JP3867779B2 - Cutter device and recording apparatus provided with the cutter device - Google Patents

Cutter device and recording apparatus provided with the cutter device Download PDF

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Publication number
JP3867779B2
JP3867779B2 JP2002062153A JP2002062153A JP3867779B2 JP 3867779 B2 JP3867779 B2 JP 3867779B2 JP 2002062153 A JP2002062153 A JP 2002062153A JP 2002062153 A JP2002062153 A JP 2002062153A JP 3867779 B2 JP3867779 B2 JP 3867779B2
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Japan
Prior art keywords
cutter
recording material
roller
paper
side
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Expired - Fee Related
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JP2002062153A
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Japanese (ja)
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JP2003260830A (en
Inventor
聡 金田
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セイコーエプソン株式会社
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Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cutter device that cuts a recording material at a predetermined position and a recording device including the cutter device.
[0002]
[Prior art]
Hereinafter, an ink jet printer (hereinafter referred to as “printer”) as one of the recording apparatuses will be described as an example. Some printers can print on roll paper, and some have a cutter device that cuts the roll paper at a predetermined position downstream of the paper discharge roller. Here, FIG. 11 is an overall perspective view of the cutter device 500 according to the related art, and FIG. 12 is a side view of the cutter device 500 (viewed in the direction of arrow z in FIG. 11). In FIG. 11 and FIG. d Is the one on the downstream side of the cut roll paper. u Indicates the upstream side, and the arrow in FIG. d The paper discharge direction is shown.
[0003]
11 and 12, the cutter device 500 includes a shear plate 504 that is flat in the width direction of the roll paper, and a shear plate 504 that is in contact with the downstream end of the shear plate 504 and moves in the width direction of the roll paper. A rotary blade (cutter blade) 507 for shearing the roll paper from below is provided, and the rotary blade 507 is pivotally supported by a cutter carriage 503 that reciprocates in the width direction of the roll paper. The roll paper conveyed from the upstream side is guided by the paper guide 508 and enters the cutter device 500, and the upstream side of the rotary blade 507 is clamped by the shear plate 504 and the clamping member 506, and the downstream side is driven. It is held by being pinched by the roller 502 and the driven roller 505, and in this held state, the rotary blade 507 is cut by moving in the width direction of the roll paper. In addition, the roll paper P that has been cut into a cut sheet state d Is discharged downstream by the rotation of the driving roller 502.
[0004]
Here, the cut roll paper P d And roll paper P u 12, the vicinity of the rotary blade 507 hangs down as shown in FIG. 12 due to an increase in its own weight due to the curl or absorption of ink droplets. On the other hand, the cutter carriage 503 has a standby position on the 0-digit side (lower right direction in FIG. 11), and moves from the 0-digit side to the 80-digit side (upper left direction in FIG. 11) when cutting to roll paper. Cut and return to the standby position again. Accordingly, as shown in FIGS. 12A and 12B, the roll paper P d And roll paper P u When the vicinity of the rotary blade 507 hangs down, it collides with the cutter carriage 503 returning to the standby position, and the collided portion may be bent, and the cutter carriage 503 is rolled paper P. d There is also a possibility of moving in the roll paper width direction while being in contact with the printing surface, and damaging the printing surface. Therefore, conventionally, in order to solve such a problem, the cutter carriage 503 returns to the standby position (roll paper P). d And P u In this example, inclined surfaces 503a and 503b are formed on the portion that collides with the cutter carriage 503, and the corners of the roll paper hung down by the inclined surfaces 503a and 503b are scooped upward.
[0005]
[Problems to be solved by the invention]
However, even if the inclined surfaces 503a and 503b are formed as described above, there is a difference in the degree of sag due to various factors such as the quality of the roll paper, the degree of curling, and the wetness caused by the ejection of ink droplets. In particular, downstream roll paper P d Is held in a state of being pressed by a pair of rollers (driving roller 502 and driven roller 505), the vicinity of the rotary blade 507 is likely to sag, and the difference in the degree of sag is large. Therefore, as shown in FIG. 12 (B), when the degree of drooping becomes significant as compared with FIG. 12 (A), the corner of the roll paper cannot be properly scooped up by the inclined surface 503a. In some cases, the paper was bent or the printed surface was damaged.
[0006]
Therefore, the present invention has been made in view of such a problem, and its problem is to avoid the problem of the cutter carriage colliding with the end of the cut roll paper when the cutter carriage returns to the standby position. Is to obtain a good print result.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, a cutter device according to claim 1 of the present application is a shear plate that is flat in the width direction of the recording material and an end portion of the shear plate that moves in the width direction of the recording material. A cutter blade for shearing the recording material from below with the shear plate, and holding the cutter blade, and supporting a portion near the cutter blade of the recording material cut by the cutter blade from below. A cutter carriage provided with a support surface so as to be capable of reciprocating in the width direction of the recording material; and a recording material holding means for holding the recording material by pressing between the upstream side and the downstream side of the cutter blade; A cutter device for performing a cutting operation of the recording material by reciprocating the cutter carriage in the width direction of the recording material, wherein the cutter carriage waits near one recording material side end. Position In addition, when the reciprocating operation is performed, the portion near the other recording material side end is folded so that the portion near the cutter blade of the cut recording material is maintained in the state supported by the support surface. It is characterized by.
[0008]
According to the first aspect of the present invention, the cutter carriage has a supporting surface for supporting a portion near the cutter blade (hereinafter referred to as “cut end”) of the recording material cut by the cutter blade from below. And the cutter device moves the cutter carriage from the standby position to the vicinity of the recording material side end in the cutting operation of the recording material, cuts the recording material, and then folds the recording material near the side end. Since the carriage is returned to the standby position, the cut end is not detached from the support surface, and the state where the cut end is supported by the support surface is maintained. Therefore, when the cutter carriage returns to the standby position, the cutter carriage does not collide with the hanging cut end, and an appropriate recording result can be obtained by reliably protecting the cut end. It becomes possible.
