plate base material 20 by the cutting blade 30, the cutting blade 30 is relatively moved (feed movement) by a distance (pitch p) smaller than the cutting width w of the groove 26a. Then, the groove 26b is formed by cutting the surface of the printing plate base material 20 again with the cutting blade 30, so that the convex portion 28 having a height h1 smaller than the depth d1 of the concave portion 25 can be easily formed. Can be formed.
　（第２実施形態）　
　次に、本発明の第２実施形態について説明する。図１１ないし図１５に示される第２実施形態は、印刷版の凹部１２５を、エッチングによって形成したものである。図１１は本実施形態に係る印刷版の製造方法におけるエッチング前の印刷版母材を示す断面図である。また、図１２は本実施形態に係る印刷版の製造方法における１回目のエッチング後の印刷版母材を示す断面図であり、図１３は本実施形態に係る印刷版の製造方法における１回目のエッチング後にレジスト層を形成した印刷版母材を示す断面図である。図１４は本実施形態に係る印刷版の製造方法における２回目のエッチング後の印刷版母材を示す断面図であり、図１５は本実施形態に係る印刷版の製造方法によって製造された印刷版を示す断面図である。 (Second Embodiment)
Next, a second embodiment of the present invention will be described. In the second embodiment shown in FIGS. 11 to 15, the concave portion 125 of the printing plate is formed by etching. FIG. 11 is a cross-sectional view showing a printing plate base material before etching in the printing plate manufacturing method according to the present embodiment. FIG. 12 is a cross-sectional view showing the printing plate base material after the first etching in the printing plate manufacturing method according to the present embodiment, and FIG. 13 shows the first printing plate manufacturing method according to the present embodiment. It is sectional drawing which shows the printing plate base material in which the resist layer was formed after the etching. FIG. 14 is a cross-sectional view showing the printing plate base material after the second etching in the printing plate manufacturing method according to the present embodiment, and FIG. 15 is a printing plate manufactured by the printing plate manufacturing method according to the present embodiment. FIG.
　第２実施形態におけるエッチングの手順について説明する。先ず、図１１に示されるように、平坦な印刷版母材１２０の表面のうち、凹部１２５を形成する領域を囲むように、レジスト層１３１を形成する。次に、図１２に示されるように、エッチング液を用いてエッチングを行い、レジスト層１３１で挟まれた領域に、所定の深さの主溝１２６ａを形成する。 The etching procedure in the second embodiment will be described. First, as shown in FIG. 11, a resist layer 131 is formed so as to surround a region where the concave portion 125 is formed on the surface of the flat printing plate base material 120. Next, as shown in FIG. 12, etching is performed using an etching solution to form a main groove 126a having a predetermined depth in a region sandwiched between the resist layers 131.
　次に、図１３に示されるように、印刷版母材１２０からレジスト層１３１を除去し、主溝１２６ａのうち凸部１２８を形成する領域を残してレジスト層１３２を形成する。次に、図１４に示されるように、再びエッチングを行い、印刷版母材１２０に２つの副溝１２６ｂを形成する。最後に、図１５に示されるように、印刷版母材１２０からレジスト層１３２を除去することにより、１つの凸部１２８が底部に形成された凹部１２５を有する印刷版母材１２０が得られる。この印刷版母材１２０の表面の全体に、クロムめっき層（不図示）を形成することにより、平板の印刷版１０３が得られる。 Next, as shown in FIG. 13, the resist layer 131 is removed from the printing plate base material 120, and a resist layer 132 is formed leaving a region for forming the convex portion 128 in the main groove 126a. Next, as shown in FIG. 14, etching is performed again to form two sub-grooves 126 b in the printing plate base material 120. Finally, as shown in FIG. 15, by removing the resist layer 132 from the printing plate base material 120, the printing plate base material 120 having the concave portion 125 in which one convex portion 128 is formed at the bottom is obtained. By forming a chromium plating layer (not shown) on the entire surface of the printing plate base material 120, a flat printing plate 103 is obtained.
　以上のようにして形成された印刷版１０３においては、凸部１２８の先端は、印刷版母材１２０の上面より低い位置にある。すなわち、凸部１２８の高さｈ２は、凹部１２５の深さｄ２よりも小さい。したがって、当該印刷版によれば、第１実施形態と同様の効果を得ることができる。 In the printing plate 103 formed as described above, the tip of the convex portion 128 is at a position lower than the upper surface of the printing plate base material 120. That is, the height h2 of the convex portion 128 is smaller than the depth d2 of the concave portion 125. Therefore, according to the printing plate, the same effect as in the first embodiment can be obtained.
　（第３実施形態）　
　次に、本発明の第３実施形態について説明する。図１６は本実施形態に係る印刷版を示す断面図である。図１６に示される第３実施形態は、印刷版の凹部２２５を、めっき法を利用して形成したものである。本実施形態では、フォトレジスト層の形成、露光、めっき及びエッチングを用いためっき工程を、パターンを変えながら繰り返すことで、印刷版母材２２０の表面にめっき層２３１ａ、２３１ｂ、２３１ｃをこの順に形成する。めっき層２３１ａ、２３１ｂ、２３１ｃは、その開口面積がこの順に（下から上に）徐々に拡大するように形成され、これにより、溝２２６ａ、２２６ｂの間に凸部２２８が形成された凹部２２５を有する印刷版母材２２０が得られる。なお、めっきに代えて３Ｄプリンタにより、金属又は樹脂からなる同様の構造の印刷版母材２２０を得ることも可能である。この印刷版母材２２０の表面の全体に、クロムめっき層（不図示）を形成することにより、平板の印刷版２０３が得られる。 (Third embodiment)
Next, a third embodiment of the present invention will be described. FIG. 16 is a cross-sectional view showing a printing plate according to this embodiment. In the third embodiment shown in FIG. 16, the concave portion 225 of the printing plate is formed by using a plating method. In the present embodiment, the plating layers 231a, 231b, and 231c are formed in this order on the surface of the printing plate base material 220 by repeating the plating process using the photoresist layer formation, exposure, plating, and etching while changing the pattern. To do. The plating layers 231a, 231b, and 231c are formed so that their opening areas gradually increase in this order (from bottom to top). The printing plate base material 220 is obtained. Note that it is also possible to obtain a printing plate base material 220 having a similar structure made of metal or resin by a 3D printer instead of plating. By forming a chromium plating layer (not shown) on the entire surface of the printing plate base material 220, a flat printing plate 203 is obtained.
　以上のようにして形成された印刷版２０３においては、凸部２２８の先端は、印刷版母材２２０の上面より低い位置にある。すなわち、凸部２２８の高さｈ３は、凹部２２５の深さｄ３よりも小さい。したがって、当該印刷版２０３によれば、第１実施形態と同様の効果を得ることができる。 In the printing plate 203 formed as described above, the tip of the convex portion 228 is at a position lower than the upper surface of the printing plate base material 220. That is, the height h3 of the convex portion 228 is smaller than the depth d3 of the concave portion 225. Therefore, according to the printing plate 203, the same effect as that of the first embodiment can be obtained.
