EP2025522B1 - Sheet processing apparatus - Google Patents
Sheet processing apparatus Download PDFInfo
- Publication number
- EP2025522B1 EP2025522B1 EP20080013331 EP08013331A EP2025522B1 EP 2025522 B1 EP2025522 B1 EP 2025522B1 EP 20080013331 EP20080013331 EP 20080013331 EP 08013331 A EP08013331 A EP 08013331A EP 2025522 B1 EP2025522 B1 EP 2025522B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roll sheet
- sheet
- regulatory member
- movable blade
- roll
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 238000012545 processing Methods 0.000 title claims description 21
- 238000007599 discharging Methods 0.000 claims description 76
- 230000001105 regulatory effect Effects 0.000 claims description 68
- 239000000853 adhesive Substances 0.000 claims description 51
- 238000011144 upstream manufacturing Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
- B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
- B26D1/08—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
- B26D1/085—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type for thin material, e.g. for sheets, strips or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/01—Means for holding or positioning work
- B26D7/015—Means for holding or positioning work for sheet material or piles of sheets
Definitions
- the present invention relates to a sheet processing apparatus having a sheet discharging path portion for discharging sheet with short length in its conveyance direction when the roll-shaped sheet is cut.
- a sheet processing apparatus having a discharging device for discharging the cut roll sheet through the feeding force of a pair of roll sheet feeding rollers to the exterior of the printer.
- the pair of roll sheet feeding rollers is allocated on the downstream side of the cutting device constructed from a movable blade and a fixed blade (for example, see Japanese Patent Application Laid-open No. 2000-15879 ).
- the sheet discharging roller is equipped on the vicinity of the downstream side of the guillotine cutter.
- the sheet discharging roller is used to convey the cut printing media to the exterior of the printer.
- a driven roller is provided above the sheet discharging roller, wherein the driven roller is used to convey roll sheet via the cooperation with the sheet discharging roller.
- a compact sheet processing apparatus in which cut roll sheet is discharged from the sheet discharge slot without equipping a pair of roll sheet feeding rollers on the downstream side of the cutting device.
- the adhesive agent may adhere on the movable blade of the cutter.
- the rear end of the short roll sheet may move downward together with the movable blade due to the adherence property of the adhesive agent adhered to the movable blade.
- the roll sheet may be drawn in to the bottommost end of the cutter due to the adhesive agent adhered to the movable blade, and it may cause the discharging path of the roll sheet blocked up.
- a label printer having a cutting edge of a moveable blade mounted to a cutting holder which is inclined at an oblique cross angle.
- the cutting edge of the moveable blade obliquely intersects a roll sheet placed on a cutter plate in its cutting direction. This ensures that the cutting edge cuts the roll sheet sharply.
- this oblique cross angle has an influence on the number of times that the cutting edge is capable of cutting.
- An appropriate range of the oblique cross angle is 24° and 34°.
- the oblique cross angle is an angle formed between an upper surface of the cutter plate and the cutting edge in the cutting direction of the moveable blade.
- a printer wherein a plurality of rips are provided on a cut paper discharge guide and an upper cover which define a discharge port for discharging a cut paper.
- the rips hold a cut paper in width direction. Even if a cut paper having a high degree of curl is supplied when a roll diameter of a roll paper is reduced, it is possible to prevent a paper jam such as falling or clogging of the cut paper.
- the rips provided on the cut paper discharge guide and the upper cover are disposed an alternate pattern along the width direction of the discharge port. This arrangement is particularly effective in a printer having an inclined paper passage.
- the present invention has been made to solve the above-described problem and has an object to provide a sheet processing apparatus capable of preventing the short roll sheet from being drawn in to the bottommost end of the cutter due to the adhesive agent adhered to the movable blade when the movable blade is moving, and to provide a sheet processing apparatus capable of discharging the cut roll sheet certainly from the sheet discharge slot, and improving dramatically the discharging capability for roll sheet.
- the sheet processing apparatus comprises a first regulatory member arranged on the movable blade side across the conveyance path for the roll sheet cut by the cutting device, and a second regulatory member arranged on the fixed blade side across the conveyance path for the roll sheet cut by the cutting device
- the first regulatory member comprises a first contacting portion with which the roll sheet cut by the cutting device makes contact on the vicinity of the cutting device when the movable blade on which the roll sheet cut by the cutting device is adhered to by the adhesive agent moves to open
- the second regulatory member comprises a second contacting portion with which the roll sheet cut by the cutting device makes contact on the downstream side of the first contacting portion when the movable blade on which the roll sheet cut by the cutting device is adhered to by the adhesive agent moves to open.
- the roll sheet adhered to the movable blade may be peeled from the movable blade, especially, the short roll sheet may be discharged certainly without being drawn in by the movable blade, and thus the jam of the roll sheet may be prevented.
- a main body case 2 and a roll sheet holder 3 are accommodated in a roll sheet holder accommodating portion 4.
- a non-specified length roll sheet 3A (hereinafter referred to as "roll sheet 3A") with a predetermined width is wound on the roll sheet holder 3.
- the top portion of the printing apparatus 1 is covered with a top cover 5 made of resin, the cover being attached to the top edge portion on the rear side so that it can be opened or closed freely.
- a front cover 6 is formed on the front side of the top cover 5.
- a power button 7A, a feed button 7B and a cut button 7C are provided on the top end portion of the front cover 6 (central part in FIG. 1 ).
- the feed button 7B discharges a predetermined length of the roll sheet 3A in a conveyance direction while it is kept pressed, and the cut button 7C cuts the roll sheet 3A by driving the cutter unit 8 (see FIG. 7 ) covered with the front cover 6 when it is pressed.
- the front cover 6 includes a sheet discharge slot 6A for discharging the printed roll sheet 3A to the exterior on the front end portion.
- the front side of the front cover 6 is covered by a tray member 46.
- the tray member 46 is attached on the bottom end portion of the front cover 6 so as to be opened or closed freely.
- a concave portion 46A is formed on the top end of the tray member 46.
- the tray member 46 may be opened by putting fingers at the concave portion 46A and moving the tray member 46 rotationally to a front side of the printing apparatus 1.
- a tray accommodating portion 47 is formed in the inner side of the tray member 46.
- the tray accommodating portion 47 is accommodated in a locking state to the tray member 46 by moving a discharging tray 48 rotationally to the inner side of the tray member 46.
- an inlet 9 to which a power cord (not shown) is connected is disposed on the right side end portion of the rear face portion of the main body case 2.
- a universal serial bus (USB) connector 10 connected to a personal computer (not shown) is provided on the left side end portion of the rear face portion of the main body case 2.
- the roll sheet 3A is constituted by bonding together a long size heat sensitive sheet (so-called thermal paper) 3C and a peeling paper 3E via an adhesive agent layer 3D.
- the heat sensitive sheet 3C has self color generating characteristic, and the adhesive agent layer 3D is provided on the rear surface of the heat sensitive sheet 3C.
- the roll sheet 3A is wound around the roll sheet holder 3 so that the printing surface of the heat sensitive sheet 3C is located inside.
- the roll sheet holder 3 has a positioning member 12.
- An attachment member 13 having a substantially rectangular cross section is projected outward from the positioning member 12.
- the printing apparatus 1 has a holder supporting member 15 which may support the roll sheet holder 3 on a side end portion (the right side end portion in FIG. 3 ) in a substantially vertical direction to the conveyance direction of the roll sheet holder accommodating portion 4.
- This holder supporting member 15 includes a first positioning groove portion 16 formed in a substantially longitudinally long U shape in its front view. The first positioning groove portion 16 is open upward in the width direction and at the same time open to both sides in the width direction.
- the roll sheet holder 3 has a guide member 20 (see FIG. 3 ). As shown in FIG. 6 , a loading portion 21 on which the tip end portion of the guide member 20 is to be placed is provided in the roll sheet holder accommodating portion 4. The loading portion 21 is extended substantially horizontally from the rear end portion of an insertion port 18 (see FIG. 5 ) toward the top end portion on the front side of the roll sheet holder accommodating portion 4. The insertion port 18 is a portion to which the roll sheet 3A is to be inserted. Five second positioning groove portions 22A to 22E are formed at an edge corner portion on the rear side in the conveyance direction of this loading portion 21.
- the five second positioning groove portions 22A to 22E have a substantially L-shaped section corresponding to a plurality of width dimensions of the roll sheet 3A. As shown in FIG. 5 , the second positioning groove portions 22A to 22E are formed so that the bottom end portion on the front end to come into contact with the loading portion 21 of the guide member 20 constituting the load sheet holder 3 can be fitted thereto from above.
- a position determining concave portion 4A is formed in a predetermined depth (about 1.5 to 3 mm in this embodiment) in the bottom portion of the roll sheet holder accommodating portion 4.
- the position determining concave portion 4A has a landscape quadrangle shape in its plan view.
- the position determining concave portion 4A is formed substantially vertically to the conveyance direction from the inside proximal end portion of the holder supporting member 15 up to the proximal end portion of an opposing side face.
- a determining concave portion 4B is formed on the inside proximal end of the holder supporting member 15 of the position determining concave portion 4A.
- the determining concave portion 4B has a rectangular shape with a longer side along the conveyance direction as seen in its plan view. And a portion opposing a sheet determining portion (not shown) extends inward substantially at right angle from the bottom end portion of the positioning portion 12. And this extending portion of the determining concave portion 4B is more deeply formed than that of the position determining concave portion 4A by a predetermined depth (a depth of about 1.5 to 3 mm in this embodiment).
- This determining concave portion 4B includes six sheet determining sensors P1, P2, P3, P4, P5, P6 arranged in an L-shape.
- Each sheet determining sensor is constituted of push type micro switch or the like in order to determine the type of the roll sheet 3A and material of the heat sensitive sheet 3C, the width of the roll sheet 3A and the like.
- the six sheet determining sensors P1 to P6 are indicated in FIG. 4 .
- the sheet determining sensors P1 to P6 are constituted of a known mechanical switch composed of a plunger, micro switch and the like. And the top end portion of each plunger is provided to project from the bottom face portion of the determining concave portion 4B toward the vicinity of the bottom face portion of the position determining concave portion 4A.
- each sheet determining sensor P1 to P6 its plunger is projected up to the vicinity of the bottom face of the position determining concave portion 4A from the bottom face of the determining concave portion 4B, thus the micro switch is kept OFF normally. Then, when each sensor hole in the sheet determining portion is located at a position opposing each of the sheet determining sensors P1 to P6, the plunger is not pressed so that the micro switch is kept off and thus, an "OFF" signal is output. On the other hand, if each sensor hole in the sheet determining portion is not located at a position opposing each of the sheet determining sensors P1 to P6, the plunger is pressed down to turn the micro switch to an "ON" state and then an "ON" signal is output.
- each of the sheet determining sensors P1 to P6 outputs 6-bit “0", "1" signals. And when the sheet determining sensors P1 to P6 are all in an "OFF" state, namely, no roll sheet is mounted on the roll sheet holder 3, a 6-bit signal of "000000" is output.
- a side end portion (right end portion in FIG. 3 ) on the side of the holder supporting member 15 of the insertion port 18 is formed at a position opposing the inside end face of the positioning member 12, which is to be fitted to the holder supporting member 15.
- the roll sheet holder 3 on which the roll sheet 3A is loaded is detachably mounted in the roll sheet holder accommodating portion 4.
- the roll sheet holder 3 is mounted by fitting the attachment member 13 of the positioning member 12 into the first positioning groove portion 16 of the holder supporting member 15.
- a bottom end portion of the front end of the guide member 20 is fitted into any of second positioning groove portions 22A to 22E so that the bottom end portion of the guide member 20 is fitted into a positioning concave portion 4A to make a contact therewith.
- a slide member 29 is provided on the other side end portion of the holder supporting member 15 in the roll sheet holder accommodating portion 4.