[0009]
Further, the standby position of the cutter carriage is in the vicinity of one end of the recording material, and the reciprocating operation at the time of cutting is folded back in the vicinity of the end of the other recording material. It is performed only in the range of the side edge position. That is, the cutter carriage does not perform an unnecessary movement operation and reciprocates only within a necessary range, so that the time for the cutting operation can be shortened and the life of the cutter blade can be extended.
[0010]
Note that the information on the position of the recording material side end that is the folding position of the cutter carriage, that is, the information on the width dimension of the recording material, is attached to the recording apparatus that records on the recording material. Can be obtained from the recording device, or can be obtained by providing a dedicated side end position detecting means in the cutter device.
[0011]
The cutter device according to claim 2 of the present application is characterized in that, in claim 1, the cutter device further comprises a side end position detecting means for detecting a recording material side end position far from the standby position.
According to the second aspect of the present invention, the recording material side end position far from the standby position of the cutter carriage, in other words, the side end position detecting means for detecting the width dimension of the recording material is provided. As a result, the side edge position of the recording material can be accurately detected, and the operation and effect of the first aspect of the present invention can be reliably obtained.
[0012]
The cutter device according to claim 3 of the present invention is the cutter device according to claim 1 or 2, wherein the recording material holding means is provided on a downstream side of the cutter blade and a clamping member for clamping the recording material between the shear plate and the cutter blade. And a pinching roller for pinching the recording material.
[0013]
According to the third aspect of the present invention, the recording material holding means for holding the recording material with the cutter blade interposed therebetween includes a pressing member for pressing the recording material between the shear plate and the cutter blade. Since it is provided with a pressure roller that is provided on the downstream side and clamps the recording material, the downstream portion of the cut recording material can be reliably discharged by driving the pressure roller. .
[0014]
A cutter device according to a fourth aspect of the present invention is the cutter device according to any one of the first to third aspects, wherein the portion near the cutter blade of the recording material cut on one side or both sides of the support surface in the reciprocating direction of the cutter carriage. It is provided with the inclined surface which scoops up.
[0015]
According to the fourth aspect of the present invention, since the support surface is provided with an inclined surface that scoops up the cut end on one side or both sides of the support carriage in the reciprocating direction of the cutter carriage, even if the cut end is drooped to some extent, the inclined surface Can be scooped up, and the cut end can be more reliably protected.
[0016]
The cutter device according to claim 5 is a cutter blade that shears a recording material from below between a shear plate flat in the width direction of the recording material and the shear plate while moving in the width direction of the recording material. A cutter carriage that is reciprocally movable in the width direction of the recording material and that holds the cutter blade, and a recording material holding device that holds the recording material by pressing between the upstream side and the downstream side of the cutter blade A cutter device that performs a cutting operation of the recording material by reciprocating the cutter carriage in the width direction of the recording material, wherein the recording material holding means is between the shear plate A clamping member that clamps the recording material and a clamping roller that is provided on the downstream side of the cutter blade and clamps the recording material. Pressure roller By driving rotation, characterized in that it is configured so as to paper feed the downstream portion to the downstream side from the cutter blade of the recording material which has been cut.
[0017]
When the downstream portion of the recording material from the cutter blade is held by the pinching roller, the cut end portion on the downstream side is likely to hang down, and the risk of collision with the cutter carriage becomes higher. Therefore, the invention according to claim 5 is configured to feed the downstream cut end to the downstream side by rotationally driving the pinching roller when the cutter carriage is turned back in the reciprocating operation. Therefore, when the cutter carriage is folded back and forth in the reciprocating operation, the cut end is separated from the cutter carriage, and therefore, it is possible to prevent the cutter carriage from colliding with the cut end and reliably protect the cut end. Become.
[0018]
A cutter device according to a sixth aspect of the present invention is the cutter device according to the fifth aspect, wherein the pinching member includes a roller body that is rotationally driven, and the roller body is rotationally driven when the cutter carriage is folded back in the reciprocating operation. By doing so, it is configured to feed the upstream portion of the cut recording material from the cutter blade to the upstream side.
[0019]
According to the invention of claim 6 of the present application, the clamping member that clamps the recording material with the shear plate on the upstream side of the cutter blade is composed of a roller body that is rotationally driven, and the cutter carriage reciprocates. At the time of turning back, the roller body is rotated to feed the upstream cut end to the upstream side, so that not only the downstream cut end but also the upstream cut end from the cutter carriage. Thus, it is possible to reliably protect the cut end portion by preventing the cutter carriage from colliding with the cut end portion.
[0020]
A recording apparatus according to a seventh aspect of the present invention is a recording apparatus including a recording unit that performs recording on a recording material, wherein the cutter device according to any one of claims 1 to 6 is disposed downstream of the recording unit. It is prepared for.
[0021]
According to the seventh aspect of the present invention, the recording apparatus for recording on the recording material includes the cutter device according to any one of the first to sixth aspects. The same effects as those of the invention described in any one of Items 1 to 6 can be obtained, and therefore the recording quality is not deteriorated even when the recording material is cut.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
<Inkjet printer configuration>
First, the configuration of an ink jet printer (hereinafter abbreviated as “printer”) 1 according to an embodiment of the present invention will be outlined with reference to FIGS. 1 to 3. 1A and 1B are external perspective views of the printer 1, FIG. 2 is a schematic side sectional view of the printer 1, and FIG. 3 is a block diagram showing a control system of the printer 1. In the following, the rear side (left side in FIG. 2) of the printer 1 is referred to as the upstream side (upstream side of the paper transport path) and the front side (right side in FIG. 2) of the printer 1 is downstream (paper) as necessary. It will be referred to as the downstream side of the transport path).
[0023]
In FIG. 1A, a printer 1 feeds printing paper from the rear side of the apparatus (upper left of FIG. 1), and roll paper or single printed from the paper discharge port 1b on the front side of the apparatus (lower right of FIG. 1). It is configured to eject slips. As shown in FIG. 1B, an auto cutter 2 as a “cutter device”, which will be described later in detail, can be detachably attached to the paper discharge port 1b by a snap fit means (not shown). By attaching the, the roll paper can be cut at a predetermined position. When the auto cutter 2 is attached, the printed roll paper or cut paper is discharged from the paper discharge port 2b of the auto cutter 2. Hereinafter, recording materials that can be printed by the printer 1, such as roll paper and cut paper, are collectively referred to as “printing paper”.