　（第４実施形態）　
　次に、本発明の第４実施形態について説明する。図１７は本実施形態に係る製造工程の途中の型母材及び印刷版を示す断面図であり、図１８は本実施形態に係る印刷版を示す断面図である。図１７及び図１８に示される第４実施形態は、型を用いて印刷版３０３を形成するものである。本実施形態では、まず、図１７に示されるように、フォトレジスト層の形成、露光、めっき及びエッチングを用いためっき工程を繰り返すことで、型母材３２０の表面に、めっき層３３１ａ、３３１ｂ、３３１ｃをこの順に形成して、型３２１を得る。そして型３２１の表面の全体に、離型剤で離型層３２２を形成し、銅めっきでめっき層３２３を形成し、めっき層３２３上に樹脂層３２４を形成し、その後、離型層３２２で剥離することで、印刷版３０３が得られる。これによって、図１８に示されるように、凹部３２５の溝３２６ａ、３２６ｂの間に凸部３２８が形成された印刷版３０３を得ることができる。なお、めっきに代えて３Ｄプリンタにより、金属又は樹脂からなる同様の構造の型３２１を得ることも可能である。 (Fourth embodiment)
Next, a fourth embodiment of the present invention will be described. FIG. 17 is a cross-sectional view showing a mold base material and a printing plate in the middle of the manufacturing process according to this embodiment, and FIG. 18 is a cross-sectional view showing the printing plate according to this embodiment. In the fourth embodiment shown in FIGS. 17 and 18, the printing plate 303 is formed using a mold. In the present embodiment, first, as shown in FIG. 17, plating layers 331 a, 331 b, and the like are formed on the surface of the mold base material 320 by repeating a plating process using formation, exposure, plating, and etching of a photoresist layer. The mold 321 is obtained by forming 331c in this order. Then, a release layer 322 is formed on the entire surface of the mold 321 with a release agent, a plating layer 323 is formed with copper plating, a resin layer 324 is formed on the plating layer 323, and then the release layer 322 is formed. The printing plate 303 is obtained by peeling. As a result, as shown in FIG. 18, it is possible to obtain a printing plate 303 in which convex portions 328 are formed between the grooves 326 a and 326 b of the concave portion 325. It is also possible to obtain a mold 321 having a similar structure made of metal or resin by a 3D printer instead of plating.
　以上のようにして形成された印刷版３０３においては、凸部３２８の先端は、印刷版３０３の上面より低い位置にある。すなわち、凸部３２８の高さｈ４は、凹部３２５の深さｄ４よりも小さい。したがって、当該印刷版３０３によれば、第１実施形態と同様の効果を得ることができる。 In the printing plate 303 formed as described above, the tip of the convex portion 328 is at a position lower than the upper surface of the printing plate 303. That is, the height h4 of the convex portion 328 is smaller than the depth d4 of the concave portion 325. Therefore, according to the printing plate 303, the same effect as that of the first embodiment can be obtained.
　（第５実施形態）　
　次に、本発明の第５実施形態について説明する。比較的大きな面積をベタ塗りするための凹部を印刷版に形成した場合に、大面積の凹部内ではドクター部材１１０３の撓みによって、インキの偏りに起因するかすれが生じるおそれがある。図１９及び図２０に示される第５実施形態は、単一の凹部４２５の内部に、複数の凸部４２８を形成することによって、この課題に対処するものである。 (Fifth embodiment)
Next, a fifth embodiment of the present invention will be described. When a concave portion for solid-coating a relatively large area is formed on the printing plate, the doctor member 1103 may bend in the large-area concave portion to cause blurring due to ink bias. The fifth embodiment shown in FIG. 19 and FIG. 20 addresses this problem by forming a plurality of convex portions 428 inside a single concave portion 425.
　図１９は３つの凹部４２５を有する印刷版４０３を示す平面図である。また、図２０は本実施形態における印刷版の要部を示す図１９のＸＸ－ＸＸ矢視断面図であり、図２１は本実施形態における被印刷体上に形成されたインキの断面形状を示す断面図である。印刷版４０３は、図５に示されたものと同様の円筒形の印刷版母材４２０の表面に対して、図７に示された切削刃３０を用いた切削によって形成される。すなわち、図２０に示されるように、まず切削刃３０によって印刷版母材４２０の表面に対して第１の切削を行うことで溝４２６ａを形成し、次に、印刷版母材４２０と切削刃３０とを、軸Ｃの方向（凹部４２５の幅方向）に沿って、溝４２６ａの切り込み幅ｗよりも小さい距離（ピッチｐ）だけ相対移動（送り移動）させ、次に切削刃３０によって印刷版母材４２０の表面を再び切削することによって、溝４２６ｂを形成する。同様にして、切削と送り移動とを交互に繰り返すことで、第３及び第４の溝４２６ｃ、４２６ｄが形成される。これによって、底部に３つの凸部４２８を有する単一の凹部４２５が形成される。 FIG. 19 is a plan view showing a printing plate 403 having three recesses 425. 20 is a cross-sectional view taken along the line XX-XX of FIG. 19 showing the main part of the printing plate in the present embodiment, and FIG. 21 shows the cross-sectional shape of the ink formed on the printing medium in the present embodiment. It is sectional drawing. The printing plate 403 is formed by cutting the surface of a cylindrical printing plate base material 420 similar to that shown in FIG. 5 using the cutting blade 30 shown in FIG. That is, as shown in FIG. 20, first, the cutting blade 30 performs first cutting on the surface of the printing plate base material 420 to form the groove 426a, and then the printing plate base material 420 and the cutting blade. 30 is moved along the direction of the axis C (width direction of the recess 425) by a distance (pitch p) smaller than the cut width w of the groove 426a, and then the printing plate is cut by the cutting blade 30. The groove 426b is formed by cutting the surface of the base material 420 again. Similarly, the third and fourth grooves 426c and 426d are formed by alternately repeating cutting and feeding movement. As a result, a single concave portion 425 having three convex portions 428 at the bottom is formed.
　このような切削工程の後、耐磨耗性を高めるために、印刷版母材４２０の表面の全体に、クロムめっき層（不図示）が形成される。そして、剥離層２３から銅バラード層２４を剥離することにより、図１９に示されるような平板の印刷版４０３が得られる。 After such a cutting process, a chromium plating layer (not shown) is formed on the entire surface of the printing plate base material 420 in order to increase the wear resistance. Then, by peeling the copper ballad layer 24 from the release layer 23, a flat plate 403 as shown in FIG. 19 is obtained.
　この第５実施形態に係る印刷版４０３を含む印刷装置１によって転写されたインキを、硬化及び／又は焼成することによって、図２１に示されるように被印刷体５上にインキ層４４１が形成された印刷物４４０が得られる。本実施形態では、印刷物４４０は、図示のとおり、少なくとも１つの窪み部の深さがインキ層４４１の高さよりも小さくなっている。なお図２１は被印刷体５の印刷面に垂直な断面における断面形状を示す。図示のとおり、転写及び乾燥後のインキ層４４１の厚さは、本発明による改良前のインキ層４４２と比較して、インキ層４４１の面積の全体にわたり比較的均一になる。 By curing and / or firing the ink transferred by the printing apparatus 1 including the printing plate 403 according to the fifth embodiment, an ink layer 441 is formed on the printing medium 5 as shown in FIG. A printed product 440 is obtained. In this embodiment, the printed matter 440 has a depth of at least one indented portion that is smaller than the height of the ink layer 441 as shown in the drawing. FIG. 21 shows a cross-sectional shape in a cross section perpendicular to the printing surface of the printing medium 5. As shown, the thickness of the ink layer 441 after transfer and drying is relatively uniform over the entire area of the ink layer 441 compared to the ink layer 442 before improvement according to the present invention.
　第５実施形態では、溝４２６ａ、４２６ｂ、４２６ｃ、４２６ｄの間隔（ピッチｐ）を、これら溝４２６ａ、４２６ｂ、４２６ｃ、４２６ｄの切り込み幅ｗよりも小さくした結果、凸部４２８の先端は、印刷版４０３の上面より低い位置にされる。すなわち、凸部４２８の高さｈ５は、凹部４２５の深さｄ５よりも小さい。したがって、当該印刷版４０３によれば、第１実施形態と同様の効果を得ることができ、とくに、単一の凹部４２５の内部に、複数の凸部４２８を形成したので、各凹部４２５の面積にわたるインキの保持量の均一化を一層促進することができ、比較的大面積の凹部４２５であっても、ドクター部材１１０３の撓みによってインキの偏りに起因するかすれが生じるおそれを、好適に抑制することができる。 In the fifth embodiment, the interval (pitch p) between the grooves 426a, 426b, 426c, and 426d is made smaller than the cut width w of the grooves 426a, 426b, 426c, and 426d. The position is lower than the upper surface of 403. That is, the height h5 of the convex portion 428 is smaller than the depth d5 of the concave portion 425. Therefore, according to the printing plate 403, the same effect as that of the first embodiment can be obtained. In particular, since the plurality of convex portions 428 are formed inside the single concave portion 425, the area of each concave portion 425 is obtained. The amount of retained ink can be further promoted, and even if the recess 425 has a relatively large area, the possibility of blurring due to ink bias due to the deflection of the doctor member 1103 is suitably suppressed. be able to.