- the slide member 29 is attached to the side end portion of the main body case 2 (left side end portion in FIG. 4 ) and supports the top cover 5.
- the slide member 29 may execute the up and down movement operation of the after-mentioned thermal head 31 while supporting the top cover 5 when it is slid.
- a platen roller 26 is supported rotatably on the bottom side of the front end portion of the front cover 6.
- a thermal head 31 is provided on the bottom side of the platen roller 26.
- the up and down movement operation of thermal head 31 is executed by the slide member 29.
- the roll sheet 3A is printed between the platen roller 26 and the thermal head 31. In other words, when the top cover 5 is closed by sliding the slide member 29, the thermal head 31 is moved upward, and the roll sheet 3A is depressed against the platen roller 26 so as to enable printing to be carried out.
- an elastic locking part 14 is provided on the left and right side wall of the front side of the roll sheet holder accommodating portion 4.
- Each of the elastic locking parts 14 is capable to deform elastically to the inner side of the roll sheet holder accommodating portion 4.
- a locking projection 14A is formed respectively on each elastic locking part 14.
- the locking projection 14A having a triangle sectional side view projects toward an outside direction of the locking part 14.
- Each elastic locking part 14 is adapted to engage with each locking concave portion 17 formed on the side edge portion of the opening portion on the top cover 5.
- One of the locking concave portions 17 is shown in FIG. 3
- the other locking concave portion 17 is shown in FIG. 4 .
- each elastic locking part 14 is engaged with each locking concave portion 17 respectively by moving the top cover 5 rotationally to a front side direction.
- the top cover 5 is maintained in a closed state.
- a concave portion 5A is formed at the central portion of the front end on the top cover 5.
- a pushing pawl portion 25 is provided on the left side of the front face of the concave portion 5A on the top cover 5.
- the pushing pawl portion 25 projects a predetermined length to a front side direction.
- a top cover detecting switch 28 is provided on the position which comes into contact with the pushing pawl portion 25 on the main body case 2 when the top cover 5 is closed.
- the top cover detecting switch 28 is constituted of micro switch and the like. The top cover detecting switch 28 may detect whether it is pressed by the pushing pawl portion 25 or not. In other words, top cover detecting switch 28 may detect whether the top cover 5 is closed or not.
- the pushing pawl portion 25 is disengaged from the top cover detecting switch 28.
- the thermal head 31 is moved downward, and disengages from the platen roller 26.
- a control board 36 is provided on the bottom side of the roll sheet holder accommodating portion 4.
- a control circuit portion is formed to drive control each mechanical component based on an instruction from an exterior personal computer and the like.
- a power supply board 37 on which a power circuit portion is formed is provided on the bottom side of the thermal head 31. Then, the control board 36 and the power supply board 37 are covered with a bottom face cover 38 which is screwed to the bottom face portion thereof. And the bottom face cover 38 is made of thin steel plate (steel plate so as SPCC about 0.5 mm thick in this embodiment).
- the thermal head 31 When the top cover 5 is closed as shown in FIG. 5 , the thermal head 31 is moved upward so that the roll sheet 3A is depressed against the platen roller 26 to enable printing to be carried out. In other words, the thermal head 31 comes into contact with the printing surface of heat sensitive sheet 3C on the roll sheet 3A. Thus the printing of the characters and the like is executed by heating the heat sensitive sheet 3C. Then the printed roll sheet 3A is carried to the cutter unit 8 which is provided on the downstream side of the thermal head 31, and is cut by the cutter unit 8.
- FIG. 7 is a front view of a cutter unit of the printing apparatus according to the embodiment.
- the cutter unit 8 comprises a rear frame 51 and a front frame and the like.
- the rear frame 51 on which the fixed blade 41 and the like are fixed, is formed in U shape in its plan view, and is disposed on the rear side in the conveyance direction.
- the front frame 52 on which the cutting motor 43 and the like are fixed, covers the front side of the rear frame 51 in the conveyance direction.
- the cutter unit 8 is constructed from a fixed blade 41 and a movable blade 42 which is shaped in a letter V in its front view.
- the cut button 7C When the cut button 7C is pressed, the movable blade 42 is reciprocated in the vertical direction controlled by a cutting motor 43 (see FIG. 8 ).
- the cutting motor 43 is constructed from a DC motor and the like.
- the roll sheet 3A is cut through the cooperative movement of the fixed blade 41 and the movable blade 42, and is discharged to the discharge gap 63 (see FIG.8 ).
- an elongated opening portion 68 through which the roll sheet 3A is inserted is provided on the rear frame 51.
- Both the right and the left end portions of the movable blade 42 extend upward with a substantially identical width into a gap between the right and the left side end portions of the opening portion 68 and the side wall portions 51A, 51B.
- each guide portion 42B and 42C are formed with the top end portion riding over on both the right and the left end portions of the fixed blade 41.
- the fixed blade 41 longer than the lateral width of the opening portion 68 is screwed with screws 69, 69 to the top edge portion of the opening portion 68.
- the fixed blade 41 is fixed between the each side wall portion 51A and 51B on the front side in the conveyance direction.
- the tip of the fixed blade 41 is situated slightly below the top edge portion of the opening portion 68 so that it can make contact with an entire width of the roll sheet 3A.
- the movable blade 42 When the roll sheet 3A printed at the thermal head 31 is discharged to the opening portion 68 of the cutter unit 8, the movable blade 42 is moved from the lowest position upward in the direction vertical to the conveyance direction by driving the cutting motor 43. The bottommost end portion of the V-shaped tip of the movable blade 42 is moved to a position which is above the bottom end portion of the fixed blade 41. Thereby, the roll sheet 3A which is carried to the opening portion 68, is cut over an entire width in the width direction by the cooperation of the movable blade 42 and the fixed blade 41.
- the movable blade 42 moves downward in a direction vertical to the conveyance direction from the cutting position to the bottommost position. At this time, the bottom edge portion of the opening portion 68 is located a little below than the bottommost end portion of the V-shaped tip of the movable blade 42.
- the movable blade 42 comes into contact with the adhesive agent layer 3D of the printed roll sheet 3A, and cuts the roll sheet 3A by the cooperation with the fixed blade 41. Thereby, the adhesive agent on the adhesive agent layer 3D of the roll sheet 3A may accumulate on the movable blade 42.
- FIG. 8 is a sectional view showing the general description of the sheet discharging path portion 60 and the circumference thereof according to the embodiment.
- FIG. 9 is a pattern diagram showing a discharging path of the short roll sheet in the case that the adhesive agent adheres on the movable blade in the printing apparatus according to the embodiment.
- FIG. 10 is a pattern diagram showing a discharging path of the short roll sheet in the case that the adhesive agent adheres to the fixed blade in the printing apparatus according to the embodiment.
- FIG. 11 is a pattern diagram showing a discharging path of the long size roll sheet in the printing apparatus according to the embodiment.
- FIG. 12 is an enlarged pattern diagram showing a discharging portion in the case of the long size roll sheet in the printing apparatus according to the embodiment.
- the sheet discharging path portion 60 is provided on the downstream side of the cutter unit 8.
- the sheet discharging path portion 60 includes a projecting portion 61, a regulatory member 62, a roll sheet receiving portion 64, and a rib 65.
- the projecting portion 61 is provided on the downstream side of the fixed blade 41, projecting toward the downstream side of the conveyance direction of the roll sheet 3A.
- the regulatory member 62 is provided on the downstream side of the movable blade 42.
- the regulatory member 62 is a member having a stepwise structure, extending to the downstream side of the conveyance direction.
- the roll sheet receiving portion 64 is arranged between the movable blade 42 and the regulatory member 62, constructing the lower part of the sheet discharging path portion 60 together with the regulatory member 62. Also the roll sheet receiving portion 64 is a member to guide the roll sheet 3A in an obliquely upward direction.
- the rib 65 is arranged between the projecting portion 61 and the fixed blade 41, constructing the upper part of the sheet discharging path portion 60 together with the projecting portion 61.
- the regulatory member 62 is parallel to the bottom face of the projecting portion 61.
- the regulatory member 62 extends to the downstream side along the conveyance direction by keeping a predetermined space with the bottom face of the projecting portion 61 (about 1.2mm in this embodiment).
- the regulatory member 62 includes a horizontal part 62A, a sloping part 62B and a second horizontal part 62C.
- the sloping part 62B extends from the downstream side edge portion of the horizontal part 62A along the conveyance direction toward an obliquely downward direction.
- the second horizontal part 62C extends from the bottom edge portion of the sloping part 62B horizontally toward the downstream side of the regulatory member 62.
- a top edge portion 62D (corner portion) is formed on the downstream side of the second horizontal part 62C.
- the top edge portion 62D is on the front cover 6 connecting with the downstream side of the second horizontal part 62C.
- the top edge portion 62D is an edge portion of the front cover 6 which constructs a same surface with the second horizontal part 62C.
- the regulatory member 62 has a stepwise structure including the horizontal part 62A, the sloping part 62B and the second horizontal part 62C.
- the position of the downstream side edge portion of the horizontal part 62A is determined by keeping the minimum length of the roll sheet 3A capably being made by the printing apparatus 1 as the horizontal distance from the cutting position.
- the tip of the projecting portion 61 projects toward the downstream side to the position almost the same as that of the downstream side edge portion of the horizontal part 62A.
- the roll sheet 3A which is cut at the cutter unit 8 comes into contact with the inclined surface of the roll sheet receiving portion 64, and is guided toward an obliquely upward direction of the downstream side of the conveyance direction. Then the roll sheet 3A is guided to the discharging gap 63 which is on the downstream side of the roll sheet receiving portion 64. After passing the discharging gap 63, the roll sheet 3A is guided to the position between the projecting portion 61 and the regulatory member 62.
- the short roll sheet 3A is cut at the cutter unit 8 and is discharged to the sheet discharging path portion 60.
- the roll sheet 3A passes the discharging gap 63, the bottom side of the roll sheet 3A comes into contact with the rear edge portion 62F of the regulatory member 62 on the sheet discharging path portion 60 or the top edge portion 64A of the roll sheet receiving portion 64, while the top side of the roll sheet 3A comes into contact with the bottom surface of the projecting portion 61. Accordingly, the movement of the roll sheet 3A is regulated. As a result, the roll sheet 3A is prevented from adhering to the adhesive agent on the movable blade 42, and the roll sheet 3A is also prevented from moving to the bottommost end portion of the movable blade 42.
- the top side of the short roll sheet 3A comes into contact with the bottom edge portion 61A of the projecting portion 61 instead of the bottom surface of the projecting portion 61.
- the bottom side of the roll sheet 3A comes into contact with the rear edge portion 62F of the regulatory member 62 or the top edge portion 64A of the roll sheet receiving portion 64.
- the rear edge portion 62F of the regulatory member 62 or the top edge portion 64A of the roll sheet receiving portion 64 is almost at the same position with the bottom edge portion 61A of the projecting portion 61 on the open/close direction of the movable blade 42 to the fixed blade 41 (up and down direction).
- the rear edge portion 62F of the regulatory member 62 or the top edge portion 64A of the roll sheet receiving portion 64 is a little below the bottom edge portion 61A of the projecting portion 61 on the up/down direction.
- the rear edge portion 62F of the regulatory member 62 or the top edge portion 64A of the roll sheet receiving portion 64 may be arranged at the same position or a little above the bottom edge portion 61A of the projecting portion 61 on the up/down direction by keeping the same discharging gap therebetween.
- the movable blade 42 moves upward so as to cut the roll sheet 3A shortly. At that time, the edge portion on the upstream side along the conveyance direction of the roll sheet 3A adheres to the movable blade 42 due to the adhesive agent on the movable blade 42.
- the movable blade 42 moves in a downward direction when the cutting of the roll sheet 3A is finished. At this time, the bottom side of the roll sheet 3A comes into contact with the rear edge portion 62F of the regulatory member 62 on sheet discharging path portion 60 or the top edge portion 64A of the roll sheet receiving portion 64, while the top side of the roll sheet 3A comes into contact with the bottom surface of the projecting portion 61.
