WO2006070777A1 - ヘッド用液体とその成分含有量決定方法および成分比率安定化方法 - Google Patents
ヘッド用液体とその成分含有量決定方法および成分比率安定化方法 Download PDFInfo
- Publication number
- WO2006070777A1 WO2006070777A1 PCT/JP2005/023849 JP2005023849W WO2006070777A1 WO 2006070777 A1 WO2006070777 A1 WO 2006070777A1 JP 2005023849 W JP2005023849 W JP 2005023849W WO 2006070777 A1 WO2006070777 A1 WO 2006070777A1
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- WIPO (PCT)
- Prior art keywords
- head
- liquid
- ink
- water
- volatile solvent
- Prior art date
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 120
- 238000000034 method Methods 0.000 title claims description 30
- 230000000087 stabilizing effect Effects 0.000 title claims description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 230000008859 change Effects 0.000 claims abstract description 45
- 239000002904 solvent Substances 0.000 claims abstract description 42
- 238000007599 discharging Methods 0.000 claims abstract description 15
- 238000010521 absorption reaction Methods 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 235000011187 glycerol Nutrition 0.000 claims description 35
- 239000000463 material Substances 0.000 claims description 30
- 239000000049 pigment Substances 0.000 claims description 11
- 238000004040 coloring Methods 0.000 claims description 10
- 239000003086 colorant Substances 0.000 abstract description 4
- 239000000976 ink Substances 0.000 description 101
- 239000000758 substrate Substances 0.000 description 22
- 238000004140 cleaning Methods 0.000 description 19
- 238000009826 distribution Methods 0.000 description 18
- 238000012360 testing method Methods 0.000 description 17
- 238000001704 evaporation Methods 0.000 description 14
- 230000008020 evaporation Effects 0.000 description 14
- 238000011156 evaluation Methods 0.000 description 11
- 230000007613 environmental effect Effects 0.000 description 9
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- 238000012546 transfer Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000002940 repellent Effects 0.000 description 4
- 239000005871 repellent Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000002202 Polyethylene glycol Substances 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000001042 pigment based ink Substances 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 241001136629 Pixus Species 0.000 description 1
- 229920002556 Polyethylene Glycol 300 Polymers 0.000 description 1
- 206010049040 Weight fluctuation Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008531 maintenance mechanism Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 230000003405 preventing effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- 239000002352 surface water Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
- B41J2/16517—Cleaning of print head nozzles
- B41J2/16552—Cleaning of print head nozzles using cleaning fluids
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/32—Inkjet printing inks characterised by colouring agents
- C09D11/322—Pigment inks
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/38—Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
Definitions
- the present invention is used to efficiently remove ink residue and the like attached to the surface (hereinafter also referred to as ejection surface) on which ink ejection ports of an inkjet head (hereinafter also referred to as recording head) are formed. It relates to a liquid for a head.
- the present invention also relates to a method of determining the component content of the liquid, a method of stabilizing the component ratio, and an ink jet recording apparatus using the liquid.
- the inkjet recording method is a system that converts input image data into an output image through the use of ink, which is a liquid
- the cleaning technology of the recording head that ejects the ink is a very important element. The major issues that require cleaning are briefly described as follows.
- fine nozzles (hereinafter referred to as a generic term for ejection ports, liquid passages communicating with the ejection ports, and elements for generating energy used for ink ejection unless otherwise specified. Force)
- the ink is ejected directly onto the recording medium. Therefore, the ejected ink may bounce on the recording medium, and a small ink droplet (satellite) may be ejected and drifted in the atmosphere in addition to the main ink involved in the recording when the ink is ejected. Then, these forces may become ink mist and adhere around the ink discharge port of the recording head. In addition, dust and the like floating in the air may be attached. Then, when these deposits pull the main ink droplet to be discharged, the ink discharge direction may be reversed, that is, the straightness of the main ink droplet may be impeded.
- ink pigment based ink
- the pigment-based ink is formed by dispersing a colorant, which is originally solid, in water by introducing a dispersing agent or a functional group on the surface of the pigment. Therefore, the pigment ink dried by evaporation of the water in the ink on the ejection surface is dried, and the coloring material itself is dissolved at the molecular level! The damage done is large.
- Patent Document 1 and Patent Document 2 apply wiper liquid to the ejection surface during wiping of the recording head, thereby reducing the wear of the wiper and accumulating it in the recording head.