　なお、上述した第２実施形態と同様のエッチングを、単一の凹部の内部に複数箇所のレジスト層を形成して行うことによって、第５実施形態と同様に、凸部４２８の高さｈ５が、凹部４２５の深さｄ５よりも小さい印刷版を作成することも可能であり、第５実施形態と同様の効果を得ることができる。 The same etching as in the second embodiment described above is performed by forming a plurality of resist layers inside a single recess, so that the height h5 of the protrusion 428 is the same as in the fifth embodiment. It is also possible to create a printing plate smaller than the depth d5 of the concave portion 425, and the same effect as in the fifth embodiment can be obtained.
　（第６実施形態）　
　次に、本発明の第６実施形態について説明する。上記各実施形態では、単一の凹部の内部に、複数の溝を形成することによって、これら複数の溝の間に凸部を形成したが、溝の深さは、互いに異なるものとすることができる。 (Sixth embodiment)
Next, a sixth embodiment of the present invention will be described. In each of the above embodiments, a plurality of grooves are formed inside a single recess to form a protrusion between the plurality of grooves. However, the depths of the grooves may be different from each other. it can.
　図２２は複数の溝を形成した凹部５２５を有する印刷版５０３の要部を示す断面図である。印刷版５０３は、図５に示されたものと同様の円筒形の印刷版母材５２０の表面に対して、図７に示された切削刃３０を用いた切削によって形成される。切削の手順は基本的に第５実施形態と同様であるが、第６実施形態では、５本の溝５２６ａ、５２６ｂ、５２６ｃ、５２６ｄ、５２６ｅを形成すると共に、切削刃３０の切り込み深さを変化させることによって、凹部５２５の両端部にある溝５２６ａ、５２６ｅの深さｄ６１と、図中左から２番目及び４番目の溝５２６ｂ、５２６ｄの深さｄ６２と、図中中央の溝５２６ｃの深さｄ６３とを、互いに異なる値とする。他の凹部５２５（不図示）の構造も同様とする。本実施形態における溝の深さは、中央の溝ほど深さが大きくなるように、ｄ６１＜ｄ６２＜ｄ６３とするが、溝の深さの分布はインキの粘度、乾燥速度や被印刷体との付着性などの物理特性に応じて任意に選択することができる。なお、単一の切削刃３０を使用する場合であっても、ピッチｐを相互に変化させることにより、凸部５２８の高さ（ここでは、最も深い溝５２６ｃの底部からの距離）ｈ６０を相互に変化させることも可能である。また、凸部５２８の先端は、印刷版５０３の上面より低い位置にある。すなわち、凸部５２８の高さｈ６０は、凹部５２５の深さｄ６０（本実施形態では、最も深い溝５２６ｃの深さｄ６３と同じ深さ）よりも小さい。 FIG. 22 is a cross-sectional view showing the main part of a printing plate 503 having a recess 525 formed with a plurality of grooves. The printing plate 503 is formed by cutting the surface of a cylindrical printing plate base material 520 similar to that shown in FIG. 5 using the cutting blade 30 shown in FIG. The cutting procedure is basically the same as in the fifth embodiment, but in the sixth embodiment, five grooves 526a, 526b, 526c, 526d, and 526e are formed and the cutting depth of the cutting blade 30 is changed. By doing so, the depth d61 of the grooves 526a and 526e at both ends of the recess 525, the depth d62 of the second and fourth grooves 526b and 526d from the left in the figure, and the depth of the groove 526c at the center in the figure Let d63 be a different value. The same applies to the structure of other recesses 525 (not shown). In this embodiment, the groove depth is d61 <d62 <d63 so that the depth of the groove is larger in the center, but the distribution of the groove depth is the viscosity of the ink, the drying speed, and the printing medium. It can be arbitrarily selected according to physical properties such as adhesion. Even when a single cutting blade 30 is used, by changing the pitch p to each other, the height of the convex portion 528 (here, the distance from the bottom of the deepest groove 526c) h60 can be changed. It is also possible to change it. Further, the tip of the convex portion 528 is at a position lower than the upper surface of the printing plate 503. That is, the height h60 of the convex portion 528 is smaller than the depth d60 of the concave portion 525 (in this embodiment, the same depth as the depth d63 of the deepest groove 526c).
　上述したように、比較的大きな面積をベタ塗りするための凹部を印刷版に形成した場合に、大面積の凹部内ではドクター部材１１０３の撓みによって、インキの偏りに起因するかすれが生じるおそれがある。このため、第６実施形態では、各凹部５２５の縁から中央に向かって溝を深くしたので、充填されるインキの量を増加させることで、被印刷体に転写されるインキ層の厚さの均一性を付与することができる。 As described above, when the concave portion for solid-coating a relatively large area is formed on the printing plate, the doctor member 1103 may bend in the large-area concave portion to cause blurring due to ink bias. . For this reason, in the sixth embodiment, since the groove is deepened from the edge of each recess 525 toward the center, the thickness of the ink layer transferred to the printing medium can be increased by increasing the amount of ink to be filled. Uniformity can be imparted.
　（第７実施形態）　
　次に、本発明の第７実施形態について説明する。上記各実施形態では、単一の凹部の内部に形成される複数の溝は、少なくとも凸部の頂部よりも下の領域では、いずれも溝の長手方向に直交する断面において対称（すなわち、印刷版母材の表面の垂線であって溝の幅方向の中央を通るものに対する線対称）の形状を有する。しかしながら、複数の溝のそれぞれは、凸部の頂部よりも溝の底部側の領域において、溝の長手方向に直交する断面において非対称の形状を有するものとすることができる。 (Seventh embodiment)
Next, a seventh embodiment of the present invention will be described. In each of the above embodiments, the plurality of grooves formed inside the single recess are symmetrical in the cross section perpendicular to the longitudinal direction of the groove, that is, at least in the region below the top of the protrusion (that is, the printing plate). It has a shape that is perpendicular to the surface of the base material and that passes through the center in the width direction of the groove. However, each of the plurality of grooves may have an asymmetric shape in a cross section perpendicular to the longitudinal direction of the groove in a region closer to the bottom of the groove than the top of the convex portion.
　図２３は本実施形態における切削加工に用いられる切削刃の要部を示す平面図である。また、図２４は本実施形態における印刷版を示す平面図であり、図２５は本実施形態における印刷版を示す図２４のＸＸＶ－ＸＸＶ矢視断面図である。図２６は本実施形態における被印刷体上に形成されたインキの断面形状を示す断面図である。図２３に示されるように、第７実施形態における印刷版６０３（図２４参照）の製造に用いられる切削刃６３０は、単一のノーズ部６３０ａと、これを挟む２つの斜行部６３０ｂ、６３０ｃとを有する。２つの斜行部６３０ｂ、６３０ｃの延在方向は、切削刃６３０の切り込み方向Ｇに対して互いに異なっており、一方の斜行部６３０ｂが切り込み方向Ｇに対してなす角度αは例えば２０°、他方の斜行部６３０ｃが切り込み方向Ｇに対してなす角度βは例えば７０°である。 FIG. 23 is a plan view showing a main part of a cutting blade used for cutting in the present embodiment. FIG. 24 is a plan view showing the printing plate in the present embodiment, and FIG. 25 is a sectional view taken along the line XXV-XXV in FIG. 24 showing the printing plate in the present embodiment. FIG. 26 is a cross-sectional view showing the cross-sectional shape of the ink formed on the printing medium in the present embodiment. As shown in FIG. 23, the cutting blade 630 used for manufacturing the printing plate 603 (see FIG. 24) in the seventh embodiment includes a single nose portion 630a and two oblique portions 630b and 630c sandwiching the nose portion 630a. And have. The extending directions of the two skewed portions 630b and 630c are different from each other with respect to the cutting direction G of the cutting blade 630, and an angle α formed by one skewed portion 630b with respect to the cutting direction G is, for example, 20 °. The angle β formed by the other oblique portion 630c with respect to the cutting direction G is, for example, 70 °.
