JP2002226108A - Delivery driven roller mounting device and recording device having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly determine the pressing force of a pressing means for pressing a recorded member by a delivery driven roller under a simple and proper condition to properly execute the delivering operation. SOLUTION: A frame member 62 is mounted on a delivery frame 68, and a rotating member 64 is mounted on the frame member 62 rotatably on a rotating shaft 64b. The delivery driven roller 63 is mounted on the rotating member 64b, and is separated from and abutted on a delivery driving roller 55 by the rotation of the rotating member 64b. An extension coil spring 65 is hung between the rotating member 64b and the frame member 62a, and the contact force to the delivery driving roller 55 of the delivery driven roller 63 can be determined by changing a spring constant of the extension coil spring 65.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium in which a recording material is nipped with a paper discharge drive roller which is driven to rotate and is rotated in accordance with a recording material discharging operation. The present invention relates to a discharge driven roller mounting device for mounting a plurality of discharge driven rollers across the discharge roller so that each of the driven driven rollers can be independently displaced in a direction away from and close to the discharge drive roller. Further, the present invention relates to a recording apparatus for recording on a recording material, comprising the discharge driven roller attaching apparatus.

[0002]

2. Description of the Related Art In a recording apparatus typified by a facsimile, a printer, or the like, a discharge roller for discharging a recording material on which recording has been performed in a recording section to a discharge stacker or the like is provided downstream of the recording section (recording section). Downstream from the direction of travel of the material). Further, the paper discharge roller for discharging such a recording material is provided not only near the downstream side of the recording unit but also near the downstream side of a cutter device for cutting a long recording material at a predetermined position. May be

The paper discharge roller includes a paper discharge drive roller that is rotated and driven by a drive motor, and a paper discharge driven roller that nips a recording material between the paper discharge drive roller and the paper discharge driven roller. The recording material is mounted so as to be displaceable in a direction in which the recording material can be pressed toward the discharge drive roller so as to separate from and press against the discharge drive roller, and is provided so as to be able to press against the discharge drive roller by pressing means. I have.

FIG. 10 shows an example of such a paper ejection driven roller mounting apparatus according to the prior art. Reference numeral 90 denotes a paper ejection driven roller, and reference numeral 91 denotes a bar spring for urging the paper ejection driven roller 90. Is shown. The bar spring 91 rotatably supports the paper discharge driven roller 90, and the paper discharge driven roller 90 is rotatably mounted on the bar spring 91, and rotates in contact with the discharged recording material. It has become. The discharged recording material is nipped between a discharge drive roller (not shown) and a discharge driven roller 90, and is discharged in the discharge direction by the rotation of the discharge drive roller. Therefore, for example, in a case where a recording material causes a cockling (undulation) phenomenon in an ink jet recording apparatus and thereby attempts to be displaced in a direction of rising from a paper ejection drive roller (not shown), The pressing force is applied so as to be pressed from the bar spring 91.

[0005]

However, in the prior art shown in FIG. 10, since the bar spring 91 serves also as a "rotation shaft" of the paper discharge driven roller 90 and a "pressing means", the spring 91 is used. In some cases, it is difficult to adjust the constant and it is difficult to set an appropriate pressing force according to the material of the recording material (the degree of cockling). Further, a configuration in which a bar spring is not used as the pressing means, that is, a discharge driven roller 90 is fixed to the discharge frame 92, and the discharge frame 90 itself is separated from or close to a discharge driving roller (not shown). There is also a configuration in which the paper discharge frame 92 is pressed toward a paper discharge drive roller (not shown) by a pressing means such as a tension coil spring, and the recording material is pressed in the same manner as described above. Was. However, in such a case, among the plurality of paper discharge driven rollers provided in the width direction of the recording material, the individual paper discharge driven rollers cannot be displaced independently, so that a part of the recording material is pressed. There is a possibility that the pressing force of the means acts intensively and damages the recording surface of the recording material.