- the part of the roll sheet 3A which comes into contact with the rear edge portion 62F of the regulatory member 62 or the top edge portion 64A of the roll sheet receiving portion 64 is defined as a first part of the roll sheet 3A, and the part of the roll sheet 3A which comes into contact with the bottom surface of the projecting portion 61 is defined as a second part of the roll sheet 3A.
- the length from the upstream side edge portion to the first part almost equals to the horizontal distance from the cutting position to the rear edge portion 62F of the regulatory member 62 on sheet discharging path portion 60 or to the top edge portion 64A of the roll sheet receiving portion 64.
- the length from the upstream side edge portion to the second part is longer than the length from the upstream side edge portion the short roll sheet 3A to the first part.
- the second part is on the downstream side of the first part of the roll sheet 3A.
- the roll sheet 3A on which the peeling paper 3E is bonded via the adhesive agent layer 3D has a predetermined elasticity.
- the roll sheet 3A is prevented from adhering to the adhesive agent on the movable blade 42, and being drawn in to the bottommost end portion of the movable blade 42.
- Jam of roll sheet 3A at the sheet discharging path portion 60 is also prevented so that the roll sheet may be discharged certainly, and the discharging capability of the printing apparatus may be improved dramatically.
- the roll sheet 3A cut by the cutter unit 8 when the roll sheet 3A cut by the cutter unit 8 is shorter, the possibility to be drawn in the printing apparatus by adhering to the adhesive agent on the movable blade 42 is higher. However, the adhesive power of the adhesive agent on the movable blade 42 is not very strong. Therefore, if the roll sheet 3A cut by the cutter unit 8 has a certain length, even when the roll sheet 3A adheres to the movable blade 42, the roll sheet may be peeled from the movable blade 42 due to its own weight without being drawn in by the printing apparatus 1. On the other hand, when the roll sheet 3A cut by the cutter unit 8 is too short, since the own weight of the roll sheet 3A is too small, the roll sheet 3A still may be drawn in the printing apparatus 1.
- the regulatory member 62 has a stepwise structure including a horizontal part 62A, a sloping part 62B and a second horizontal part 62C.
- the position of the downstream side edge portion of the horizontal part 62A is determined by keeping the minimum length of the roll sheet 3A capably being made by the printing apparatus 1 as the horizontal distance from the cutting position.
- the roll sheet 3A discharged from the sheet discharging path portion 60 passes the sloping part 62B and is discharged to the exterior of the printing apparatus 1 smoothly without being piled up at horizontal part 62A of the sheet discharging path portion 60.
- the regulatory member 62 has a stepwise structure, the jam of the roll sheet 3A on the sheet discharging path portion 60 may be prevented, and the discharging capability of the printing apparatus may be improved dramatically.
- a predetermined space is provided between the two projecting portions 61 in this embodiment.
- the left side projecting portion 61 on the roll sheet conveyance direction (the right side projecting portion 61 in FIG. 3 )
- the roll sheet 3A is pressed by the left side projecting portion 61.
- the roll sheet 3A is regulated by the projecting portion 61 and the regulatory member 62 or the top edge portion 64A of the roll sheet receiving portion 64.
- the roll sheet 3A may be discharged smoothly from the sheet discharging path portion 60.
- the roll sheet 3A is pressed by both of the left and the right side projecting portions 61. As a result, the roll sheet 3A may be discharged smoothly from the sheet discharging path portion 60, and the discharging capability of the printing apparatus may be improved dramatically.
- a predetermined space for example, a space to which the fingers may be inserted
- the roll sheet 3A may be pulled out simply by the user with hands, thus, the printing apparatus may be recovered easily from the jam of the roll sheet 3A at the sheet discharging path portion 60. And in the first place, the short roll sheet 3A is easily to be pulled out from the printing apparatus 1.
- FIG. 10 is a pattern diagram showing a discharging path of the short roll sheet in the case that the adhesive agent adheres on the fixed blade in the printing apparatus according to the embodiment.
- the rib 65 which is arranged on the upstream side of the projecting portion 61, constructs the upper part of the sheet discharging path portion 60 together with the projecting portion 61.
- the bottom edge portion 65A of the rib 65 is arranged lower than the bottommost edge portion 41A of the fixed blade 41 (the difference is about 0.5mm to 1mm in this embodiment).
- the adhesive agent accumulated on the movable blade 42 may transfer to the fixed blade 41 due to the sliding movement between the fixed blade 41 and the movable blade 42.
- the roll sheet 3A tends to adhere to the fixed blade 41 due to the adhesive agent (see the dotted and dashed line in FIG. 10 ).
- the bottom edge portion 65A of the rib 65 adjacent to the projecting portion 61 is arranged lower than the bottommost edge portion 41A of the fixed blade 41, thereby, the roll sheet 3A is pressed by the bottom edge portion 65A of the rib 65. As a result, the roll sheet 3A is prevented from adhering to the adhesive agent on the fixed blade 41.
- the upstream side edge portion of the roll sheet 3A cut by the cutter unit 8 is likely to adhere to the fixed blade 41 by the adhesive agent on the fixed blade 41. Since only a little of the adhesive agent adheres to the sliding part of the fixed blade 41, the adhesive force is too weak to adhere the roll sheet 3A.
- the portion on which most of the adhesive agent accumulates on the fixed blade is above the sliding part. Supposedly, the roll sheet 3A tends to adhere to the fixed blade 41 at the portion on which most of the adhesive agent accumulates (see the dotted and dashed line in FIG.
- the top face of the roll sheet 3A comes into contact with the bottom edge portion 65A of the rib 65, while the bottom face of the roll sheet 3A comes into contact with the top face of the horizontal part 62A on the regulatory member 62.
- the part of the roll sheet 3A which comes into contact with the bottom edge portion 65A of the rib 65 is defined as the third part of the roll sheet 3A, and the part of the roll sheet 3A which comes into contact with the top face of the horizontal part 62A on the regulatory member 62 is defined as the fourth part of the roll sheet 3A.
- the length from the upstream side edge portion to the third part on the roll sheet 3A almost equals to the horizontal distance from the cutting position to the rib 65.
- the length from the upstream side edge portion of the roll sheet 3A to the fourth part of the roll sheet 3A is longer than the length from the upstream side edge portion to the third part of the roll sheet 3A.
- the fourth part is on the downstream side of the third part.
- the roll sheet 3A on which the peeling paper 3E is bonded via the adhesive agent layer 3D has a predetermined elasticity.
- the bottom edge portion 65A of the rib 65 is arranged lower than the bottommost edge portion 41A of the fixed blade 41.
- the portion on which most of the adhesive agent accumulates of the fixed blade 41 is the sliding part with the bottommost edge portion 41A. In other words, the adhesive agent accumulation portion is above the bottommost edge portion 41A of the fixed blade 41. Therefore, the adhesive agent accumulation portion is further separated from the bottom edge portion 65A of the rib 65 on the vertical direction of the conveyance direction.
- the roll sheet 3A when the roll sheet 3A is wound in a small radius, since the roll sheet 3A is pulled out from the top side, the roll sheet 3A itself may curve in a downward direction. Thereby, the upstream side edge portion of the roll sheet 3A cut by the cutter unit 8 is not likely to be raised.
- the roll sheet 3A when a long time has passed since the last usage of the printing apparatus 1, since the roll sheet 3A is maintained in a sandwiched state between the platen roller 26 and the thermal head 31, upward warpage occurs on one part of the roll sheet 3A. Only on the part of the roll sheet 3A where upward warpage occurs, there is some possibility to raise upstream side edge portion of the roll sheet 3A cut by the cutter unit 8. That is, the possibility to adhere the roll sheet 3A to the fixed blade 41 is small. It is because the bottom edge portion 65A of the rib 65 is arranged lower than the bottommost edge portion 41A of the fixed blade 41. Therefore, the roll sheet 3A is prevented from adhering to the fixed blade 41 certainly.
- the roll sheet 3A maybe discharged from the sheet discharging portion certainly, the jam of the roll sheet 3A at the cutter unit 8 may be prevented, and the discharging capability of the printing apparatus may be improved dramatically.
- the bottom edge portion 61A of the projecting portion 61 is always within the circle.
- the predetermined radius R is within the range of the real radius of the roll sheet 3A which is wound around the roll sheet holder 3.
- the center O is below the top edge portion 64A of the roll sheet receiving portion 64 and the top edge portion 62D on the downstream side of the regulatory member 62.
- the roll sheet 3A which is cut at the cutter unit 8 comes into contact with the sloping surface of the roll sheet receiving portion 64, and is guided in an obliquely upward direction to the downstream side of the conveyance direction.
- the one surface is supported by the top edge portion 64A of the roll sheet receiving portion 64 and the top edge portion 62D on the downstream side of the regulatory member 62, while the other surface is pressed by the bottom edge portion 61A of the projecting portion 61.
- the long size roll sheet 3A passes between the top edge portion 64A of the roll sheet receiving portion 64 and the bottom edge portion 61A of the projecting portion 61, and also passes between the bottom edge portion 61A of the projecting portion 61 and the top edge portion 62D on the downstream side of the regulatory member 62.
- the downstream side tip of the roll sheet 3A may be hanging in the air, or may reach the installation surface on which the printing apparatus is installed, or may reach the top side of the tray member 46 which is in an open state.
- the downstream side tip face of the roll sheet 3A may finally come into contact with the installation surface or the tray member 46.
- the roll sheet 3A may slip on the installation surface or the surface of the tray member 46 with the tip portion of the roll sheet 3A lying sideways.
- the roll sheet 3A when the roll sheet 3A comes into contact with the installation surface or the downstream side end face of the tray member 46 from a hanging state, the roll sheet 3A may bump into installation surface or the surface of the tray member 46 in a vertical direction. In this case, since the roll sheet 3A has a predetermined elasticity, when the roll sheet 3A is further sent forth, the tip of the roll sheet 3A may bump into installation surface or the surface of the tray member 46 in a vertical direction without lying sideways.
- the downstream side tip of the roll sheet 3A may maintain the vertical bumping state. Also, after the downstream side tip bumps into installation surface or the surface of the tray member 46 in a vertical direction, the roll sheet 3A itself may bend before being cut. Thus, when the roll sheet 3A is cut, the roll sheet 3A itself is likely to stretch. Or the gravity center of the roll sheet 3A discharged from the sheet discharge slot 6A, is on the rear part in the horizontal direction compared with the position of the downstream side tip. Thereby, when the roll sheet 3A is cut, the roll sheet 3A may likely fall over toward the rear direction due to its own weight.
- the tip of roll sheet 3A on the upstream side near the cutter unit 8 is likely to move toward the upstream side in the conveyance direction.
- the long size roll sheet 3A may be prevented from falling down to the movable blade 42. These three spots are the top edge portion 64A of the roll sheet receiving portion 64, the top edge portion 62D on the downstream side of the regulatory member 62, and the bottom edge portion 61A of the projecting portion 61. As a result, the long size roll sheet 3A is prevented from being cut twice.
- the bottom surface of the long size roll sheet 3A (printing surface side) is supported by the top edge portion 64A of the roll sheet receiving portion 64 and the top edge portion 62D on the downstream side of the regulatory member 62, while the top surface (the platen roller 26 side) is pressed by the bottom edge portion 61A of the projecting portion 61.
- the roll sheet 3A Since the roll sheet 3A is wound around the roll sheet holder 3, it has a curving habit with a predetermined curvature. Furthermore, the curvature of the roll sheet 3A is bigger at the part nearer to the wound core of the roll sheet 3A.
- the roll sheet 3A may be fixed on three spots, wherein these three spots are the top edge portion 64A of the roll sheet receiving portion 64, the top edge portion 62D on the downstream side of the regulatory member 62, and the bottom edge portion 61A of the projecting portion 61.