- a technique for removing accumulated matter by dissolving ink residue Furthermore, by forming a thin film of the liquid for head on the recording head, it is possible to prevent the foreign matter from adhering to the recording head, thereby improving the wiping performance.
- the liquid for head used at the time of the wiping is configured to be stored inside the printer main body.
- Patent Document 1 and Patent Document 2 a cleaning process by moving the wiper relative to the discharge surface and a non-volatile solvent as a liquid for the head on the discharge surface prior to this process And a supplying step is disclosed.
- the disclosure content of the non-volatile solvent is extremely small. That is, Patent Document 1 only discloses polyethylene glycol (PEG) having a molecular weight of 200 to 600, and Patent Document 2 only discloses polyethylene glycol having a molecular weight of 300 (PEG 300).
- the inventors of the present invention have supplied the non-volatile solvent prior to the cleaning step according to the method disclosed in the above-mentioned patent documents, and have found a problem that the supply state of the solvent to the head is large. Then, when the problem was further examined, the present inventors found that the factor of the non-volatile solvent itself is dominant. Usually, it is natural for a person skilled in the art to select the non-volatile solvent as a single body for the liquid for the head based on the evaporation characteristics, so it is natural for a person skilled in the art to select a processing liquid which does not easily evaporate when used as a liquid for the head. Also considered.
- the present inventors mainly consider changing the weight (mass) change due to moisture absorption by fundamentally revising the liquid supplied to the discharge surface as the main technical problem to achieve stable amount of supply. Eh. Then, when this technical issue was pursued, it was found that the above issue can be solved by adding water beforehand to the non-volatile liquid. This is totally based on the reverse idea.
- Patent Document 1 Japanese Patent Application Laid-Open No. 10-138503
- Patent Document 2 Japanese Patent Application Laid-Open No. 2000-20303
- An object of the present invention is to provide a technique for solving at least one of the problems described above. That is, the present invention is to suppress changes in physical properties (composition) of the liquid for head due to moisture absorption or evaporation due to environmental changes during physical distribution or when using a printer. In addition, it is possible to always stably and efficiently remove the ink residue adhering to the recording head discharge surface. Another object is to prevent liquid leakage.
- the invention according to the first aspect is provided with a discharge port for discharging an ink containing a color material.
- the liquid for a head that can be supplied to the surface of the ink jet head is characterized by having glycerin and water in a ratio by mass within a range of 75:25 and 95: 5.
- the invention according to the second aspect resides in a liquid for a head stored in a container.
- the ink can contain a pigment as the coloring material.
- a head which can be supplied to the surface of an ink jet head provided with a discharge port for discharging an ink containing a coloring material and which contains, as components, a non-volatile solvent and water mixed beforehand. It is a method of determining the component content of a liquid for use, in which the amount of water mixed with the non-volatile solvent is determined as an amount giving a smaller mass change than when the non-volatile solvent causes moisture absorption alone. It features.
- the invention according to the fourth aspect is a head which can be supplied to the surface of an ink jet head provided with discharge ports for discharging ink containing a color material, and which contains, as components, a non-volatile solvent and water mixed in advance.
- the method is characterized by including the step of replenishing the head liquid with water.
- the invention according to the fifth aspect is the surface of an ink jet head provided with a discharge port for discharging an ink containing a coloring material, which is a liquid for a head containing, as components, a non-volatile solvent and water mixed in advance.
- Means for supplying for cleaning the ink containing a coloring material which is a liquid for a head containing, as components, a non-volatile solvent and water mixed in advance.
- the liquid for the head contains glycerin as the non-volatile solvent, and the replenishing means has a weight ratio of glycerin to water of 75:25 or 95: 5. It can be filled with water.
- the problem of moisture absorption can be solved, and the characteristics of the liquid for the head can be stabilized.
- the invention of the second aspect in addition to the invention of the first aspect, it is possible to cope with posture changes, vibrations and the like during physical distribution of the recording device main body.
- the invention of the third aspect For example, it is possible to give an indication of the characteristic stability of the liquid for the head.
- the characteristics of the liquid for head can be maintained even if there is an extreme environmental change.