[0024]
Hereinafter, components on the paper conveyance path of the printer 1 will be described with reference to FIG. First, the sheet feeding device 5 includes a hopper 9 made of a plate-like body provided in an inclined posture. The hopper 9 is provided so as to be able to oscillate around a oscillating fulcrum 9a provided in the upper part (clockwise and counterclockwise in FIG. 2), and is oscillated by a cam mechanism (not shown) so that the lower part is a paper feed roller. The uppermost one of the cut sheets P stacked on the hopper 9 is fed to the downstream side with the rotation of the paper feed roller 13. The The paper feed roller 13 has a substantially D shape when viewed from the side, and is rotationally driven by a roller drive motor 36 (see FIGS. 3 and 7). The sheet paper P pressed against the sheet 13 is fed without slipping. Further, when the printing paper is precisely fed (sub-scanning feeding) by the conveyance roller 19 provided on the downstream side, the flat surface faces the cut sheet P as shown in the figure so that no conveyance load (back tension) is generated. The drive is controlled in the same way. Note that a roll paper holder (not shown) is detachably attached to the rear portion of the paper feeding device 5, and roll paper is fed from the roll paper holder and fed below the recording head 21 through the lower side of the paper feeding device 5. It is configured so that it can be sent.
[0025]
Next, a conveyance roller 19 for precisely feeding the printing paper is provided downstream of the paper supply roller 13. The transport roller 19 includes a transport drive roller 15 that is rotationally driven by a roller drive motor 36 (see FIGS. 3 and 6) described later, and a transport driven roller 17 that is driven to rotate while being in pressure contact with the transport drive roller 15. It is configured. The transport drive roller 15 is composed of a long shaft in the main scanning direction (the front and back direction in FIG. 2), and a high friction layer (FIG. 2) in which wear-resistant particles (for example, ceramic particles) are fixed to the outer peripheral surface by an adhesive. It is possible to perform a precise precision feeding operation without causing a slip between the back surface of the printing paper (the surface opposite to the printing surface). On the other hand, a plurality of transport driven rollers 17 are arranged in the axial direction of the transport drive roller 15, and similarly downstream of the transport driven roller holder 18 disposed in the axial direction of the transport drive roller 15 (right side in FIG. 2). ) It is pivotally supported at the end so as to be freely rotatable. In the present embodiment, two transport driven rollers 17 are pivotally supported by one transport driven roller holder 18.
[0026]
The transport driven roller holder 18 is provided so as to be rotatable in the clockwise and counterclockwise directions of FIG. 2 around the rotation fulcrum 18a, and the transport driven roller 17 is pressed against the transport drive roller 15 by an urging means (not shown). It is urged to rotate in the direction (clockwise in FIG. 2). Further, the conveyance driven roller holder 18 can be rotated in a direction (counterclockwise in FIG. 2) in which the conveyance driven roller 17 is separated from the conveyance driving roller 15 by rotation of a cam (not shown). .
[0027]
Next, among the plurality of transport driven roller holders 18 arranged in the axial direction of the transport drive roller 15, the one positioned closest to the 0 digit (right side when the printer 1 is viewed from the front: the back side of the paper in FIG. 2) A slot is provided, and a paper detection lever 14 is provided so as to pass through the slot and protrude downward from above. The paper detection lever 14 is swingable with the upper part being a swing center. When the leading edge of the printing paper fed from the upstream side passes, the paper detection lever 14 is pushed upward, and the trailing edge of the printing paper (cut sheet paper) When it passes, it returns to the bottom. The swinging motion of the paper detection lever 14 can be detected by the paper detector 11 (see FIG. 3), and the paper detector 11 sends a detection signal to the control unit 8 (see FIG. 3) of the printer 1. Thus, the passage of the leading edge of the printing paper and the size (length) of the printing paper (single paper) can be detected.
[0028]
Next, an inkjet recording head (hereinafter referred to as “recording head”) 21 and a platen 25 are provided downstream of the conveying roller 19 so as to face the recording head 21. The recording head 21 is provided below the carriage 23, is supplied with ink from an ink cartridge 24 mounted on the carriage 23, and ejects ink droplets onto the printing surface of the conveyed printing paper. The carriage 23 is guided by a main carriage guide shaft 22a and a sub-carriage guide shaft 22b that are suspended between side frames (not shown) that are provided on the left and right sides of the apparatus 1 and constitute the base of the printer 1. It is configured to reciprocate in the main scanning direction (the front and back direction in FIG. 2) under the driving force of the motor 35 (see FIG. 3).
[0029]
Next, on the downstream side of the recording head 21, there are provided a paper discharge roller comprising two pairs of rollers, a first paper discharge roller 26 and a second paper discharge roller 27 provided downstream of the first paper discharge roller 26. It has been. The first paper discharge roller 26 and the second paper discharge roller 27 are respectively a first paper discharge drive roller 28 and a second paper discharge drive roller 29 that are rotationally driven by a roller drive motor 36 (see FIGS. 3 and 6). The first paper discharge driven roller 30 and the second paper discharge driven roller 31 are driven to rotate by elastic contact with these rotationally driven rollers. The printing paper is discharged to the downstream side by pressing and driving the respective driving rollers. Here, the first paper discharge driven roller 30 is a pointed roller having teeth on the outer periphery that makes point contact with the printing surface, and the second paper discharge driven roller 31 is in surface contact with the printing surface and has an outer peripheral surface. It is comprised by the rubber roller to which the ink repellent process was given. The first paper discharge driven roller 30 and the second paper discharge driven roller 31 are both pivotally supported so as to be freely rotatable under a paper discharge frame 33 made of a plate-like body that is long in the width direction of the printing paper. .
