JPH09194094A - Curl straightening (decurl) device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effect uniform straightening of a curl, to prevent lowering of conveyance precision, to facilitate an assembly work, and to reduce a part cost by a method wherein the attitude of a curl straightening member is changed according to as load on a paper sheet, in a curl straightening device to straighten the curl of a paper sheet wound in a roll-form state. SOLUTION: A curl straightening member 31 to invert a recording paper in the direction reverse to the curl by making contact with the outer surface of a recording paper being curled is arranged upstream of the conveyance direction from a thermal head to draw and convey a recording paper wound in a roll-form state and a platen roller. The curl straightening member 31 is held by a holding piece 34 provided at a holding member 33 on the cover side with a rotary shaft 32 protruded to a central part in the direction of width in such a manner to be rotatable in the forward and reverse direction within a surface crossing the conveyance direction of the recording paper at right angles. It is suitable that springs 38 are located on both end sides of the curl straightening member 31 and between the holding member 33 and the curl straightening member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decurling device, for example, a decurling device which is applied to a recording device using a recording paper wound in a roll as a paper and removes the curl of the recording paper.

[0002]

2. Description of the Related Art Conventionally, a device using a roll of paper, for example, a recording device, is curled by rolling a roll of recording paper (roll paper) for recording an image or the like, so that the paper is curled. Some are equipped with a device. This decurling device removes the curl by reversing the recording paper that is pulled out and conveyed in the direction opposite to the curl by a decurling member.

As a decal device of this type, for example,
It is described in Japanese Utility Model Publication No. 4-19541. This decurling device fixes a decal member that bends the recording paper conveyance path in front of a thermal head that also serves as a recording paper conveyance means and a platen roller, so that the recording paper that is conveyed is curled while slidingly contacting the decurling member. The curl is removed by reversing in the opposite direction.

[0004]

However, in such a conventional decal device, the contact surface of the decal member that contacts the recording paper extends in the width direction of the recording paper. When the assembling accuracy and the manufacturing accuracy are low and the parallelism with the conveyed recording paper (the recording paper when conveyed with the decal member removed) is poor, the load applied to the recording paper differs between the left and right in the width direction. However, there is a problem in that the curl removal (decal) is not uniform in the width direction, the curl degree becomes uneven, and a portion where the curl is not removed occurs. .

Further, since the decal member is not a completely rigid body, it may be deformed (plastic deformation) due to the contact load with the recording paper, and this deformed condition causes the above-mentioned problem. . Further, there is a problem that skew is generated in the conveyed recording paper when the load applied by the decal member is not uniform in the width direction of the recording paper.

Therefore, in the invention described in claims 1 to 6, the posture of the decurling member can be changed according to the load on the paper, so that the load applied to the paper is made uniform and the curl is made uniform. The purpose of this is to prevent the deterioration of the conveyance accuracy while realizing the effective removal. Further, it is an object of the present invention to loosen the required positional accuracy to facilitate the assembling work and reduce the cost of parts.

According to the seventh aspect of the present invention, the decal member, which is deformed by the load with the paper, can be restored to its original shape, so that the load applied to the paper is prevented from becoming non-uniform due to plastic deformation, and the reliability is improved. The purpose is to improve durability and durability. Further, an object of the present invention is to provide a load for correcting a skew generated at the time of conveyance to the paper so as to maintain the paper to be conveyed at the center and improve the conveyance accuracy of the paper.

[0008]

In order to achieve the above-mentioned object, the invention according to claim 1 is a sheet which is provided on the upstream side in the transporting direction of a transporting means for pulling out and transporting a sheet which is wound in a roll and curled, and which is transported. In a decurling device provided with a decurling member that extends in the width direction of the sheet and comes into contact with the outer surface of the curling sheet and reverses the sheet in the direction opposite to the curling direction, the decurling member is in a plane substantially orthogonal to the conveyance direction of the sheet. It is characterized in that a holding means for holding the rotatably in the forward and reverse directions is provided. Here, it is preferable that the decal member holds substantially the center in the extending direction so that the decal member uniformly contacts the left and right of the sheet in the width direction.