- Figure 1 shows the weight change due to moisture absorption over time when the non-volatile liquid glycerin 100% and the aqueous glycerin solution in which water is mixed in advance are mixed in a predetermined mass ratio in a relatively hot and humid environment. It is a graph which shows the experimental result which measured.
- FIG. 2 shows the experimental results of measuring the concentration change of glycerin due to water evaporation when the aqueous glycerin solution, in which water is mixed in advance with a predetermined mass ratio to glycerin in a relatively high temperature and low humidity environment, is measured.
- Fig. 3 shows the results of experiments of measuring the change in the concentration of glycerin with respect to time when 100% glycerin and an aqueous solution of glycerol mixed beforehand with water at a predetermined mass ratio were placed under a relatively low temperature and low humidity environment. It is a graph.
- FIG. 4 is a schematic perspective view of the main part of an ink jet printer according to an embodiment of the present invention.
- FIG. 5 is a perspective view showing a configuration example of a recording head mountable on the carriage of the ink jet printer of FIG.
- FIG. 6 is an exploded perspective view showing an example of the configuration of a recording head which is a component of the recording head of FIG. 5.
- FIG. 6 is an exploded perspective view showing an example of the configuration of a recording head which is a component of the recording head of FIG. 5.
- FIG. 7 is a partially broken perspective view showing the structure in the vicinity of the discharge port array for one color in the recording element substrate applied to the recording head of FIG.
- FIG. 8A is an explanatory diagram of a manufacturing process of the recording element substrate of FIG.
- FIG. 8B is an explanatory view of the manufacturing process of the recording element substrate of FIG. 7;
- FIG. 8C is an explanatory drawing of the manufacturing process of the recording element substrate of FIG. 7;
- FIG. 8D is an explanatory drawing of the manufacturing process of the recording element substrate of FIG.
- FIG. 8E is an explanatory drawing of the manufacturing process of the recording element substrate of FIG. 7;
- FIG. 8F is an explanatory drawing of the manufacturing process of the recording element substrate of FIG.
- FIG. 8G is an explanatory drawing of the manufacturing process of the recording element substrate of FIG. 7;
- FIG. 9 is a schematic side view showing an example of a cleaning device applied to the printer of FIG.
- FIG. 10 is a schematic view for explaining the operation of the cleaning device of FIG.
- FIG. 11 is a graph showing a change in glycerol concentration when a physical distribution test is performed on various types of head liquid of the example.
- Fig. 1 shows the experimental results of measuring the change in weight due to moisture absorption of the non-volatile liquid glycerin 100% and the aqueous glycerin solution in which water is mixed beforehand at a predetermined mass ratio based on the above findings.
- FIG. 1 the same amount was placed in a petri dish and placed in a relatively hot and humid environment with a temperature of 30 ° C. and a relative humidity of about 80%.
- FIG. 2 is a graph showing an experimental result of measuring a change in concentration of glycerin due to evaporation of water with respect to time (day) progress of an aqueous glycerin solution in which water is mixed in advance at a predetermined mass ratio to glycerin.
- experiments were conducted by placing equal amounts of each of the glycerin mixed solutions in a petri dish, and placing the mixture in a relatively high temperature and low humidity environment of a temperature of 30 ° C. and a relative humidity of about 15%. From these experimental results, it was found that in a relatively high temperature and low humidity environment, the glycerin concentration rose to 98% in about 2 days regardless of the initial glycerin concentration.
- FIG. 2 is a graph showing an experimental result of measuring a change in concentration of glycerin due to evaporation of water with respect to time (day) progress of an aqueous glycerin solution in which water is mixed in advance at a predetermined mass ratio to glycerin.
- FIG. 3 is a graph showing experimental results of measurement of changes in the concentration of glycerin with respect to time (day), with a glycerin aqueous solution in which 100% glycerin and a predetermined mass ratio of water are mixed beforehand.
- the experiment was conducted by placing the same amount in a petri dish and placing it under a relatively low temperature and low humidity environment with a temperature of 5 ° C and a relative humidity of about 15%.
- the concentration was about 95% due to moisture absorption.
- the concentration change due to water evaporation can be suppressed.
- the present invention is included in the head liquid to be supplied to the discharge surface with the discharge port for discharging the ink containing the coloring material.
- the standard that is, according to the present invention, the amount of water previously mixed with the non-volatile liquid is smaller than the mass change when the non-volatile liquid is absorbed alone, giving a mass change, and the concentration change due to evaporation etc.