Further, a similar problem occurs not only in the vicinity of the downstream side of a recording unit for performing recording on a recording material, but also in the case of being provided near the downstream side of a cutter device for cutting a recording material at a predetermined position. appear. That is, in the cutter device, the recording material is cut by the reciprocating motion of the recording blade in the width direction of the recording material. At this time, in the recording material, a portion near the cutter blade is displaced in the vertical direction during cutting. Therefore, the same problem as described above occurs.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide a discharge driven roller mounting apparatus for mounting a discharge driven roller, in which a discharge driven roller presses a recording material. Is to more easily set the pressing force to an appropriate state, so that an appropriate sheet discharging operation can be performed.

[0008]

According to a first aspect of the present invention, there is provided a paper ejection driven roller mounting apparatus for nipping a recording material between a paper ejection drive roller that is driven to rotate. A plurality of discharge driven rollers provided in the width direction of the recording material, which are driven and rotated in accordance with the discharging operation of the recording material,
A paper discharge driven roller mounting device for attaching each of the paper discharge driven rollers so as to be displaceable in a direction away from and close to the paper discharge drive roller, wherein a recording material is separated from the paper discharge drive roller. And a pressing unit for pressing the recording material toward the discharge driving roller by the discharge driven roller when displacing in the direction in which the recording medium is displaced, and the pressing unit includes a shaft supporting portion that supports the discharge driven roller. A rotation fulcrum provided at a position separated from the shaft support, and configured to rotate the rotation support about the rotation fulcrum, thereby separating the discharge driven roller from the paper discharge drive roller and approaching the paper discharge drive roller. It is characterized by comprising a supporting member and a tension coil spring for urging the shaft supporting member in a rotation direction in which the discharge driven roller approaches the discharge drive roller.

According to the invention of claim 1 of the present application, first,
A plurality of discharge driven rollers provided in the width direction of the recording material are individually mounted so as to be displaceable in a direction away from and close to the discharge driving roller. 3) The recording material can be pressed with an appropriate pressing force according to the state. Next, pressing means for pressing the paper discharge driven roller toward the paper discharge drive roller,
The discharge driven roller is constituted by a bearing member for pivotally supporting the discharge drive roller so as to be able to separate or approach the discharge drive roller, and a tension coil spring for urging the support member. It is possible to easily and easily set the pressing force at the time of pressing toward the paper driving roller, and thus it is possible to perform an appropriate paper discharging operation.

According to a second aspect of the present invention, there is provided a paper discharge driven roller mounting device, which is provided near a downstream side of a cutter device provided with a cutter blade capable of cutting a recording material at a predetermined position and reciprocating in a width direction of the recording material. A plurality of discharge driven rollers provided in the width direction of the recording material, which nip the recording material between the recording material and a discharge driving roller that is rotationally driven, and are driven and rotated in accordance with the discharging operation of the recording material. A paper driven driven roller mounting device for mounting each of the paper driven driven rollers individually so as to be displaceable in a direction away from and close to the paper discharge driving roller, wherein the driven driven roller is cut by the cutter blade. A pressing portion for pressing a portion of the recording material displaced in the vertical direction in the vicinity of the cutter blade toward the discharge drive roller, wherein the pressing portion supports the discharge driven roller; The shaft support A pivotal support member provided at a position separated from the pivotal support member, and a pivotal support member that separates and approaches the paper discharge driven roller by rotating around the pivotal support point with the paper discharge drive roller; The shaft support member may be formed of a tension coil spring that urges the discharge driven roller in a rotation direction close to the discharge drive roller. According to the second aspect of the present invention, in the case where the discharge driving roller and the discharge driven roller are provided near the downstream side of the cutter device for cutting the recording material at a predetermined position, the invention according to the first aspect of the present invention is provided. It is possible to obtain the same function and effect as described above. Here, the “downstream side” means a downstream side with respect to the traveling direction of the recording material.

According to a third aspect of the present invention, there is provided a discharge driven roller mounting device according to the first or second aspect, wherein the discharge driven roller is a star wheel having a gear shape for making a point contact with a recording material. There is a feature. According to the third aspect of the present invention, since the discharge driven roller is a star wheel in the form of a gear that makes point contact with the recording material, it is located near the downstream side of the recording unit in the ink jet recording apparatus. In this case, when the paper ejection driven roller is provided, the ink droplets can be prevented from re-adhering.

