JP2002301685A - Cutter device and recording device with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutter device capable of controlling recording and cut so that the recording material can be effectively used up without wasting end parts thereof. SOLUTION: This cutter device is provided with a shearing plate formed flat in the cross direction of the recording material and a cutter for shearing the recording material from under thereof between the shearing plate and capable of moving in the cross direction of the recording material. This cutter device is also provided with a pressure-pinching means for holding the recording material with the pressure between the shearing plate over the cross direction of the recording paper by raising the recording material higher than the carrying position when non-cutting and pushing the recording material to a lower surface of the shearing plate. A part of the pressure-pinching means for pinching the recording material with pressure between the shearing plate is formed of a driving roller to be rotated by the power transmitted from a driving power source, and the driving roller is controlled to stop the turning thereof when cutting the recording material by a control unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a facsimile (F)
AX), a printing apparatus typified by a printer, etc., which relates to a cutter device provided with a cutter blade capable of cutting a recording material while moving along a main scanning direction and cutting a recording material at a predetermined position. The invention also relates to a recording device provided with the cutter device.

[0002]

2. Description of the Related Art In a recording apparatus such as a facsimile (FAX) or a printer, a cutter apparatus for cutting a recording material at a predetermined position on the recording apparatus may be mounted. In particular, the cutter device is often mounted on a recording device that performs recording using a recording material wound in a roll shape. The cutter device includes a cutter blade movable in the main scanning direction, that is, the width direction of the recording material, and cuts the recording material at a predetermined position while moving in the main scanning direction. It is configured.

[0003]

In the case where the recording material wound in a roll shape is cut for each recording unit at the starting end, the recording material having a sufficient length upstream from the cutter blade is required. Is present, the recording material can be cut at a predetermined position, and subsequently, recording on an unrecorded portion and conveyance of the recording material can be stably executed as they are. However, when the recording material is cut while leaving a small length at the terminal end portion, the recording material having a small length remains upstream from the cutter blade after cutting.

If the length of the recording material left after cutting becomes short enough to fit in the cutter device, it becomes difficult to discharge the recording material. Therefore, recording is performed as a cut sequence at the end of the recording material. It had to be constructed so that the end of the material left at least a length extending outside the cutter device. Therefore, there has been a problem that it is difficult to effectively use the end portion of the recording material wound in a roll shape without waste.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cutter device capable of constructing a recording and cutting control capable of effectively using the end portion of a recording material without waste, and a recording device having the same. It is in.

[0006]

According to a first aspect of the present invention, there is provided a cutter apparatus comprising: a shearing plate which is flat in a width direction of a recording material; A cutter blade capable of moving the recording material in the width direction of the recording material, the cutter blade being configured to cut the recording material near the upstream side of the cutter blade when cutting the recording material. A pressing means for holding the recording material between the shearing plate across the width direction by raising the recording material from the conveying position at the time of cutting and pressing against the lower surface of the shearing plate; A portion for holding the recording material between the shearing plate and the shearing plate is formed by a driving roller that is rotated by power transmitted from a driving source, and the driving roller is rotated by a rotation control unit.
It is characterized in that the rotation is controlled to stop when the recording material is cut.

According to the present invention, at the time of cutting the recording material, the recording material is held between the lower surface of the shearing plate and the driving roller in the rotation stopped state near the upstream side of the cutter blade. Even if the length of the recording material remaining after cutting at the end portion of the recording material is a short one that fits in the cutter device, the drive roller is rotated after the cutting. As a result, it is possible to surely and easily send the remaining cut waste (remaining cut) of the recording material to a predetermined discharge destination. Therefore, it is possible to construct a recording and cutting control that can effectively use the end portion of the recording material without waste.

Further, according to the present invention, the recording material is cut while being held between the lower surface of the shear plate and the shearing plate.
Since the recording material is raised from the non-cut transport position by the drive roller and pressed against the lower surface of the shearing plate, in a normal recording and transport step, the drive roller is used to transport the non-cut recording material. It is retracted below the position (the traveling path of the recording material) and does not get in the way.

According to a second aspect of the present invention, in the cutter device according to the first aspect, when the recording material is not cut, the driving roller of the squeezing means is provided with the shearing force. The recording material is formed so as to be in contact with the lower surface of the recording material at the non-cut transport position separated from the lower surface of the plate.

According to the present invention, when the recording material is not cut, the recording material comes into contact with the lower surface of the recording material at a non-cut transport position separated from the lower surface of the shearing plate. During normal recording and conveyance, the recording medium guides the progress of the recording material from below, and the rotation of the recording medium can also apply a feeding force.
Stable transport can be realized.

According to a third aspect of the present invention, in the cutter device according to the first or second aspect, a discharge drive roller that is rotated by being transmitted with power from a drive source near the downstream side of the cutter blade is provided. The drive roller is provided so that power is transmitted by interlocking with the discharge drive roller.