According to the first aspect of the present invention, the decal member is rotatably held and is rotated according to, for example, the load applied from the conveyed sheet. Therefore, the decal member comes into contact with the paper in a posture according to the contact load. The invention described in claim 2 is, in addition to the configuration of the invention described in claim 1,
A limiting member for limiting the rotation amount of the decurling member is disposed on one end side or both end sides of the decurling member. Here, it is preferable to dispose the restricting member on both ends of the decal member, but a restricting member that restricts rotation of the decurl member in both the forward and reverse directions may be disposed only on one end side. Further, the limiting member that limits the rotation of the decal member in only one of the forward and reverse directions needs to be provided at both ends.

According to the second aspect of the invention, even if the decal member rotates, the rotation amount thereof is limited to a certain amount by the limiting member. Therefore, even when the sheet transport path is opened, the sheet does not rotate indefinitely, and the posture within a certain range is maintained. According to a third aspect of the present invention, in addition to the configuration of the second aspect of the invention, elastic members that elastically deform in the rotation direction of the decal member are arranged on both end sides of the decal member. .
Here, the elastic member may be a spring, a leaf spring, an elastic body such as rubber or resin, or the like.

According to the third aspect of the present invention, the decal member is rotated by applying a rotating load.
The elastic member is elastically deformed according to its load. Therefore, the decal member takes a posture according to the contact load, and the elastic force of the elastic member is applied. Therefore, the decal member is pressed against the paper by the elastic force of the elastic member. Further, the elastic member is interposed between the apparatus main body side and the decurling member side, so that it is possible to prevent the decurling member from rotating indefinitely when the paper conveyance path is opened. The restriction member may be configured by an elastic member.

According to a fourth aspect of the present invention, in addition to the structure of the first aspect of the present invention, a surface that is substantially orthogonal to the sheet conveying direction is provided, and the orthogonal surface of the decal member is used. It is characterized in that a guide member for guiding rotation is provided. In the invention according to the fourth aspect, the decal member receives a load in the conveying direction as well as a load in the rotating direction by the paper, but the movement in the conveying direction is limited by contacting the orthogonal surface of the guide member, Movement in the direction of rotation is guided by its orthogonal plane. Therefore, the holding means and the guide member share the load that restricts the movement of the decurling member in the sheet conveying direction. At this time, when elastic members are arranged on both ends of the decal member, the elastic members can hold the decal member in a rotated state and the guide member holds the decal member in the sheet conveying direction. You may comprise a holding means with a member.

According to a fifth aspect of the present invention, in addition to the configuration of the fourth aspect of the invention, the guide member serves as a limiting member that limits the amount of rotation of the decal member, and abuts against the end of the rotating decal member. The part is provided on one side or both sides in the forward and reverse directions of the rotation.
In the invention according to claim 5, the rotation of the decal member is restricted by hitting the abutting portion formed on the guide member. Therefore, it is not necessary to separately arrange the restriction member.

According to a sixth aspect of the present invention, in addition to the configuration of the fourth aspect of the invention, an elastic member that elastically deforms in the rotation direction of the decal member is accommodated in the guide member. . According to the invention of claim 6, the elastic member is housed in the guide member. Therefore, since the elastic member is assembled, parts are omitted, and it is possible to prevent dust and the like from adhering.

According to a seventh aspect of the present invention, in addition to the configuration of the first aspect of the present invention, an elasticity having an elastic force such that the decal member is deformed by the tension of the sheet pulled out by the conveying means. It is characterized by being made of a material. In the invention according to claim 7, the decal member is configured to be elastically deformable, and is deformed according to the load with the paper. Therefore, the load applied to the conveyed sheet can be made uniform without causing plastic deformation.

According to an eighth aspect of the present invention, in addition to the structure of the seventh aspect, elastic members that are elastically deformed in the rotation direction of the decal member are integrally formed on both end sides of the decal member. To do. According to the eighth aspect of the invention, the elastic member is integrally formed of the decal member and the elastic material. Therefore, it is not necessary to prepare the elastic member separately from the decal member.

