JP2003112455A - Recording sheet cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording sheet cutter arranged to cut a recording sheet by means of a moving cutting blade 2 abutting against the recording sheet from the nonrecording face side thereof in which the possibility of transferring ink from the recording face of the recording sheet to a fixed cutting blade 1 is low even if the recording face is pressed against the fixed blade 1 by means of a retaining part 13 at the time of cutting. SOLUTION: The recording sheet cutter comprises a fixed cutting blade 1 elongated in the widthwise direction of a recording sheet, and a moving cutting blade 2 reciprocal in the widthwise direction wherein the recording sheet being carried on a recording sheet carrying passage is cut at a cutting position by means of the fixed cutting blade and the moving cutting blade. The recording sheet cutter further comprises a part 13 for retaining the recording sheet while pressing the vicinity of the cutting position thereof against the surface of the fixed cutting blade 1 facing the recording sheet, and the facing surface of the fixed cutting blade 1 is provided with a layer 80 for preventing transfer of ink thereto from the recording face of the recording sheet at the time of contact.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mounted on a recording device such as a facsimile, a copying machine, a printer, etc., and cuts a recording paper to a desired length, and a recording equipped with the recording paper cutting device. Regarding the device.

[0002]

2. Description of the Related Art Conventionally, as one of recording devices equipped with a recording paper cutting device for cutting a recording paper after recording to a desired length, recording is performed on a roll of rolled long recording paper. Ink jet recording apparatuses having a feasible structure are known. This inkjet recording apparatus records on roll paper by a recording execution unit that alternately repeats an operation of ejecting ink from the recording head that reciprocates in the main scanning direction onto the roll paper and an operation of conveying the roll paper in the sub-scanning direction. To execute. Then, the recording paper cutting device disposed downstream of the recording execution means in the sub-scanning direction cuts the rolled paper after recording at a desired cutting position.

The recording paper cutting device generally comprises a fixed blade which is long in the width direction of the roll paper, that is, the main scanning direction, and a movable blade which slides on the fixed blade and reciprocates in the main scanning direction.
Shred the roll paper. The moving blade is generally a so-called rotary cutter that moves while rotating a round blade.
A holder equipped with a round blade is reciprocated by a driving force source such as a motor, and the round blade rotatably supported by the holder is
The roll paper is sheared while being rotated by a rotating mechanism that rotates in association with the reciprocating movement of the holder.

In the vicinity of the cutting position of the roll paper, there is usually provided a pressing means that presses the roll paper against the surface of the fixed blade when cutting the roll paper and presses it so as not to shift the position when cutting. . That is, the vicinity of the cutting position of the roll paper is in a relatively free state, and when sheared by the recording paper cutting device, shearing force acts on the vicinity of the cutting position of the roll paper to bend or twist the roll paper. Since there is a risk of rotation and misalignment, the holding means is provided in order to reduce the risk.

[0005]

However, in a recording paper cutting device having a structure in which the movable blade abuts from the non-recording surface side of the recording paper to cut the recording paper, the recording surface of the roll paper is cut by the pressing means at the time of cutting. It will be pressed against the fixed blade. Therefore, when the ink on the recording surface is not sufficiently dried, the ink may be transferred to the fixed blade. When such transfer occurs, the ink transferred to the fixed blade is redeposited on the recording surface of the roll paper in the next cutting, which causes a problem that the quality of the recording surface is deteriorated.

An object of the present invention is a recording paper cutting device having a structure in which a moving blade abuts from the non-recording surface side of the recording paper and cuts the recording paper. An object of the present invention is to provide a recording paper cutting device in which the ink on the recording surface is less likely to be transferred to the fixed blade even when pressed. Another object is to provide a recording device provided with such a recording paper cutting device.

[0007]

In order to achieve the above object, a recording paper cutting device according to the invention of claim 1 has a fixed blade elongated in the width direction of the recording paper and reciprocating in the width direction. A recording paper cutting device comprising a movable movable blade, for shearing a cutting position of the recording paper conveyed on a recording paper conveyance path by the fixed blade and the movable blade, wherein the recording of the fixed blade is performed. A pressing portion that presses and clamps the vicinity of the cutting position of the recording paper is provided on the surface facing the paper, and ink is transferred from the recording surface to the facing surface of the fixed blade when the recording surface contacts the recording surface. It is characterized in that a transfer-preventing layer is provided to prevent such a phenomenon.

According to the present invention, a transfer prevention layer is provided on the surface of the fixed blade facing the recording paper to prevent the transfer of ink from the recording surface when the recording paper comes into contact with the recording surface. Therefore, the moving blade is a recording paper cutting device configured to abut and cut from the non-recording surface side of the recording paper, and the recording surface of the recording paper is pressed against the fixed blade by the pressing portion at the time of cutting. Also, the risk that the ink on the recording surface is transferred to the fixed blade can be reduced. Therefore, it is possible to prevent the ink transferred to the fixed blade from re-adhering to the next recording surface at the time of the next cutting, thereby preventing the quality of the recording surface from being deteriorated due to the cutting operation.