[0030]
Here, two pairs of rollers, that is, the first paper discharge roller 26 and the second paper discharge roller 27 are used as the paper discharge rollers for the following reason. That is, the printing paper is precisely fed by the conveyance roller 19 at the time of printing. However, when printing is performed without a margin at the trailing edge of the printing paper (single sheet paper), the conveyance is performed when the trailing edge of the printing paper comes off the conveyance roller 19. It is necessary to perform a precision feeding operation of the printing paper by a roller provided downstream from the roller 19. However, the roller pair provided downstream of the recording head 21 cannot strongly nip the printing paper wet with ink droplets in order to prevent the problem of ink droplet transfer and white leakage, resulting in high paper feeding. The accuracy cannot be obtained. Therefore, by providing two pairs of rollers as in this embodiment, the conveyance force of the printing paper can be increased, and a high paper feeding accuracy can be obtained even after the trailing edge of the printing paper has come off the conveyance roller 19. It is composed.
[0031]
The above is the components constituting the paper transport path of the printer 1, and the control system of the printer 1 will be outlined below with reference to FIG. The printer 1 includes a control unit 8 including a CPU, a ROM, a RAM, an interface for connection with an external computer, and the like (not shown). The control unit 8 receives the detection signal from the paper detector 11 and the detection signal from the cutter detector 12 that detects that the auto cutter 2 described later is mounted on the printer 1. To select and execute the optimal control program. The control unit 8 also includes a carriage motor 35 that drives the carriage 23, a paper feed roller 13, a conveyance drive roller 15, a first paper discharge drive roller 28, a second paper discharge drive roller 29, and a cutter paper discharge drive roller 56 described later. The roller drive motor 36, which is a common drive source, is controlled as a control object. Thus, according to various control programs stored in the ROM of the control unit 8, the paper feed roller 13, the transport drive roller 15, the first discharge roller The drive timing, rotation speed, rotation amount, and the like of the paper drive roller 28, the second paper discharge drive roller 29, and the cutter drive roller 56 are controlled.
The above is the configuration of the printer 1.
[0032]
<Configuration of auto cutter>
Next, the configuration of the auto cutter 2 will be described in detail with reference to FIGS. 4 is a side sectional view of the auto cutter 2, FIG. 5 is an external perspective view of the cutter carriage 53, and FIGS. 6A to 6D are explanatory views showing a moving range of the cutter carriage 53. FIG. 7 is a front view showing a gear train of a gear mechanism that transmits the rotational force of the roller drive motor 36 from the printer 1 to the auto cutter 2. FIG. 8 is an external view showing the attachment structure of the cutter discharge driven roller holder 58. FIG. 9 is a side sectional view of the cutter discharge driven roller holder 58 and its vicinity, and FIG. 10 is a front view of the auto cutter 2.
[0033]
First, the configuration of the auto cutter 2 will be outlined with reference to FIG. The auto cutter 2 includes a cutter paper guide 51 that guides the printing paper fed by the second paper discharge roller 27 to the inside of the cutter device. The printing paper that enters the cutter device has a shear plate 52 that is long in the paper width direction. The cutter discharge driving roller 56 and the cutter discharge driven roller 57 are reached. The printing paper is nipped by these rollers, and the cutter paper discharge drive roller 56 is driven to rotate, whereby the print paper is discharged downstream from the auto cutter 2. On the other hand, a rotary blade 55 is provided between the cutter paper guide 51 and the cutter paper discharge driving roller 56, and the rotary blade 55 moves in the paper width direction in a state where the paper discharge operation of the print paper is stopped. The paper is cut at a predetermined position.
[0034]
Hereinafter, it will be described in detail with reference to FIG. 4 and FIG. As shown in FIG. 5, the rotary blade 55 having a disk shape is pivotally supported by the cutter carriage 53 via a rotation shaft 55a parallel to the paper transport direction so as to be freely rotatable, and The outer peripheral portion on the disk surface is provided so as to be in pressure contact with the downstream end portion 52 a of the shear plate 52.
[0035]
On the other hand, the shear plate 52 which is long in the sheet width direction and is bent in the upstream side of the plate-like body parallel to the horizontal plane as shown in FIG. A carriage guide frame 60 that is long in the paper width direction is provided above the shear plate 52. The carriage guide frame 60 has a U-shape that opens downward as viewed from the side of the sheet conveyance path, and a portion bent downward on the upstream side is bent upward on the upstream side of the shear plate 52. It is attached by joining to the part. The cutter carriage 53 is shaped so as to slidably contact the upper surface of the shear plate 52 and sandwich a bent portion 60a bent downward on the downstream side of the carriage guide frame 60. While being guided by 60, it can reciprocate without being shaken straight in the paper width direction.
[0036]
Here, one end of an endless belt (not shown) is fixed to the cutter carriage 53, and a cutter carriage motor 54 (see FIG. 3) that drives the endless belt is driven to rotate, whereby the width direction of the printing paper is increased. Driven by. At this time, the rotary blade 55 rotates while elastically contacting the end portion 52 a of the shear plate 52, and shears (cuts) the printing paper from below with the shear plate 52. In this embodiment, the rotary blade 55 has a standby position on the 0-digit side (right side in FIG. 5), moves from the standby position to the 80-digit side (leftward in FIG. 5), and again stands by. The printing paper is cut by performing a reciprocating operation to return to the above, which will be described in detail later.
[0037]
Next, the printing paper is cut by the rotary blade 55 and the shear plate 52 in a state where the upstream side and the downstream side of the rotary blade 55 are held by the “printing paper holding unit”. That is, as shown in FIG. 4, on the upstream side of the rotary blade 55, the pressing member 63 is pressed against the lower surface of the shear plate 52 by a driving means (not shown), and is separated from the lower surface of the shear plate 52. It is movably provided at a separation position that does not interfere with the paper discharge operation and is displaced upstream from the rotary blade 55 of the printing paper (reference P 1 Is held between the shear plates 52. On the other hand, as described above, the cutter paper discharge driving roller 56 and the cutter paper discharge driven roller 57 that is in pressure contact therewith are provided on the downstream side of the rotary blade 55, and the downstream side (reference P) 2 Is held by these rollers. Then, the printing paper is cut straight without the meandering of the cutting line by moving the rotary blade 55 in the paper width direction while being held firmly without being moved by these clamping holding means.