According to a ninth aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the contact surface of the decurling member with the paper sheet, the central portion in the extending direction, projects toward the paper sheet side. It is characterized in that it is formed to have a convex shape. In the ninth aspect of the invention, the paper comes into contact with the contact surface formed on the convex shape of the decal member. Therefore,
A load is applied to the paper so that the transport position is at the center of the decal member.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1 to 3 show a first decal device according to the present invention.
It is a figure which shows an example of the recording device which mounts embodiment, FIG. 1 is a general | schematic whole block diagram which shows the example, and FIG.2 and FIG.3 is a block diagram which shows the 1st Embodiment. The present embodiment corresponds to the invention described in claims 1 to 3.

In the figure, reference numeral 10 is a facsimile apparatus which constitutes a recording apparatus. The facsimile apparatus 10 heats a recording sheet 11 made of a thermal paper based on image information received by a facsimile while a thermal head 12 is pressed against the recording sheet 11. Record and form an image. The recording paper 11 on which an image is recorded by the facsimile device 10 is housed in a roll paper holder 13 in a rolled state, and the platen roller 14 is pulled out and conveyed by rotating while being pressed against the thermal head 12. To do. That is, the thermal head 12 and the platen roller 14 form a conveyance means for the recording paper 11.

Although the basic construction of the facsimile apparatus 10 is well known, it will not be described in detail, but the platen roller 14 is rotatably driven by the driving force of the RX motor (stepping motor) 15 and conveyed. Recorded recording paper 11
Is cut by the cutter unit 16 for each page and discharged onto the discharge table 17. To replace (replenish) the recording paper 11, the rear upper cover 18 is rotated to open the transport path. Do it. On the other hand, the document to be transmitted by facsimile is set on the document table 20 and inserted to the feeding position so that the ADF roller 21 is rotated by pressure contact with the separation plate 22 to be fed, and the conveying roller pair 23 is nipped and conveyed to the reading position. Pass the paper and eject it outside the machine. Then, regarding the image information of the document, the light source 24 irradiates the document passing through the reading position with light, and the reflected light from the document is read by the CCD 27 via the mirror 25 and the lens 26. Note that the original conveying path can also be opened by rotating the front upper cover 28 in which the operation port is arranged, and the ADF roller 21 and the conveying roller pair 23 are rotated by transmitting the driving force of the TX motor 29. To drive.

Since the recording paper 11 is wound in a roll and curled in this facsimile apparatus 10, the decurling device 30 for removing the curl is provided on the upstream side of the thermal head 12 and the platen roller 14 in the conveying direction of the recording paper 11. The decurling device 30 is disposed on the outer surface of the curled recording paper 11 by the decurling member 31 extending in the width direction of the recording paper 11 to bend the conveyance path and reverse the curling direction. Excluding the curl.

As shown in FIGS. 2 and 3, the decurling device 30 has a rotary shaft 32 at a portion of the decurling member 31 corresponding to the center of the width of the recording paper 11 so as to be substantially parallel to the conveying direction of the recording paper 11.
The rotation shaft 32 is rotatably inserted and held from the lower surface of the holding member 33 on the cover 18 side to the holding piece 34 protruding from the lower surface of the holding member 33 on the cover 18 side. It is held rotatably in the forward and reverse directions within a plane substantially orthogonal to. That is, the holding piece 34 constitutes a holding means, and the decurling member 31 is rotated according to the contact load with the recording paper 11. The decal member 31 is formed so that the contact surface 31a for contacting the recording paper 11 is formed at a predetermined angle (although it is formed at about 90 ° in the drawing, it may be formed at a more acute angle or an obtuse angle). However, it may be formed in an arc shape.