　図２５に示されるように、まず切削刃６３０によって印刷版母材６２０の表面に対して第１の切削を行うことで、溝６２６ａを形成し、次に、印刷版母材６２０と切削刃６３０とを、軸Ｃの方向（凹部６２５の幅方向）に沿って、溝６２６ａの切り込み幅ｗよりも小さい距離（ピッチｐ）だけ相対移動（送り移動）させ、次に切削刃６３０によって印刷版母材６２０の表面を再び切削することによって、溝６２６ｂを形成する。そして、この切込み移動と送り移動とをもう１度繰り返すことにより、溝６２６ｃを形成する。溝６２６ａ、６２６ｂ、６２６ｃが形成されることによって、底部に２つの凸部６２８を有する凹部６２５が形成される。他の凹部６２５の構造も同様とする。 As shown in FIG. 25, first, the cutting blade 630 performs first cutting on the surface of the printing plate base material 620 to form a groove 626a, and then the printing plate base material 620 and the cutting blade 630. Are moved relative to each other by a distance (pitch p) smaller than the cut width w of the groove 626a along the direction of the axis C (width direction of the recess 625), and then the printing plate mother is cut by the cutting blade 630. A groove 626b is formed by cutting the surface of the material 620 again. Then, the groove 626c is formed by repeating this cutting movement and feeding movement once again. By forming the grooves 626a, 626b, and 626c, a concave portion 625 having two convex portions 628 at the bottom is formed. The structure of the other recessed part 625 is also the same.
　このような切削工程の後、耐磨耗性を高めるために、銅バラード層２４の表面の全体に、クロムめっき層（不図示）が形成される。そして、剥離層２３から銅バラード層２４を剥離することにより、図２４に示されるような平板の印刷版６０３が得られる。 After such a cutting process, a chromium plating layer (not shown) is formed on the entire surface of the copper ballad layer 24 in order to increase the wear resistance. Then, by peeling the copper ballad layer 24 from the release layer 23, a flat plate 603 as shown in FIG. 24 is obtained.
　溝６２６ａ、６２６ｂ、６２６ｃの間隔（ピッチｐ）を、溝６２６ａの切り込み幅ｗよりも小さくした結果、凸部６２８の先端は、印刷版６０３の上面より低い位置にされる。すなわち、凸部６２８の高さｈ７は、凹部６２５の深さｄ７よりも小さい。そして、複数の溝６２６ａ、６２６ｂ、６２６ｃのそれぞれは、凸部６２８の頂部よりも当該溝の底部側の領域において、当該溝の長手方向に直交する断面（すなわち、図２５に示された断面）において、非対称の形状を有することになる。 As a result of making the interval (pitch p) between the grooves 626a, 626b, and 626c smaller than the cut width w of the groove 626a, the tip of the convex portion 628 is positioned lower than the upper surface of the printing plate 603. That is, the height h7 of the convex portion 628 is smaller than the depth d7 of the concave portion 625. Each of the plurality of grooves 626a, 626b, and 626c has a cross section orthogonal to the longitudinal direction of the groove in the region on the bottom side of the groove with respect to the top of the convex portion 628 (that is, the cross section shown in FIG. 25). In this case, it has an asymmetric shape.
　この第７実施形態に係る印刷版６０３を含む印刷装置１によって転写されたインキを、硬化及び／又は焼成することによって、図２６に示されるように被印刷体５上にインキ層６４１が形成された印刷物６４０が得られる。本実施形態では、印刷物６４０は、図示のとおり、少なくとも１つの窪み部の深さがインキ層６４１の高さよりも小さくなっている。さらに、本実施形態では、印刷物６４０のインキ層６４１は、複数条の畝状部分からなり、当該インキ層６４１の畝状部分のそれぞれは、窪み部の底部よりも畝状部分の頂部側の領域において、当該畝状部分の長手方向に直交する断面において非対称の形状を有する。なお図２６は被印刷体５の印刷面に垂直な断面における断面形状を示す。図示のとおり、転写及び乾燥後のインキ層６４１の断面形状は、切削刃６３０の断面形状に対応して非対称になる。そして、インキ層６４１は、ピーク部６４１ａと、これを挟む２つの斜行部６４１ｂ、６４１ｃとを有する。２つの斜行部６４１ｂ、６４１ｃの延在方向は、被印刷体５の法線方向Ｈに対して互いに異なっており、一方の斜行部６４１ｂが法線方向Ｈに対してなす角度は例えば２０°から所定範囲内になり、他方の斜行部６４１ｃが法線方向Ｈに対してなす角度は例えば７０°から所定範囲内になる。このことに起因して、第７実施形態では、見る方向に応じて反射光の強さが異なる印刷物６４０を提供できる。 By curing and / or firing the ink transferred by the printing apparatus 1 including the printing plate 603 according to the seventh embodiment, an ink layer 641 is formed on the printing medium 5 as shown in FIG. A printed product 640 is obtained. In the present embodiment, the printed matter 640 has a depth of at least one indented portion smaller than the height of the ink layer 641 as illustrated. Furthermore, in the present embodiment, the ink layer 641 of the printed matter 640 is composed of a plurality of ridge-shaped portions, and each of the ridge-shaped portions of the ink layer 641 is a region on the top side of the ridge-shaped portion with respect to the bottom of the recessed portion. The cross-section perpendicular to the longitudinal direction of the bowl-shaped portion has an asymmetric shape. FIG. 26 shows a cross-sectional shape in a cross section perpendicular to the printing surface of the printing medium 5. As illustrated, the cross-sectional shape of the ink layer 641 after the transfer and drying is asymmetric corresponding to the cross-sectional shape of the cutting blade 630. The ink layer 641 has a peak portion 641a and two oblique portions 641b and 641c sandwiching the peak portion 641a. The extending directions of the two skew portions 641b and 641c are different from each other with respect to the normal direction H of the printing medium 5, and the angle formed by the one skew portion 641b with respect to the normal direction H is, for example, 20 The angle formed by the other skewed portion 641c with respect to the normal direction H falls within a predetermined range from 70 °, for example. For this reason, in the seventh embodiment, it is possible to provide a printed matter 640 having different reflected light intensity depending on the viewing direction.
　（第８実施形態）　
　次に、本発明の第８実施形態について説明する。上記各実施形態では、凸部の高さが凹部の深さよりも小さい印刷版について説明したが、本発明はこれに限られない。本実施形態では、凸部の高さが凹部の深さと等しい場合も含めて説明する。本実施形態に係る印刷物および印刷版を構成する各要素のうち、同様の機能を有するものについては、第１実施形態と同一の符号を付してその説明を省略する。 (Eighth embodiment)
Next, an eighth embodiment of the present invention will be described. In each of the above embodiments, the printing plate in which the height of the convex portion is smaller than the depth of the concave portion has been described, but the present invention is not limited to this. In the present embodiment, description will be given including the case where the height of the convex portion is equal to the depth of the concave portion. Among the elements constituting the printed matter and the printing plate according to the present embodiment, those having the same function are denoted by the same reference numerals as those in the first embodiment, and description thereof is omitted.
　従来、グラビアオフセット印刷により、基材上に印刷する場合、下記の特性・品質が要求される。　
［１］高精細で均一な形状の細線が広い面積に亘り印刷可能なこと。　
より具体的には、　
［２］印刷された細線が、断線、ショート等を有しないこと。　
［３］印刷された細線の膜厚が安定していること。 Conventionally, when printing on a substrate by gravure offset printing, the following characteristics and quality are required.
[1] A fine line having a high definition and a uniform shape can be printed over a wide area.
More specifically,
[2] The printed thin line does not have a disconnection or a short circuit.
[3] The film thickness of the printed fine line is stable.