[0038]
Next, the cutter carriage 53 has a portion near the rotary blade 53 of the cut printing paper, that is, the printing paper P upstream from the rotary blade 55 in FIG. 1 Downstream end portion of the printing paper P downstream of the rotary blade 55 2 An inclined surface is formed for scooping up the upstream end. In FIG. 5, the cutter carriage 53 cuts the printing paper by moving from the 0 digit side (right side in FIG. 5) to the 80 digit side (left side in FIG. 5). Inclined surfaces 53e and 53b that are inclined upward toward the zero digit side are formed. Therefore, the cut printing paper P 1 The downstream end of the sheet is scooped upward by the inclined surface 53e, and the printing paper P 2 The upstream end of the sheet is scooped upward by the inclined surface 53b, so that the cutter carriage 53 can smoothly advance in the sheet width direction without colliding with the vicinity of the rotary blade 55 of the cut printing sheet. Yes. In FIG. 5, reference numeral 53c denotes a paper support portion formed so as to protrude upward from the inclined surface 53b. The top of the paper support portion 53c supports the printing paper from the bottom near the rotary blade 55, By preventing the printing paper from leaving the lower surface of the shear plate 52, the printing paper is cut straight without meandering.
[0039]
Subsequently, a support surface 53a is formed on the downstream side of the rotary blade 55 in the cutter carriage 53 so as to be inclined upward toward the upstream side following the inclined surface 53b. The support surface 53a is the cut printing paper P 2 It fulfills the function of a support surface that supports the upstream side end portion from below. Hereinafter, this function will be described in detail with reference to FIG. In FIG. 6, the cutter carriage 53 is X 1 Point and X 2 It is possible to reciprocate between points and X 1 The point indicates the standby position of the cutter carriage 53 set in the vicinity of the side edge on the 0 digit side of the printing paper P. Reference symbol P denotes an uncut printing paper, reference symbol P 1 Is the upstream side of the cut printing paper from the rotary blade 55 (the end near the cutter blade 55). 2 Indicates the downstream side (end near the cutter blade 55). Then, when the printing paper P is cut, the cutter carriage 53 moves from the 0th digit side (right side in FIG. 6) toward the 80th digit side (left side in FIG. 6), and again the standby position X 1 The drive control is performed by the control unit 8 (see FIG. 3) so as to return to FIG.
[0040]
As shown in FIG. 6A, the cutter carriage 53 is in the standby position X. 1 Starting from Fig. 6 (b), the downstream printing paper P 2 The cutter carriage 53 advances toward the 80-digit side in a state where the cut end portion is supported from below by the support surface 53a. Here, in the auto cutter 2 according to the present embodiment, the cutter carriage 53 is the maximum movable position X. 2 Without proceeding to the point, as shown in FIG. 6C, in the vicinity of the side edge of the printing paper P (the standby position X on the printing paper P). 1 Folding at the side end near the far side) and again the standby position X 1 It is configured to be driven and controlled by the control unit 8 (see FIG. 3) so as to return.
[0041]
Therefore, as shown in FIGS. 6C and 6D, the printing paper P 2 The cut end of the printing paper P does not fall off the cutter carriage 53 (support surface 53a) and does not hang down. 2 The state in which the cut end portion is supported by the support surface 53a is maintained.
[0042]
That is, the cutter carriage 53 is shown in FIG. 2 If it moves to the point, the printing paper P 2 When the cut end of the cutter is detached from the support surface 53a and hangs down, the cutter carriage 53 is moved to the standby position X. 1 When trying to return, the cutter carriage 53 collides with the hanging part. Here, even if an inclined surface that scoops the suspended portion upward is formed at the collision portion, the printing paper P 2 Paper quality, printing paper P 2 When the paper is a roll paper, there are differences in the degree of sag depending on various factors such as the degree of curling, the wetness caused by the ejection of ink droplets, etc. Result in printing paper P 2 May be bent, or the cutter carriage 53 may be rubbed against the printing surface, resulting in a decrease in print quality. However, as described above, the printing paper P is used in the auto cutter 2. 2 Since the state in which the cut end portion is supported by the support surface 53a is maintained, such a problem does not occur.
[0043]
Further, since the cutter carriage 53 reciprocates within the range of both sides of the printing paper P, that is, within the minimum necessary range, the cutting time can be shortened and the life of the rotary blade 55 can be extended. It becomes possible. The printing paper P upstream from the rotary blade 55 1 Similarly to the above, the downstream side end portion is maintained supported by the inclined surface 53e (see FIG. 5), thereby preventing the occurrence of the above-described problems. .
[0044]
Incidentally, the point where the cutter carriage 53 is folded, that is, the standby position X of the printing paper P 1 Information related to the side edge position far from the printer is transmitted to the printer 1 (control unit 8) together with print data by a host computer (not shown). That is, since the print data transmitted from the host computer to the printer 1 includes information related to the size of the normal print paper P, the control unit 8 (see FIG. 3) uses this information and the cutter carriage motor 54 ( The rotation amount of the cutter carriage 53 is determined by controlling the rotation amount of the cutter carriage 53 (see FIG. 3). For example, the cutter carriage 53 is provided with sensor means (side edge position detecting means) for detecting the side edge of the printing paper P, whereby the standby position X of the printing paper P is provided. 1 If the configuration is such that the information related to the side end position on the side far from the center is obtained, it becomes possible to drive and control the cutter carriage 53 more reliably.