In this decurling device 30, projections 35 projecting outward in the width direction of the recording paper 11 are provided on both ends of the decurling member 31, and the projections 35 rotate the decurling member 31 in the forward and reverse directions by a certain amount. When this is done, it abuts the upper and lower surfaces 37a, 37b of the groove portion 37 of the stopper 36 provided on the lower surface side of the holding member 33. That is, the stopper 36 constitutes a limiting member that abuts the protrusion 35 and limits the amount of rotation of the decurling member 31, and for example, when the cover 18 is rotated to open the conveyance path of the recording paper 11, the decurling member 31 is unlimited. It is possible to maintain the posture such that the conveyance path can be closed by rotating the cover 18 as it is. Note that the stopper 36 may be provided only on one end side of the decal member 31 because the groove portion 37 abuts on the projection 35 that rotates in the forward and reverse directions. Need to be installed.

In the decurling device 30, springs 38 that expand and contract in the rotational direction between the decurling member 31 and the holding member 33 are provided at both ends of the decurling member 31. The contact surface 31a is supported by a support portion 39 which is erected from the back surface side in the direction of expansion and contraction. That is, the spring 38 constitutes an elastic member that elastically deforms in the rotation direction of the decal member 31, the spring 38 urges the decal member 31 in the extension direction, and the decal member 31 makes contact load with the recording paper 11. Since the elastic force is applied to the recording paper 11 when it is rotated, the decurling member 31 can be uniformly pressed against the recording paper 11 in the width direction. The elastic member is not limited to the spring 38, and may be a leaf spring, an elastic body such as rubber or resin, or the like, and acts as a restriction member because an elastic force that restricts the rotation of the decal member 31 is applied. Further, the supporting portion 39 is a recording paper.
By extending in the width direction of 11, the spring 38 can be supported and the strength of the decal member 31 can be improved.

As described above, in the present embodiment, the recording paper 11 sandwiched between the thermal head 12 and the thermal head 12 is pulled out while the platen roller 14 is rotationally driven. The recording paper 11 is a decal member. The curl is removed (decal) because it is bent while sliding on 31. At this time, since the decal member 31 is rotatably held in the direction substantially orthogonal to the transport direction according to the contact load with the recording paper 11,
A load for removing the curl is uniformly applied to the recording paper 11 in the width direction, and the curl can be uniformly removed.
Further, although the contact resistance with the decal member 31 is a conveyance load, it is uniform in the width direction, so that the conveyance accuracy of the recording paper 11 does not deteriorate. For this reason, the decal member 31 does not need to be positioned with high precision, can be easily assembled, and need not be manufactured with high precision.

Further, since the elastic force of the spring 38 is applied to both ends of the decal member 31, it is prevented from freely rotating, and it does not resonate due to the propagation of the vibration of the RX motor 15 and noise is generated. It does not occur. Further, it was sometimes impossible to uniformly remove the curl of the recording paper 11 only by holding the decurling member 31 rotatably, but the decurling member 31 swings in good balance due to the elastic force of the spring 38 being applied. For example, even if the contact load from one side of the recording paper 11 is large, the decal member 31 is pushed up (rotated) following it and is pressed against the recording paper 11 by the elastic force of the spring 38. The curl can be removed uniformly.

Further, when the cover 18 is rotated to open the conveyance path of the recording paper 11, even if the decal member 31 rotates, the protrusion 35 abuts on the groove portion 37 of the stopper 36 and the rotation amount thereof is limited. Therefore, it can be prevented from rotating without limit and coming into contact with other members, and being prevented from being damaged. When the decurl member 31 rotates freely, it is necessary to secure a space so that it does not come into contact with other members. However, the rotation of the decurl member 31 is limited by the stopper 36, and the posture during the decurl operation is maintained substantially. It is possible to omit wasted space. Further, even when the conveyance path of the recording paper 11 is closed, the cover 18 can be rotated and closed as it is. In this embodiment, since the spring 38 is interposed between the decal member 31 and the holding member 33 and the rotation of the decal member 31 is limited, there is no problem even if the stopper 36 is omitted.