- the basic technology concept is to make decisions.
- the liquid for head to be supplied to the discharge surface has glycerin and water in a mass ratio of 75:25 to 95: 5.
- the head liquid can be stably supplied.
- FIG. 4 is a schematic perspective view of the main part of the ink jet printer according to one embodiment of the present invention.
- the carriage 100 is fixed to the endless belt 5 and is movable along the guide shaft 3.
- the endless belt 5 is wound around a pair of pulleys 503, and a drive shaft of a carriage drive motor (not shown) is connected to one pulley 503. Accordingly, the carriage 100 is reciprocated main scanning along the guide shaft 3 in the left and right direction of the drawing as the motor is driven to rotate.
- a recording head 1 in the form of a cartridge for detachably holding the ink tank 2 is mounted.
- FIG. 5 is a perspective view showing an example of the configuration of the recording head 1 mountable on the carriage 100 of FIG. 4, and FIG. 6 is an exploded perspective view showing an example of the configuration of a head unit which is a component of the recording head 1. is there.
- the recording head 1 has a head unit 400 having an array of discharge ports for discharging ink, and an ink tank 410 for storing the ink and supplying the ink to the head unit 400.
- the ink discharge port array provided in the head unit 400 is opposed to the sheet 6 as a recording medium, and the arrangement direction is different from the main scanning direction (for example, the sub-scanning direction of the recording medium 6).
- the set of the ink discharge port array and the ink tank 410 can be provided in the number corresponding to the ink color to be used.
- six sets are provided corresponding to six colors (for example, black (Bk), cyan (C), magenta (M), yellow (Y), light cyan (PC) and light magenta (PM)) .
- an ink tank 410 independent of each color is prepared. Each is detachable from the head unit 400!
- the head unit 400 also includes a recording element substrate 420, a first plate 430, an electric wiring substrate 440, a second plate 450, a tank holder 460, and a flow path forming member 470.
- a recording element substrate 420 having a row of ejection openings for each color ink is adhesively fixed on a first plate 430 made of aluminum oxide (Al 2 O 3), and
- An ink supply port 431 for supplying ink to the recording element substrate 420 is formed. Furthermore, a second plate 450 having an opening is adhesively fixed to the first plate 430. The second plate 450 holds the electric wiring substrate 440 so that the electric wiring substrate 440 to which an electric signal for discharging the ink is applied is electrically connected to the recording element substrate 420.
- the flow path forming member 470 is ultrasonically welded to the tank holder 460 which holds the ink tank 410 in a detachable manner, and an ink flow path (not shown) extending from the ink tank 410 to the first plate 430 is formed. .
- FIG. 7 is a partially broken perspective view showing the structure in the vicinity of the discharge port array for one color in the recording element substrate 420 shown in FIG.
- reference numeral 421 denotes a heating element (heater) that generates thermal energy that causes film boiling in the ink in response to the application of electric energy as energy used to eject the ink.
- a temperature sensor 428 for detecting the temperature of the head unit 400 and a sub heater (not shown) for keeping the head or ink warm according to the detected temperature are provided.
- Be 422 is an ink discharge port
- 426 is an ink flow path wall.
- Reference numeral 425 denotes a discharge port plate in which the ink discharge ports 426 are formed in a state of being opposed to the respective heaters, and is disposed on the base 423 through a resin coating layer 427. Further, a desired water repellent material is provided on the surface of the ejection port plate 425 (the ejection surface facing the recording medium).
- two rows of the heaters 421 through the discharge ports 422 are arranged, and the heaters 421 through the discharge ports 422 between the respective rows are shifted by 1Z2 of the arrangement pitch in the arrangement direction, ie, the sub scanning direction. It is done.
- the heaters 421 through the discharge ports 422 between the respective rows are shifted by 1Z2 of the arrangement pitch in the arrangement direction, ie, the sub scanning direction. It is done.
- by arranging at a density of 128 heaters 421 to ejection force 422 S600 dpi per row a resolution of 1200 dpi per ink of one color is realized.
- the recording element substrate configuration corresponding to the six colors is disposed on the first plate 430.
- a method of producing a printing element substrate and a discharge surface will be described with reference to FIGS. 8A to 8G.