- these three spots are the top edge portion 64A of the roll sheet receiving portion 64, the top edge portion 62D on the downstream side of the regulatory member 62, and the bottom edge portion 61A of the projecting portion 61.
- the long size roll sheet 3A may be prevented from falling over to the movable blade 42, and also long size roll sheet 3A may be prevented from being cut twice.
- an edge portion 46B (corner portion) at the top of the tray member 46 locates on the hithermost position of the printing apparatus 1.
- the edge portion 46 B is also on the circumference which starts from a center O with a predetermined radius R, wherein the circumference passes the top edge portion 64A of the roll sheet receiving portion 64 and the top edge portion 62D on the downstream side of the regulatory member 62.
- an edge 62E Adjacent to the concave portion 46A of the tray member 46 in a closed state, an edge 62E (corner portion, see FIG. 11 ) is formed on the front cover 6 at the downstream side of the top edge portion 62D.
- the edge 62E locates on the hithermost position of the printing apparatus 1 except the tray member 46.
- the edge portion 62E is also on the circumference which starts from a center O with a predetermined radius R, wherein the circumference passes the top edge portion 64A of the roll sheet receiving portion 64 and the top edge portion 62D on the downstream side of the regulatory member 62.
- the sheet discharging path portion 60 includes a projecting portion 61, a regulatory member 62, a roll sheet receiving portion 64, and a rib 65.
- the discharging path of the roll sheet 3A is regulated.
- the roll sheet 3A is prevented from moving to the bottommost end portion of the movable blade 42 together with the adhesive agent.
- the bottom edge portion 65A of the rib 65 constructing the upper part of the sheet discharging path portion 60 with the projecting portion 61 is arranged lower than the bottommost edge portion 41A of the fixed blade 41.
- the roll sheet 3A is regulated between the projecting portion 61 and the rib 65, as a result, the roll sheet 3A is prevented from adhering to the adhesive agent on the fixed blade 41. Therefore, the jam of the roll sheet 3A at the cutter unit 8 may be prevented, and the discharging capability of the printing apparatus may be improved dramatically.
- the projecting portions 61, 61 may also use thick members on the direction vertical to the conveyance direction with a predetermined space therebetween, or may use plural rib members with thin width.
- the projecting portion 61 may be improved or modified in various ways if the projecting portion 61 is capable to press the roll sheet corresponding to the minimum roll sheet width when short non-specified length roll sheet is made.
- the cutting method is not only limited to the guillotine cutter, it may also be applicable in the sliding cutter and the other cutting method.
- This invention may also be applied to the cutting plotter and the other sheet processing apparatuses besides the printing apparatus.
- the movable blade 42 may be on the bottom side while the fixed blade 41 is on the top side.
- the movable blade 42 may be on the top side and the fixed blade 41 may be on the bottom side.
- the bottom edge portion 65A of the rib 65 may come into contact with the first part of the short roll sheet 3A instead of the rear edge portion 62F of the regulatory member 62 on sheet discharging path portion 60 or the top edge portion 64A of the roll sheet receiving portion 64, while the horizontal part 62A on the regulatory member 62 may come into contact with the second part of the short roll sheet 3A instead of bottom face of the projecting portion 61.
- the construction to prevent the roll sheet 3A cut by the cutter unit 8 from adhering to the fixed blade 41 by the adhesive agent on the fixed blade 41 it is not limited to the construction in which the movable blade 42 is on the bottom side and the fixed blade 41 is on the top side.
- the regulatory member 62 or the roll sheet receiving portion 64 is constructed individually, the regulatory member 62 and the roll sheet receiving portion 64 may also be integrated.
- the projecting portion 61 or the rib 65 is constructed individually in this embodiment, the projecting portion 61 and the rib 65 may also be integrated.
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Description
- The present application claims priority from Japanese Patent Application No.
JP 2007-194882 JP 2008-152773 - The present invention relates to a sheet processing apparatus having a sheet discharging path portion for discharging sheet with short length in its conveyance direction when the roll-shaped sheet is cut.
- Conventionally, a variety of sheet processing apparatuses having the sheet discharging mechanism for discharging the cut sheet from the roll sheet discharge slot have been proposed.
- For example, there is available a sheet processing apparatus having a discharging device for discharging the cut roll sheet through the feeding force of a pair of roll sheet feeding rollers to the exterior of the printer. In the sheet processing apparatus, the pair of roll sheet feeding rollers is allocated on the downstream side of the cutting device constructed from a movable blade and a fixed blade (for example, see Japanese Patent Application Laid-open No.
2000-15879 - However, in the printer having a guillotine cutter described in the above-mentioned
Patent Reference 1, the sheet discharging roller is equipped on the vicinity of the downstream side of the guillotine cutter. The sheet discharging roller is used to convey the cut printing media to the exterior of the printer. Also a driven roller is provided above the sheet discharging roller, wherein the driven roller is used to convey roll sheet via the cooperation with the sheet discharging roller. As described above, since a pair of roll sheet feeding rollers is provided on the downstream side of the cutting device, the space between the cutting device and the sheet discharging portion is very big, the sheet processing apparatus may not be downsized. As a result, it is difficult to make the sheet processing apparatus thin-modeled, and also the component construction may get complicated. - Accordingly, a compact sheet processing apparatus is thinkable, in which cut roll sheet is discharged from the sheet discharge slot without equipping a pair of roll sheet feeding rollers on the downstream side of the cutting device.
- However, in such sheet processing apparatus, since the roll sheet is constructed by laminating the peeling paper via the adhesive agent layer on the base layer, after the roll sheet is cut by the guillotine cutter, the adhesive agent may adhere on the movable blade of the cutter. Thereby, when roll sheet with short length in the conveyance direction is made, the rear end of the short roll sheet may move downward together with the movable blade due to the adherence property of the adhesive agent adhered to the movable blade. Accordingly, the roll sheet may be drawn in to the bottommost end of the cutter due to the adhesive agent adhered to the movable blade, and it may cause the discharging path of the roll sheet blocked up.
- From
EP 1 900 535 A2 , which forms prior art under Art. 54(3) EPC and forms the basis for the preamble of claim 1 a tape printing apparatus is known which is capable of improving durability performance of a cutting mechanism constituted of a fixed blade and a moveable blade tremendously. The bottom edge portion of an opening portion in a rear frame is formed to be located below the bottom most end portion of the V-shaped tip of this moveable blade by a predetermined height when the moveable blade is located at the lowest point, that is, a home position. That is, even when the moveable blade is located at the lowest point, there is formed a gap of a predetermined distance in the vertical direction between the bottom most end portion of the V-shaped tip of the moveable blade and the bottom end edge portion of the opening portion. - From
EP 1 559 566 A1 - From
US 2007/0065217 A1 a printer is known, wherein a plurality of rips are provided on a cut paper discharge guide and an upper cover which define a discharge port for discharging a cut paper. The rips hold a cut paper in width direction. Even if a cut paper having a high degree of curl is supplied when a roll diameter of a roll paper is reduced, it is possible to prevent a paper jam such as falling or clogging of the cut paper. It is desirable that the rips provided on the cut paper discharge guide and the upper cover are disposed an alternate pattern along the width direction of the discharge port. This arrangement is particularly effective in a printer having an inclined paper passage. - From
EP 1 541 363 Aclaim 1, except that the paper roll is not an adhesive type. - Accordingly, the present invention has been made to solve the above-described problem and has an object to provide a sheet processing apparatus capable of preventing the short roll sheet from being drawn in to the bottommost end of the cutter due to the adhesive agent adhered to the movable blade when the movable blade is moving, and to provide a sheet processing apparatus capable of discharging the cut roll sheet certainly from the sheet discharge slot, and improving dramatically the discharging capability for roll sheet.
- To achieve the purpose of the present invention, there is provided a sheet processing apparatus as claimed in
claim 1. - In the sheet processing apparatus according to
claim 1, the sheet processing apparatus comprises a first regulatory member arranged on the movable blade side across the conveyance path for the roll sheet cut by the cutting device, and a second regulatory member arranged on the fixed blade side across the conveyance path for the roll sheet cut by the cutting device, the first regulatory member comprises a first contacting portion with which the roll sheet cut by the cutting device makes contact on the vicinity of the cutting device when the movable blade on which the roll sheet cut by the cutting device is adhered to by the adhesive agent moves to open, the second regulatory member comprises a second contacting portion with which the roll sheet cut by the cutting device makes contact on the downstream side of the first contacting portion when the movable blade on which the roll sheet cut by the cutting device is adhered to by the adhesive agent moves to open. - Thereby, the roll sheet adhered to the movable blade may be peeled from the movable blade, especially, the short roll sheet may be discharged certainly without being drawn in by the movable blade, and thus the jam of the roll sheet may be prevented.
- Further developments of the present invention are given in the dependent claims.
-
-
FIG. 1 is a perspective view of an appearance of a printing apparatus according to the embodiment as seen from its front face; -
FIG. 2 is a perspective view of an appearance of the printing apparatus according to the embodiment as seen from its rear face; -
FIG. 3 is a perspective view showing a condition in which a roll sheet is loaded in the printing apparatus according to the embodiment by opening a top cover, as seen from above to the right; -
FIG. 4 is a perspective view showing a condition in which the roll sheet is unloaded in the printing apparatus according to the embodiment by opening the top cover as seen from above to the left; -
FIG. 5 is a side sectional view showing a condition in which the roll sheet holder is loaded in the printing apparatus according to the embodiment; -
FIG. 6 is a schematic perspective view showing a condition in which the roll sheet is unloaded and the top cover of the printing apparatus according to the embodiment is opened as seen from above to the left behind; -
FIG. 7 is a front view of a cutter unit in the printing apparatus according to the embodiment; -
FIG. 8 is a sectional view showing the general description of the paperdischarging path portion 60 and the circumference thereof according to the embodiment; -
FIG. 9 is a pattern diagram showing a discharging path of the short roll sheet in the case adhesive agent adheres on the movable blade in the printing apparatus according to the embodiment; -
FIG. 10 is a pattern diagram showing a discharging path of the short roll sheet in the case adhesive agent adheres on the fixed blade in the printing apparatus according to the embodiment; -
FIG. 11 is a pattern diagram showing a discharging path of the long size roll sheet in the printing apparatus according to the embodiment; and -
FIG. 12 is an enlarged pattern diagram showing a discharging portion in the case of the long size roll sheet in the printing apparatus according to the embodiment. - A detailed description of a preferred embodiment of a printing apparatus embodying the present invention will now be given referring to the accompanying drawings.
- Hereinafter, an exemplary embodiment of a printing apparatus of the present invention will be described in detail with reference to the drawings.