According to the present invention, the rotation of the drive roller is linked with the rotation of the discharge drive roller for discharging the recording material having passed the cutting position to the outside of the apparatus. It is possible to completely prevent occurrence of a state in which the recording material positioned downstream (forward in the feed direction) is conveyed and only the recording material positioned upstream (rear in the feed direction) from the cutter blade is conveyed. it can. Therefore, it is possible to completely prevent a risk that one end of the recording materials cut and separated from each other is pressed against the other end and damaged.

According to a fourth aspect of the present invention, in the cutter device according to any one of the first to third aspects, the cutter blade comprises a rotary blade. According to the present invention, since the cutter blade is a rotary blade, the load on the recording material cutting portion of the cutter blade is dispersed, and the frequency of replacement of the cutter blade can be reduced.

According to a fifth aspect of the present invention, in the cutter device according to any one of the first to fourth aspects of the present invention, the driving roller is provided with a clock as viewed from the side of a traveling path of the recording material. The rotating member, which is rotatable in the clockwise and counterclockwise directions and extends in the width direction of the recording material, is provided at an end separated from the rotating shaft and is biased by a biasing member that rotationally biases the rotating member. The cutter member is configured to hold the recording material under pressure, the rotating member has a cam follower portion at the shaft end of a rotating shaft, and the cutter holder that supports the cutter blade and is slidable in the main scanning direction. A cam follower that engages with the cam follower, and when the cutter holder is near the end of the rotating shaft of the rotating member, the cam and the cam follower are engaged and the urging is performed. Rotating the rotating member against the member, Therefore, when the recording material is not pressed by the drive roller and the cutter holder is separated from the vicinity of the end of the rotation shaft of the rotation member, the cam portion and the cam follower portion are not engaged. In a combined state, the rotating member is rotated by the urging force of the urging member, whereby a state in which the recording material is pressed by the driving roller is formed.

According to the present invention, the drive roller is provided at the end of the rotatable member which is rotatable in a side view of the traveling path of the recording material, and is driven by the shear plate by rotating the rotatable member. Since the rollers are brought into pressure contact with each other to form the nip state of the recording material, the nip pressure of the recording material by the driving roller can be performed at a low cost with a simple structure. Further, the recording medium is configured to be switched between a squeezed state and a non-squeezed state by engagement of a cam portion provided on a cutter holder supporting a cutter blade and a cam follower portion provided on the rotating member. And, when the cutter holder is near the shaft end of the rotating shaft of the rotating member extending in the width direction of the recording material, the non-clamping state is established and the recording material passes through without any load. The cutter holder does not obstruct the passage of the recording material.

According to another aspect of the present invention, there is provided a recording apparatus that performs recording on a recording material, a paper feed roller that feeds the recording material to the recording unit from an upstream side thereof, What is claimed is: 1. A recording apparatus comprising: a paper discharge roller provided near a downstream side; and a cutter device provided downstream of the paper discharge roller and configured to cut a recording material at a predetermined position. It is a cutter device described in any one of 1 to 5. According to the present invention, in the recording apparatus, it is possible to obtain the same functions and effects as those of the above-mentioned invention.

According to a seventh aspect of the present invention, in the recording apparatus according to the sixth aspect, the recording material wound in a roll shape can be recorded and cut. . The effect of the present invention is particularly remarkable when cutting a recording material wound in a roll shape.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1. First, an overview of a two-sided printing apparatus as a “recording apparatus” according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is an external perspective view of a double-sided printing apparatus as viewed from above from the front, and FIG. 2 is a schematic side sectional view of the double-sided printing apparatus.

The double-sided printing apparatus 100 is provided with a printing paper (represented by a symbol R) as a recording material wound in a roll at a central portion on the front side of the apparatus, and prints the printed printing paper. There is provided a substantially U-shaped feeding path in a side view where the paper feeding side and the paper discharging side are discharged from the central portion on the front side of the same apparatus. For the sake of convenience in the following description, the recording material wound in a roll shape is referred to as a “roll R”, and the recording material is fed out of the roll R and printing is possible. Is referred to as “roll paper P”.

In FIG. 1, reference numeral 1 denotes a roll paper cassette on which the roll R is set, and reference numeral 50B denotes a cutter device for cutting the printed roll paper P at a predetermined position. As shown in FIG. 1, the roll paper cassette 1 is disposed at the lower center on the front side of the main body of the duplex printing apparatus 100 so that the cassette can be pulled out to the front side of the duplex printing apparatus 100 for replacing the roll R. Has become.

As shown in FIG. 2, the roll paper P fed from the front side of the apparatus to the rear side of the apparatus (from the right side to the left side in FIG. 2) is bent upward at the rear side of the apparatus so as to be turned upside down (FIG. 2). Goes to the right) and is discharged from above the roll paper cassette 1 (see FIG. 1). The lid 2 of the roll paper cassette 1 includes a dust stacker 2c for stacking cut dust generated when the roll paper P is cut by the cutter device 50B (not shown in FIG. 1). Cut dust generated in the device 50 is supplied to a window hole 10 provided below the cutter device 50B.
1 (see FIG. 1) to fall to the dust stacker section 2c. On the other hand, with respect to the roll paper P on which printing as an object has been performed, the roll paper P slides down the curved surface 2 a of the lid 2 and is discharged to the paper discharge stacker 8 (not shown in FIG. 1) provided on the front side of the roll paper cassette 1. Will be stacked. The detailed configuration of the cutter device 50B will be described later.