　上記品質を満足するために、例えば、特許文献２には、厚膜印刷、微細画像、あるいはベタ印刷など、ピンホール、断線をきらうパターン形成において、オフセット方式による重ね刷り技術の適用が開示されている。重ね刷りにより、細線パターンの断線、版の目詰まりによるピンホール、印刷パターンの伸び縮み等が防止できるとの記載がされている。 In order to satisfy the above-mentioned quality, for example, Patent Document 2 discloses the application of an overprinting technique using an offset method in pattern formation that avoids pinholes and disconnections, such as thick film printing, fine image, or solid printing. Yes. It is described that the overprinting can prevent breakage of the fine line pattern, pinholes due to clogging of the plate, expansion and contraction of the print pattern, and the like.
　一方、上記品質を満足させるには、グラビアオフセット印刷を用いて細線パターンを印刷する際に、インキ剥離性を有する転写層上に、印刷版の凹部内に充填されたインキを確実に転移させることが必要となる。また、断線のない細線パターンを形成するには、ドクター部材で凹部内にインキを完全充填し、且つ満たされたインキ面を平滑にした上で、インキ剥離性転写層を有する転写体との接触時に、そのインキ面が均等に転写層と接触することが必要である。 On the other hand, in order to satisfy the above-mentioned quality, when the fine line pattern is printed using gravure offset printing, the ink filled in the concave portion of the printing plate is surely transferred onto the transfer layer having ink peelability. Is required. Moreover, in order to form a fine line pattern without disconnection, contact with a transfer body having an ink-peelable transfer layer after the ink is completely filled in the concave portion with a doctor member and the filled ink surface is smoothed. Sometimes it is necessary for the ink surface to be in uniform contact with the transfer layer.
　しかしながら、印刷しようとする印刷パターン（ここでは配線用の回路とする。）の線幅が太くなると、ドクター部材にて印刷版にインキを充填する際に、印刷版凹部の底部をドクター部材が擦ってしまい、充填がうまく行われないという問題が生じている。加えてグラビアオフセット印刷用のインキはレベリング性が低いため、版への充填形状がそのまま転写層を経て印刷物に転写されてしまい、所望の線幅と形状の回路を形成することができないという問題がある。したがって、細線の形状が設計値と異なってくるため、抵抗値や誘電率の制御が困難になる。この問題は、グラビアオフセット印刷において、高精細な印刷パターンを形成しようとするほどパターン内の広幅部分で顕著になる。 However, when the line width of a printing pattern to be printed (here, a circuit for wiring) becomes thick, the doctor member rubs the bottom of the concave portion of the printing plate when the doctor plate is filled with ink. As a result, there is a problem that filling is not performed well. In addition, gravure offset printing ink has a low leveling property, so the filling shape of the plate is transferred as it is to the printed matter through the transfer layer, and a circuit having a desired line width and shape cannot be formed. is there. Therefore, since the shape of the thin line is different from the design value, it becomes difficult to control the resistance value and the dielectric constant. In the gravure offset printing, this problem becomes more conspicuous in a wide portion of the pattern as a high-definition print pattern is formed.
　そこで、本実施形態では、所定の形状・大きさを有する凸部を凹版に設けることによって、ドクター部材がインキを充填する際に、凹版の底部をドクター部材が擦ってインキ充填がうまく行われないことを抑止する。その結果、線幅の広い部分の抵抗値や誘電率の制御が可能な印刷回路自体の構造と、これを実現するために印刷パターン内で相対的に線幅の太い部分のインキ充填率を向上させ、且つ、充填されたインキの表面平滑性を向上させることが可能になる。 Therefore, in this embodiment, by providing a convex portion having a predetermined shape and size on the intaglio, when the doctor member fills the ink, the doctor member rubs the bottom of the intaglio and the ink filling is not performed well. Deter it. As a result, the structure of the printed circuit itself, which can control the resistance and dielectric constant of the wide line width part, and the ink filling rate of the relatively thick line width part in the printed pattern to achieve this. And the surface smoothness of the filled ink can be improved.
　本発明の第８実施形態では、印刷版の凹部は、幅が１０μｍから５ｍｍ程度までの範囲で、深さが５μｍから２０μｍ程度の凹部によって形成されている。本実施形態は、幅が１００μｍ以上の凹部を備えるグラビアオフセット用印刷版の凹部のインキ充填に対して有効であり、１００μｍ以上の幅の凹部の中に周期的に並ぶ複数の凸部を備えた印刷版である。印刷版の凹部内に凸部を有すると、凹部に充填されたインキ６は凸部の部分に未充填領域を有するパターンになり、最終的に得られる印刷物はインキ６が充填されていない貫通孔を周期的に有するものとなる。 In the eighth embodiment of the present invention, the concave portion of the printing plate is formed by a concave portion having a width in the range of about 10 μm to 5 mm and a depth of about 5 μm to 20 μm. The present embodiment is effective for ink filling of the concave portion of the gravure offset printing plate having a concave portion with a width of 100 μm or more, and has a plurality of convex portions arranged periodically in the concave portion with a width of 100 μm or more. It is a print version. When the concave portion of the printing plate has a convex portion, the ink 6 filled in the concave portion becomes a pattern having an unfilled region in the convex portion, and the printed matter finally obtained is a through hole not filled with the ink 6 Periodically.
　本実施形態では、印刷版において、少なくとも１つの凸部の高さが凹部の深さと等しい。具体的には、当該凸部の頂部を規定する境界線上の２点を結ぶ直線の最大値は、５μｍ以上１００μｍ以下である。また、当該最大値は、凹部の幅に応じて異なりうる。そして、凸部の頂部が線状である場合、凸部の頂部の線幅の最小値は、５μｍ以上１００μｍ以下であることが本発明の効果を発揮する上で好ましい。当該凸部は、上面視で凹部の面積の２０％～７０％を占めていることが望ましい。 In this embodiment, in the printing plate, the height of at least one convex portion is equal to the depth of the concave portion. Specifically, the maximum value of a straight line connecting two points on the boundary line defining the top of the convex portion is 5 μm or more and 100 μm or less. Further, the maximum value may vary depending on the width of the recess. And when the top part of a convex part is linear, it is preferable when exhibiting the effect of this invention that the minimum value of the line | wire width of the top part of a convex part is 5 micrometers or more and 100 micrometers or less. It is desirable that the convex part occupies 20% to 70% of the area of the concave part when viewed from above.
　本実施形態では、印刷物の窪み部は、少なくとも１つの窪み部の深さがインキ層の高さと等しくなるように、基材が露出する露出部分を有する。具体的には、当該露出部分を規定する境界線上の２点を結ぶ直線の最大値は、５μｍ以上１００μｍ以下である。また、当該最大値は、インキ層の幅に応じて異なりうる。そして、当該露出部分が線状である場合、露出部分の線幅の最小値は、５μｍ以上１００μｍ以下であることが本発明の効果を発揮する上で好ましい。 In this embodiment, the dent portion of the printed material has an exposed portion where the substrate is exposed so that the depth of at least one dent portion is equal to the height of the ink layer. Specifically, the maximum value of a straight line connecting two points on the boundary line defining the exposed portion is 5 μm or more and 100 μm or less. Further, the maximum value may vary depending on the width of the ink layer. And when the said exposed part is linear, it is preferable when exhibiting the effect of this invention that the minimum value of the line width of an exposed part is 5 micrometers or more and 100 micrometers or less.
　印刷物に形成される露出部分である空孔群は、上面視で配線（インキ層）の面積の２０％～７０％の面積を占めるのが望ましい。２０％未満ではドクター部材１１０３によりグラビアオフセット用印刷版の凹部内にインキ６を充填する際に、凹部の底を擦ってしまうか若しくは充填量が不安定で印刷膜厚が薄くなるという問題が生じて空孔群の効果がみられない。このようになるとパターン設計通りの抵抗値、誘電率などが得られない。他方、７０％より面積を大きくすると、インキ部の占める割合が低下して、配線として使用するのであれば抵抗値が高くなりすぎるといった問題が生じる。尚、凸部の形状と占める割合は、下記に示すように凹部の大きさに依存して変える必要がある。 It is desirable that the hole group, which is an exposed portion formed on the printed material, occupies an area of 20% to 70% of the area of the wiring (ink layer) in a top view. If it is less than 20%, when the ink 6 is filled into the concave portion of the gravure offset printing plate by the doctor member 1103, there is a problem that the bottom of the concave portion is rubbed or the filling amount is unstable and the printing film thickness becomes thin. The effect of the vacancy group is not seen. In such a case, the resistance value, dielectric constant and the like as the pattern design cannot be obtained. On the other hand, when the area is made larger than 70%, the ratio of the ink portion decreases, and there is a problem that the resistance value becomes too high if used as wiring. In addition, it is necessary to change the shape and ratio of the convex portion depending on the size of the concave portion as shown below.