According to a second aspect of the present invention, in the recording paper cutting device according to the first aspect, the transfer prevention layer is made of a silicone layer. According to the present invention, since the transfer prevention layer is composed of the silicone layer, the ink transfer prevention function is stably exhibited with time based on the physical properties of the water repellent property and the excellent chemical resistance. still,
Examples of the transfer prevention layer include, in addition to the silicone layer, those formed by coating or tape attachment using polytetrafluoroethylene (PTFE) as a material.

The invention according to claim 3 of the present application is the recording paper cutting device according to claim 1 or 2, wherein the pressing portion holds the recording paper at one point in the width direction. It is characterized by Here, sandwiching at one point in the invention of the present application does not mean that the sheet is sandwiched over the entire width of the recording paper, and that the entire width of the recording paper does not have a plurality of sandwiching portions.
This means that there is only one nipping portion that nips the recording paper in a surface contact state with the recording paper with a minimum contact area that can obtain a nipping force capable of nipping the recording paper. is there.

As described above, since the vicinity of the cutting position of the recording paper is sandwiched at one point, the recording paper can be sandwiched without applying an uneven clamping force near the cutting position of the recording paper. As a result, it is possible to prevent the recording paper from bending and twisting when the recording paper is sheared, and to reduce the possibility of slippage between the recording paper pinching means and the recording paper due to the shearing force. Further, even if the recording paper is firmly sandwiched at one point as described above, since the fixed blade is provided with the transfer prevention layer, it is possible to prevent the ink from being transferred to the fixed blade.

According to a fourth aspect of the present invention, in the recording sheet cutting apparatus according to any one of the first to third aspects, in the recording sheet cutting apparatus, the movable blade has the width. The recording paper is moved from one end side to the other end side in the width direction to shear the recording paper from the one end side in the width direction, and the pressing portion is the width direction which is the cutting end position of the recording paper. The recording paper is sandwiched near the other end side of the.

Since the recording paper is pinched near the cutting end point position of the recording paper in this way, until the cutting of the recording paper is completed,
It is possible to maintain the state that the recording paper is nipped. This makes it possible to perform stable cutting of the recording paper even near the cutting end point position of the recording paper.

According to a fifth aspect of the present invention, in the recording sheet cutting device according to any one of the first to fourth aspects, the pressing portion of the pressing portion holds the recording sheet. It is characterized in that it has a mechanism interlocked with the movement of the movable blade so that the recording paper is pinched while being moved to be cut, and the recording paper is not pinched after the cutting is completed.

According to the present invention, the movable blade starts to move to cut the recording paper and nips the recording paper. After the cutting, the recording paper is in the non- nipping state, so that the recording paper nipping means conveys the recording paper. There is no risk of disturbing the operation and the discharging operation. As a result, it is possible to prevent the recording paper from being conveyed and discharged while the recording paper is being held. In the reciprocating motion of the moving blade, in the recording paper cutting device configured to cut in only one direction, after cutting the recording paper, when the moving blade moves in the other direction and returns to the initial position, The recording paper cutting device is configured to release the nipping, and in the bidirectional cutting device, the nipping of the recording paper is released when the movable blade reaches the vicinity of the end of the movable range after the cutting is completed. .

The invention according to claim 6 of the present application is the recording paper cutting apparatus according to any one of claims 1 to 5, wherein the pressing portion is interlocked with the movement of the movable blade. The movable blade starts moving to cut the recording paper, and the pressing portion rises to sandwich the recording paper between the fixed blade and the fixed blade. It is characterized by

According to the present invention, the pressing portion is moved upward to sandwich the recording paper between the fixed blade arranged in parallel with the recording paper. It is possible to pinch the vicinity and press the cut portion of the recording paper against the shearing surface of the fixed blade. As a result, the action and effect that the fixed blade and the movable blade can shear the cutting position of the recording paper more smoothly can be obtained.

According to a seventh aspect of the present invention, in the recording paper cutting device according to the sixth aspect, the recording sheet cutting device is arranged on substantially the same line in the width direction as the holding portion, and the holding portion rises. In order to ascend and make the vicinity of the cutting position of the recording paper substantially horizontal, there is provided a supporting portion for supporting the recording paper from below in a non-sandwiched state.

According to the present invention, since the vicinity of the cutting position of the recording paper is supported substantially horizontally from below by the supporting unit which moves up and down together with the pressing unit, the cutting position due to the oblique inclination of the vicinity of the cutting position of the recording paper. It is possible to reduce the risk of misalignment of the recording paper and catching of the recording paper. As a result, it is possible to obtain the effect that the recording paper can be cut more accurately and stably.