- First, the schematic structure of the printing apparatus loaded with a roll sheet holder according to the embodiment will be described based on
FIGS. 1 to 6 . - As shown in
FIGS. 1 to 6 , in theprinting apparatus 1, amain body case 2 and aroll sheet holder 3 are accommodated in a roll sheetholder accommodating portion 4. A non-specifiedlength roll sheet 3A (hereinafter referred to as "roll sheet 3A") with a predetermined width is wound on theroll sheet holder 3. The top portion of theprinting apparatus 1 is covered with atop cover 5 made of resin, the cover being attached to the top edge portion on the rear side so that it can be opened or closed freely. - A
front cover 6 is formed on the front side of thetop cover 5. Apower button 7A, afeed button 7B and acut button 7C are provided on the top end portion of the front cover 6 (central part inFIG. 1 ). Thefeed button 7B discharges a predetermined length of theroll sheet 3A in a conveyance direction while it is kept pressed, and thecut button 7C cuts theroll sheet 3A by driving the cutter unit 8 (seeFIG. 7 ) covered with thefront cover 6 when it is pressed. Thefront cover 6 includes asheet discharge slot 6A for discharging the printedroll sheet 3A to the exterior on the front end portion. - As shown in
FIG. 1 ,FIG. 3 andFIG. 5 , the front side of thefront cover 6 is covered by atray member 46. Thetray member 46 is attached on the bottom end portion of thefront cover 6 so as to be opened or closed freely. Aconcave portion 46A is formed on the top end of thetray member 46. Thetray member 46 may be opened by putting fingers at theconcave portion 46A and moving thetray member 46 rotationally to a front side of theprinting apparatus 1. As shown inFIG. 5 , atray accommodating portion 47 is formed in the inner side of thetray member 46. Thetray accommodating portion 47 is accommodated in a locking state to thetray member 46 by moving a dischargingtray 48 rotationally to the inner side of thetray member 46. When thetray member 46 is opened, among theroll sheet 3A discharged from thesheet discharge slot 6A, theroll sheet 3A which slides down from the surface of thefront cover 6 are received on thetray member 46. - As shown in
FIG. 2 , aninlet 9 to which a power cord (not shown) is connected is disposed on the right side end portion of the rear face portion of themain body case 2. And a universal serial bus (USB)connector 10 connected to a personal computer (not shown) is provided on the left side end portion of the rear face portion of themain body case 2. - As shown in
FIG. 5 , theroll sheet 3A is constituted by bonding together a long size heat sensitive sheet (so-called thermal paper) 3C and a peelingpaper 3E via anadhesive agent layer 3D. The heatsensitive sheet 3C has self color generating characteristic, and theadhesive agent layer 3D is provided on the rear surface of the heatsensitive sheet 3C. Theroll sheet 3A is wound around theroll sheet holder 3 so that the printing surface of the heatsensitive sheet 3C is located inside. - As shown in
FIG. 3 , theroll sheet holder 3 has a positioningmember 12. Anattachment member 13 having a substantially rectangular cross section is projected outward from the positioningmember 12. Theprinting apparatus 1 has aholder supporting member 15 which may support theroll sheet holder 3 on a side end portion (the right side end portion inFIG. 3 ) in a substantially vertical direction to the conveyance direction of the roll sheetholder accommodating portion 4. Thisholder supporting member 15 includes a firstpositioning groove portion 16 formed in a substantially longitudinally long U shape in its front view. The firstpositioning groove portion 16 is open upward in the width direction and at the same time open to both sides in the width direction. - The
roll sheet holder 3 has a guide member 20 (seeFIG. 3 ). As shown inFIG. 6 , aloading portion 21 on which the tip end portion of theguide member 20 is to be placed is provided in the roll sheetholder accommodating portion 4. Theloading portion 21 is extended substantially horizontally from the rear end portion of an insertion port 18 (seeFIG. 5 ) toward the top end portion on the front side of the roll sheetholder accommodating portion 4. Theinsertion port 18 is a portion to which theroll sheet 3A is to be inserted. Five secondpositioning groove portions 22A to 22E are formed at an edge corner portion on the rear side in the conveyance direction of thisloading portion 21. The five secondpositioning groove portions 22A to 22E have a substantially L-shaped section corresponding to a plurality of width dimensions of theroll sheet 3A. As shown inFIG. 5 , the secondpositioning groove portions 22A to 22E are formed so that the bottom end portion on the front end to come into contact with theloading portion 21 of theguide member 20 constituting theload sheet holder 3 can be fitted thereto from above. - As shown in
FIG. 4 , a position determiningconcave portion 4A is formed in a predetermined depth (about 1.5 to 3 mm in this embodiment) in the bottom portion of the roll sheetholder accommodating portion 4. The position determiningconcave portion 4A has a landscape quadrangle shape in its plan view. The position determiningconcave portion 4A is formed substantially vertically to the conveyance direction from the inside proximal end portion of theholder supporting member 15 up to the proximal end portion of an opposing side face. Further, a determiningconcave portion 4B is formed on the inside proximal end of theholder supporting member 15 of the position determiningconcave portion 4A. The determiningconcave portion 4B has a rectangular shape with a longer side along the conveyance direction as seen in its plan view. And a portion opposing a sheet determining portion (not shown) extends inward substantially at right angle from the bottom end portion of thepositioning portion 12. And this extending portion of the determiningconcave portion 4B is more deeply formed than that of the position determiningconcave portion 4A by a predetermined depth (a depth of about 1.5 to 3 mm in this embodiment). - This determining
concave portion 4B includes six sheet determining sensors P1, P2, P3, P4, P5, P6 arranged in an L-shape. Each sheet determining sensor is constituted of push type micro switch or the like in order to determine the type of theroll sheet 3A and material of the heatsensitive sheet 3C, the width of theroll sheet 3A and the like. In the meantime, the six sheet determining sensors P1 to P6 are indicated inFIG. 4 . - The sheet determining sensors P1 to P6 are constituted of a known mechanical switch composed of a plunger, micro switch and the like. And the top end portion of each plunger is provided to project from the bottom face portion of the determining
concave portion 4B toward the vicinity of the bottom face portion of the position determiningconcave portion 4A. To each of the sheet determining sensors P1 to P6, it is determined whether or not a sensor hole (not shown) is formed. Each sensor hole is formed in a sheet determining portion which extends inward substantially at right angle from the bottom end portion of the positioningmember 12. And plural parameters are detected based on the ON or OFF signals of the sensor holes. These parameters include the type of theroll sheet 3A loaded in theroll sheet holder 3, material of the heatsensitive sheet 3C, width of theroll sheet 3A and the like. - In each sheet determining sensor P1 to P6 according to the embodiment, its plunger is projected up to the vicinity of the bottom face of the position determining
concave portion 4A from the bottom face of the determiningconcave portion 4B, thus the micro switch is kept OFF normally. Then, when each sensor hole in the sheet determining portion is located at a position opposing each of the sheet determining sensors P1 to P6, the plunger is not pressed so that the micro switch is kept off and thus, an "OFF" signal is output. On the other hand, if each sensor hole in the sheet determining portion is not located at a position opposing each of the sheet determining sensors P1 to P6, the plunger is pressed down to turn the micro switch to an "ON" state and then an "ON" signal is output. Thus, each of the sheet determining sensors P1 to P6 outputs 6-bit "0", "1" signals. And when the sheet determining sensors P1 to P6 are all in an "OFF" state, namely, no roll sheet is mounted on theroll sheet holder 3, a 6-bit signal of "000000" is output. - A side end portion (right end portion in
FIG. 3 ) on the side of theholder supporting member 15 of theinsertion port 18 is formed at a position opposing the inside end face of the positioningmember 12, which is to be fitted to theholder supporting member 15. Thereby, theroll sheet holder 3 on which theroll sheet 3A is loaded is detachably mounted in the roll sheetholder accommodating portion 4. As shown inFig. 6 , theroll sheet holder 3 is mounted by fitting theattachment member 13 of the positioningmember 12 into the firstpositioning groove portion 16 of theholder supporting member 15. And a bottom end portion of the front end of theguide member 20 is fitted into any of secondpositioning groove portions 22A to 22E so that the bottom end portion of theguide member 20 is fitted into a positioningconcave portion 4A to make a contact therewith. - As shown in
FIG. 4 , aslide member 29 is provided on the other side end portion of theholder supporting member 15 in the roll sheetholder accommodating portion 4. Theslide member 29 is attached to the side end portion of the main body case 2 (left side end portion inFIG. 4 ) and supports thetop cover 5. Theslide member 29 may execute the up and down movement operation of the after-mentionedthermal head 31 while supporting thetop cover 5 when it is slid. - As shown in
FIG. 5 , aplaten roller 26 is supported rotatably on the bottom side of the front end portion of thefront cover 6. Athermal head 31 is provided on the bottom side of theplaten roller 26. The up and down movement operation ofthermal head 31 is executed by theslide member 29. Theroll sheet 3A is printed between theplaten roller 26 and thethermal head 31. In other words, when thetop cover 5 is closed by sliding theslide member 29, thethermal head 31 is moved upward, and theroll sheet 3A is depressed against theplaten roller 26 so as to enable printing to be carried out. - As shown in
FIG.3 andFIG.4 , on the left and right side wall of the front side of the roll sheetholder accommodating portion 4, anelastic locking part 14 is provided. Each of theelastic locking parts 14 is capable to deform elastically to the inner side of the roll sheetholder accommodating portion 4. And a lockingprojection 14A is formed respectively on each elastic lockingpart 14. The lockingprojection 14A having a triangle sectional side view projects toward an outside direction of the lockingpart 14. Each elastic lockingpart 14 is adapted to engage with each lockingconcave portion 17 formed on the side edge portion of the opening portion on thetop cover 5. One of the lockingconcave portions 17 is shown inFIG. 3 , and the other lockingconcave portion 17 is shown inFIG. 4 . - Consequently, each elastic locking
part 14 is engaged with each lockingconcave portion 17 respectively by moving thetop cover 5 rotationally to a front side direction. Thus, thetop cover 5 is maintained in a closed state. And aconcave portion 5A is formed at the central portion of the front end on thetop cover 5. When user puts fingers on theconcave portion 5A to move thetop cover 5 rotationally to a rear side direction, the engagement between each elastic lockingpart 14 and each lockingconcave portion 17 is released. Thus, thetop cover 5 is enabled to be opened. - A pushing
pawl portion 25 is provided on the left side of the front face of theconcave portion 5A on thetop cover 5. The pushingpawl portion 25 projects a predetermined length to a front side direction. A topcover detecting switch 28 is provided on the position which comes into contact with the pushingpawl portion 25 on themain body case 2 when thetop cover 5 is closed. The topcover detecting switch 28 is constituted of micro switch and the like. The topcover detecting switch 28 may detect whether it is pressed by the pushingpawl portion 25 or not. In other words, topcover detecting switch 28 may detect whether thetop cover 5 is closed or not. - On the other hand, when the
top cover 5 is opened, the pushingpawl portion 25 is disengaged from the topcover detecting switch 28. In conjunction with the opening of thetop cover 5 by theslide member 29 which is attached with thetop cover 5, thethermal head 31 is moved downward, and disengages from theplaten roller 26. - As shown in
FIG. 5 , acontrol board 36 is provided on the bottom side of the roll sheetholder accommodating portion 4. On thecontrol board 36, a control circuit portion is formed to drive control each mechanical component based on an instruction from an exterior personal computer and the like. Apower supply board 37 on which a power circuit portion is formed is provided on the bottom side of thethermal head 31. Then, thecontrol board 36 and thepower supply board 37 are covered with abottom face cover 38 which is screwed to the bottom face portion thereof. And thebottom face cover 38 is made of thin steel plate (steel plate so as SPCC about 0.5 mm thick in this embodiment). - When the
top cover 5 is closed as shown inFIG. 5 , thethermal head 31 is moved upward so that theroll sheet 3A is depressed against theplaten roller 26 to enable printing to be carried out. In other words, thethermal head 31 comes into contact with the printing surface of heatsensitive sheet 3C on theroll sheet 3A. Thus the printing of the characters and the like is executed by heating the heatsensitive sheet 3C. Then the printedroll sheet 3A is carried to thecutter unit 8 which is provided on the downstream side of thethermal head 31, and is cut by thecutter unit 8. - Next, the schematic structure of the