Next, with reference to FIG. 2, each component provided on the traveling path of the roll paper P will be described.
In the following, for convenience of description, in a series of feeding paths until the roll paper P is discharged, the upstream side of the feeding path is referred to as “upstream side”, and the downstream side of the feeding path is referred to as “downstream side”. Side ".

The double-sided printing apparatus 100 is provided with two ink jet recording apparatuses at the top and bottom near the center of the apparatus. Reference numeral 102A denotes a first printing on the roll paper P first.
An ink jet recording device (hereinafter abbreviated as “first recording device”) is shown, and reference numeral 102B is a second ink jet recording unit (hereinafter abbreviated as “second recording device”) that finally performs printing on roll paper P. Is shown). The first recording apparatus 102A includes a transport roller (also referred to as a paper feed roller) 103 including a transport drive roller 103a that transports the roll paper P and a transport driven roller 103b that is pressed against the transport drive roller 103a, and a lower surface of the carriage 104. A nozzle head 104a as a “recording unit” provided in
The discharge roller 105 includes a discharge drive roller 105a provided downstream of the nozzle head 104a and a discharge driven roller 105b that lightly presses the roll paper P between the discharge drive roller 105a and the discharge drive roller 105a.

The transport drive roller 103a is driven to rotate by a drive motor (not shown),
The roll paper P is transported at a constant pitch toward the side a. The carriage 104 reciprocates in a main scanning direction (a direction perpendicular to the plane of FIG. 2) by a drive motor (not shown) while being guided by the carriage guide shaft 104b. The nozzle head 104a receives supply of ink from an ink cartridge 106 provided on the upper front side (upper right in FIG. 2) of the duplex printing apparatus 100, and discharges the ink onto the roll paper P transported to the opposing portion thereof. Print is performed. The paper discharge drive roller 105a is driven to rotate by a drive motor (not shown) and discharges the printed roll paper P to the downstream side.

The configuration of the second recording device 102B is also the same as that of the first recording device 102B.
Since the recording apparatus is the same as the recording apparatus 102A, the same reference numerals are given to the same components in FIG.
Conveying roller 103 and nozzle head 1 constituting a recording apparatus
04a and the paper discharge roller 105 function as a "second transport roller", a "second recording unit", and a "second paper discharge roller", respectively.

From the roll paper cassette 1 to the first recording device 10
On the path leading to 2A, the roll paper P is fed to the first recording device 102A by the paper feed roller 11 provided in the roll paper cassette 1. In the first recording apparatus 102A, printing is performed on one side (upper side in FIG. 2) of the roll paper P, and the leading end of the roll paper P passes through the cutter device 50A and is provided near the downstream side of the cutter device 50A. The rotation of the auxiliary drive roller 107 causes the paper to be fed into the paper feed guide 108.

The paper feed guide 108 has a substantially U-shape as viewed from the side as shown in the figure, whereby the roll paper P fed into the paper feed guide 108 is curved and inverted upward, and the first recording is performed. It heads to the second recording device 102B with the surface on which recording has been performed by the device 102A facing down. Therefore, in the second recording device 102B, the second recording device 1
The surface of the roll paper P facing the nozzle head 104a in the second recording device 102B is opposite to the first recording surface, so that printing is performed by the second recording device 102B. Printing is performed on both sides.

Incidentally, more specifically, the first recording device 1
A cutter device 50A is disposed downstream of 02A, and the leading end of the roll paper P is nipped by an auxiliary paper feed roller 109 provided in the middle of a U-shaped feed path formed by a paper feed guide 108. After that, the roll paper P is cut by the cutter device 50A, cut into a cut sheet state, fed to the second recording device 102B, and printed.

In order to more accurately perform this series of sheet feeding operations, sheet overlap detectors 112 are provided on a U-shaped feeding path formed by the sheet feeding guide 108, and the sheet overlap detectors 112 are provided. The overlap detectors 112 and 112 detect an overlap state between the rear end of the roll paper P cut into the cut sheet state and the front end of the next roll paper P following the rear end, and as necessary. The paper feed speeds of the first recording device 102A and the second recording device 102B are adjusted.

At this time, when the leading end of the cut roll paper P reaches the second recording device 102B, the trailing end of the cut roll paper P is The length of a feeding path from the first recording device 102A to the second recording device 102B is sufficiently ensured so as not to exist in the first recording device 102A.