The invention according to claim 8 of the present application is the recording paper cutting device according to claim 7, wherein the pressing portion and the support portion are located outside the recording paper conveyance path when descending. In addition, it is characterized in that it is configured so as to project into the recording paper conveyance path when rising.

According to the present invention, when the pressing portion and the supporting portion are descending, that is, when the recording paper is in the non-sandwiched state,
Since the pressing portion and the supporting portion are located outside the recording paper conveyance path along which the recording paper is conveyed, there is no risk that the pressing portion and the supporting portion interfere with the conveyance of the recording paper. As a result, it is possible to eliminate the possibility that the recording paper being conveyed is caught by the pressing portion and the supporting portion and the paper is jammed.

A recording apparatus according to the invention of claim 9 of the present application comprises a recording section for executing recording on a recording sheet, a recording sheet conveying section for feeding the recording sheet to the recording section, and a downstream side of the recording section. A recording apparatus provided with a recording sheet cutting device configured to cut the cutting position of the recording sheet from the non-recording surface side of the recording sheet, wherein the recording sheet cutting device is any one of claims 1 to 8. Or the recording paper cutting device described in item 1.

According to the present invention, in a recording apparatus equipped with a recording paper cutting device configured to cut the cutting position of the recording paper from the non-recording surface side of the recording paper, the pressing surface causes the recording surface of the recording paper to have the aforementioned recording surface. Even if it is pressed against the fixed blade, it is possible to reduce the risk that the ink on the recording surface is transferred to the fixed blade, and as a result, it is possible to prevent deterioration of the recording quality due to the cutting operation of the recording apparatus.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic perspective view showing an embodiment of an ink jet type recording apparatus as a "recording apparatus" according to the present invention, and FIG. 2 is a side view of the main part thereof.

The ink jet type recording apparatus 50 has a carriage guide shaft 51 as recording means for executing recording on recording paper such as plain paper, photo exclusive paper, or roll paper P formed by winding a long recording paper in a roll shape. A carriage 61 that is pivotally supported on the carriage and moves in the main scanning direction X is provided. A recording head 62 that carries out recording by ejecting ink onto a recording paper is mounted on the carriage 61. A platen 52 that faces the recording head 62 and defines a distance (paper gap, hereinafter referred to as “PG”) between the head surface 62 a of the recording head 62 and the recording paper is provided. Then, the carriage 61 is conveyed in the main scanning direction X, and while the recording paper is conveyed between the carriage 61 and the platen 52 in the sub scanning direction Y, ink is ejected from the head surface 62a of the recording head 62 onto the recording paper. Recording is performed on recording paper.

Further, the ink jet type recording apparatus 50 has a structure capable of feeding cut sheets such as plain paper and photo exclusive paper, and has an automatic sheet feeder (not shown) (not shown). ASF ") is provided. The ASF is an automatic paper feed mechanism having a paper feed roller, a separation pad, and the like, which are not shown. Due to the rotational driving force of the paper feed roller and the frictional resistance of the separation pad, the paper feed tray 5
When a plurality of recording papers placed on the sheet 7 are fed, the plurality of recording papers are not fed at one time, but are automatically fed one by one accurately.

Further, the ink jet recording apparatus 50 is provided with a conveyance driving roller 53 and a conveyance driven roller 54 as recording paper conveying means for intermittently conveying the fed recording paper in the sub scanning direction Y. . Transport drive roller 53
Is controlled by a rotation driving force source, and the recording sheet is conveyed in the sub-scanning direction Y by the rotation of the conveyance driving roller 53. A plurality of transport driven rollers 54 are provided, each of which is biased by the transport drive roller 53, and when the recording paper is transported by the rotation of the transport drive roller 53, contacts the recording paper and is driven by the transport of the recording paper. And then rotate.

Further, the ink jet type recording apparatus 50 is provided with a sheet discharge driving roller 55 and sheet discharge driven rollers 56, 56 as means for discharging the recorded recording sheet. The paper ejection drive roller 55 is rotationally controlled by the rotational drive force source, and the recording paper is ejected in the sub-scanning direction Y by the rotation of the paper ejection drive roller 55. Paper ejection driven rollers 56, 56
Is a toothed roller which is provided in plural on the paper discharge frame 63 and has a plurality of teeth in the periphery thereof, and the tips of the teeth are sharply pointed so as to make point contact with the recording surface of the recording paper.