As a first other mode of this embodiment, as shown in FIG. 4, the upper and lower surfaces 47a and 47b (only 47a is shown in FIG. 4) of the projection 35 of the decal member 31 in the vertical direction. The stoppers 36 may be formed with the recesses 47 having side surfaces 47c facing each other in the conveying direction of the recording paper 11 (including the reverse direction). That is, the upper and lower surfaces 47a, 47b
Constitutes an abutting portion that abuts the projection 35 (end portion) of the decal member 31, the side surface 47c constitutes a surface (orthogonal surface) substantially orthogonal to the conveyance direction of the recording paper 11, and the stopper 36 constitutes the side surface 47c. A guide member for guiding the rotation of the decurling member 31 in the orthogonal direction may also be configured. With this structure, even if the decal member 31 tries to move in the carrying direction due to the load applied by the carrying of the recording paper 11, the decal member 31 comes into contact with the side surface 47c of the stopper 36 and its movement is restricted, and the decal member 31 is retained by the holding piece 34. The load applied can be shared (reduced). Therefore, it is possible to prevent the holding piece 34 from being deformed or damaged, and it is not necessary to unnecessarily increase the strength of the holding piece 34. Further, since the stopper 36 also serves as a limiting member and a guide member, it can be made compact and the number of parts can be reduced.
Note that the other aspects correspond to the inventions described in claims 4 and 5. Also, in this other embodiment, the spring 38
The decurl member 31 can be held rotatably by means of this, and the movement of the recording paper 11 in the carrying direction is prevented by the side surface 47
Since it can be limited (held) by c, the spring 38 and the stopper 36 may constitute a holding means.

As a second other mode of the present embodiment, as shown in FIG. 5, both ends of the decurling member 31 project outward in the width direction of the recording paper 11 and bend downstream in the transport direction. The rod-shaped member 55 is provided, and the bent portion 55a of the rod-shaped member 55 is rotatably accommodated on the lower surface side of the holding member 33, and the rod-shaped member is about to move in the transport direction of the recording paper 11.
You may provide the stopper 56 formed in the shape of a frame which the opposing surface 56a contacts 55, and limits the movement. That is, the stopper
The guide member may be constituted by 56. In addition, the other aspect corresponds to the invention described in claim 4. Further, in this other mode, the rotation amount of the decal member 31 is limited by the rod-shaped member 55 contacting the frame side surface of the stopper 56, and the rotation is also limited by the spring 38, so there is no problem.

As a third other aspect of the present embodiment, as shown in FIG. 6, the decal member 31 has a spring 38.
Is provided on the lower surface of the holding member 33.
Is provided with a cylindrical portion 62 for movably accommodating in the vertical direction, and the cylindrical portion 62 opposes the cylindrical portion 61 of the decal member 31 in a plane orthogonal to the conveying direction of the recording paper 11 and restricts the movement in the conveying direction. Alternatively, the rotation of the decal member 31 may be guided. That is, the tubular member 62 may form a guide member. With this structure, the spring 38 can be protected from external force, and
It is possible to omit a member that prevents the device from being inclined. Further, it is possible to prevent dust and the like from adhering to the spring 38 and maintain its performance. Therefore, the decurling function of the decurling member 31 can be maintained, and the parts for assembling the spring 38 can be omitted. The other aspects correspond to the invention described in claim 6. Further, in this other mode, since the rotation of the decal member 31 is limited by the spring 38, there is no problem. Since the decal portion 31 rotates, the tubular portions 61 and 62 preferably have a cross-sectional shape of, for example, a quadrangular shape. Further, the spring 38 is not limited to the cylindrical portions 61 and 62, but may be housed so as to be positioned on one or both of the upper and lower sides of the protrusion 35 in the recess 47 of the stopper 36 of the first other aspect.

Next, FIG. 7 is a diagram showing a second embodiment of the decurling device according to the present invention, and this embodiment is a facsimile apparatus which is an example of a recording device like the first embodiment.
It is installed in 10. The present embodiment corresponds to the invention described in claims 7 and 8. In the figure, 71 is a decurling member, and the decurling member 71 is formed of an elastic material having an elastic force such that it is deformed by the tension of the recording paper 11 to be conveyed, and the "C" character is formed on both ends thereof. An elastic portion formed in a shape and elastically deformed in the rotation direction of the decal member 31.
78 is integrally molded. In the decal member 71, the rotation shaft 32 is rotatably held by the holding piece 34 and the amount of rotation of the decurling member 71 is limited by the projection 35 hitting the groove portion 37 of the stopper 36, as in the above-described embodiment. During the rotation, the elastic portion 78 on the side close to the holding member 33 is elastically deformed, so that the elastic portion 78 is biased in the extension direction.