Next, a cutter device 50B is disposed downstream of the second recording device 102B, and the roll paper P which is in a cut sheet state and which is printed on both sides and discharged is:
Unnecessary portions on the start and end sides are cut off by the cutter device 50B, and further cut at predetermined positions as necessary, and are discharged to the discharge stacker 8.
The outline of the duplex printing apparatus 100 has been described above. In the present embodiment, the first recording apparatus 102A for performing recording on the roll paper P is disposed at the lower part, and the second recording apparatus 102B for performing recording on the roll paper P is disposed at the upper part. The configuration is such that the roll paper P discharged from the recording apparatus 102A is inverted and curved upward. However, this is reversed, and the first recording apparatus 102A is disposed above and the roll paper P is inverted and curved downward. It may be configured to feed.

2. Configuration and operation effect of cutter device 2-1. Next, the cutter device 50B will be described with reference to FIGS.
Will be described. FIG. 3 shows a cutter device 50.
FIG. 4 is an external perspective view of B as viewed from above from the front, and FIG. 4 is an external perspective view of the cutter device 50B showing a state in which a paper discharge frame 68 provided is removed. FIG. 5 is a perspective view of the cutter blade unit 51, and FIG.
(B) is a side view of the cutter device 50B.

Referring to FIGS. 3 and 4, a cutter device 50 is provided.
B is a side frame 61a, 61c, a main frame 61b provided between the side frames 61a, 61c, which is long in the width direction of the roll paper P, and a discharge frame 68 which is similarly long in the width direction of the roll paper P. The base member is substantially constituted by the frame member, and the roll paper P to be cut advances through the lower part of the paper discharge frame 68 from the back side to the front side in FIGS. 3 and 4 and is discharged. I have. As shown in FIGS. 1 and 2, a second recording device 102B is disposed on the back side (upstream side) of the cutter device 50B in FIGS. 3 and 4, and the cutter device 50B performs the second recording. Nozzle head 10 of device 102B
4a (recording section), printing is performed,
5, the roll paper P discharged out of the second recording apparatus 102B is cut at a predetermined position.

A cutter blade unit 51 is provided at the back of the paper discharge frame 68 as shown in FIG. The cutter blade unit 51 is connected to a drive pulley (not shown) and a drive belt (not shown) which is provided around a driven pulley (not shown) provided near both ends of the main frame 61b, respectively. The drive pulley (not shown) is driven by a drive motor 56 attached to 61c.
Is rotated so that it can reciprocate in the left-right direction (the width direction of the roll paper P) in FIGS. 3 and 4.

FIG. 5 is an enlarged perspective view of the cutter blade unit 51. The cutter blade unit 51 includes a rotary cutter blade 52 and a cutter blade holder 54 that supports the rotary cutter blade 52. The rotary cutter blade 52 has, as shown in FIG.
Is arranged in parallel with a vertical plane that blocks the progress of the
With the top of the disk protruding slightly upward from the end face of
The disk surface is provided so as to contact the end surface of the shearing plate 53. As shown in FIG. 4, the shear plate 53 is provided in the width direction of the roll paper P and parallel to the horizontal plane.

The rotary cutter blade 52 is rotatably supported by a cutter blade holder 54 about a rotary shaft 52a. When the cutter blade unit 51 reciprocates in the direction of the arrow in FIG. A pressing roller (not shown) configured to rotate integrally with the blade 52 and pressed against the lower surface of the shearing plate 53, and is driven to rotate by frictional force with the shearing plate 53, and roll paper P is sheared from below with the shear plate 53.

3 and 4, a discharge drive roller shaft 55a is supported by the side frames 61a and 61c below the discharge frame 68.
5a includes a plurality of discharge drive rollers 55 extending in the axial direction.
Is attached. To the discharge drive roller shaft 55a,
Rotational power is transmitted from a drive motor (not shown) provided on the main body side of the duplex printing apparatus 100 via a gear train 58 provided on the side frame 61c, and the discharge drive roller 55 rotates. I have.

FIG. 6B shows the gear train 58. As shown, the gear train 58 is provided with a gear mounted on the most upstream side (left side in FIG. 6) of the cutter device 50B. 74, a gear 72 attached to one end of the discharge drive roller shaft 55a, and a connecting gear 73 connecting the gear 74 and the gear 72. The gear 74 is provided on a power transmission gear 75 provided in the duplex printing apparatus 100. The engagement drives the discharge drive roller shaft 55a to rotate. In this embodiment, the power transmission gear 75 provided in the two-sided printing apparatus 100 is used to transfer a printed sheet located near the downstream of the recording unit of the printing apparatus 100 to the downstream apparatus 1.
The gear is interlocked with the paper discharge roller 105 that discharges the paper to the outside.

Next, returning to FIG. 3, a plurality of discharge driven roller mounting devices 60 are mounted on the discharge frame 68 in the width direction of the roll paper P. Further, a discharge driven roller 63 that is driven by the discharge driven roller 55 to rotate in contact with the discharge driven roller 55 is mounted by the paper driven driven roller mounting device 60 (FIGS. 7 to 9). Therefore, the rotary cutter blade 52
The roll paper P cut by the discharging drive roller 5
5 and the paper discharge driven roller 63, and the discharge drive roller 55 is rotated in such a lightly pressed state, whereby the paper is discharged in the discharge direction (front side direction in FIG. 3). The detailed configuration of the sheet discharge driven roller mounting device 60 will be described later. The above is the schematic configuration of the cutter device 50B.