The paper discharge driven rollers 56 located on the downstream side in the sub-scanning direction Y are individually discharged from the paper discharge drive rollers 5.
5, when the recording paper is ejected by the rotation of the paper ejection drive roller 55, the recording paper is urged by an urging force weaker than the urging force of the transport driven roller 54, and the recording paper comes into contact with the recording paper and follows the ejection of the recording paper. Rotate. The other paper-discharging driven roller 56 (positioned on the upstream side in the sub-scanning direction Y) does not form a pair with the paper-discharging driving roller 55, and independently makes light contact with the recording surface of the recording paper to perform recording. Softly prevents the floating of the paper.

In this embodiment, the PG restricting portion 611 formed on the carriage 61 is in sliding contact with the upper surface of the discharge frame 63, and the height of the carriage 61 is restricted to restrict the PG restricting surface. Has become.

Further, the ink jet recording apparatus 50
Is equipped with a roll paper holder 59 that can be attached to and detached from the paper feed tray 57. In the ink jet recording apparatus 50, the roll paper P set in the roll paper holder 59 is set to the above-mentioned A
By SF, it automatically feeds like a single-cut recording paper,
The roll paper P that is automatically fed has a configuration capable of executing recording.

On the downstream side of the paper discharge driven roller 56 in the sub-scanning direction Y, a paper discharge auxiliary roller 41 is axially supported so as to be driven and rotatable. The paper ejection auxiliary roller 41, like the paper ejection driven roller 56, has a plurality of teeth in the periphery thereof, and a toothed roller in which the tips of the teeth are sharply pointed so as to make point contact with the recording surface of the recording paper. Has become. Then, the discharge assisting roller 41 is applied to the recording surface of the roll paper P with a weak biasing force by the biasing force of the rod spring that pivotally supports the discharge assisting roller 41 when contacting the recording surface of the roll paper P. In the energized state, the roll paper P is driven to rotate and is rotated.

A fixed blade 1 constituting a roll paper cutter as a "recording paper cutting device" according to the present invention and a round blade as a "moving blade" are provided downstream of the paper discharge auxiliary roller 41 in the sub-scanning direction Y. 2 and a holder 21 which rotatably supports the round blade 2 and is reciprocally movable in the main scanning direction X. The holder 21 is disposed on a guide plate 23 elongated in the main scanning direction X so as to reciprocate in the main scanning direction X, and is attached to a rotating endless belt 22 to which the rotational driving force of a rotational driving force source such as a motor is transmitted. Endless belt 2 when attached
It is configured to reciprocate in the sub-scanning direction Y by the rotation of 2.

On the downstream side of the holder 21, a discharge driving roller 42 and a discharge driven roller 4 are provided as means for finally discharging the cut paper or the cut roll paper P to the discharge tray 58.
3 are provided. The discharge drive roller 42 and the discharge driven roller 43 have substantially the same configuration as the above-described discharge drive roller 55 and the discharge driven roller 56, and the cut roll paper P is discharged from the discharge drive roller 42 and the discharge driven roller 56. It is discharged to the discharge tray 58 by the rotation driving force of the discharge driving roller 42 while being sandwiched by the roller 43. Further, when the roll paper P is cut by the roll paper cutter, the discharge drive roller 42 and the discharge driven roller 43 sandwich and hold the roll paper P on the downstream side in the sub-scanning direction Y.

Between the paper discharge drive roller 55 and the fixed blade 1, a paper discharge guide path 44 for guiding the discharged cut paper or roll paper P is arranged. At the lower part of the paper discharge guide path 44, a swinging member 11 as a “recording paper sandwiching means” constituting a roll paper cutter as a “recording paper cutting device” according to the present invention can swing on a shaft 64. Is axially supported and disposed. The swing member 11 is biased by the torsion coil spring 12 so as to swing in the swing direction indicated by the arrow A. The swinging member 11 has a shape having a holding portion 13, and a non-slip member 14 having a high friction resistance such as a rubber member is attached to an upper surface portion of the holding portion 13. When the roll paper P is cut by the roll paper cutter, the swing member 11 swings in the direction indicated by the arrow A, and the pressing portion 13 causes the roll paper P near the cutting position.
Is pressed against the fixed blade 1 so as to be pushed upward, and the roll paper P near the cutting position is pinched.

On the surface of the fixed blade 1 facing the recording paper, there is provided a transfer prevention layer 80 for preventing transfer of ink from the recording surface when the recording paper comes into contact with the recording surface. In the present embodiment, the transfer-preventing layer 80 is formed of a silicone layer, which allows the ink transfer-preventing function to be stably exhibited over time based on the physical properties of silicone which is excellent in water repellency and chemical resistance. To be done. Examples of the transfer prevention layer 80 include, in addition to the silicone layer, those formed by coating or tape attachment using polytetrafluoroethylene (PTFE) as a material.