In this embodiment, it is possible to obtain the same effects as the above-described first embodiment, and at the same time, the decal member
When 71 is deformed according to the contact load with the recording paper 11 and the load is removed, it can elastically recover. Therefore, the plastic sheet is not plastically deformed, the load applied to the conveyed sheet can be made uniform, and the recording sheet 11 can be prevented from meandering. Further, since the elastic portion 78 is integrally molded with the decal member 71 instead of the spring 38 as the elastic member, it is not necessary to separately prepare and assemble the spring 38, and no assembly member is required.

Next, FIG. 8 is a diagram showing a third embodiment of the decurling device according to the present invention. This embodiment is a facsimile device which is an example of a recording device as in the first embodiment.
It is installed in 10. The present embodiment corresponds to the invention described in claim 9. In the figure, reference numeral 81 denotes a decurling member, and the decurling member 81 is formed so that the center portion in the width direction of the contact surface 81a with the recording paper 11 has a convex shape protruding toward the recording paper 11 side. It is configured similarly to the embodiment.

In this embodiment, it is possible to obtain the same effects as the above-described first embodiment, and the conveyed recording paper 11 makes sliding contact with the contact surface 81a of the decal member 81 while applying contact resistance. Since the central portion of the contact surface 81a is formed in a convex shape, a load is applied to the recording paper 11 so that the conveyance position is the central portion of the decurling member 81. Therefore, the recording sheet 11 is conveyed while maintaining the conveying position at the center of the decurling member 81, so that the recording sheet 11 can be conveyed while correcting the skew.

[0035]

According to the first aspect of the present invention, since the decal member comes into contact with the sheet rotatably held by the holding means and conveyed, the decal member comes into contact with the sheet in a posture corresponding to the contact load. Therefore, the load applied to the paper can be made uniform in the width direction, the curl of the paper can be uniformly removed, and the non-uniform load is not applied to the paper to reduce the conveyance accuracy. Also,
Since the decal member comes into uniform contact with the paper by rotating, it is not necessary to position it with high precision, it can be easily assembled, and it is not necessary to use high-precision and expensive parts.

According to the second aspect of the invention, the rotation amount of the decal member is limited to a fixed amount by the limiting member.
It is possible to prevent unlimited rotation of the paper when it is opened, such as when the paper transport path is opened, to prevent damage to other members. Can be Further, since the posture within a certain range is maintained even when the sheet conveyance path is closed, the work can be easily performed.

According to the third aspect of the present invention, the elastic member is elastically deformed in the rotation direction by the rotation of the decal member due to the contact load with the paper, so that the decal member has the posture corresponding to the contact load and the paper The decal member is pressed against the elastic force corresponding to the amount of rotation. Therefore, it is possible to apply a stable contact load to the paper to make the removal of the curl more uniform, and more reliably prevent the conveyance accuracy from deteriorating. Further, the restricting member can be configured by the elastic member, and the number of parts can be reduced to further reduce the cost.

According to the fourth aspect of the invention, the orthogonal surface of the guide member abuts and limits the decurling member which is going to move in the sheet conveying direction, and guides the movement in the rotating direction. It is possible to share the load applied in the conveying direction. Therefore, it is possible to prevent the holding means from being damaged, and it is not necessary to unnecessarily increase the strength of the holding means, so that the cost of the parts can be reduced. Further, the holding means can be configured to hold the rotation direction and the conveyance direction of the decal member together with the elastic member.

According to the fifth aspect of the present invention, since the rotation of the decal member is limited by abutting against the abutting portion of the guide member, it is not necessary to separately provide the limiting member, and the apparatus can be made compact. In addition, the number of parts can be reduced and the cost can be further reduced. According to the invention described in claim 6, since the elastic member is housed in the guide member, it is possible to omit parts for assembling the elastic member, and it is possible to reduce the cost by reducing the number of parts.