　また、グラビアオフセット用印刷版はその表面が平滑であることが望ましい。これにより、印刷版表面にインキ漏れを起こすこと無く印刷可能である。また、ドクター欠けなどの異常の抑制にもなる。ここで、印刷版の表面とは、ドクター部材１１０３と接触する表面、又は、印刷版のパターン状の凹部（溝）の内側表面のことをいう。なお、グラビアオフセット用印刷版の表面は、粗面研磨加工、鏡面研磨加工、超精密研磨加工（ラッピングやポリシング）によって平滑にすることができる。 Also, it is desirable that the gravure offset printing plate has a smooth surface. Thereby, it is possible to print without causing ink leakage on the printing plate surface. In addition, it also suppresses abnormalities such as missing doctors. Here, the surface of the printing plate refers to the surface in contact with the doctor member 1103 or the inner surface of the pattern-shaped recess (groove) of the printing plate. The surface of the gravure offset printing plate can be smoothed by rough surface polishing, mirror polishing, or ultra-precision polishing (lapping or polishing).
　また、ドクター部材１１０３には、印刷版の凹部内にインキ６を充填し且つ印刷版の表面平坦部上のインキ６を掻き取る必要があることから、ある程度のしなりが求められる。よって、ドクター部材１１０３は、ステンレスなどの金属、またはウレタンなどの樹脂、セラミックであることが望ましい。 Also, the doctor member 1103 is required to bend to some extent because it is necessary to fill the ink 6 into the concave portion of the printing plate and to scrape the ink 6 on the surface flat portion of the printing plate. Therefore, the doctor member 1103 is desirably a metal such as stainless steel, a resin such as urethane, or a ceramic.
　（第８実施形態における比較評価）　
　図２７は従来技術が採用する印刷版の凹凸構造を説明するための斜視図であり、図２８は本発明の第８実施形態における印刷版の構造を説明するための上面視の図である。 (Comparative evaluation in the eighth embodiment)
FIG. 27 is a perspective view for explaining the concavo-convex structure of the printing plate adopted by the prior art, and FIG. 28 is a top view for explaining the structure of the printing plate in the eighth embodiment of the present invention.
　グラビアオフセット用印刷版を２版用意した。各版の仕様は以下の通りである。　
ａ版：図２７に俯瞰図を示す印刷版１２００は、１０００μｍ×１０００μｍの電極部用凹部１２１１、５００μｍ幅の配線部用凹部１２１２、１５０μｍ幅の配線部用凹部１２１３、３０μｍ幅の配線部用凹部１２１４を有する。　
ｂ版：図２８に上面図を示す印刷版１３００は、ａ版と電極や配線部の大きさは同一だが、１０００μｍ×１０００μｍの電極部用凹部１３１１内に印刷部が５０％になるように長軸の長さ５０μｍ、短軸の長さ３０μｍの楕円形の凸部の群１３２１が形成されている。また５００μｍ幅の配線部用凹部１３１２には印刷部が３０％となるようにφ１００μｍの円の凸部の群１３２２が形成されている。また１５０μｍ幅の配線部用凹部１３１３には印刷部が７０％となるように１００μｍ×２００μｍの長方形の凸部の群１３２３が形成されている。幅３０μｍの配線部用凹部１３１４はａ版と同一である。 Two printing plates for gravure offset were prepared. The specifications of each version are as follows.
a plate: printing plate 1200 whose overhead view is shown in FIG. 27 is 1000 μm × 1000 μm electrode part recess 1211, 500 μm width wiring part recess 1212, 150 μm width wiring part recess 1213, 30 μm width wiring part recess 1214.
Plate b: The printing plate 1300 whose top view is shown in FIG. 28 is the same as the plate a, but the length of the printed portion is 50% in the electrode portion recess 1311 of 1000 μm × 1000 μm. A group 1321 of elliptical projections having an axis length of 50 μm and a minor axis length of 30 μm is formed. In addition, a group 1322 of circular convex portions having a diameter of 100 μm is formed in the concave portion 1312 for the wiring portion having a width of 500 μm so that the printed portion is 30%. Further, in the concave portion 1313 for the wiring portion having a width of 150 μm, a rectangular convex portion group 1323 of 100 μm × 200 μm is formed so that the printed portion is 70%. The wiring portion recess 1314 having a width of 30 μm is the same as the a plate.
　図２９に図２８のｂ版の印刷版１３００のＸＸＩＸ－ＸＸＩＸ矢視断面図を示す。配線部用凹部１３１２内に凸部の群１３２２が形成されている。この凸部の群１３２２によって配線部用凹部１３１２の底部をドクター部材１１０３により擦るという現象を防止している。この防止は、凸部の群１３２１、凸部の群１３２３についても同様である。 FIG. 29 is a cross-sectional view taken along the arrow XXIX-XXIX of the printing plate 1300 of the b plate in FIG. A group of convex portions 1322 is formed in the wiring portion concave portion 1312. This convex group 1322 prevents the doctor member 1103 from rubbing the bottom of the wiring portion recess 1312. The same applies to the convex group 1321 and the convex group 1323.
　ａ版、ｂ版は、１２０ｍｍ×１２０ｍｍ×３ｍｍのガラス板を用いて、エッチングにて凹部を形成した。 For the a and b plates, recesses were formed by etching using a 120 mm × 120 mm × 3 mm glass plate.
　この２種のグラビアオフセット用印刷版を用いて、ポリエチレンテレフタレート基材上に導電性銀ペーストによる配線パターンを形成するために、グラビアオフセット印刷を行った。 Using these two types of gravure offset printing plates, gravure offset printing was performed in order to form a wiring pattern with a conductive silver paste on a polyethylene terephthalate substrate.
　ポリエチレンテレフタレート基材は、厚さが１２５μｍ、縦が１２０ｍｍ、横が１２０ｍｍのものを使用した。また、導電性銀ペーストとして、レオロジー測定装置で角速度１５ｒａｄ／秒で、８．８Ｐａ／ｓのインキを使用した。また、インキ剥離性の転写体には、ゴム硬さ（ＪＩＳ　Ａ）４５°、ゴム厚さ　０．６ｍｍの金陽社製のシリコーンゴムを円筒に巻いたものを使用した。また、ドクター部材１１０３は、ＭＤＣ社製ドクターブレードのレギュラータイプを使用した。 The polyethylene terephthalate substrate used had a thickness of 125 μm, a length of 120 mm, and a width of 120 mm. As the conductive silver paste, an ink of 8.8 Pa / s was used at an angular velocity of 15 rad / sec with a rheology measuring device. Further, as the ink-peelable transfer member, a silicone rubber made by Kinyo Co., Ltd. having a rubber hardness (JIS A) of 45 ° and a rubber thickness of 0.6 mm was used. The doctor member 1103 was a regular type of doctor blade manufactured by MDC.
　グラビアオフセット印刷装置は、一般に使用されている印刷装置を使用した。印刷条件は、ドクター速度が５０ｍｍ／秒、転写体速度が２０ｍｍ／秒とし、転写体と印刷版の接触幅、転写体とポリエチレンテレフタレート基材の接触幅は一律で１０ｍｍとした。 The gravure offset printing device used was a commonly used printing device. The printing conditions were a doctor speed of 50 mm / sec and a transfer body speed of 20 mm / sec. The contact width between the transfer body and the printing plate and the contact width between the transfer body and the polyethylene terephthalate substrate were uniformly 10 mm.