[0045]
By the way, the printing paper P of the cutter carriage 53 is controlled by performing the following control. 1 And printing paper P 2 It is also possible to prevent a collision with the cut end. In FIG. 4, a rotatable roller body is employed as the pinching member 63. In FIG. 6, the cutter carriage 53 is, for example, X 2 The cutting operation is performed by moving to the point, and the cutter carriage 53 is moved to the standby position X. 1 Before returning to the printing paper P, the roller body as the pinching member 63 in FIG. 1 Is slightly upstream. At the same time, the cutter paper discharge drive roller 56 is driven to rotate, thereby printing paper P. 2 Is sent slightly downstream.
[0046]
Then, the printing paper P is moved from the reciprocating area of the cutter carriage 53. 1 And P 2 The cut edge of the paper is retracted and the printing paper P 1 And printing paper P 2 Even if the cut end of the cutter hangs down, the cutter carriage 53 remains in the standby position X 1 When returning to step (b), it does not collide with the hung part, so that this also makes it possible to avoid problems such as bending of the cut end as described above.
[0047]
Next, roller release means for separating the cutter discharge driven roller 57 from the cutter discharge driving roller 56 will be described in detail with reference to FIGS. FIG. 7 shows a tooth wheel train for transmitting the rotational force from the roller drive motor 36 to the cutter discharge drive roller 56. Four gears indicated by reference numerals 70 to 73 are provided on the auto cutter 2 side, and the cutter side gear is provided. The device 74 is configured, and all other gears are provided on the printer 1 side to configure the printer-side gear device 43.
[0048]
In FIG. 6, the cutter discharge driving roller gear 70 is attached to the shaft end of the rotation shaft 56 a of the cutter discharge driving roller 56 on the auto cutter 2 side. On the other hand, on the printer 1 side, a transport driving roller gear 38 is attached to the shaft end of the transport driving roller 15, and a second paper discharge driving roller is connected to the shaft end of the rotation shaft 29 a of the second paper discharge driving roller 29. A gear 40 is attached.
[0049]
The cutter-side transmission gear 73 constituting the cutter-side gear device 74 meshes with the printer-side transmission gear 41 constituting the printer-side gear device 43 when the auto cutter 2 is attached to the printer 1 body (see FIG. 1). . In the printer-side gear unit 43, a second discharge shaft is connected from a pinion gear 37 attached to the rotation shaft 36a of the roller drive motor 36 via a transport drive roller gear 38, an intermediate gear 39, and a second discharge drive roller gear 40. The rotational force is transmitted to the printer-side transmission gear 41 constituting the two-stage gear by the paper drive roller gear 40. When the auto-cutter 2 is attached to the printer 1 and the printer-side transmission gear 41 and the cutter-side transmission gear 73 are engaged with each other, the rotational force is transmitted to the cutter discharge driving roller gear 70 via the intermediate gears 72 and 71. As a result, the cutter discharge driving roller 56 rotates.
[0050]
On the other hand, on the printer 1 side, the conveyance drive roller gear 38 is directly driven to rotate by the pinion gear 37, and the second paper discharge drive roller gear 40 rotates via the conveyance drive roller gear 38 and the intermediate gear 39. It is driven dynamically. The rotational force of the roller drive motor 36 is transmitted to the first paper discharge drive roller 28 via an intermediate gear (not shown) and the first paper discharge drive roller gear 42.
[0051]
By the way, in FIG. 2, when printing is performed without a margin at the rear end of the printing paper (cut sheet paper), the printing paper is located downstream from the first paper discharge roller 26 when the rear end of the printing paper comes off the conveyance roller 19. It is precisely fed by the roller. Here, since the first paper discharge driven roller 30 constituting the first paper discharge roller 26 is a toothed roller that makes point contact with the printing surface, the second paper discharge roller 27, the cutter paper discharge drive roller 56, and the cutter Compared to the two roller pairs with the paper discharge driven roller 57, the conveyance force of the printing paper is low. Accordingly, the paper feeding accuracy after the trailing edge of the printing paper is separated from the conveying roller 19 is the rotational accuracy of the two pairs of rollers, the second paper discharge roller 27, the cutter paper discharge driving roller 56, and the cutter paper discharge driven roller 57. Will be determined by.
[0052]
Here, as described with reference to FIG. 6, the rotational force of the roller drive motor 36 is transmitted to the cutter discharge drive roller 56 through a larger number of gears than the second discharge drive roller 29. Therefore, the rotational accuracy of the cutter paper discharge drive roller 56 is inferior to that of the second paper discharge drive roller 29. In particular, since the auto cutter 2 is detachably attached to the printer 1, the meshing state of the cutter side transmission gear 73 and the printer side transmission gear 41 varies depending on the mounting state, and in some cases, the rotation is caused by an increase in the backlash amount. There is also a possibility that the accuracy is extremely lowered.
[0053]
When the roller pair including the cutter discharge driving roller 56 and the cutter discharge driven roller 57 with low rotation accuracy contributes to the conveyance operation of the printing paper after the trailing edge of the printing paper is separated from the conveyance roller 19 as described above. There is a concern that the print quality may be lowered due to a decrease in paper feed accuracy. Therefore, in the auto cutter 2 according to the present embodiment, when the printing paper is fed for printing, the cutter paper discharge driven roller 57 is set to the cutter paper discharge driving roller by the roller release means in order to prevent such a problem. It is configured to be separated from 56.
[0054]
Hereinafter, the roller release means will be described in detail with reference to FIGS. As shown in FIG. 9, the cutter discharge driven roller 57 is pivotally supported by a cutter discharge driven roller holder (hereinafter referred to as “roller holder”) 58 so as to be freely rotatable. The roller holder 58 has a rotating shaft 58d parallel to the paper width direction and a bearing portion 62a (see FIG. 8) provided on the upstream side of the holder 62 (see FIG. 8) having a shape surrounding the roller holder 58. 8), the rotating shaft 58 is pivotally supported. As a result, the roller holder 58 swings so that the cutter discharge driven roller 57 having the rotation shaft 57a on the downstream side of the rotation shaft 58d moves away from and approaches the cutter discharge driving roller 56. It can be done. The holder 62 is provided on the upper surface of the roller frame 61 having an L shape in a side view.