According to a fourth aspect of the present invention, there is provided a discharge driven roller mounting device according to the first or second aspect, wherein the discharge driven roller is an elastic roller having elasticity for making surface contact with a recording material. It is characterized by the following. According to the invention described in claim 4 of the present application, since the paper discharge driven roller is an elastic roller having elasticity that makes surface contact with the recording material, the paper ejection driven roller is elastically brought into contact with the recording material to thereby form the recording medium. There is no risk of damaging the recording surface of the recording material.

According to a fifth aspect of the present invention, there is provided a recording apparatus for rotating a discharge driving roller for discharging a recording material on which recording has been performed by a recording unit for performing recording on the recording material, and the discharging drive. 5. A nip of a recording material between a roller and a roller.
And a discharge driven roller mounted by the discharge driven roller mounting device according to any one of (1) to (4). According to the invention as set forth in claim 5 of the present application, in a recording apparatus provided with a recording unit for performing recording on a recording material, the same operation and effect as the above-described invention according to any one of claims 1 to 4 of the present invention are provided. It is possible to obtain.

According to a sixth aspect of the present invention, there is provided a recording device for recording on a recording material, and a recording material provided downstream from the recording portion and cutting the recording material at a predetermined position. Device having a cutter blade capable of reciprocating in a direction, a paper discharge drive roller pivotally driven near the downstream side of the cutter device, and a nip of the recording material between the paper discharge drive roller. A sheet discharge driven roller attached by the sheet discharge driven roller attachment device according to any one of items 1 to 4. According to the invention as set forth in claim 6 of the present application, in a recording apparatus including a recording unit that performs recording on a recording material and a cutter device that cuts the recording material at a predetermined position, the recording apparatus according to any one of claims 1 to 4 described above. It is possible to obtain the same operation and effect as the invention described in any one of the above.

The recording apparatus according to claim 7 of the present invention is directed to claim 6
And a discharge roller for discharging the recording material on which recording has been performed in the recording section, and feeding the recording material discharged by the discharge roller in a reversely curved shape having a substantially U-shape in side view. A feed path, and a second method for performing recording on the unrecorded surface of the recording material having the unrecorded surface facing upward due to the feed route.
Recording section, a second transport roller for transporting the recording material to the second recording section at a constant pitch, and a second discharge roller for discharging the recording material on which recording has been performed in the second recording section And characterized in that: According to the seventh aspect of the present invention, two recording units are provided above and below, and the recording material on which recording has been performed by one of the upper and lower recording units is reversed and curved, and the other recording unit, that is, the second recording unit The recording apparatus according to claim 1, wherein the recording is performed such that the unrecorded surface of the recording material is fed upward so that the unrecorded surface faces upward, and the recording is performed by the second recording unit. The same function and effect as the invention described in any one of the aspects can be obtained.

[0016]

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 includes a printing sheet (indicated 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 sheet on the front side of the same apparatus. And a substantially U-shaped feeding path in which the sheet feeding side and the sheet discharging side coincide with each other and are discharged from the central portion of the side. For the sake of convenience in the following description, the recording material wound in a roll shape is referred to as “roll R”, and the roll material is referred to as “roll R”.
The roll paper that has been fed out of the printer and is ready for printing or that has been printed is referred to as “roll paper P”.

In FIG. 1, reference numeral 1 denotes a roll paper cassette for setting the roll R, 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 right to left in FIG. 2) is bent upward at the rear of the apparatus to be curved upward and to the front side of the apparatus (right side in FIG.
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). The cut dust generated in the device 50 is
It falls from the window hole 101 (see FIG. 1) provided below B to the dust stacker 2c. on the other hand,
For the roll paper P on which printing as an object has been performed,
The cover 2 slides down the curved surface 2 a and is stacked on a discharge stacker 8 (not shown in FIG. 1) provided on the front side of the roll paper cassette 1. 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 indicates a first ink jet recording apparatus that performs printing on the roll paper P first (hereinafter, abbreviated as "first recording apparatus"), and reference numeral 102B indicates a second ink jet recording apparatus that performs printing on the roll paper P last. 1 illustrates an inkjet recording unit (hereinafter, abbreviated as “second recording device”).
The first recording device 102A includes a transport roller 1 including a transport drive roller 103a for transporting the roll paper P and a transport driven roller 103b pressed against the transport drive roller 103a.
03, a nozzle head 104a as a “recording unit” provided at the bottom of the carriage 104, and a nozzle head 1
A discharge roller 1 comprising a discharge drive roller 105a provided downstream of the sheet discharge roller 04a and a discharge driven roller 105b for nipping the roll paper P between the discharge drive roller 105a and the discharge drive roller 105a.
05.