　印刷タイプの配線基板は以下の工程により作製した。まず、用意したグラビアオフセット用印刷版の凹部に上記導電性銀ペーストを上記ＭＤＣ社製ドクターブレードによって充填した。次に、インキが充填された印刷版上で、上記転写体を回転及び移動させて、シリコーンゴム上に導電性銀ペーストの皮膜を形成した。最後に、導電性銀ペーストの皮膜が形成された転写体をポリエチレンテレフタレート基材に回転及び移動させて、ポリエチレンテレフタレート基材上に導電性銀ペーストの皮膜を転写し、印刷回路を形成した。 The printed wiring board was manufactured by the following process. First, the conductive silver paste was filled into the recesses of the prepared gravure offset printing plate using the doctor blade manufactured by MDC. Next, on the printing plate filled with ink, the transfer body was rotated and moved to form a conductive silver paste film on the silicone rubber. Finally, the transfer body on which the conductive silver paste film was formed was rotated and moved to the polyethylene terephthalate substrate, and the conductive silver paste film was transferred onto the polyethylene terephthalate substrate to form a printed circuit.
　上記条件において、ａ版とｂ版のグラビアオフセット用印刷版１２００、１３００にてグラビアオフセット印刷を行い、ａ版、ｂ版に対応する配線基板を各２０枚作製した。 Under the above conditions, gravure offset printing was carried out using gravure offset printing plates 1200 and 1300 for the a and b plates, and 20 wiring boards corresponding to the a and b plates were produced.
　ａ版で作成した配線基板の印刷回路では、１０００×１０００μｍの電極部パターン内にランダムなサイズで空孔が発生した。また５００μｍ幅の回路、１５０μｍ幅の回路共にランダムに空孔が発生しており、抵抗値を測定したところ大きなばらつきが生じた。３０μｍ幅の回路には空隙が発生せず、抵抗値も安定していた。 In the printed circuit of the wiring board created in the a version, holes were generated at random sizes in the 1000 × 1000 μm electrode part pattern. In addition, holes were randomly generated in both the 500 μm width circuit and the 150 μm width circuit, and when the resistance value was measured, a large variation occurred. There was no air gap in the 30 μm width circuit, and the resistance value was stable.
　一方、ｂ版で作成した配線基板の印刷回路では、設計通りの箇所に空孔を有する電極部パターン、配線パターン部が形成できた。印刷回路の抵抗値を確認したところ、５００μｍ幅の回路、１５０μｍ幅の回路、３０μｍ幅の回路共に狙った抵抗値が達成され安定していた。 On the other hand, in the printed circuit of the wiring board created in the b version, an electrode part pattern having a hole and a wiring pattern part could be formed at a designed position. When the resistance value of the printed circuit was confirmed, the targeted resistance values of the 500 μm width circuit, 150 μm width circuit, and 30 μm width circuit were achieved and stabilized.
　本実施形態のグラビアオフセット用印刷版を用いることで、線幅が太い回路でも、細い回路と同様に形状精度の高い印刷パターンを得ることが可能になる。特に、相対的に線幅の広い回路パターンになるに従って効果は顕著化するため、細線回路と広幅回路の混在している配線基板の形成に適している。また、本実施形態によれば、基材に対し設計通りの箇所に露出部分（空孔）を形成することが可能となるので、インキの偏りに起因するはみ出しやかすれを抑制することが可能となる。 By using the gravure offset printing plate of the present embodiment, it is possible to obtain a printed pattern with high shape accuracy even with a circuit having a large line width, as with a thin circuit. In particular, since the effect becomes more significant as the circuit pattern has a relatively wide line width, it is suitable for forming a wiring board in which a thin line circuit and a wide circuit are mixed. In addition, according to the present embodiment, it becomes possible to form an exposed portion (hole) at a location as designed with respect to the base material, and thus it is possible to suppress protrusion and blurring due to ink bias. Become.
　（その他）　
　本発明はこれら実施形態に示された態様のみに限らず、特許請求の範囲によって規定される本発明の思想に包含されるあらゆる変形例や応用例、均等物が本発明に含まれる。従って本発明は、限定的に解釈されるべきではなく、本発明の思想の範囲内に帰属する他の任意の技術にも適用することが可能である。 (Other)
The present invention is not limited to the aspects shown in these embodiments, and includes all modifications, applications, and equivalents included in the concept of the present invention defined by the claims. Therefore, the present invention should not be construed as being limited, and can be applied to any other technique belonging to the scope of the idea of the present invention.
　例えば、上記各実施形態では、平板の印刷版を用いて転写を行っていたが、これに限られず、シリンダー形状の印刷版を用いて転写を行ってもよい。 For example, in each of the above embodiments, the transfer is performed using a flat plate printing plate, but the transfer is not limited thereto, and the transfer may be performed using a cylinder-shaped printing plate.
　上記各実施形態のうち切削刃３０、６３０を用いるものでは、単一のノーズ部を有する切削刃３０、６３０によって切削を行ったが、複数のノーズ部を有する異形切削刃によって切削を行っても良い。 In each of the above embodiments, the cutting blades 30 and 630 are used to perform cutting with the cutting blades 30 and 630 having a single nose portion. However, even if cutting is performed with a modified cutting blade having a plurality of nose portions. good.
　上記各実施形態では、ブランケットを介して被印刷体にインキを転写していたが、印刷版から直接被印刷体にインキを転写してもよい。 In each of the above embodiments, the ink is transferred to the printing medium via the blanket, but the ink may be transferred directly from the printing plate to the printing medium.
　上記各実施形態では、インキの印刷パターンが被印刷体の上に形成されていることとしたが、当該印刷パターンが被印刷体の上に形成された後に、被印刷体が除去されて、印刷パターンのみによりその形状を保持する態様としてもよい。 In each of the above embodiments, the print pattern of the ink is formed on the printing medium. However, after the printing pattern is formed on the printing medium, the printing medium is removed and printed. It is good also as an aspect which hold | maintains the shape only by a pattern.
　また、上記各実施形態において、インキに付与された導電性は、例えば印刷層に通電することによる真贋判定や、電気回路部材としての利用など、各種の用途に利用することができる。 In each of the embodiments described above, the conductivity imparted to the ink can be used for various purposes such as authenticity determination by energizing the printing layer and use as an electric circuit member.
　上述した第８実施形態では、印刷版の凹部の深さと凸部の高さとが等しいが、本発明では、これに限られない。図３０は、本発明の変形例に係る、図２８のＸＸＩＸ－ＸＸＩＸ矢視断面図である。図３０に示す印刷版１４００は、凸部１４２２の形状以外は第８実施形態に係るｂ版と同一である。本変形例に係る印刷物および印刷版を構成する各要素のうち、同様の機能を有するものについては、第８実施形態と同一の符号を付してその説明を省略する。 In the above-described eighth embodiment, the depth of the concave portion of the printing plate is equal to the height of the convex portion, but the present invention is not limited to this. 30 is a cross-sectional view taken along arrow XXIX-XXIX in FIG. 28 according to a modification of the present invention. A printing plate 1400 shown in FIG. 30 is the same as the b plate according to the eighth embodiment except for the shape of the convex portion 1422. Among the elements constituting the printed matter and the printing plate according to this modification, those having the same function are denoted by the same reference numerals as those in the eighth embodiment, and description thereof is omitted.
　配線部用凹部１３１２内に凸部の群１４２２が形成されている。凸部の群１４２２の高さは、図３０に示されるように、配線部用凹部１３１２の深さより小さくなっている。この凸部の群１４２２によって配線部用凹部１３１２の底部をドクター部材１１０３により擦るという現象を防止している。 A group 1422 of convex portions is formed in the concave portion 1312 for the wiring portion. As shown in FIG. 30, the height of the convex group 1422 is smaller than the depth of the wiring-use concave portion 1312. This convex group 1422 prevents the doctor member 1103 from rubbing the bottom of the wiring portion recess 1312.