By providing this transfer prevention layer 80,
A recording paper cutting device having a structure in which a round blade (2) as a moving blade is in contact with and cuts from a non-recording surface side of the recording paper, and the recording surface of the recording paper is cut by the pressing portion (13) at the time of cutting.
Even if the ink is pressed against, it is possible to reduce the risk that the ink on the recording surface will be transferred to the fixed blade 1. Therefore, the fixed blade 1
It is possible to prevent the ink transferred to the recording medium from re-adhering to the next recording surface at the time of the next cutting, thereby preventing the quality of the recording surface from being deteriorated due to the cutting operation.

Further, on the downstream side of the paper discharge guide path 44 in the sub-scanning direction Y, a guide plate 45 constituting a roll paper cutter as a "recording paper cutting device" according to the present invention is provided with a rotation of the discharge drive roller 42. It is pivotally supported on the shaft. In the swing position shown in FIG. 2, the guide plate 45 guides the roll paper P conveyed through the paper discharge guide path 44 to the nip position of the discharge drive roller 42 past the cutting position of the roll paper cutter. . When the roll paper P is cut, the roll paper P is swung in the swing direction indicated by the arrow B, and retracted from the reciprocating path of the holder 21.

FIG. 3 is a side view of the main part of the ink jet recording apparatus 50 shown in FIG. 2, showing a state in which the roll paper P near the cutting position is held. Roll paper P
When the holder 21 starts moving in the main scanning direction X in order to cut, the swinging member 11 starts swinging in the direction indicated by the symbol A by a cam mechanism (described later) interlocked with the movement of the holder 21, and the pressing portion is pressed. As shown in FIG. 13, the transfer prevention layer 8 of the fixed blade 1 is provided so as to push the roll paper P near the cutting position upward.
The roll paper P in the vicinity of the cutting position is pinched by pressing it against 0. Further, the guide plate 45 starts to swing in the direction indicated by the arrow B and is retracted from the movement path of the holder 21 by the cam mechanism which is also linked to the movement of the holder 21.

The roll paper P is sheared by the fixed blade 1 and the round blade 2 which reciprocates while rotating by a rotating mechanism (not shown). Roll paper P on the sheared side
Is discharged in the sub-scanning direction Y toward the discharge tray 58 (FIG. 1) by the discharge drive roller 42 and the discharge driven roller.

FIG. 4 is a front view of a main portion of a roll paper cutter as a "recording paper cutting device" according to the present invention, showing a state before the holder 21 starts to move.
FIG. 5 shows a state in which the holder 21 has started to move from the state shown in FIG. FIG. 6 is a perspective view of a main part of a roll paper cutter as a “recording paper cutting device” according to the present invention, showing a state in which the holder 21 has moved to a position where it finishes cutting the roll paper P. .

The endless belt 22 is arranged between the drive pulley 22a and the driven pulley 22b, and the rotational driving force of a motor (not shown) is transmitted to the drive pulley 22a via a gear mechanism or the like, so that the drive pulley 22a is It rotates by rotating. The holder 21 is attached to a part of the endless belt 22 and is disposed on the guide plate 23 so as to reciprocate in the main scanning direction X.
Is rotated to reciprocate in the main scanning direction X.

The oscillating member 11 is urged in the oscillating direction indicated by the arrow A by the two torsion coil springs 12. Further, the two torsion coil springs 12 are contracted at both ends of the swing member 11 as shown in the figure, and also play a role of preventing rattling of the swing member 11 in the main scanning direction X. The swing member 11 includes the cam follower portion 1 of the cam mechanism.
6 are provided. The swinging member 11 is in a swinging position shown in the figure, that is, in a state in which the pressing portion 13 is lowered to a position retracted from the discharge guide path 44 in a state where the cam follower portion 16 is pushed by the cam portion 25 of the holder 21. It is in the swing position.

Further, in the present embodiment, the pressing portion 13 is arranged only at one point (one place) which sandwiches the vicinity of the cutting end position of the cutting position of the roll paper P. further,
A supporting portion 15 is formed on the swinging member 11, and the supporting portion 15 moves up and down by swinging of the swinging member 11, like the pressing portion 13. In the present embodiment, the support portions 15 are formed at four locations at substantially equal intervals as shown in the figure.

To sandwich the recording paper at one point does not mean that the recording paper is sandwiched over the entire width of the recording paper, and that the recording paper does not have a plurality of sandwiching portions. This means that there is only one nipping portion for nipping the recording paper in a state of being in surface contact with the recording paper with a minimum contact area that can obtain a nipping force that can be nipping.

Since the vicinity of the cutting position of the recording paper is sandwiched at one point in this manner, the recording paper can be sandwiched without applying an uneven clamping force near the cutting position of the recording paper. Further, even if the recording paper is firmly sandwiched at one point as described above, the fixed blade 1 is provided with the transfer prevention layer 80, so that the fixed blade 1 does not receive ink from the recording surface of the recording paper. It is possible to prevent transfer.