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 to a. Carriage 1
Numeral 04 reciprocates in the main scanning direction (the direction perpendicular to the paper surface in FIG. 2) by a drive motor (not shown) while being guided by the carriage shaft 104b. Nozzle head 104
a, ink is supplied from an ink cartridge 106 provided on the upper side (upper right in FIG. 2) on the front side of the duplex printing apparatus 100, and the ink is discharged onto the roll paper P transported to the lower side, whereby printing is performed. Will be 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. Since the configuration of the second recording apparatus 102B is the same as that of the first recording apparatus 102A, the same reference numerals are given to the same components in FIG. 103, nozzle head 104
a, the discharge roller 104 functions as a “second transport roller”, a “second recording unit”, and a “second 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. When the auxiliary drive roller 107 rotates, the auxiliary drive roller 107 enters the paper feed guide 108. The paper feed guide 108 has a substantially U-shape in side view as shown in the drawing, whereby the roll paper P protruding into the paper feed guide 108 is curved and inverted upward, and the first recording device 102A records the paper. It heads to the second recording device 102B with the folded surface down. Therefore, in the second recording device 102B, the second recording device 10B
The surface of the roll paper P facing the nozzle head 104a in 2B is the surface opposite to the first recording surface. Therefore, by performing printing by the second recording device 102B, both sides of the roll paper P Is printed.

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, so that the roll paper P is fed to the second recording device 102B in a cut sheet state, and printing is performed. In order to more accurately perform this series of sheet feeding operations, sheet overlap detectors 112 and 11 are provided on a U-shaped feeding path formed by the sheet feeding guide 108.
2 are provided, and the paper overlap detectors 112, 112 are provided.
As a result, the overlapping 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 is detected, and if necessary, the first recording apparatus 102A side And the second recording apparatus 102B is configured to synchronize the paper feed speed. At this time, the leading end of the roll paper P cut into the cut sheet state is placed in the second recording device 102.
B, when the sheet reaches the position B, the rear end of the roll paper P in the cut sheet state does not exist in the first recording apparatus 102A, so that the feed from the first recording apparatus 102A to the second recording apparatus 102B is performed. The transmission path length is sufficiently secured.

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 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 a perspective view of the external appearance when B is viewed from above from the front, and FIG. 4 is a perspective view of the external appearance showing a state where a paper discharge frame 68 provided in the cutter device 50B 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. The roll paper P on which printing has been performed in the 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 fixed to a drive belt (not shown) suspended on a drive pulley (not shown) and 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 is arranged in parallel with a vertical plane whose disk surface blocks the advance of the roll paper P, and is long in the width direction of the roll paper P as shown in FIG. The upper surface of the disk is slightly protruded upward from the end surface of the plate 53, and the disk surface is provided so as to contact the end surface of the shear plate 53. In addition, the rotary cutter blade 52 is provided with the rotating shaft 5.
When the cutter blade unit 51 reciprocates in the direction of the arrow in FIG. 5, it is driven to rotate by the frictional force with the shear plate 53, and the roll paper P is rotated. Is sheared with the shear plate 53.

Next, returning to FIGS. 3 and 4, a discharge drive roller shaft 55a is supported by the side frames 61a and 61c below the discharge frame 68, and the discharge drive roller shaft 5a.
5a, a plurality of paper discharge drive rollers 55 are provided in the axial direction.
Is attached. To the discharge drive roller shaft 55a,
Turning power is transmitted from a drive motor (not shown) provided on the main body of the duplex printing apparatus 100 via a gear train 58 provided on the side frame 61c, and the paper discharge drive roller 55 rotates. ing. FIG. 6B shows the gear train 58. As shown, the gear train 58 includes a gear 74 mounted on the most upstream side (left side in FIG. 6) of the cutter device 50B, A gear 72 attached to one end of the drive roller shaft 55a, and a connecting gear 73 connecting the gears 74 to each other.
Are meshed with each other, whereby the discharge drive roller shaft 55a rotates.