2-2. Next, the detailed configuration, operation, and effects of the discharge driven roller mounting device 60 will be described with reference to FIGS. 7 and 8.
Here, FIG. 7 is a perspective view of the paper discharge driven roller mounting device 60, and FIGS. 8A and 8B are side sectional views of the paper discharge driven roller mounting device 60.

As shown in FIG. 7, the paper discharge driven roller mounting device 60 includes a frame member 6 mounted on the paper discharge frame 68.
2, a rotating member 64 rotatably attached to the frame member 62 and rotatably supporting the paper discharge driven roller 63;
And a tension coil spring 65 suspended between the rotating member 64 and the rotating member 64. The frame member 62 includes the rotating member 6.
4 and is substantially L in side view as shown in FIG.
A bearing portion 6 that supports a rotating shaft 64b of a rotating member 64 at a corner portion of a discharge frame 68 having a U-shape.
2b. The downstream side (the right side in FIG. 8)
Is formed with a locking portion 62a to which one end of the tension coil spring 65 is locked.

The pivot member 64 has a shaft support 64a shown in FIG.
As shown in FIG. 7, the paper discharge driven roller 63 is axially supported by two shafts. The paper discharge driven roller 63 is formed of a star wheel having a gear shape, thereby preventing the ink from re-adhering on the printing surface which is in point contact with the printed roll paper P and is in a semi-dry state. ing. In this embodiment, the discharge driven roller 63 uses a star foil that makes point contact with the roll paper P. However, if the dry state of the ink on the printing surface is good, this is used as the roll paper P and the elasticity. It is also possible to use an elastic roller that makes surface contact with the surface, and protect the printing surface by elastic surface contact.

Here, the rotating member 64 is rotatable clockwise and counterclockwise as shown in FIG. 8 around a rotating shaft 64b provided on the upstream side (left side in FIG. 8).
By the rotation, the paper discharge driven roller 63 separates and approaches (presses) to the discharge drive roller 55 indicated by a virtual line.
You can do it. The rotating member 6
4 is formed with an arm portion 64c extending obliquely upward on the upstream side (upper left in FIG. 8), and a protruding end of the arm portion 64c is engaged with one end of a tension coil spring 65. A portion 64d is formed. As described above, the tension coil spring 65 is suspended between the locking portion 64d and the locking portion 62a formed on the frame member 62. As a result, the rotating member 64 is always urged to rotate clockwise as shown in FIG. 8, so that the paper discharge driven roller 63 is always urged in a direction of pressing against the discharge driving roller 55. Has become.

The operation and effect of the paper discharge driven roller mounting device 60 configured as described above will be described below with reference to FIG. First, in the cutter device 50B, the rotary cutter blade 52 shears the roll paper P with the shear plate 53 while moving in the width direction of the roll paper P, as described above. Since the roll paper P is going to float upward (the state shown in FIG. 8B), the portion where the roll paper P is going to rise is pressed down by the paper discharge driven roller 63 urged by the tension coil spring 65. Receives such pressing force.

Here, the magnitude of the force with which the roll paper P tends to float differs depending on the thickness or the material of the roll paper P, so that an appropriate pressing force in accordance with the material and the like of the roll paper P varies. Although it is necessary to set, the setting of the pressing force can be performed only by changing the spring constant of the tension coil spring 65. That is, the tension coil spring 6
5 is suspended between the locking portion 64d and the locking portion 62a and plays only a role of urging the rotation of the rotating member 64. Therefore, the bar spring 91 according to the prior art shown in FIG. Thus, the degree of freedom in changing the spring constant is improved as compared with the configuration in which the shaft supporting member and the urging member of the discharge driven roller 90 are also used,
Therefore, it is possible to easily and easily set the pressing force for pressing the roll paper P.

As shown in FIG. 3, a plurality of discharge driven roller mounting devices 60 are provided in the width direction of the roll paper P, and each of them can independently displace the driven discharge roller 63 in the vertical direction. In the width direction of the roll paper P, a plurality of paper ejection driven rollers 63 are all integrated with the ejection drive roller 55. A portion of the roll paper P that is cut by 52 and is about to float;
An appropriate pressing force can be applied to other parts.

In the present embodiment, the discharge driven roller mounting device 60 having the above-described functions and effects is applied to the mounting of the discharge driven roller 63 provided in the cutter device 50B, as shown in FIG. , A paper discharge driven roller 1 provided in the first recording device 102A or the second recording device 102B
It is needless to say that the present invention can be applied to the mounting of 05b or the like.