From the state shown in FIG. 4, when the holder 21 starts moving in the direction indicated by the arrow C to cut the roll paper P, as shown in FIG. 5, the cam follower portion 16 is moved.
Since the cam portion 25 of the holder 21 separates from the swing member 1,
1 is a code A by the urging force of the torsion coil spring 12.
It swings in the swinging direction indicated by the arrow. As a result, the pressing portion 13 and the supporting portion 15 ascend so as to project into the paper discharge guide path 44. The pressing portion 13 pushes up the roll paper P so as to press it against the fixed blade 1, and the roll paper P is separated from the transfer prevention layer 80 of the fixed blade 1 and the anti-slip member 14 attached to the pressing surface of the pressing portion 13. Sandwiched between.
The support portion 15 pushes the roll paper P upward,
The posture of the roll paper P in the vicinity of the cutting position in the non-sandwiched state is regulated to be substantially horizontal.

As described above, neither the entire width of the roll paper P is clamped, nor is it clamped at a plurality of clamping portions in the entire width of the roll paper P, and the clamping force capable of clamping the roll paper P is obtained. Since the roll paper P is pinched at only one place while being in surface contact with the roll paper P with the smallest possible contact area, the roll paper P can be rolled without uneven clamping force in the vicinity of the cutting position. The paper P can be pinched. As a result, it is possible to prevent the roll paper P from bending and twisting when the roll paper P is sheared, and reduce the risk of slippage between the pressing portion 13 and the roll paper P due to the shearing force.

Further, since the roll paper P is pinched near the cutting end point position of the roll paper P, the state in which the roll paper P is pinched can be maintained until the cutting of the roll paper P is completed. Further, since the vicinity of the cutting position of the roll paper P is supported substantially horizontally by the support portion 15, there is a risk that the cutting position is displaced or the roll paper P is caught due to the vicinity of the cutting position of the roll paper P being obliquely inclined. Can be reduced. Further, when the pressing portion 13 and the supporting portion 15 are descending, that is, when the roll paper P is in the non-sandwiched state, the pressing portion 13 and the supporting portion 15 are arranged in the discharge guide path 44 through which the roll paper P is conveyed. Since it is located outside, the pressing portion 13 and the supporting portion 15 do not hinder the conveyance of the roll paper P.

FIG. 7 is a perspective view of a main part of a roll paper cutter as a “recording paper cutting device” according to the present invention, showing a state of the guide plate 45 before the holder 21 starts to move.

In the state before the holder 21 starts to move, the guide plate 45 is positioned on the movement path of the holder 21 as shown in the figure, and the roll paper P conveyed through the paper discharge guide path 44 is fixed blade. Induce to a shear plane of 1. A cam follower portion 46 is attached to the guide plate 45, and the cam portion 26 of the holder 21 constitutes a cam mechanism for swinging the guide plate 45. In addition, the guide plate 45 is formed by a torsion coil spring 47 attached to the cam follower portion 46.
It is biased in the swinging direction indicated by the arrow B.

FIG. 8 is a perspective view of a main part of a roll paper cutter as a “recording paper cutting device” according to the present invention, showing a state where the holder 21 starts to move from the state shown in FIG. is there.

From the state shown in FIG. 7, when the holder 21 starts to move in the direction indicated by the arrow C to cut the roll paper P, as shown in FIG.
Since the cam portion 26 of the holder 21 separates from the swing member 1,
1, the guide plate 45 swings in the swinging direction indicated by the arrow B so as to retract from the movement path of the holder 21 by the urging force of the torsion coil spring 47.

In this way, the guide plate 45 that guides the roll paper P past the fixed blade 1 toward the nip position of the discharge drive roller 42 is used when the roll paper P is cut.
Since the holder 21 is retracted from the movement path in association with the movement of the holder, the movement of the holder 21 is not hindered.

9 to 11 are perspective views of a main part of a roll paper cutter as a "recording paper cutting device" according to the present invention, which is an enlarged view of the vicinity of the cutting position of the roll paper P. As shown in FIG.

FIG. 9 shows the state before cutting, in which the holder 21 moves in the direction indicated by the arrow C and the circular blade 2 rotates in the direction of rotation indicated by the arrow D. While approaching the side edge of the roll paper P. The round blade 2 rotates in conjunction with the movement of the holder 21 by a rotation mechanism (not shown). The holder 21 has a restriction part 2 so that the round blade 2 is located between the fixed blade 1 and the restriction part 24.
4 are formed. The regulation portion 24 has a shape having a slope 24a and a regulation surface 24b. In the vicinity of the cutting position, the inclined surface 24a guides the roll paper P on the side opposite to the fixed blade 1 across the round blade 2 to the regulation surface 24b, and the regulation surface 24b.
Regulates the posture of the roll paper P on the opposite side of the fixed blade 1 with the round blade 2 sandwiched therebetween to be substantially horizontal.