- FIGS. 8A and 8B are a schematic perspective view of the recording element substrate 420 and a schematic sectional view of the VI IIB′-VIIIB ′ line, respectively, on the substrate 1 on which the plurality of heaters 421 are made of silicon or the like. (The electrodes etc. for energizing the heater are not shown).
- FIG. 8C is a view in which the ink flow path pattern forming material 433 is disposed by positive resist on the base 423 shown in FIG.
- the ink flow path pattern forming material 433 is divided into a common liquid chamber for temporarily holding the ink to be supplied to each discharge port, and the common liquid chamber force, and the ink which causes film boiling by the heater. It corresponds to the pattern to construct the flow path.
- FIG. 8D shows that a nozzle forming material 434 made of a negative resist and a water repellent material 435 which is a negative resist containing fluorine and siloxane molecules are formed on the ink flow path pattern forming material 433 shown in FIG. It is a figure which shows a state.
- the discharge port plate 425 is formed of these materials.
- the water repellent material 435 in this manner, it is possible to make the ejection surface water repellent.
- the discharge surface can be changed to a desired surface property by changing the material to be combined with the nozzle forming material in this step. Further, when the water repelling property is not required for the discharge surface, the use of only the nozzle material without using the water repellant material makes it possible to form the discharge surface without water repellency.
- FIG. 8A shows a state in which the ink discharge port 422 and the ink path communicating with the ink discharge port 422 are formed by the photolithography method in the state of FIG. 8D.
- FIG. 8F is a view showing a state in which the ink supply port 424 is formed by anisotropic etching of silicon from the back surface side of the base 423 while appropriately protecting the discharge port formation surface side etc. from the state of FIG. It is.
- FIG. 8G shows a state in which the ink channel pattern forming material 4333 is eluted from the state of FIG. 8F to complete the recording element substrate.
- the arrangement shown in FIG. 5 is obtained by arranging the recording element substrate 420 completed in this way on the first plate 430 and further performing connection with each part, electrical mounting, and the like.
- the recording medium 6 is perpendicular to the scanning direction of the carriage 100. It is transported intermittently toward the The recording medium 6 is supported by a pair of roller units (not shown) respectively provided on the upstream side and the downstream side in the transport direction, and is transported in a state where a certain tension is given to ensure flatness to the ink discharge port. Be done. Then, the recording on the entire recording medium 6 is performed while alternately repeating the recording of the width corresponding to the array width of the discharge ports of the head unit 1 accompanying the movement of the carriage 100 and the conveyance of the recording medium 6. Further, in the apparatus shown, a linear encoder 4 is provided for the purpose of detecting the moving position of the carriage in the main scanning direction.
- the carriage 100 is stopped at the home position as needed at the start of recording or during recording.
- a maintenance mechanism 7 including a cap and a cleaning device described later with reference to FIG. 9 is installed.
- the cap is supported so as to be able to move up and down, and in the raised position, the discharge surface of the head unit 1 can be cubbed to protect it during non-recording operation or to perform suction recovery.
- it is set at a lowered position to avoid interference with the head unit 1, and it is possible to receive preliminary discharge by facing the discharge surface.
- FIG. 9 is a schematic side view showing an example of the cleaning device according to the present invention, as viewed in the arrow direction of FIG.
- Wiper blades 9A and 9B made of an elastic member such as rubber are fixed to the wiper holder 10, and the wiper holder 10 is arranged in the left and right direction of the figure (ink discharge ports are arranged perpendicularly to the main scanning direction of the recording head 1). Can move in the The wiper blades 9A and 9B have different heights, and the former bends relatively largely while the side bends relatively slightly, and the latter bends relatively small when the sliding contact with the discharge surface 11 of the recording head 1 occurs. I am getting along.
- Reference numeral 12 denotes a supply device for transferring the liquid for the head when the wiper blade comes in contact, and the liquid for the head can be stored in a tank (container).
- the contact portion may have an absorber that exudes the head liquid according to the contact with the wiper blade.
- a stirring device or the like may be added to obtain a uniform mixing state.
- Reference numeral 14 is a water refilling device, which is arranged to maintain the liquid for the head within the above-mentioned component ratio range even if water evaporation occurs due to extreme environmental changes. This replenishment system is the invention for the solvent of the invention.