cutter unit 8 will be described with reference toFIG. 7. FIG. 7 is a front view of a cutter unit of the printing apparatus according to the embodiment. As shown inFIG. 7 , thecutter unit 8 comprises arear frame 51 and a front frame and the like. Therear frame 51, on which the fixedblade 41 and the like are fixed, is formed in U shape in its plan view, and is disposed on the rear side in the conveyance direction. Thefront frame 52, on which the cuttingmotor 43 and the like are fixed, covers the front side of therear frame 51 in the conveyance direction. - The
cutter unit 8 is constructed from a fixedblade 41 and amovable blade 42 which is shaped in a letter V in its front view. When thecut button 7C is pressed, themovable blade 42 is reciprocated in the vertical direction controlled by a cutting motor 43 (seeFIG. 8 ). The cuttingmotor 43 is constructed from a DC motor and the like. Theroll sheet 3A is cut through the cooperative movement of the fixedblade 41 and themovable blade 42, and is discharged to the discharge gap 63 (seeFIG.8 ). - As shown in
FIG.7 , anelongated opening portion 68 through which theroll sheet 3A is inserted is provided on therear frame 51. Both the right and the left end portions of themovable blade 42 extend upward with a substantially identical width into a gap between the right and the left side end portions of the openingportion 68 and theside wall portions movable blade 42 is situated at the lowest position, eachguide portion blade 41. - The fixed
blade 41 longer than the lateral width of the openingportion 68 is screwed withscrews portion 68. The fixedblade 41 is fixed between the eachside wall portion blade 41 is situated slightly below the top edge portion of the openingportion 68 so that it can make contact with an entire width of theroll sheet 3A. - When the
roll sheet 3A printed at thethermal head 31 is discharged to the openingportion 68 of thecutter unit 8, themovable blade 42 is moved from the lowest position upward in the direction vertical to the conveyance direction by driving the cuttingmotor 43. The bottommost end portion of the V-shaped tip of themovable blade 42 is moved to a position which is above the bottom end portion of the fixedblade 41. Thereby, theroll sheet 3A which is carried to the openingportion 68, is cut over an entire width in the width direction by the cooperation of themovable blade 42 and the fixedblade 41. - On the other hand, when the cutting
motor 43 is stopped, themovable blade 42 moves downward in a direction vertical to the conveyance direction from the cutting position to the bottommost position. At this time, the bottom edge portion of the openingportion 68 is located a little below than the bottommost end portion of the V-shaped tip of themovable blade 42. - Thus, when the cutting
motor 43 is turned ON, themovable blade 42 comes into contact with theadhesive agent layer 3D of the printedroll sheet 3A, and cuts theroll sheet 3A by the cooperation with the fixedblade 41. Thereby, the adhesive agent on theadhesive agent layer 3D of theroll sheet 3A may accumulate on themovable blade 42. - Next, general description of the sheet discharging
path portion 60 and the circumference thereof according to the embodiment will be described with reference toFIGS. 8 to 12 . -
FIG. 8 is a sectional view showing the general description of the sheet dischargingpath portion 60 and the circumference thereof according to the embodiment.FIG. 9 is a pattern diagram showing a discharging path of the short roll sheet in the case that the adhesive agent adheres on the movable blade in the printing apparatus according to the embodiment.FIG. 10 is a pattern diagram showing a discharging path of the short roll sheet in the case that the adhesive agent adheres to the fixed blade in the printing apparatus according to the embodiment.FIG. 11 is a pattern diagram showing a discharging path of the long size roll sheet in the printing apparatus according to the embodiment.FIG. 12 is an enlarged pattern diagram showing a discharging portion in the case of the long size roll sheet in the printing apparatus according to the embodiment. - As shown in
FIGS. 8 to 12 , the sheet dischargingpath portion 60 is provided on the downstream side of thecutter unit 8. The sheet dischargingpath portion 60 includes a projectingportion 61, aregulatory member 62, a rollsheet receiving portion 64, and arib 65. The projectingportion 61 is provided on the downstream side of the fixedblade 41, projecting toward the downstream side of the conveyance direction of theroll sheet 3A. Theregulatory member 62 is provided on the downstream side of themovable blade 42. And theregulatory member 62 is a member having a stepwise structure, extending to the downstream side of the conveyance direction. The rollsheet receiving portion 64 is arranged between themovable blade 42 and theregulatory member 62, constructing the lower part of the sheet dischargingpath portion 60 together with theregulatory member 62. Also the rollsheet receiving portion 64 is a member to guide theroll sheet 3A in an obliquely upward direction. Therib 65 is arranged between the projectingportion 61 and the fixedblade 41, constructing the upper part of the sheet dischargingpath portion 60 together with the projectingportion 61. - The
regulatory member 62 is parallel to the bottom face of the projectingportion 61. Theregulatory member 62 extends to the downstream side along the conveyance direction by keeping a predetermined space with the bottom face of the projecting portion 61 (about 1.2mm in this embodiment). Further, as shown inFIGS. 8 to 12 , theregulatory member 62 includes ahorizontal part 62A, asloping part 62B and a secondhorizontal part 62C. Thesloping part 62B extends from the downstream side edge portion of thehorizontal part 62A along the conveyance direction toward an obliquely downward direction. And the secondhorizontal part 62C extends from the bottom edge portion of thesloping part 62B horizontally toward the downstream side of theregulatory member 62. - A
top edge portion 62D (corner portion) is formed on the downstream side of the secondhorizontal part 62C. Thetop edge portion 62D is on thefront cover 6 connecting with the downstream side of the secondhorizontal part 62C. Thetop edge portion 62D is an edge portion of thefront cover 6 which constructs a same surface with the secondhorizontal part 62C. Thereby, theregulatory member 62 has a stepwise structure including thehorizontal part 62A, thesloping part 62B and the secondhorizontal part 62C. The position of the downstream side edge portion of thehorizontal part 62A is determined by keeping the minimum length of theroll sheet 3A capably being made by theprinting apparatus 1 as the horizontal distance from the cutting position. The tip of the projectingportion 61 projects toward the downstream side to the position almost the same as that of the downstream side edge portion of thehorizontal part 62A. - The
roll sheet 3A which is cut at thecutter unit 8 comes into contact with the inclined surface of the rollsheet receiving portion 64, and is guided toward an obliquely upward direction of the downstream side of the conveyance direction. Then theroll sheet 3A is guided to the discharginggap 63 which is on the downstream side of the rollsheet receiving portion 64. After passing the discharginggap 63, theroll sheet 3A is guided to the position between the projectingportion 61 and theregulatory member 62. - First, general description of the sheet discharging
path portion 60 and the circumference thereof in the case that theshort roll sheet 3A is made will be described with reference toFIGS. 8 to 10 . - The
short roll sheet 3A is cut at thecutter unit 8 and is discharged to the sheet dischargingpath portion 60. When theroll sheet 3A passes the discharginggap 63, the bottom side of theroll sheet 3A comes into contact with therear edge portion 62F of theregulatory member 62 on the sheet dischargingpath portion 60 or thetop edge portion 64A of the rollsheet receiving portion 64, while the top side of theroll sheet 3A comes into contact with the bottom surface of the projectingportion 61. Accordingly, the movement of theroll sheet 3A is regulated. As a result, theroll sheet 3A is prevented from adhering to the adhesive agent on themovable blade 42, and theroll sheet 3A is also prevented from moving to the bottommost end portion of themovable blade 42. - Furthermore, when the length of the
short roll sheet 3A has a length above the distance from the cutting position of thecutter 8 to thebottom edge portion 61A of the projectingportion 61, the top side of theshort roll sheet 3A comes into contact with thebottom edge portion 61A of the projectingportion 61 instead of the bottom surface of the projectingportion 61. On the other hand, the bottom side of theroll sheet 3A comes into contact with therear edge portion 62F of theregulatory member 62 or thetop edge portion 64A of the rollsheet receiving portion 64. - In this case, the
rear edge portion 62F of theregulatory member 62 or thetop edge portion 64A of the rollsheet receiving portion 64 is almost at the same position with thebottom edge portion 61A of the projectingportion 61 on the open/close direction of themovable blade 42 to the fixed blade 41 (up and down direction). In this embodiment, therear edge portion 62F of theregulatory member 62 or thetop edge portion 64A of the rollsheet receiving portion 64 is a little below thebottom edge portion 61A of the projectingportion 61 on the up/down direction. In another embodiment, therear edge portion 62F of theregulatory member 62 or thetop edge portion 64A of the rollsheet receiving portion 64 may be arranged at the same position or a little above thebottom edge portion 61A of the projectingportion 61 on the up/down direction by keeping the same discharging gap therebetween. - In detail, the
movable blade 42 moves upward so as to cut theroll sheet 3A shortly. At that time, the edge portion on the upstream side along the conveyance direction of theroll sheet 3A adheres to themovable blade 42 due to the adhesive agent on themovable blade 42. Themovable blade 42 moves in a downward direction when the cutting of theroll sheet 3A is finished. At this time, the bottom side of theroll sheet 3A comes into contact with therear edge portion 62F of theregulatory member 62 on sheet dischargingpath portion 60 or thetop edge portion 64A of the rollsheet receiving portion 64, while the top side of theroll sheet 3A comes into contact with the bottom surface of the projectingportion 61. The part of theroll sheet 3A which comes into contact with therear edge portion 62F of theregulatory member 62 or thetop edge portion 64A of the rollsheet receiving portion 64 is defined as a first part of theroll sheet 3A, and the part of theroll sheet 3A which comes into contact with the bottom surface of the projectingportion 61 is defined as a second part of theroll sheet 3A. - To the
short roll sheet 3A, the length from the upstream side edge portion to the first part, almost equals to the horizontal distance from the cutting position to therear edge portion 62F of theregulatory member 62 on sheet dischargingpath portion 60 or to thetop edge portion 64A of the rollsheet receiving portion 64. And to theshort roll sheet 3A, the length from the upstream side edge portion to the second part, is longer than the length from the upstream side edge portion theshort roll sheet 3A to the first part. In other words, in case of theshort roll sheet 3A, the second part is on the downstream side of the first part of theroll sheet 3A. - The
roll sheet 3A on which the peelingpaper 3E is bonded via theadhesive agent layer 3D has a predetermined elasticity. Thereby, when force in a downward direction is worked on the edge portion of the upstream side ofroll sheet 3A through the movement of themovable blade 42, a force in a downward direction by the projectingportion 61 works on the second part of the top side of theroll sheet 3A, while a force in an upward direction by therear edge portion 62F of theregulatory member 62 or thetop edge portion 64A of the rollsheet receiving portion 64 works on the bottom side of theroll sheet 3A. Consequently, a reactive force to peel off theroll sheet 3A from the adhesive agent on themovable blade 42 is provided to theroll sheet 3A. As a result, theroll sheet 3A is prevented from adhering to the adhesive agent on themovable blade 42, and being drawn in to the bottommost end portion of themovable blade 42. Jam ofroll sheet 3A at the sheet dischargingpath portion 60 is also prevented so that the roll sheet may be discharged certainly, and the discharging capability of the printing apparatus may be improved dramatically. - Also, when the
roll sheet 3A cut by thecutter unit 8 is shorter, the possibility to be drawn in the printing apparatus by adhering to the adhesive agent on themovable blade 42 is higher. However, the adhesive power of the adhesive agent on themovable blade 42 is not very strong. Therefore, if theroll sheet 3A cut by thecutter unit 8 has a certain length, even when theroll sheet 3A adheres to themovable blade 42, the roll sheet may be peeled from themovable blade 42 due to its own weight without being drawn in by theprinting apparatus 1. On the other hand, when theroll sheet 3A cut by thecutter unit 8 is too short, since the own weight of theroll sheet 3A is too small, theroll sheet 3A still may be drawn in theprinting apparatus 1. - In case of the long