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. Accordingly, a paper discharge driven roller 63 that rotates in contact with the paper discharge drive roller 55 is attached (not shown in FIG. 3). Therefore, the rotary cutter blade 5
The roll paper P cut by the roller 2 is nipped by the paper discharge drive roller 55 and the paper discharge driven roller 63, and the paper discharge drive roller 55 is rotated in the nipped state, so that the paper is discharged in the discharge direction (front in FIG. 3). Side). 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 62 mounted on the paper discharge frame 68.
A rotation member 64 rotatably attached to the frame member 62 and rotatably supporting the paper discharge driven roller 63; and a tension coil spring 6 suspended between the frame member 62 and the rotation member 64.
And 5. The frame member 62 has a shape surrounding the rotating member 64, and has a rotating shaft 64b of the rotating member 64 at a corner portion of the paper discharge frame 68 having a substantially L-shape as viewed in side view as shown in FIG. It has a bearing 62b for receiving. On the downstream side (the right side in FIG. 8), an engaging portion 62a with which one end of the tension coil spring 65 is engaged is formed.

The pivoting member 64 has a shaft support 64a shown in FIG.
As a result, the paper discharge driven roller 63 is axially supported by two shafts as shown in FIG. 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 comes into contact with the surface, and protect the printing surface by elastic contact.

Here, the rotating member 64 is capable of rotating 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 is separated and approaches (presses) to the paper discharge drive roller 55 indicated by a virtual line.
You can do it. In addition, the rotating member 64
Is formed with an arm portion 64c extending obliquely upward (upper left in FIG. 8) on the upstream side, and a protruding end of the arm portion 64c has an engaging portion with which one end of a tension coil spring 65 is engaged. 64d are formed. The engaging portion 64d
As described above, the tension coil spring 65 is hung between the and the engagement 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.
3 is in a state of being constantly urged in a direction in which it comes into pressure contact with the paper ejection drive roller 55.

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, as described above, in the cutter device 50B, the rotary cutter blade 52 shears the roll paper P between the roll paper P and the shear plate 53 while moving in the width direction of the roll paper P. Since P tends to rise upward (the state shown in FIG. 8B), the portion to be lifted is pressed by the paper discharge driven roller 63 urged by the tension coil spring 65. Receives pressing force.

Here, depending on the thickness or the material of the roll paper P, the force with which the roll paper P tends to float is different. Therefore, an appropriate pressing force is set according to the material of the roll paper P. Although it is necessary, 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 65
Is suspended between the engaging portion 64d and the engaging portion 62a,
Since it plays only the role of urging the rotating member 64, like the bar spring 91 according to the prior art shown in FIG.
The degree of freedom in changing the spring constant is improved as compared with a configuration in which the discharge driven roller 90 also serves as a supporting member and an urging member, and therefore, the pressing force for pressing the roll paper P can be easily and easily adjusted. Settings can be made.

As shown in FIG. 3, a plurality of paper discharge driven roller mounting devices 60 are provided in the width direction of the roll paper P, so that the paper discharge driven rollers 63 can be independently displaced in the vertical direction. Because of the attachment, the rotary cutter blades are provided in a plurality of discharge driven rollers 63 provided in the width direction of the roll paper P, and the rotary cutter blade is compared with a configuration in which all of the driven driven rollers 63 are integrally moved toward and away from the discharge driving roller 55. Appropriate pressing force can be applied to the portion of the roll paper P that is cut by the 52 and is about to float and the other portions.