FIG. 10 shows a state immediately before cutting. The holder 21 further moves in the direction indicated by the arrow C, and the roll paper P on the opposite side of the fixed blade 1 with the round blade 2 interposed therebetween.
Is due to the slope 24a formed on the restriction portion 24,
It is guided to the regulation surface 24b. And the regulation surface 24b
The orientation of the roll paper P near the cutting position is
And the regulation surface 24b of the regulation portion keep the surface substantially horizontal.
FIG. 11 is an enlarged view showing the vicinity of the cutting position of the roll paper P being cut. The holder 21 further moves in the direction indicated by the arrow C, and the roll paper P is regulated substantially horizontally by the fixed blade 1 and the regulation surface 24b. The gap between them is sheared by the fixed blade 1 and the round blade 2 which rotates in the direction indicated by the arrow D.

As described above, the regulating portion 2 for regulating the posture of the roll paper P in the vicinity of the cutting position immediately before shearing to be substantially horizontal.
Since 4 is formed in the holder 21, it is possible to reduce the risk of deviation of the cutting position and catching of the roll paper P due to the inclination of the vicinity of the cutting position of the roll paper P immediately before shearing.

Further, since the regulation portion 24 is formed on the holder 21 so that the round blade 2 is located between the fixed blade 1 and the regulation portion 24, both sides of the round blade 2 are regulated to the fixed blade 1 and the regulation portion 24, respectively. The roll paper P in the vicinity of the cutting position can be sheared while the posture is regulated substantially horizontally with the regulation surface 24b of the portion 24. That is, on both sides of the cutting position where the round blade 2 moves,
Since the posture of the roll paper P is regulated substantially horizontally, the posture of the roll paper P near the cutting position is regulated substantially horizontally with a stronger regulation force against the shearing force acting on the cutting position of the roll paper P. be able to.

In this way, according to the roll paper cutter as the “recording paper cutting device” of the present invention shown in the embodiment, the roll paper P when shearing the roll paper P is used.
The bending and twisting of the roll paper P can be prevented, and the possibility of slippage between the recording paper pinching means and the roll paper P due to the shearing force can be reduced, so that the paper jam due to the shearing force when the roll paper P is sheared. It is possible to reduce the risk that the recording quality will deteriorate.

Further, as another embodiment, in addition to the above-described one embodiment, the regulating surface 24b of the regulating portion 24 formed on the holder 21 regulates the posture of the roll paper P immediately after cutting to be substantially horizontal. One of the shapes is a shape.

FIG. 12 is a perspective view of essential parts showing another embodiment of the roll paper cutter as the "recording paper cutting device" according to the present invention.

As described above, since the regulation surface 24b is formed longer than the round blade 2 in the rear side in the cutting direction, the posture of the roll paper P immediately after cutting can be regulated substantially horizontally. Then, it is possible to reduce the influence of the inclination of the roll paper P immediately after cutting on the posture of the roll paper P immediately before cutting, so that the roll paper P can be cut more stably.

The invention of the present application is not limited to the above embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the invention of the present application. Needless to say.

[0066]

According to the present invention, a transfer prevention layer is provided on the surface of the fixed blade facing the recording paper to prevent the transfer of ink from the recording surface when the recording paper comes into contact with the recording surface. Is provided, the moving blade comes into contact with the non-recording surface side of the recording paper to cut the recording paper, and the pressing surface presses the recording surface of the recording paper against the fixed blade at the time of cutting. Even if this happens, the risk of the ink on the recording surface being transferred to the fixed blade can be reduced. Therefore, it is possible to prevent the ink transferred to the fixed blade from re-adhering to the next recording surface at the time of the next cutting, thereby preventing the quality of the recording surface from being deteriorated due to the cutting operation.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an embodiment of an ink jet recording apparatus as a “recording apparatus” according to the present invention.

FIG. 2 is a side view of essential parts showing an embodiment of an ink jet recording apparatus as a “recording apparatus” according to the present invention.

FIG. 3 is a side view of an essential part showing an embodiment of an ink jet type recording apparatus as a “recording apparatus” according to the present invention, showing a state in which roll paper near a cutting position is sandwiched.

FIG. 4 is a front view of a main part of a roll paper cutter as a “recording paper cutting device” according to the present invention, showing a state before the holder starts to move.

5 is a front view of a main part of a roll paper cutter as a “recording paper cutting device” according to the present invention, showing a state where the holder has started to move from the state shown in FIG.

FIG. 6 is a perspective view of a main part of a roll paper cutter as a “recording paper cutting device” according to the present invention, showing a state in which the holder has moved to a position where it finishes cutting the roll paper.