size roll sheet 3A, even when the roll sheet 3Ais drawn in theprinting apparatus 1, at the edge on the opposite side of the side being drawn in by theprinting apparatus 1, a part with a certain length sticks outside without being drawn in. Thereby, it is possible to pull the longsize roll sheet 3A out by holding the sticking-out part. However, in case of theshort roll sheet 3A, once theroll sheet 3A is drawn in theprinting apparatus 1, theroll sheet 3A may be drawn completely in theprinting apparatus 1, or the part which sticks outside is too short to be pulled out. As a result, it is really important to prevent theshort roll sheet 3A from being drawn in by theprinting apparatus 1. - Next, as shown in
FIG. 9 , theregulatory member 62 has a stepwise structure including ahorizontal part 62A, asloping part 62B and a secondhorizontal part 62C. The position of the downstream side edge portion of thehorizontal part 62A is determined by keeping the minimum length of theroll sheet 3A capably being made by theprinting apparatus 1 as the horizontal distance from the cutting position. As a result, when theshort roll sheet 3A is printed continuously, theroll sheet 3A which is printed previously maybe pushed out by theroll sheet 3A printed afterward. Theroll sheet 3A discharged from the sheet dischargingpath portion 60 passes thesloping part 62B and is discharged to the exterior of theprinting apparatus 1 smoothly without being piled up athorizontal part 62A of the sheet dischargingpath portion 60. Thus since theregulatory member 62 has a stepwise structure, the jam of theroll sheet 3A on the sheet dischargingpath portion 60 may be prevented, and the discharging capability of the printing apparatus may be improved dramatically. - Furthermore, as shown in
FIG. 3 , a predetermined space is provided between the two projectingportions 61 in this embodiment. When the roll sheet having a minimum width of the non-specified length is made, the leftside projecting portion 61 on the roll sheet conveyance direction (the rightside projecting portion 61 inFIG. 3 ), is provided in the middle of the minimum width of the non-specified length roll sheet. Accordingly, when the roll sheet having a minimum width of the non-specified length is made, theroll sheet 3A is pressed by the leftside projecting portion 61. Thus, theroll sheet 3A is regulated by the projectingportion 61 and theregulatory member 62 or thetop edge portion 64A of the rollsheet receiving portion 64. As a result, theroll sheet 3A may be discharged smoothly from the sheet dischargingpath portion 60. - On the other hand, when the non-specified length roll sheet with a wider width is made, the
roll sheet 3A is pressed by both of the left and the rightside projecting portions 61. As a result, theroll sheet 3A may be discharged smoothly from the sheet dischargingpath portion 60, and the discharging capability of the printing apparatus may be improved dramatically. - Thereby, because a predetermined space (for example, a space to which the fingers may be inserted) is provided between plural projecting
portions 61. Even when the cutshort roll sheet 3A gets jammed in the sheet dischargingpath portion 60, theroll sheet 3A may be pulled out simply by the user with hands, thus, the printing apparatus may be recovered easily from the jam of theroll sheet 3A at the sheet dischargingpath portion 60. And in the first place, theshort roll sheet 3A is easily to be pulled out from theprinting apparatus 1. -
FIG. 10 is a pattern diagram showing a discharging path of the short roll sheet in the case that the adhesive agent adheres on the fixed blade in the printing apparatus according to the embodiment. As shown inFIG. 10 , therib 65, which is arranged on the upstream side of the projectingportion 61, constructs the upper part of the sheet dischargingpath portion 60 together with the projectingportion 61. Thebottom edge portion 65A of therib 65 is arranged lower than thebottommost edge portion 41A of the fixed blade 41 (the difference is about 0.5mm to 1mm in this embodiment). - The adhesive agent accumulated on the
movable blade 42 may transfer to the fixedblade 41 due to the sliding movement between the fixedblade 41 and themovable blade 42. At this moment, theroll sheet 3A tends to adhere to the fixedblade 41 due to the adhesive agent (see the dotted and dashed line inFIG. 10 ). Thebottom edge portion 65A of therib 65 adjacent to the projectingportion 61 is arranged lower than thebottommost edge portion 41A of the fixedblade 41, thereby, theroll sheet 3A is pressed by thebottom edge portion 65A of therib 65. As a result, theroll sheet 3A is prevented from adhering to the adhesive agent on the fixedblade 41. - In detail, only a little of the adhesive agent is adhered to the sliding part of the fixed
blade 41 with themovable blade 42, most of the adhesive agent is accumulated on the portion adjacent to the sliding part which is located above the sliding part. Furthermore, since the tip of themovable blade 42 is V-shaped, the adhesive agent may also accumulate on the V-shaped tip. - When the
roll sheet 3A is cut, the upstream side edge portion of theroll sheet 3A cut by thecutter unit 8 is likely to adhere to the fixedblade 41 by the adhesive agent on the fixedblade 41. Since only a little of the adhesive agent adheres to the sliding part of the fixedblade 41, the adhesive force is too weak to adhere theroll sheet 3A. The portion on which most of the adhesive agent accumulates on the fixed blade is above the sliding part. Supposedly, theroll sheet 3A tends to adhere to the fixedblade 41 at the portion on which most of the adhesive agent accumulates (see the dotted and dashed line inFIG. 10 ), the top face of theroll sheet 3A comes into contact with thebottom edge portion 65A of therib 65, while the bottom face of theroll sheet 3A comes into contact with the top face of thehorizontal part 62A on theregulatory member 62. The part of theroll sheet 3A which comes into contact with thebottom edge portion 65A of therib 65 is defined as the third part of theroll sheet 3A, and the part of theroll sheet 3A which comes into contact with the top face of thehorizontal part 62A on theregulatory member 62 is defined as the fourth part of theroll sheet 3A. - The length from the upstream side edge portion to the third part on the
roll sheet 3A, almost equals to the horizontal distance from the cutting position to therib 65. The length from the upstream side edge portion of theroll sheet 3A to the fourth part of theroll sheet 3A is longer than the length from the upstream side edge portion to the third part of theroll sheet 3A. In other words, the fourth part is on the downstream side of the third part. Theroll sheet 3A on which the peelingpaper 3E is bonded via theadhesive agent layer 3D has a predetermined elasticity. - The
bottom edge portion 65A of therib 65 is arranged lower than thebottommost edge portion 41A of the fixedblade 41. The portion on which most of the adhesive agent accumulates of the fixedblade 41 is the sliding part with thebottommost edge portion 41A. In other words, the adhesive agent accumulation portion is above thebottommost edge portion 41A of the fixedblade 41. Therefore, the adhesive agent accumulation portion is further separated from thebottom edge portion 65A of therib 65 on the vertical direction of the conveyance direction. - In this situation, when the upstream side edge portion of the
roll sheet 3A is to be raised to the height of the portion on the fixedblade 41 on which the adhesive agent is accumulated, a downward force is worked on the third part of theroll sheet 3A through thebottom edge portion 65A of therib 65, and an upward force is worked on the fourth part of theroll sheet 3A through the top face of thehorizontal part 62A on theregulatory member 62. As a result, the upstream side edge portion of theroll sheet 3A may not be raised to the height of the portion on which the adhesive agent of the fixedblade 41 is accumulated, and theroll sheet 3A may also not adhere to the fixedblade 41. - Furthermore, when the
roll sheet 3A is wound in a small radius, since theroll sheet 3A is pulled out from the top side, theroll sheet 3A itself may curve in a downward direction. Thereby, the upstream side edge portion of theroll sheet 3A cut by thecutter unit 8 is not likely to be raised. However, when a long time has passed since the last usage of theprinting apparatus 1, since theroll sheet 3A is maintained in a sandwiched state between theplaten roller 26 and thethermal head 31, upward warpage occurs on one part of theroll sheet 3A. Only on the part of theroll sheet 3A where upward warpage occurs, there is some possibility to raise upstream side edge portion of theroll sheet 3A cut by thecutter unit 8. That is, the possibility to adhere theroll sheet 3A to the fixedblade 41 is small. It is because thebottom edge portion 65A of therib 65 is arranged lower than thebottommost edge portion 41A of the fixedblade 41. Therefore, theroll sheet 3A is prevented from adhering to the fixedblade 41 certainly. - As a result, the
roll sheet 3A maybe discharged from the sheet discharging portion certainly, the jam of theroll sheet 3A at thecutter unit 8 may be prevented, and the discharging capability of the printing apparatus may be improved dramatically. - Next, general description of the sheet discharging
path portion 60 and the circumference thereof when the longsize roll sheet 3A is made, will be described with reference toFIGS. 11 and12 . - As shown in
FIG. 12 , when a circle with a center O and a predetermined radius R is drawn, wherein the circle passes thetop edge portion 64A of the rollsheet receiving portion 64 and thetop edge portion 62D on the downstream side of the regulatory member 62 (a circular arc which projects to top side, see chain line inFIG. 12 ), thebottom edge portion 61A of the projectingportion 61 is always within the circle. Further, the predetermined radius R is within the range of the real radius of theroll sheet 3A which is wound around theroll sheet holder 3. And the center O is below thetop edge portion 64A of the rollsheet receiving portion 64 and thetop edge portion 62D on the downstream side of theregulatory member 62. - The
roll sheet 3A which is cut at thecutter unit 8 comes into contact with the sloping surface of the rollsheet receiving portion 64, and is guided in an obliquely upward direction to the downstream side of the conveyance direction. As shown in .FIG. 11 , on the rear end portion of the longsize roll sheet 3A, the one surface is supported by thetop edge portion 64A of the rollsheet receiving portion 64 and thetop edge portion 62D on the downstream side of theregulatory member 62, while the other surface is pressed by thebottom edge portion 61A of the projectingportion 61. In other words, the longsize roll sheet 3A passes between thetop edge portion 64A of the rollsheet receiving portion 64 and thebottom edge portion 61A of the projectingportion 61, and also passes between thebottom edge portion 61A of the projectingportion 61 and thetop edge portion 62D on the downstream side of theregulatory member 62. - Before the
roll sheet 3A is cut, corresponding to its length, the downstream side tip of theroll sheet 3A may be hanging in the air, or may reach the installation surface on which the printing apparatus is installed, or may reach the top side of thetray member 46 which is in an open state. When theroll sheet 3A is further sent forth while it is hanging in the air, the downstream side tip face of theroll sheet 3A may finally come into contact with the installation surface or thetray member 46. At this time, if theroll sheet 3A bumps into the installation surface or the surface of thetray member 46 at an angle, when theroll sheet 3A is further sent forth, theroll sheet 3A may slip on the installation surface or the surface of thetray member 46 with the tip portion of theroll sheet 3A lying sideways. - In this situation, when the
roll sheet 3A is cut, all of theroll sheet 3A which lose their supporting may slide and fall down theprinting apparatus 1 on the installation surface or the surface of thetray member 46. Or if the gravity center of theroll sheet 3A discharged from thesheet discharge slot 6A, is on the rear part in the horizontal direction compared with the position of the downstream side tip, when theroll sheet 3A is cut, theroll sheet 3A may likely fall over toward the rear direction due to its own weight. - In another case, when the
roll sheet 3A comes into contact with the installation surface or the downstream side end face of thetray member 46 from a hanging state, theroll sheet 3A may bump into installation surface or the surface of thetray member 46 in a vertical direction. In this case, since theroll sheet 3A has a predetermined elasticity, when theroll sheet 3A is further sent forth, the tip of theroll sheet 3A may bump into installation surface or the surface of thetray member 46 in a vertical direction without lying sideways. - In this case, when the
roll sheet 3A is cut, the downstream side tip of theroll sheet 3A may maintain the vertical bumping state. Also, after the downstream side tip bumps into installation surface or the surface of thetray member 46 in a vertical direction, theroll sheet 3A itself may bend before being cut. Thus, when theroll sheet 3A is cut, theroll sheet 3A itself is likely to stretch. Or the gravity center of theroll sheet 3A discharged from thesheet discharge slot 6A, is on the rear part in the horizontal direction compared with the position of the downstream side tip. Thereby, when theroll sheet 3A is cut, theroll sheet 3A may likely fall over toward the rear direction due to its own weight. - Either in the case that the
bended roll sheet 3A stretches or the roll sheet falls over toward the rear direction due to its own weight, it means that the tip ofroll sheet 3A on the upstream side near thecutter unit 8 is likely to move toward the upstream side in the conveyance direction. At the vicinity of the rear end of the longsize roll sheet 3A, if theroll sheet 3A is fixed on below three spots, the longsize roll sheet 3A may be prevented from falling down to themovable blade 42. These three spots are thetop edge portion 64A of the rollsheet receiving portion 64, thetop edge portion 62D on the downstream side of theregulatory member 62, and thebottom edge portion 61A of the projectingportion 61. As a result, the longsize roll sheet 3A is prevented from being cut twice. - In detail, when the long