In the present embodiment, the discharge driven roller mounting device 60 having the above-described operation and effect is applied to the mounting of the discharge driven roller 63 provided in the cutter device 50B, as shown in FIG. And a paper discharge driven roller 10 provided in the first recording apparatus 102A or the second recording apparatus 102B.
Needless to say, the present invention can be applied to the mounting of 5b 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, a paper discharge drive roller 55 and a paper discharge driven roller 53 are disposed near the downstream side of the rotary cutter blade 52 as described above. The paper ejection drive roller 55 is attached to the paper ejection drive roller shaft 55a, and a first cam follower 67 is provided at one end of the paper ejection drive roller shaft 55a (see FIG. 4). A blocking plate 66 long in the width direction of the roll paper P is connected to the portion 67 (see FIG. 4). The first cam follower 67 is provided rotatably in the clockwise and counterclockwise directions shown in FIG. 9 around the paper discharge drive roller shaft 55a, and a blocking plate 66 connected to the first cam follower 67.
Is also rotated about the discharge drive roller shaft 55a. Further, the first cam follower portion 67 is in a state of being urged by a torsion coil spring (not shown) to rotate counterclockwise as shown in FIG. 9A (the direction in which the blocking surface 66a moves toward the vertical state). .

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”. As shown in FIG. 9 (B), the breaking surface 66a is placed in a substantially vertical state by the urging force of the torsion coil spring (not shown). On the other hand, when the cutter blade unit 51 is at the standby position, the first cam surface 51a of the cutter blade unit 51
(See FIG. 5) and is placed in the state as shown in FIG. 9A, whereby the blocking surface 66a of the blocking plate 66 is at an acute angle 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, it passes through the clearance between the shearing plate 53 and a squeezing drive roller 69 described in detail below,
The sheet is nipped by the sheet discharge drive roller 55 and the sheet discharge driven roller 53 and proceeds downstream (in the direction indicated by the arrow in FIG. 9A), but passes between the shear plate 53 and the pinch drive roller 69. If the leading end of the roll paper P hangs down in front of the discharge drive roller 55 in some cases, the leading end of the roll paper P may fall under the discharge drive roller 55 and may not travel along the regular traveling path. . However, since the blocking surface 66a of the blocking plate 66 is at an acute angle with respect to the horizontal plane as shown in FIG. 9A, the leading end of the roll paper P falls under the discharge drive roller 55. Such troubles are prevented, and the roll paper P is configured to surely follow a regular traveling path.

Next, a rotating member 70 is provided below the shearing plate 53.
Is provided so as to be rotatable clockwise and counterclockwise as shown in FIG. 9 around the rotation shaft 70b, and is always urged to rotate counterclockwise as shown in FIG. 9 by the torsion coil spring 71. It is placed in a state. The rotating member 70 is configured to hold the pressing roller shaft 6 at a position separated from the rotating shaft 70b.
9a, and a squeezing drive roller 69 is attached to the squeezing drive roller shaft 69a. It can be separated and pressed.

The second cam follower portion 70 is provided on a portion of the rotating member 70 located below the cutter blade unit 51.
a is formed, and the second cam follower portion 70a
Like the first cam follower 67, the cutter blade unit 5
When 1 is not at the standby position (when the roll paper P is being cut), the engagement state with the second cam surface 51b at the lower portion of the cutter blade unit 51 is released, whereby the torsion coil spring 71 is attached. As shown in FIG. 9B, the pressing drive roller 69 is brought into pressure contact with the shear plate 53 by the force.
On the other hand, when the cutter blade unit 51 is at the standby position, the cutter blade unit 51 is engaged with the second cam surface 51b of the cutter blade unit 51 and is placed in a state as shown in FIG.
A certain clearance through which the roll paper P passes is formed between the shearing plate 53 and the pressure driving roller 69.

The rotating force is transmitted to the pressing drive roller shaft 69a, so that the pressing drive roller 69 is rotatable. FIG. 6A shows the configuration of the gear mechanism 57 that makes the pinch driving roller 69 rotatable, and reference numeral 80 denotes a gear provided at one end of the pinch driving roller shaft 69a. . As shown in FIG. 3, the gear mechanism 57 is provided on the side frame 61a of the cutter device 50B, and is rotatably fixed to the side frame 61a in a state where the gears 76 to 79 are engaged. The gear 80 is always engaged with the gear 79. However, as described above, the pressure driving roller shaft 69 a to which the gear 80 is attached is displaced by the rotation of the rotation member 70. Therefore, in FIG. 6A, the gear 80 is a planetary gear having the gear 79 as a sun gear. The gear 76 for transmitting 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 squeezing drive roller shaft 69a to rotate. . The gear mechanism 58 for rotating the discharge drive roller shaft 55a is as described above with reference to FIG.