2-3. Configuration and Operation and Effect of Roll Paper Nipping Means Next, with reference to FIG. 9, the configuration and operation and effect of the nipping means for nipping and holding the roll paper P near the upstream side of the rotary cutter blade 52 will be described. Here, FIG. 9 is a side sectional view of the cutter device 50B, and FIG. 9A is a view in which the rotary cutter blade 52 (cutter blade unit 51) is in the standby position (FIG. 4).
(B) shows a state where the rotary cutter blade 52 is not at the standby position (a state where the roll paper P is sheared).

In FIG. 9A, the discharge drive roller 55 and the discharge driven roller 53 are provided near the downstream side of the rotary cutter blade 52 as described above. The discharge drive roller 55 is attached to the discharge drive roller shaft 55a. A first cam follower 67 is provided at one end of the discharge drive roller shaft 55a (see FIG. 4). Is connected to a blocking plate 66 that is long in the width direction of the roll paper P (see FIG. 4). The first cam follower portion 67 is provided so as to be rotatable clockwise and counterclockwise as shown in FIG. 9 around the discharge drive roller shaft 55a, and a blocking plate 66 connected to the first cam follower portion 67 is also provided. Similarly, it rotates about the discharge drive roller shaft 55a. Further, the first cam follower 67
9A is in a state where it is rotationally biased in a counterclockwise direction (a rotational direction in which the blocking surface 66a moves toward the vertical state) shown in FIG. 9A by a torsion coil spring (not shown).

When the cutter blade unit 51 is not at the standby position (when the roll paper P is being cut), the first cam follower 67 is engaged with the cutter blade unit 51 as a “cam unit”. Is released, and the urging force of the torsion coil spring (not shown) places the blocking surface 66a in a substantially vertical state as shown in FIG. 9B. On the other hand, when the cutter blade unit 51 is at the standby position, the cutter blade unit 51 is engaged with the first cam surface 51a (see FIG. 5) of the cutter blade unit 51 and is placed in a state as shown in FIG. Thereby, the blocking surface 6 of the blocking plate 66 is
6a is in an acute angle (almost horizontal state) with respect to the horizontal plane.

Here, the roll paper P is supplied to the cutter device 50.
During the non-cutting operation of B, the sheet passes through the clearance between the lower surface of the shearing plate 53 and a pressing drive roller 69 described in detail later, and is gently pressed by the discharge drive roller 55 and the discharge driven roller 53 to the downstream side. (In the direction indicated by the arrow in FIG. 9A). At this time, the leading end of the roll paper P that has passed between the shearing plate 53 and the squeezing drive roller 69 hangs down before the discharge drive roller 55 in some cases. There is a danger that it will not be able to get under the regular traveling route by getting underneath. However, in the present embodiment, the blocking surface 66a of the blocking plate 66 is
As shown in FIG. 9 (A), by being in a substantially horizontal state at an acute angle with respect to the horizontal plane, it is possible to prevent a problem that the leading end of the roll paper P falls under the discharge drive roller 55, The roll paper P is configured to surely follow a regular traveling path.

Next, a pressing means for holding the roll paper P between the roll plate P and the shear plate 53 in the width direction will be described. When the roll paper P is cut, the pressing means raises the roll paper P near the upstream side of the rotary cutter blade 52 from the transport position (the position shown in FIG. 9A) when the roll paper P is not cut. B) is pressed against the lower surface of the shear plate 53 as shown in FIG. In this pinching means, a portion for pinching and holding the roll paper P between the lower surface of the shearing plate 53 and the lower surface of the shearing plate 53 is formed by a driving roller 69 which rotates by being transmitted power from a driving source. By a rotation control unit (not shown), the roll paper P
Is controlled so as to stop the rotation at the time of cutting.

When the roll paper P is not cut, the drive roller 69 comes into contact with the lower surface of the roll paper P at the non-cut transport position where the roll paper P is separated from the lower surface of the shearing plate (fixed blade) 53. (FIG. 9)
(B)). In addition, a discharge drive roller 55 that rotates by being transmitted with power from a drive source is provided near the downstream side of the rotary cutter blade 52, and the drive roller 69 is coupled with the discharge drive roller 55 to transmit power. It is configured as follows.

Hereinafter, the structure of the pinching means will be described in detail. A rotating member 70 is provided below the shearing plate 53 so as to be rotatable clockwise and counterclockwise as shown in FIG. 9 around a rotating shaft 70 b of the rotating member 70. It is always placed in a state of being urged to rotate counterclockwise as shown in FIG. The rotating member 70 includes a rotating shaft 70.
b at a position separated from the pinch driving roller shaft 69a, and a pinching drive roller 69 is attached to the pinching drive roller shaft 69a.
Can be separated and pressed against the lower surface of the shear plate 53 by the rotation of the rotation member 70.

In the rotating member 70, a second cam follower portion 70a is formed in a portion located below the cutter blade unit 51, and the second cam follower portion 70a
Similarly to the first cam follower section 67, when the cutter blade unit 51 is not at the standby position (when the roll paper P is being cut), the second lower portion of the cutter blade unit 51 is located.
The engagement state with the cam surface 51b is released, whereby the urging force of the torsion coil spring 71 causes the squeezing drive roller 69 to rise and press against the lower surface of the shear plate 53 as shown in FIG. It will be in the state of having done. On the other hand, when the cutter blade unit 51 is at the standby position, the cutter blade unit 5
9 (A), whereby the roll paper P passes between the lower surface of the shearing plate 53 and the pressure driving roller 69. A certain clearance is formed.