size roll sheet 3A is printed in theprinting apparatus 1, the bottom surface of the longsize roll sheet 3A (printing surface side) is supported by thetop edge portion 64A of the rollsheet receiving portion 64 and thetop edge portion 62D on the downstream side of theregulatory member 62, while the top surface (theplaten roller 26 side) is pressed by thebottom edge portion 61A of the projectingportion 61. Thereby, on the two separated spots in the conveyance direction, upward forces are added to theroll sheet 3A from the bottom side, while on the spot between the two separated spots, a downward force is added to rollsheet 3A from the top side. Since theroll sheet 3A is wound around theroll sheet holder 3, it has a curving habit with a predetermined curvature. Furthermore, the curvature of theroll sheet 3A is bigger at the part nearer to the wound core of theroll sheet 3A. - On the other hand, from a center O, when a circular arc which passes the
top edge portion 64A of the rollsheet receiving portion 64 and thetop edge portion 62D on the downstream side of the regulatory member 62 (see chain line inFIG. 12 ) with a maximum radius R of theroll sheet 3A is drawn, thebottom edge portion 61A of the projectingportion 61 is always within the circular arc. In other words, when theroll sheet 3A having a predetermined elasticity which is in a bended state, is pressed from upside and downward in a direction vertical to the conveyance direction, a reactive force to return theroll sheet 3A to an original state is worked thereon. Thereby, theroll sheet 3A may be fixed on three spots, wherein these three spots are thetop edge portion 64A of the rollsheet receiving portion 64, thetop edge portion 62D on the downstream side of theregulatory member 62, and thebottom edge portion 61A of the projectingportion 61. As a result, the longsize roll sheet 3A may be prevented from falling over to themovable blade 42, and also longsize roll sheet 3A may be prevented from being cut twice. - When the
tray member 46 is closed, anedge portion 46B (corner portion) at the top of thetray member 46 locates on the hithermost position of theprinting apparatus 1. Theedge portion 46 B is also on the circumference which starts from a center O with a predetermined radius R, wherein the circumference passes thetop edge portion 64A of the rollsheet receiving portion 64 and thetop edge portion 62D on the downstream side of theregulatory member 62. Thus, even when theedge portion 46 B comes into contact with theroll sheet 3A instead of thetop edge portion 62D, the effect to fix theroll sheet 3A may also be effective. - Adjacent to the
concave portion 46A of thetray member 46 in a closed state, anedge 62E (corner portion, seeFIG. 11 ) is formed on thefront cover 6 at the downstream side of thetop edge portion 62D. When thetray member 46 is opened, theedge 62E locates on the hithermost position of theprinting apparatus 1 except thetray member 46. Theedge portion 62E is also on the circumference which starts from a center O with a predetermined radius R, wherein the circumference passes thetop edge portion 64A of the rollsheet receiving portion 64 and thetop edge portion 62D on the downstream side of theregulatory member 62. Thus, even when theedge portion 62E comes into contact with theroll sheet 3A instead of thetop edge portion 62D, the effect to fix theroll sheet 3A may also be effective. - Thus, in this embodiment, the sheet discharging
path portion 60 includes a projectingportion 61, aregulatory member 62, a rollsheet receiving portion 64, and arib 65. Whenshort roll sheet 3A is discharged from thecutter unit 8 to the sheet dischargingpath portion 60, one surface of theroll sheet 3A comes into contact with therear edge portion 62F of theregulatory member 62 on sheet dischargingpath portion 60 or thetop edge portion 64 of the rollsheet receiving portion 64, while the other surface of theroll sheet 3A comes into contact with the bottom edge of the projectingportion 61. Thus, the discharging path of theroll sheet 3A is regulated. As a result, theroll sheet 3A is prevented from moving to the bottommost end portion of themovable blade 42 together with the adhesive agent. Furthermore, thebottom edge portion 65A of therib 65 constructing the upper part of the sheet dischargingpath portion 60 with the projectingportion 61, is arranged lower than thebottommost edge portion 41A of the fixedblade 41. Thus theroll sheet 3A is regulated between the projectingportion 61 and therib 65, as a result, theroll sheet 3A is prevented from adhering to the adhesive agent on the fixedblade 41. Therefore, the jam of theroll sheet 3A at thecutter unit 8 may be prevented, and the discharging capability of the printing apparatus may be improved dramatically. - When the long
size roll sheet 3A discharged from thecutter unit 8 to the sheet dischargingpath portion 60, one surface of the longsize roll sheet 3A is supported by thetop edge portion 64A of the rollsheet receiving portion 64 and thetop edge portion 62D on the downstream side of theregulatory member 62, while the other surface is pressed by thebottom edge portion 61A of the projectingportion 61. Thereby, theroll sheet 3A is discharged from the sheet dischargingpath portion 60 smoothly, the accumulation of theroll sheet 3A at the sheet dischargingpath portion 60 may be prevented. As a result, the jam due to the accumulation of theroll sheet 3A may be prevented, and the discharging capability of the printing apparatus may be improved dramatically. - Needless to say, the present invention is not restricted to the above-described embodiment but may be improved or modified in various ways within a range not departing from the spirit of the invention.
- For example, the projecting
portions portion 61 may be improved or modified in various ways if the projectingportion 61 is capable to press the roll sheet corresponding to the minimum roll sheet width when short non-specified length roll sheet is made. - The cutting method is not only limited to the guillotine cutter, it may also be applicable in the sliding cutter and the other cutting method.
- This invention may also be applied to the cutting plotter and the other sheet processing apparatuses besides the printing apparatus.
- For the construction of peeling the
roll sheet 3A which adheres to themovable blade 42 by the adhesive agent on themovable blade 42, it is not always limited to the construction in which themovable blade 42 is on the bottom side while the fixedblade 41 is on the top side. In other words, themovable blade 42 may be on the top side and the fixedblade 41 may be on the bottom side. In this case, thebottom edge portion 65A of therib 65 may come into contact with the first part of theshort roll sheet 3A instead of therear edge portion 62F of theregulatory member 62 on sheet dischargingpath portion 60 or thetop edge portion 64A of the rollsheet receiving portion 64, while thehorizontal part 62A on theregulatory member 62 may come into contact with the second part of theshort roll sheet 3A instead of bottom face of the projectingportion 61. - Also, in the same way, for the construction to prevent the
roll sheet 3A cut by thecutter unit 8 from adhering to the fixedblade 41 by the adhesive agent on the fixedblade 41, it is not limited to the construction in which themovable blade 42 is on the bottom side and the fixedblade 41 is on the top side. - Furthermore, in this embodiment, the
regulatory member 62 or the rollsheet receiving portion 64 is constructed individually, theregulatory member 62 and the rollsheet receiving portion 64 may also be integrated. Also the projectingportion 61 or therib 65 is constructed individually in this embodiment, the projectingportion 61 and therib 65 may also be integrated. - While the presently preferred embodiment has been shown and described, it is to be understood that this present invention is for the purpose of illustration and that various changes and modification may be made without departing from the scope of the invention as set forth in the appended claims.
Claims (6)
- A sheet processing apparatus (1) comprising:a main body (2) loaded with a roll sheet (3A);a cutting device (8) for cutting the roll sheet (3A) arranged in the main body (2), the cutting device (8) comprising:a fixed blade (41), anda movable blade (42); anda sheet discharging path portion (60);whereinthe roll sheet (3A) is constructed from an adhesive agent layer (3D) and a peeling paper (3E) which is bonded to the adhesive agent layer (3D),the fixed blade (41) is arranged to make a contact with one side face of the roll sheet (3A) at an entire width in a width direction,the movable blade (42) is arranged capable of being open/close toward the fixed blade (41), for cutting the roll sheet (3A) throughout an entire width in the width direction from other side face of the roll sheet (3A) toward the fixed blade (41),the sheet discharging path portion (60) is arranged on a downstream side of the cutting device (8), and constructs a conveyance path for discharging the roll sheet (3A) cut by the cutting device (8) to an exterior;characterized in that the sheet discharging path portion (60) comprises:wherein the first regulatory member (62, 64) comprises a first contacting portion (62F, 64A) for making contact with the roll sheet (3A) cut by the cutting device (8) adhered to the movable blade (42) by an adhesive agent, at a proximity of the cutting device (8), when the movable blade (42) opens, anda first regulatory member (62, 64) is arranged on a side of the movable blade (42) across the conveyance path for the roll sheet (3A) cut by the cutting device (8), anda second regulatory member (61, 65) is arranged on a side of the fixed blade (41) across the conveyance path for the roll sheet (3A) cut by the cutting device (8),
the second regulatory member (61, 65) comprises a second contacting portion (61A) for making contact with the roll sheet (3A) cut by the cutting device (8) adhered to the movable blade (42) by the adhesive agent, on a downstream side of the first contacting portion (62F, 64A), when the movable blade (42) opens. - The sheet processing apparatus (1) according to claim 1, wherein the second regulatory member (61, 65) further comprises a third contacting portion (65A) for making contact with the roll sheet (3A) cut by the cutting device (8) on a proximity of the cutting device (8), and
the third contacting portion (65A) is arranged on a side which is closer to the movable blade (42) than an edge portion of the fixed blade (41) at a movable blade (42) side in an open/close direction of the movable blade (42). - The sheet processing apparatus (1) according to claim 2, wherein the first regulatory member (62, 64) extends toward a downstream side on a conveyance direction of the roll sheet (3A), and
the first regulatory member (62, 64) comprises a horizontal part (62A) facing the second regulatory member (61, 65), on a downstream side of the third contacting portion (65A) of the second regulatory member (61, 65) in a conveyance direction of the roll sheet (3A). - The sheet processing apparatus according to claims 1 to 3, wherein one of the first regulatory member (62, 64) and the second regulatory member (61, 65) constructs a bottom side of the sheet discharging path portion (60), other of the first regulatory member (62, 64) and the second regulatory member (61, 65) constructs a top side of the sheet discharging path portion (60) .
- The sheet processing apparatus according to claim 4, wherein one of the first regulatory member (62, 64) and the second regulatory member (61, 65) constructing the bottom side of the sheet discharging path portion (60) has a stepwise structure, and
the stepwise structure comprises a sloping part (62B) extending toward an obliquely downward direction along the conveyance direction. - The sheet processing apparatus according to claims 1 to 5, wherein one of the first regulatory member (62, 64) and the second regulatory member (61, 65) constructing the top side of the sheet discharging path portion (60) is constructed from plural ribs with a predetermined space therebetween.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007194882 | 2007-07-26 | ||
JP2008152773A JP5141388B2 (en) | 2007-07-26 | 2008-06-11 | Paper processing device |
Publications (2)
Publication Number | Publication Date |
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EP2025522A1 EP2025522A1 (en) | 2009-02-18 |
EP2025522B1 true EP2025522B1 (en) | 2014-04-16 |
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ID=39760489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP20080013331 Active EP2025522B1 (en) | 2007-07-26 | 2008-07-24 | Sheet processing apparatus |
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EP (1) | EP2025522B1 (en) |
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JP2023069897A (en) * | 2021-11-08 | 2023-05-18 | 東芝テック株式会社 | printer |
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JP3724685B2 (en) | 1998-07-01 | 2005-12-07 | セイコーエプソン株式会社 | Printer with cutter |
US6652173B1 (en) * | 1999-08-24 | 2003-11-25 | Spielo Manufacturing Incorporated | Ticket dispensing mechanism |
JP4192083B2 (en) * | 2003-12-12 | 2008-12-03 | スター精密株式会社 | Printer |
JP4543900B2 (en) | 2004-01-27 | 2010-09-15 | ブラザー工業株式会社 | Label printer |
JP4086869B2 (en) | 2005-09-14 | 2008-05-14 | Necインフロンティア株式会社 | Printer, discharge mechanism, and paper jam prevention method |
JP4840039B2 (en) | 2006-09-15 | 2011-12-21 | ブラザー工業株式会社 | Tape printer |
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