[0055]
Subsequently, the roller holder 58 has a column portion 58a protruding upward, and a spring latching portion 58b is formed at the upper end portion of the column portion 58a. On the other hand, on the downstream side of the holder 62, spring latching portions 62b projecting upward are formed, and a compression coil spring 59 is suspended on these spring latching portions. Accordingly, the roller holder 58 is in a state in which the cutter discharge driven roller 57 is urged to rotate in a direction in which the cutter discharge driven roller 57 is pressed against the cutter discharge driving roller 56.
[0056]
Next, as shown in FIGS. 8 and 10, a cam member 65 extending in the paper width direction (left and right direction in FIG. 10) is formed above the roller holder 58 so as to be slidable in the paper width direction and formed in the printer 1 body. The compression coil spring 67 is hung on the spring latching portion 68 and the spring latching portion 65b formed on the cam member 65, and is biased toward the 80 digit side (left side in FIG. 10). Is provided. The cam member 65 has an L-shape when viewed from the front, and a plurality of cam portions 66 with the L-shaped projecting ends extending toward the support column 58a of the roller holder 58 are disposed in the paper width direction. The roller holder 58 is formed slightly above the 80 digit side (left side in FIG. 10).
[0057]
Further, an engagement portion 65a that protrudes toward the downstream side (backward direction in FIG. 10) is formed on the most 0 digit side (right end in FIG. 10) of the cam member 65, while the cutter carriage 53 includes As shown in FIG. 5, the engaging portion 53 d that can engage with the engaging portion 65 a is formed so as to be bent upwards after extending upward from the cutter carriage 53. Then, the cutter carriage 53 is closest to the 0 digit side (the standby position X shown in FIG. 1 ), The engaging portion 53d formed on the cutter carriage 53 comes into contact with the engaging portion 65a of the cam member 65, and the cam member 65 is biased by the compression coil spring 67 as shown in FIG. Slide to the 0 digit side against
[0058]
Here, as shown in FIG. 8, the cam portion 66 has an inclined surface 66a on the desired side of the column portion 58a, and when the cam portion 66 (cam member 65) moves to the 0 digit side, the inclined surface 66a When the cam portion 66 contacts the cam follower portion 58c of the column portion 58a (see FIG. 9B), and the cam portion 66 further moves to the 0-digit side, the cam portion 66 causes the roller holder 58 to move to the cutter discharge driven roller. 57 is swung in a direction away from the cutter discharge driving roller 56 (counterclockwise in FIG. 9).
[0059]
That is, the roller release means in the auto cutter 2 moves the cutter carriage 53 to the standby position X. 1 The cutter discharge driven roller 57 is separated from the cutter discharge driving roller 56 by moving the cutter discharge driven roller 57 to the cutter discharge roller 56. Therefore, the control unit 8 (see FIG. 3) can switch between the pressed state and the separated state of the cutter paper discharge driven roller 57 by controlling the driving of the cutter carriage motor 54. During the printing operation, the cutter carriage 53 is always moved to the standby position X. 1 Therefore, the rotation operation of the cutter paper discharge driving roller 57 can be prevented from contributing to the printing paper conveyance operation, and it is possible to prevent the paper feeding accuracy from being lowered.
[0060]
Since the cutter carriage 53 is used as a driving means for separating the cutter paper discharge driven roller 57 from the cutter paper discharge driving roller 56 in this way, it is not necessary to separately provide a dedicated drive means, and the auto cutter 2 The cost can be reduced.
[0061]
The cutter discharge driven roller 57 may be in the separated state at least after the printing paper is moved by the recording head 21 after the trailing edge of the printing paper is removed from the conveyance roller 19. 19, that is, while the precision feeding operation is performed by the conveying force of the conveying roller 19, the cutter discharge driving roller 56 may be in pressure contact. As described above, even when printing is performed on printing paper (cut sheet paper) with the auto cutter 2 mounted on the printer 1, the paper feeding accuracy is not reduced, and accordingly, when printing on roll paper, It is not necessary to attach and detach the autocutter 2 each time when switching to cut sheet paper, and the printer 1 can be used while the autocutter 2 is mounted, which improves user convenience. .
[0062]
【The invention's effect】
As described above, according to the present invention, the cutter carriage supports the portion near the cutter blade (hereinafter referred to as “cut end”) of the recording material cut by the cutter blade from below. And the cutter device moves the cutter carriage from the standby position to the vicinity of the recording material side end when cutting the recording material, cuts the recording material, and then folds the recording material near the side end. Since the cutter carriage is returned to the standby position, the cut end is not detached from the support surface, and the state where the cut end is supported by the support surface is maintained. Therefore, when the cutter carriage returns to the standby position, the cutter carriage does not collide with the hanging cut end, and an appropriate recording result can be obtained by reliably protecting the cut end. It becomes possible. Further, the standby position of the cutter carriage is in the vicinity of one end of the recording material, and the reciprocating operation at the time of cutting is folded back in the vicinity of the end of the other recording material. It is performed only in the range of the side edge position. That is, the cutter carriage does not perform an unnecessary movement operation and reciprocates only within a necessary range, so that the time for the cutting operation can be shortened and the life of the cutter blade can be extended.
[Brief description of the drawings]
FIG. 1 is an external perspective view of an ink jet printer according to the present invention.
FIG. 2 is a schematic side sectional view of an ink jet printer according to the present invention.
FIG. 3 is a block diagram of a control system of the ink jet printer according to the present invention.
FIG. 4 is a side sectional view of an auto cutter according to the present invention.
FIG. 5 is an external perspective view of a cutter carriage constituting the auto cutter according to the present invention.
FIG. 6 is an explanatory view showing a moving range of the auto cutter according to the present invention.
FIG. 7 is a front view of a tooth wheel train constituting the ink jet printer and the auto cutter according to the present invention.
FIG. 8 is a perspective view of a cutter paper discharge driven roller holder constituting the auto cutter according to the present invention.
FIG. 9 is a side sectional view of the vicinity of a cutter paper discharge driven roller holder constituting the auto cutter according to the present invention.