FIG. 7 is a perspective view of a main part of a roll paper cutter as a “recording paper cutting device” according to the present invention, showing a state of the guide plate before the holder starts to move.

FIG. 8 is a perspective view of a main part of a roll paper cutter as a “recording paper cutting device” according to the present invention, showing a state where the holder has started to move from the state shown in FIG. 7.

FIG. 9 is a perspective view of a main part of a roll paper cutter as a “recording paper cutting device” according to the present invention, showing an enlarged view of the vicinity of the cutting position of the roll paper before cutting.

FIG. 10 is a perspective view of an essential part of a roll paper cutter as a “recording paper cutting device” according to the present invention, showing an enlarged view of the vicinity of the cutting position of the roll paper immediately before cutting.

FIG. 11 is a perspective view of an essential part of a roll paper cutter as a “recording paper cutting device” according to the present invention, showing an enlarged view of the vicinity of the cutting position of the roll paper being cut.

FIG. 12 is a perspective view of essential parts showing another embodiment of a roll paper cutter as a “recording paper cutting device” according to the present invention.

[Explanation of symbols]

1 fixed blade 2 round blade 11 Swing member 13 Holding part 14 Anti-slip part 15 Support 16,46 Cam follower section 21 Holder 24a slope 24b Regulatory aspect 25, 26 Cam section 42 Discharge drive roller 43 Discharge driven roller 45 guide plate 50 inkjet recording device 51 Carriage guide shaft 55 Paper ejection drive roller 56 Ejection driven roller 57 paper tray 58 output tray 80 Transfer prevention layer

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI Theme Coat (reference) B65H 35/04 B65H 35/04 H04N 1/00 108 H04N 1/00 108N (72) Inventor Kagami Nagano 3-5 Yamato 3-chome, Suwa, Japan S-Epson Co., Ltd. F-term (reference) 2C058 AB18 AC07 AC11 AD01 AD03 AD04 AE04 AE09 AF06 AF20 AF23 AF25 AF31 AF51 AF63 LA03 LA13 LA36 LB10 LB22 LB36 LC02 LC12 3C027 RR09 A02 5C08A02 AB34 AD06 BA06

Claims (9)

[Claims] 1. A fixed blade that is long in the width direction of the recording paper, and a movable blade that can reciprocate in the width direction. The fixed blade and the movable blade convey the recording paper along a recording paper conveyance path. A recording paper cutting device for shearing the cutting position of the recording paper, comprising a pressing portion that presses and clamps the vicinity of the cutting position of the recording paper on the surface of the fixed blade facing the recording paper. A recording paper cutting device, wherein a transfer prevention layer is provided on the facing surface to prevent transfer of ink from the recording surface when the recording paper comes into contact with the recording surface. 2. The transfer prevention layer according to claim 1,
A recording paper cutting device comprising a silicone layer. 3. The recording paper cutting device according to claim 1 or 2, wherein the pressing portion holds the recording paper at one point in the width direction. 4. The recording paper cutting device according to claim 1, wherein the movable blade moves from one end side in the width direction to the other end side, and the one end in the width direction. The recording paper is sheared from the side, and the pressing portion is configured to sandwich the recording paper near the other end side in the width direction which is the cutting end position of the recording paper. Characteristic recording paper cutting device. 5. The pressing unit according to any one of claims 1 to 4, wherein the moving blade starts moving to cut the recording paper, nips the recording paper, and after the cutting, A recording paper cutting device, characterized in that it has a mechanism interlocked with the movement of the movable blade so that the recording paper is in a non-nipped state. 6. The pressing unit according to claim 1, wherein the pressing unit is configured to be vertically movable in association with the movement of the movable blade, and the movable blade cuts the recording paper. As soon as it starts moving, the pressing part rises,
A recording paper cutting device, wherein the recording paper is sandwiched between the fixed blade and the fixed blade. 7. The pressing member according to claim 6, wherein the pressing member is arranged substantially on the same line in the width direction, and the pressing member is moved upward as it is raised to make the vicinity of the cutting position of the recording paper substantially horizontal. A recording paper cutting device, comprising: a supporting portion that supports the recording paper from below in a non-sandwiched state. 8. The structure according to claim 7, wherein the pressing portion and the support portion are located outside the recording paper conveyance path when descending and protrude into the recording paper conveyance path when rising. A recording paper cutting device characterized by the above. 9. A recording section for executing recording on a recording sheet, a recording sheet conveying section for feeding the recording sheet to the recording section, and a cutting position of the recording sheet provided on the downstream side of the recording section for non-recording of the recording sheet. A recording paper cutting device configured to cut from a surface side, wherein the recording paper cutting device is the recording paper cutting device according to any one of claims 1 to 8. A recording device characterized by.