According to the seventh aspect of the invention, since the decal member is elastically deformable and deformed according to the load with the paper, plastic deformation is prevented and the load on the conveyed paper is made uniform. be able to. Therefore, reliability and durability can be improved. According to the invention as set forth in claim 8, since the elastic member is integrally formed with the decal member by the elastic material, the elastic member can be prepared for preparation at the time of manufacturing the decal member, and the attaching work is unnecessary. Therefore, the assembling work can be facilitated and the cost can be reduced by reducing the number of parts.

According to the ninth aspect of the present invention, since the central portion of the contact surface of the decal member is formed in a convex shape, it is possible to apply a load to the sheet so that the conveying position is in the central portion and correct the skew. be able to. Therefore, the sheet to be conveyed can be maintained at the center, and the sheet conveyance accuracy can be improved.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of a recording device equipped with a first embodiment of a decal device according to the present invention, and is a schematic overall configuration diagram showing the example.

FIG. 2 is an overall configuration diagram of a first exemplary embodiment as viewed from a sheet conveyance direction.

FIG. 3 is a partial cross-sectional configuration diagram from the width direction of the sheet showing the first embodiment.

FIG. 4 is a perspective view showing a main part of a first other aspect thereof.

FIG. 5 is a perspective view showing a main part of a second other aspect thereof.

FIG. 6 is a partial cross-sectional configuration diagram showing a main part of a third other aspect thereof.

FIG. 7 is a diagram showing a second embodiment of a decurling device according to the present invention, and is an overall configuration diagram of the sheet in the carrying direction.

FIG. 8 is a diagram showing a third embodiment of a decurling device according to the present invention, and is an overall configuration diagram of the sheet in the carrying direction.

[Explanation of Codes] 10 Facsimile device (recording device) 11 Recording paper (paper) 12 Thermal head (conveying means) 14 Platen roller (conveying means) 18 Rear upper cover 30 Decal device 31, 71, 81 Decal member 31a, 71a , 81a Contact surface 34 Holding piece (holding means) 35 Protrusions 36, 56 Stopper (limiting member, guide member) 37 Groove 38 Spring (elastic member) 47 Recesses 47a, 47b Upper and lower surfaces (abutting portion) 47c Side surface (orthogonal surface) 62 Cylindrical part (guide member) 78 Elastic part (elastic member)

Claims (9)

[Claims] 1. A roll-shaped curled sheet is provided on the upstream side in the conveying direction of a conveying means for pulling out and conveying the curled sheet, which extends in the width direction of the conveyed sheet and is brought into contact with the outer surface of the curled sheet. A decurling device provided with a decurling member that reverses in the direction opposite to the curl, characterized in that holding means is provided to hold the decurling member rotatably in forward and reverse directions in a plane substantially orthogonal to the sheet conveying direction. And decal device. 2. The decurling device according to claim 1, wherein a limiting member for limiting the rotation amount of the decurling member is provided on one end side or both end sides of the decurling member. 3. The decurling device according to claim 1, wherein elastic members that are elastically deformed in the rotation direction of the decurling member are arranged at both ends of the decurling member. 4. The guide member according to claim 1, further comprising a surface that is substantially orthogonal to the sheet conveying direction, and a guide member that guides the rotation of the decurling member on the orthogonal surface. Decal device described. 5. The guide member is provided with an abutting portion that abuts against an end portion of a rotating decal member as one of or both sides in the forward and reverse directions of the rotation, as a limiting member for limiting the rotation amount of the decal member. The decal device according to claim 4, wherein: 6. The decurling device according to claim 4, wherein an elastic member that elastically deforms in the rotation direction of the decurling member is accommodated in the guide member. 7. The decal member is made of an elastic material having an elastic force such that it is deformed by the tension of the sheet pulled out by the conveying means.
The decal device according to any one of 1. 8. The decurling device according to claim 7, wherein elastic members elastically deformable in the rotation direction of the decurling member are integrally formed on both end sides of the decurling member. 9. The decal member contacting surface with a sheet is formed such that the central portion in the extending direction has a convex shape protruding toward the sheet. Decal device described.