- the present invention is basically capable of being supplied to the surface of an ink jet head provided with a discharge port for discharging ink containing a color material, and is a component of a head liquid containing, as components, premixed non-volatile solvent and water. It relates to the ratio stabilization method.
- An ink jet recording apparatus includes the following requirements. That is, in order to maintain the ratio of water mixed with the non-volatile solvent within the range of the ratio giving a smaller mass change than when the non-volatile solvent absorbs moisture alone, It is an invention characterized by including a step of replenishing the liquid for water with water.
- An ink jet recording apparatus includes the following requirements. That is,
- the head liquid is first brought into contact with the supply device 12 by bringing the wiper blade into contact with the supply device 12 before moving the recording head 1 to a standby position away from the home position or to the home position. Transfer. Then, the wiper holder 10 is returned to the position shown, and after setting the recording head to the home position, the wiper holder 10 is moved again in the arrow direction. In the process of this movement, the relatively long wiper blade 9A first comes in sliding contact with the discharge surface 11, and the wiper blade 9B follows the relatively short wiper blade 9B.
- FIG. 10 is an explanatory diagram of this process.
- the wiper blade 9A is bent relatively largely, and the side portion thereof is in sliding contact with the ejection surface 11, and the head liquid 16 is efficiently transferred to the ejection surface 11. Even if ink residue 1104 is present on the ejection surface 11, it is dissolved by the application of the head liquid 16. In this state, when the tip (edge) of the wiper blade 9B abuts on the ejection surface 11, the melt of the ink residue is efficiently scooped away, and the recording head is cleaned.
- the melt of the ink residue adheres on the wiper blade to cause V. If it is allowed to flow down the wiper blade under the action of gravity, a member can be provided below the position of the illustrated wiper holder 10 to receive it. However, by contacting the wiper blades 9 A and 9 B in the vicinity of the feeding device 12, the melt is positively received from the wiper blade and the means (sponge, scraper, etc.) or process is provided to clean the wiper blade. Preferably. If the force head liquid is transferred with the wiper blade kept clean, it can be ready for the next wiping operation.
- the wiper blade has a material and shape to obtain a desired amount of transfer (the amount of transfer from the wiper blade to the wiper blade and the amount of transfer from the wiper blade to the discharge surface) when sliding contact with the supply device 12 and the discharge surface 11 is made.
- the dimensions, and the relative position to the sliding contact should be determined. This is because if the weight change or physical property change of the head liquid caused by the environmental change is large, the desired transfer amount can not be obtained, and the cleaning performance may be deteriorated.
- the effects of the present invention will be verified by citing more specific examples and comparative examples.
- the wiping durability test was performed using “head liquid 1” to “head liquid 3” subjected to the above physical distribution test.
- the discharge surface cleaning operation was continuously performed 5000 times using a printer, and changes in the recording state before and after the test were confirmed.
- the endurance test conditions are as follows.
- Main body for evaluation The main body used for evaluation was an ink jet printer manufactured by Canon Inc. 1.
- the recovery system of “PIXUS 850i” was modified as shown in Fig. 4.
- Liquid for evaluation head and storage container Basically, the form used for the above distribution test was used. However, modifications were made to improve the sliding contact of the wiper blade and the transfer of the liquid for the head.
- Evaluation environment After left in the same environment as 60 ° C. for 2 weeks, tests were conducted at room temperature 30 ° C. and room temperature 15 ° C. as a practical use environment.
- Evaluation ink Inks with the composition shown in Table 3 were mounted on the color head of the recording head and evaluated.
- the pigment dispersion 1 used was prepared by the following method.
- the evaluation confirmed the change in the recording condition before and after the endurance test at temperature conditions of 30 ° C and 15 ° C. At this time, the nozzle check pattern built in the printer main body was printed on high-grade special paper, and the deviation of dot formation position was observed. The evaluation was made in the following three stages.
- the nozzle check pattern is printed well enough (no modification printer book It is different from printing when genuine ink is used for the body).
- Liquid 4 for head and “Liquid 4 for head” were evaluated favorably in an environment of 30 ° C. However, in the environment of 15 ° C., the nozzle check There was a jore in the whole pattern.
- the above-described embodiment exemplifies an embodiment in which the head liquid is transferred to the wiper blade and then wiped on the discharge surface to perform cleaning.
- the present invention is not limited to such a form.