　本発明では、第１から第７実施形態のいずれか１つに係る印刷版、すなわち、凹部の深さが凸部の高さより大きい印刷版を用いて、上記空孔を有する印刷物を製造することが可能である。また、第８実施形態に係る印刷版、すなわち、凹部の深さが凸部の高さと等しい印刷版を用いて、頂部に窪みを有する（しかし露出部分を有しない）印刷物を製造したりすることも可能である。 In the present invention, using the printing plate according to any one of the first to seventh embodiments, that is, the printing plate in which the depth of the concave portion is larger than the height of the convex portion, the printed matter having the holes is manufactured. Is possible. In addition, using the printing plate according to the eighth embodiment, that is, the printing plate in which the depth of the concave portion is equal to the height of the convex portion, a printed matter having a depression at the top (but no exposed portion) is manufactured. Is also possible.

Claims (20)

  1. 　基材および前記基材上のインキ層からなる印刷物であって、
    　少なくとも１つの窪み部を頂部に有することを特徴とする印刷物。     A printed matter comprising a substrate and an ink layer on the substrate,
    A printed matter comprising at least one indentation at the top.
  2. 　少なくとも１つの前記窪み部の深さが前記インキ層の高さよりも小さいことを特徴とする請求項１に記載の印刷物。 The printed matter according to claim 1, wherein the depth of at least one of the recesses is smaller than the height of the ink layer.
  3. 　前記窪み部は、少なくとも１つの前記窪み部の深さが前記インキ層の高さと等しくなるように、前記基材が露出する露出部分を有することを特徴とする請求項１に記載の印刷物。 2. The printed matter according to claim 1, wherein the dent portion has an exposed portion where the base material is exposed so that a depth of at least one of the dent portions is equal to a height of the ink layer.
  4. 　前記インキ層は、複数条の畝状部分からなり、
    　前記インキ層の畝状部分のそれぞれは、前記窪み部の底部よりも前記畝状部分の頂部側の領域において、前記畝状部分の長手方向に直交する断面において非対称の形状を有することを特徴とする請求項２に記載の印刷物。     The ink layer is composed of a plurality of ridges,
    Each of the ridge-like portions of the ink layer has an asymmetric shape in a cross section perpendicular to the longitudinal direction of the ridge-like portion in the region on the top side of the ridge-like portion with respect to the bottom of the depression. The printed matter according to claim 2.
  5. 　前記露出部分は、線状であり、
    　前記露出部分の線幅の最小値は、５μｍ以上１００μｍ以下であることを特徴とする請求項３に記載の印刷物。     The exposed portion is linear;
    The printed matter according to claim 3, wherein the minimum value of the line width of the exposed portion is not less than 5 μm and not more than 100 μm.
  6. 　前記露出部分を規定する境界線上の２点を結ぶ直線の最大値は、５μｍ以上１００μｍ以下であることを特徴とする請求項３に記載の印刷物。 4. The printed material according to claim 3, wherein the maximum value of a straight line connecting two points on a boundary line defining the exposed portion is 5 μm or more and 100 μm or less.
  7. 　前記露出部分を規定する境界線上の２点を結ぶ直線の最大値は、前記インキ層の幅に応じて異なることを特徴とする請求項６に記載の印刷物。 The printed matter according to claim 6, wherein the maximum value of a straight line connecting two points on a boundary line defining the exposed portion differs according to the width of the ink layer.
  8. 　前記露出部分は、上面視で前記インキ層の面積の２０％～７０％を占めていることを特徴とする請求項６に記載の印刷物。 The printed matter according to claim 6, wherein the exposed portion occupies 20% to 70% of the area of the ink layer in a top view.
  9. 　前記インキ層を配線層として備えたことを特徴とする請求項１から８のいずれか１項に記載の印刷物。 The printed matter according to any one of claims 1 to 8, wherein the ink layer is provided as a wiring layer.
  10. 　基材上にインキを転写するために用いられる印刷版であって、
    　表面に、少なくとも１つの凸部を底部に有する凹部が形成されることを特徴とする印刷版。     A printing plate used to transfer ink onto a substrate,
    A printing plate, wherein a concave portion having at least one convex portion at the bottom is formed on the surface.
  11. 　少なくとも１つの前記凸部の高さが前記凹部の深さよりも小さいことを特徴とする請求項１０に記載の印刷版。 The printing plate according to claim 10, wherein the height of at least one of the convex portions is smaller than the depth of the concave portions.
  12. 　少なくとも１つの前記凸部の高さが前記凹部の深さと等しいことを特徴とする請求項１０に記載の印刷版。 The printing plate according to claim 10, wherein the height of at least one of the convex portions is equal to the depth of the concave portion.
  13. 　前記印刷版は、印刷版母材の表面に複数の溝を有し、
    　前記複数の溝のそれぞれは、前記凸部の頂部よりも前記溝の底部側の領域において、当該溝の長手方向に直交する断面において非対称の形状を有することを特徴とする請求項１１に記載の印刷版。     The printing plate has a plurality of grooves on the surface of the printing plate base material,
    12. The groove according to claim 11, wherein each of the plurality of grooves has an asymmetric shape in a cross section orthogonal to a longitudinal direction of the groove in a region closer to the bottom of the groove than the top of the convex portion. Printed version.
  14. 　前記凸部の頂部は、線状であり、
    　前記凸部の頂部の線幅の最小値は、５μｍ以上１００μｍ以下であることを特徴とする請求項１２に記載の印刷版。     The top of the convex part is linear,
    The printing plate according to claim 12, wherein the minimum value of the line width at the top of the convex portion is not less than 5 μm and not more than 100 μm.
  15. 　前記凸部の頂部を規定する境界線上の２点を結ぶ直線の最大値は、５μｍ以上１００μｍ以下であることを特徴とする請求項１２に記載の印刷版。 The printing plate according to claim 12, wherein the maximum value of a straight line connecting two points on a boundary line defining the top of the convex portion is 5 µm or more and 100 µm or less.
  16. 　前記凸部の頂部を規定する境界線上の２点を結ぶ直線の最大値は、前記凹部の幅に応じて異なることを特徴とする請求項１５に記載の印刷版。 The printing plate according to claim 15, wherein the maximum value of a straight line connecting two points on a boundary line defining the top of the convex portion varies depending on the width of the concave portion.
  17. 　前記凸部は、上面視で前記凹部の面積の２０％～７０％を占めていることを特徴とする請求項１５に記載の印刷版。 The printing plate according to claim 15, wherein the convex portion occupies 20% to 70% of the area of the concave portion in a top view.
  18. 　請求項１０から１７のいずれか１項に記載の印刷版を用いてインキを前記基材上に転写する工程を含むことを特徴とする印刷物の製造方法。 A method for producing a printed material, comprising a step of transferring ink onto the substrate using the printing plate according to any one of claims 10 to 17.
  19. 　切削刃による切削によって請求項１０から１７のいずれか１項に記載の印刷版の前記凹部を形成する工程を含むことを特徴とする印刷版の製造方法。 A method for producing a printing plate, comprising a step of forming the concave portion of the printing plate according to any one of claims 10 to 17 by cutting with a cutting blade.
  20. 　エッチングによって請求項１０から１７のいずれか１項に記載の印刷版の前記凹部を形成する工程を含むことを特徴とする印刷版の製造方法。 A method for producing a printing plate, comprising a step of forming the concave portion of the printing plate according to any one of claims 10 to 17 by etching.
PCT/JP2016/002435 2015-05-19 2016-05-18 Printed matter, printing plate, and method for manufacturing same WO2016185720A1 (en)

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WO2020248069A1 (en) * 2019-06-12 2020-12-17 Canadian Bank Note Company, Limited Intaglio printing plate with pressure relief feature for security documents and method for making the same
TWI742901B (en) * 2020-10-30 2021-10-11 光群雷射科技股份有限公司 Manufacturing method of transfer roller and manufacturing method of transfer film

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TWI742901B (en) * 2020-10-30 2021-10-11 光群雷射科技股份有限公司 Manufacturing method of transfer roller and manufacturing method of transfer film

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