The squeezing drive roller 69 configured as described above
The operation and effect of the pinching means for the roll paper P will be described below with reference to FIG. When the roll paper P is cut at a predetermined position by the cutter device 50B, for example, when a small length at the start end portion of the roll paper P is cut, the upstream side from the rotary cutter blade 52 (FIG. 9)
(Left side in FIG. 3), the roll paper P is restrained in its posture due to the presence of the roll paper P of sufficient length, and is thus stably cut without skew. When only a short length is cut, there is no roll paper P of sufficient length on the upstream side (left side in FIG. 9) from the rotary cutter blade 52, so that the posture of the roll paper P is not restricted. Therefore, there is a possibility that the roll paper P is skewed at the time of cutting and an appropriate cut is not performed. However, the above-described pressing means of the roll paper P, ie, the pressing drive roller 69 holds the roll paper P between the shearing plate 53 and the pressing means, so that the roll paper P is cut at the time of cutting.
Is restrained in its posture, so that even when cutting a small portion of the rear end of the roll paper P, a stable cut can be performed without skew, and a small portion of the rear end of the roll paper P can be cut. Even when cutting the roll paper P, the roll paper P can be more reliably and stably cut by holding the roll paper P under pressure.

Further, for example, when the rear end portion of the roll paper P is cut, the cut debris is in a state where the cut debris is squeezed and held between the squeezing drive roller 69 and the shear plate 53.
By simply releasing the clamping pressure holding state from this state, it is not determined in which direction (upstream or downstream from the clamping driving roller 69) the cut debris will fall. In some cases, cutting waste cannot be dropped. However, since the pressing roller 69 can rotate even in a state where the cutting chips are held, the cutting chips can be removed in the target direction without causing the above-described problem. It can be dropped. That is, by rotating the pressing roller 69 in the normal rotation direction (clockwise direction shown in FIG. 9) while holding the cut chips, the cut chips can be discharged to the downstream side. By turning in the direction (counterclockwise direction shown in FIG. 9), the cut waste can be discharged to the upstream side.

[0046]

As described above, according to the present invention, a plurality of paper discharge driven rollers provided in the width direction of the recording material are independently displaced in the direction away from and close to the paper discharge drive roller. Since the recording material is attached so as to be possible, the recording material can be pressed with an appropriate pressing force according to the cockling (undulating) state of the recording material. Further, the pressing means for pressing the paper discharge driven roller toward the paper discharge drive roller, a bearing member for supporting the paper discharge driven roller so as to be able to separate or approach the paper discharge drive roller, and a shaft support member Since it is constituted by the tension coil spring that urges, it is possible to easily and easily set the pressing force when pressing the paper discharge driven roller toward the paper discharge drive roller,
Thus, it is possible to perform an appropriate sheet discharging operation.

[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.

FIG. 6 is a side view 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.

FIG. 8 is a side sectional view of the paper ejection driven roller mounting device according to the present invention.

FIG. 9 is a side sectional view of the cutter device according to the present invention.

FIG. 10 is a perspective view of a paper ejection driven roller mounting device according to the related art.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 roll paper cassette 2 lid 2 c dust stacker 8 discharge stacker 11 paper feed roller 12 paper feed driven roller 50 A, 50 B cutter device 51 cutter blade unit 52 rotary cutter blade 53 shear plate 54 cutter blade holder 55 paper discharge drive roller 55 a Discharge drive roller shaft 56 Drive motor 57 Gear train 58 Gear train 60 Discharge driven roller mounting device 61a Side frame 61b Main frame 61c Side frame 62 Frame member 63 Discharge driven roller 64 Rotating member 65 Pulling coil spring 66 Shut off Plate 67 First cam follower unit 68 Paper discharge frame 69 Nipping drive roller 69a Nipping drive roller shaft 70 Rotating member 70a Second cam follower unit 71 Tension coil spring 100 Double-sided printing device 101 Window hole 102A First recording device 102B 2 recording apparatus P rolled paper R Roll paper (roll)