- the head liquid may be applied (supplied) to the discharge surface using a member separate from the wiper, and then wiping may be performed. Even in such a form, it is preferable to use the head liquid having the constitution as in the present invention in order to perform the transfer (supply) of the ink well.
- the mixing ratio of water to the solvent for the head liquid in the present invention is an important factor, but in the case where the type of solvent for the head liquid changes or a plurality of solvents are used, Application is possible by determining those characteristics as described above and determining the ratio. Such ratio determination is not expected in the past.
- the method for determining the component content of a liquid for head when the amount of water mixed with the non-volatile solvent is caused to be absorbed by the non-volatile solvent alone. There is an invention characterized in that it is determined as an amount which gives less mass change.
- the liquid for head is a liquid which can be supplied to the surface of an ink jet head provided with a discharge port for discharging an ink containing a coloring material and which contains, as components, a non-volatile solvent and water mixed in advance. is there.
- the liquid for head in the present invention may be prepared by adding an additive etc. as long as it does not affect the mixing ratio of the solvent and water.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Ink Jet (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Detergent Compositions (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE602005013432T DE602005013432D1 (de) | 2004-12-28 | 2005-12-27 | Flüssigkeit für kopf, verfahren zur bestimmung des komponentengehalts davon und verfahren zur stabil |
EP05822842A EP1834784B1 (en) | 2004-12-28 | 2005-12-27 | Liquid for head, method of determining component content thereof and method of stabilizing component ratio |
CN2005800451804A CN101090826B (zh) | 2004-12-28 | 2005-12-27 | 用于喷墨头的液体和确定其组分含量的方法和稳定组分比例的方法 |
US11/770,129 US7695099B2 (en) | 2004-12-28 | 2007-06-28 | Liquid for head and method of determining contents of components thereof and method of stabilizing component ratio |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004381749 | 2004-12-28 | ||
JP2004-381749 | 2004-12-28 | ||
JP2005-235404 | 2005-08-15 | ||
JP2005235404A JP4812078B2 (ja) | 2004-12-28 | 2005-08-15 | インクジェット記録装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/770,129 Continuation US7695099B2 (en) | 2004-12-28 | 2007-06-28 | Liquid for head and method of determining contents of components thereof and method of stabilizing component ratio |
Publications (1)
Publication Number | Publication Date |
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WO2006070777A1 true WO2006070777A1 (ja) | 2006-07-06 |
Family
ID=36614891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/023849 WO2006070777A1 (ja) | 2004-12-28 | 2005-12-27 | ヘッド用液体とその成分含有量決定方法および成分比率安定化方法 |
Country Status (6)
Country | Link |
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US (1) | US7695099B2 (ja) |
EP (1) | EP1834784B1 (ja) |
JP (1) | JP4812078B2 (ja) |
AT (1) | ATE425873T1 (ja) |
DE (1) | DE602005013432D1 (ja) |
WO (1) | WO2006070777A1 (ja) |
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US7988277B2 (en) * | 2007-05-11 | 2011-08-02 | Canon Kabushiki Kaisha | Ink set, ink jet recording method, ink cartridge, recording unit, ink jet recording method, and aqueous ink |
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2005
- 2005-08-15 JP JP2005235404A patent/JP4812078B2/ja not_active Expired - Fee Related
- 2005-12-27 DE DE602005013432T patent/DE602005013432D1/de active Active
- 2005-12-27 EP EP05822842A patent/EP1834784B1/en not_active Not-in-force
- 2005-12-27 WO PCT/JP2005/023849 patent/WO2006070777A1/ja active Application Filing
- 2005-12-27 AT AT05822842T patent/ATE425873T1/de not_active IP Right Cessation
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2007
- 2007-06-28 US US11/770,129 patent/US7695099B2/en active Active
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Also Published As
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EP1834784A1 (en) | 2007-09-19 |
US7695099B2 (en) | 2010-04-13 |
US20070252868A1 (en) | 2007-11-01 |
JP2006205713A (ja) | 2006-08-10 |
EP1834784B1 (en) | 2009-03-18 |
DE602005013432D1 (de) | 2009-04-30 |
ATE425873T1 (de) | 2009-04-15 |
JP4812078B2 (ja) | 2011-11-09 |
EP1834784A4 (en) | 2008-03-12 |
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