Rotational power is transmitted from a driving source (not shown) to the squeezing drive roller shaft 69a.
Is configured to be rotatable. FIG. 6A shows a gear mechanism 57 that enables the pinching drive roller 69 to rotate.
Numeral 80 indicates a gear provided at one end of the pressure driving roller shaft 69a. The gear mechanism 57 is provided on the side frame 61a of the cutter device 50B as shown in FIG. 3, and is rotatably fixed to the side frame 61a in a state where the gears 76 to 79 are engaged. Here, the gear 80 is a gear 79
Although it is provided in a state always meshed with, as described above,
Since the axial position of the pinching drive roller shaft 69a to which the gear 80 is attached is displaced by the rotation of the rotating member 70, the gear 80 is a planetary gear having the sun 79 as the sun gear in FIG. It has become. The gear 76 for transmitting the power to the gear 80 is attached to the discharge drive roller shaft 55a, so that the rotation of the discharge drive roller shaft 55a causes the pinching drive roller shaft 69a to rotate in conjunction therewith. I have. The gear mechanism 58 for rotating the discharge drive roller shaft 55a is as described above with reference to FIG.

The squeezing drive roller 6 configured as described above
The operation and effect of the pinching means for the roll paper P 9 will be described below with reference to FIGS. 9 and 10. FIG. 10 is a side sectional view showing a state in which short cut waste remains after cutting at the end portion of the roll-shaped recording material.

At the time of cutting the roll paper P, near the upstream side of the rotary cutter blade 52, the roll paper P is cut by the driving roller 69 in the rotation stopped state while holding the roll paper P with the lower surface of the shearing plate 53. . Therefore, as shown in FIG. 10, even if the length of the roll paper P remaining after the cutting at the end portion of the roll paper P is short such that the length of the roll paper P fits into the cutter device, the drive roller is not cut after the cutting. 6
By rotating the roll 9, the cut waste (remaining cut) of the roll paper P left reliably and easily can be sent to a predetermined discharge destination. Therefore, it is possible to construct a recording and cutting control that can effectively use the end portion of the roll paper P without waste.

In this embodiment, the driving roller 69
A dust receiving portion (not shown) is provided below the discharge drive roller 55 and the drive roller 69. By rotating the drive roller 69 in the normal rotation direction (clockwise direction in FIG. 10), the cut waste is removed. It is designed to be dropped into. Needless to say, the discharge destination of the cut waste can be appropriately changed within a design-possible range. For example, by rotating the drive roller 69 in the reverse direction (counterclockwise direction shown in FIG. 10), the cut waste can be discharged to the upstream side.

Further, in this embodiment, the roll paper P is cut while being held between the lower surface of the shearing plate 53 and the shearing plate 53.
At this time, the drive roller 69 raises the roll paper P from a non-cut transport position and presses the roll paper P against the lower surface of the shearing plate 53. Therefore, in a normal recording and transport process, the drive roller 69 is not cut. It is retracted below the recording material transport position (the traveling path of the recording material) at the time and does not become an obstacle.

In this embodiment, when the roll paper P is not cut, the drive roller 69 moves the roll paper P at a non-cut transport position separated from the lower surface of the shearing plate 53. (FIG. 9B), the roll paper P can be guided from below during normal recording and conveyance, and a feed force can be applied by its rotation. , Stable conveyance can be realized.

In this embodiment, the driving roller 69
Is rotated in conjunction with the rotation of the discharge drive roller 55 for discharging the recording material that has passed through the cutting position to the outside of the apparatus. In a state in which the recording material positioned is stopped, the state in which only the recording material positioned upstream (rearward in the feed direction) from the rotary cutter blade 52 is conveyed can be completely prevented from occurring. Therefore, it is possible to completely prevent a risk that one end of the recording materials cut and separated from each other by the rotary cutter blade 52 is pressed against the other end and damaged.

[0063]

As described above, according to the present invention, at the time of cutting a recording material, the recording material is rotated by the drive roller in the rotation stopped state near the upstream side of the cutter blade. Since the cutting is performed while holding the nip between the recording material and the lower surface, even if the length of the recording material remaining after cutting at the end portion of the recording material is short such that the length of the recording material fits in the cutter device, the cutting is performed. By turning the drive roller later, the remaining cutting waste (remaining cut) of the recording material can be reliably and easily sent out to a predetermined discharge destination. Therefore, it is possible to construct a recording and cutting control that can effectively use the end portion of the recording material without waste.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a duplex printing apparatus according to the present invention.

FIG. 2 is a schematic side sectional view of a duplex printing apparatus according to the present invention.

FIG. 3 is an external perspective view of a cutter device according to the present invention.