FIG. 10 is a front view of an auto cutter according to the present invention.
FIG. 11 is an overall perspective view of a cutter device according to a conventional technique.
12 is a side view of the cutter device according to the prior art (viewed in the direction of arrow z in FIG. 11).
[Explanation of symbols]
1 Inkjet printer
1b Paper outlet
2 Auto cutter
8 Control unit
15 Transport drive roller
17 Conveyor driven roller
19 Transport roller
21 Inkjet recording head
26 First paper discharge roller
27 Second paper discharge roller
28 First paper discharge drive roller
29 Second paper ejection drive roller
30 First discharge driven roller
31 Second paper discharge driven roller
36 Roller drive motor
38 Conveyance drive roller gear
41 Printer-side transmission gear
43 Printer-side gear unit
51 Cutter paper guide
52 Shear plate
53 Cutter carriage
53a Support surface
54 Cutter carriage motor
55 Rotary blade
56 Cutter discharge roller
57 Cutter discharge driven roller
58 Cutter discharge driven roller holder
58a Prop section
58b Spring hook
58c Cam follower
59 Compression coil spring
60 Carriage guide frame
61 Roller frame
62 Holder
63 Clamping member
65 Cam member
66 Cam part
70 Cutter discharge roller gear
73 Cutter side transmission gear
74 Printer-side gear unit
P Printing paper

Claims (7)

  1. A shear plate flat in the width direction of the recording material;
    A cutter blade that contacts the end of the shear plate and shears the recording material from below while moving in the width direction of the recording material;
    It is provided so as to be able to reciprocate in the width direction of the recording material provided with a support surface that holds the cutter blade and supports a portion near the cutter blade of the recording material cut by the cutter blade from below. A cutter carriage;
    Recording material holding means for holding and holding the recording material between the upstream side and the downstream side of the cutter blade, and by reciprocating the cutter carriage in the width direction of the recording material. A cutter device that performs a cutting operation,
    The cutter blade has a standby position in the vicinity of one recording material side end, and is folded back in the vicinity of the other recording material side end during the reciprocating operation, whereby the cutter blade of the cut recording material is cut It is configured to maintain a state in which the vicinity portion is supported by the support surface,
    A cutter device characterized by that.
  2. In Claim 1, it has a side edge position detecting means which detects a recording material side edge position far from the standby position.
    A cutter device characterized by that.
  3. In Claim 1 or 2, the recording material holding means, a pressing member for clamping the recording material between the shear plate,
    A cutter device comprising: a pressure roller provided on a downstream side of the cutter blade, for pressing a recording material.
  4. In any 1 paragraph of Claims 1-3, it is provided with the inclined surface which scoops up the portion near the cutter blade of the cut recording material on the one side or both sides of the support surface in the reciprocating direction of the cutter carriage.
    A cutter device characterized by that.
  5. A shear plate flat in the width direction of the recording material;
    A cutter blade that contacts the end of the shear plate and shears the recording material from below while moving in the width direction of the recording material;
    A cutter carriage that is reciprocally movable in the width direction of the recording material and holds the cutter blade;
    Recording material holding means for holding and holding the recording material between the upstream side and the downstream side of the cutter blade, and by reciprocating the cutter carriage in the width direction of the recording material. A cutter device that performs a cutting operation,
    The recording material holding means, a clamping member for clamping the recording material with the shear plate;
    A pressure roller provided on the downstream side of the cutter blade, for pressing the recording material, and
    When the cutter carriage is folded back in the reciprocating operation, the downstream side portion of the cut recording material is fed downstream from the cutter blade by rotating the nipping roller. Yes,
    A cutter device characterized by that.
  6. In Claim 5, the said pinching member consists of a roller body rotated,
    When the cutter carriage is turned back in the reciprocating operation, the roller body is rotationally driven to feed the upstream portion of the cut recording material from the cutter blade to the upstream side. ,
    A cutter device characterized by that.
  7. A recording apparatus comprising a recording unit for recording on a recording material, comprising the cutter device according to any one of claims 1 to 6 on a downstream side of the recording unit.
    A recording apparatus.
JP2002062153A 2002-03-07 2002-03-07 Cutter device and recording apparatus provided with the cutter device Expired - Fee Related JP3867779B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002062153A JP3867779B2 (en) 2002-03-07 2002-03-07 Cutter device and recording apparatus provided with the cutter device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002062153A JP3867779B2 (en) 2002-03-07 2002-03-07 Cutter device and recording apparatus provided with the cutter device

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JP3867779B2 true JP3867779B2 (en) 2007-01-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102653102A (en) * 2011-03-04 2012-09-05 株式会社理光 Sheet cutting device and image forming apparatus including the sheet cutting device

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JP2009179036A (en) 2008-02-01 2009-08-13 Seiko Epson Corp Cutter device and recording device
JP5187503B2 (en) 2008-03-07 2013-04-24 セイコーエプソン株式会社 Cutter device, recording device
JP5380865B2 (en) 2008-03-11 2014-01-08 セイコーエプソン株式会社 recording device
JP5335278B2 (en) * 2008-05-09 2013-11-06 キヤノン株式会社 Paper cutting device
JP5678417B2 (en) * 2009-08-25 2015-03-04 セイコーエプソン株式会社 Cutter device and recording device
JP5673697B2 (en) * 2013-01-25 2015-02-18 セイコーエプソン株式会社 Recording device
JP2013099849A (en) * 2013-02-15 2013-05-23 Seiko Epson Corp Cutter device and recording apparatus
JP6380275B2 (en) * 2015-07-28 2018-08-29 株式会社寺岡精工 Printer, packaging equipment
JP2019155579A (en) * 2018-03-16 2019-09-19 株式会社リコー Sheet cutting device and image forming apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102653102A (en) * 2011-03-04 2012-09-05 株式会社理光 Sheet cutting device and image forming apparatus including the sheet cutting device
CN102653102B (en) * 2011-03-04 2015-08-12 株式会社理光 Paper cutting device and the image forming apparatus comprising this paper cutting device

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