Continued on front page F term (reference) 2C058 AC07 AD01 AD03 AE04 AF06 AF08 AF15 AF51 AF55 AF63 LA03 LA13 LA30 LA36 LA39 LA43 LB10 LB19 LB30 LB36 3F049 AA03 CA02 DA12 DB02 LA05 LA07 LB03 3F102 AA10 AA11 EC14

Claims (7)

[Claims] A plurality of discharge members provided in the width direction of the recording material, which nip the recording material between the rotation and a discharge driving roller that is driven to rotate and are driven to rotate in accordance with a discharge operation of the recording material. A paper discharge driven roller mounting device for mounting a paper driven roller so that each of the paper driven driven rollers can be independently displaced in a direction of separating from and approaching the paper discharge driving roller, wherein the recording material is configured to discharge the recording material. When the recording medium is displaced in a direction away from the paper drive roller, the paper discharge driven roller has pressing means for pressing the recording material toward the paper discharge drive roller, and the pressing means pivots on the discharge driven roller. A pivot portion to be supported and a pivot point provided at a position separated from the pivot portion are provided, and by pivoting around the pivot point,
A shaft support member for moving the discharge driven roller apart from and close to the discharge drive roller; and a pulling member for urging the shaft support member in a rotation direction in which the discharge driven roller approaches the discharge drive roller. A sheet discharge driven roller mounting device, comprising: a coil spring. 2. A paper discharge drive roller, which is rotatably driven near a downstream side of a cutter device having a cutter blade capable of reciprocating in the width direction of the recording material for cutting the recording material at a predetermined position. A plurality of discharge driven rollers provided across the width direction of the recording material, which nip the recording material in between and follow and rotate in accordance with the discharging operation of the recording material, each of the discharge driven rollers independently. A paper discharge driven roller mounting device that is mounted so as to be displaceable in a direction away from and close to the paper discharge drive roller, wherein the cutter of a recording material displaced in a vertical direction by being cut by the cutter blade. Pressing means for pressing a portion in the vicinity of the blade toward the paper discharge drive roller, the pressing means being a shaft supporting part for supporting the paper discharge driven roller, and a rotation being provided at a position separated from the shaft supporting part Fulcrum and For example, by rotating around a the pivoting fulcrum,
A shaft support member for moving the discharge driven roller apart from and close to the discharge drive roller; and a pulling member for urging the shaft support member in a rotation direction in which the discharge driven roller approaches the discharge drive roller. A sheet discharge driven roller mounting device, comprising: a coil spring. 3. The paper ejection driven roller mounting device according to claim 1, wherein the paper ejection driven roller is a star wheel having a gear shape that makes a point contact with a recording material. . 4. The paper ejection driven roller mounting device according to claim 1, wherein the paper ejection driven roller is an elastic roller having elasticity for making surface contact with a recording material. 5. A discharge driving roller that is driven to rotate and discharges a recording material on which recording has been performed by a recording unit that performs recording on the recording material; 5. A recording apparatus comprising: a discharge driven roller attached by the discharge driven roller mounting apparatus according to claim 1; 6. A recording section for performing recording on a recording material, and a cutter blade provided downstream from the recording section and capable of cutting the recording material at a predetermined position and capable of reciprocating in the width direction of the recording material. 5. The recording apparatus according to claim 1, wherein the recording medium is nipped between the cutter device having: a discharge drive roller rotatably driven near the downstream side of the cutter device; and the discharge drive roller. 6. And a discharge driven roller mounted by the discharge driven roller mounting device according to (1). 7. A paper discharge roller for discharging a recording material on which recording has been performed in the recording section, and a recording material discharged by the discharge roller is substantially U in a side view.
A feeding path that feeds the recording material by inverting and curving it into a character shape, a second recording unit that performs recording on the unrecorded surface of the recording material whose unrecorded surface faces upward by the feeding path, The second transporting the recording material at a constant pitch to the second recording section
A recording apparatus comprising: a transport roller; and a second discharge roller that discharges a recording material on which recording has been performed in the second recording unit.