FIG. 4 is a perspective view showing the cutter device according to the present invention in a state where a paper discharge frame is removed.

FIG. 5 is a perspective view of a cutter blade unit in the cutter device according to the present invention.

FIGS. 6A and 6B are side views of the cutter device according to the present invention.

FIG. 7 is an external perspective view of a discharge driven roller mounting device according to the present invention.

FIGS. 8A and 8B are side sectional views of the discharge driven roller mounting device according to the present invention, wherein FIG. 8A shows a case where the recording material is at a normal position, and FIG. 8B shows a case where the recording material is slightly lifted; Is shown.

FIG. 9 is a side sectional view of the cutter device according to the present invention,
(A) shows a state where the cutter blade is at the standby position, and (B) shows a state where the cutter blade is not at the standby position.

FIG. 10 is a side cross-sectional view of the cutter device according to the present invention, showing a state in which short cut chips are left after cutting at the end portion of a roll-shaped recording material.

FIG. 11 is a perspective view of a paper ejection driven roller mounting device according to the related art.

[Explanation of symbols]

 50A, 50B Cutter device 51 Cutter blade unit 52 Rotary cutter blade 53 Shear plate 54 Cutter blade holder 55 Discharge drive roller 55a Discharge drive roller shaft 56 Drive motor 57 Gear train 58 Gear train 60 Discharge driven roller mounting device 62 Frame member 63 Discharge driven roller 64 Rotating member 65 Tension coil spring 66 Blocking plate 67 First cam follower part 68 Discharge frame 69 Nipping drive roller 69a Nipping drive roller shaft 70 Rotating member 70a Second cam follower part 71 Tension coil spring 100 Duplex printer P roll paper

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B65H 29/20 B65H 35/04 35/04 B41J 29/00 H (72) Inventor Hidetoshi Kodama Suwa-shi, Nagano 3-5, Yamato F-term (reference) in Seiko Epson Corporation 2C058 AB12 AC07 AC11 AD01 AD03 AE04 AF20 AF23 AF51 LA03 LA13 LA24 LA38 LB10 LB36 LC02 LC12 LC24 2C061 AQ05 AR03 AS06 CK01 3C027 RR08 RR09 TT09 3 LA LB03

Claims (7)

[Claims] 1. A shear plate flat in the width direction of a recording material, and a cutter blade movable in the width direction of the recording material for shearing the recording material from below between the shear plate and the shear plate. A cutter device, near the upstream side of the cutter blade at the time of cutting the recording material, raises the recording material from a transport position at the time of non-cutting, and presses the recording material against the lower surface of the shearing plate. A clamping unit for clamping and holding the sheared plate with the shearing plate in the width direction, wherein the clamping unit for clamping and holding the recording material with the shearing plate transmits power from a driving source. A cutter device, comprising: a driving roller that is turned and rotated; and the driving roller is controlled by a rotation control unit to stop the rotation when the recording material is cut. 2. The recording medium according to claim 1, wherein the driving roller of the pressing means is arranged such that, when the recording material is not cut, the recording material is at a non-cut transport position separated from the lower surface of the shearing plate. A cutter device formed so as to contact a lower surface of a material. 3. The discharge driving roller according to claim 1 or 2, further comprising: a discharge driving roller that is rotated by being transmitted with power from a driving source near the downstream side of the cutter blade, wherein the driving roller is interlocked with the discharge driving roller. A cutter device configured to transmit power. 4. The cutter device according to claim 1, wherein the cutter blade is a rotary blade. 5. The method according to claim 1, wherein
The driving roller is provided at an end of the rotating member extending in the width direction of the recording material, which is rotatable in a clockwise direction and a counterclockwise direction when the traveling path of the recording material is viewed from the side, and is separated from the rotation axis. The recording member is nipped and held by an urging member that rotationally urges the rotating member; the rotating member has a cam follower portion at a shaft end of a rotating shaft; A cutter holder that supports the blade and is slidable in the main scanning direction includes a cam portion that engages with the cam follower portion. When the cutter holder is near a shaft end of a rotating shaft of the rotating member, A cam portion and the cam follower portion are engaged with each other to rotate the rotating member against the biasing member, thereby forming a non-pressed state of the recording material by the driving roller; The cutter holder is provided for the rotation shaft of the rotation member. When the cam unit and the cam follower unit are disengaged from each other near the shaft end, the cam member and the cam follower unit are disengaged, and the rotating member is rotated by the urging force of the urging member. A cutter device for forming a pressed state of a material. 6. A recording unit for recording on a recording material, a paper feed roller for feeding the recording material to the recording unit from an upstream side thereof, a paper discharge roller provided near a downstream side of the recording unit, A cutter device provided at a downstream side of the sheet discharge roller and configured to cut a recording material at a predetermined position, wherein the cutter device is any one of claims 1 to 5. A recording device, which is a cutter device. 7. The recording apparatus according to claim 6, wherein a recording material wound in a roll shape can be recorded and cut.