JP4232497B2 - Recording medium playback device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a recording medium playback apparatus.
[0002]
[Prior art]
Conventionally, a recording material is attached by an image forming apparatus such as an electrophotographic machine or a printer, and the recording material on the recording medium is removed from the recording medium on which the image is formed, so that a new image can be printed on the recording medium again. As a device for doing this, a recording medium reproducing device is known (see, for example, Patent Document 1 and Patent Document 2).
[0003]
In the apparatus described in Patent Document 1, the recording medium on the recording medium is destroyed and removed by moving the recording medium while bringing a blade-shaped blade into contact with the recording medium.
In the apparatus described in Patent Document 2, the recording medium is bent to generate a bending stress on the recording material and the recording medium to break the layered recording material to some extent, and then removed by a brush or the like.
[0004]
In this way, the above-described apparatus reproduces the recording medium again in a state where image formation is possible.
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-072794
[Patent Document 2]
JP 2001-337570 A
[0006]
[Problems to be solved by the invention]
However, in the recording medium reproducing apparatus described in Patent Document 1, since it is necessary to press the blade-shaped blade against the recording medium with a considerable load, the surface of the recording medium is damaged even if the recording material can be removed from the recording medium. As a result, there is a possibility that the number of times of reproduction of the recording medium is reduced.
[0007]
Further, in the recording medium reproducing apparatus described in Patent Document 2, the above problem can be solved by curving the recording medium so that an appropriate bending stress is applied. Since the radius of curvature to be curved is constant, there is a risk that the recording medium will be permanently deformed if the recording medium is thick. Conversely, if the recording medium is thin, the recording material is removed with a brush. The bending stress required to facilitate the recording medium cannot be applied to the recording medium, and the recording material may not be sufficiently peeled from the recording medium.
[0008]
Therefore, in view of such circumstances, an object of the present invention is to remove the recording material from the recording medium without damaging the recording medium so that a new image can be formed on the recording medium.
[0009]
[Means for Solving the Problems and Effects of the Invention]
In order to achieve this object, the invention according to claim 1 is characterized in that the recording material attached to the surface of the recording medium is separated from the recording medium, and the separation member A conveying means for peeling the recording material from the recording medium by relatively moving the recording medium, a bending means for bending the recording medium before peeling of the recording material by the peeling member, and the bending means for recording And a curvature adjusting mechanism for changing the curvature when the medium is bent.
[0010]
In other words, the appropriate bending stress applied to the recording medium in order to make it easy to peel the recording material from the recording medium varies depending on the thickness and material of the recording medium. Therefore, as in the present invention, the curvature with which the bending means curves the recording medium. Is configured to be changeable.
[0011]
With such a recording medium reproducing device, the recording medium is curved with an appropriate curvature according to the type of the recording medium, thereby damaging the recording material on the recording medium and peeling the recording material from the recording medium. At this time, since the load applied to the recording medium can be reduced, the recording material on the recording medium can be removed and a new image can be formed on the recording medium without damaging the recording medium. .
In the recording medium reproducing apparatus according to claim 1, Changing means for changing the curvature with which the bending means bends the recording medium by driving the curvature adjusting mechanism according to the type of the recording medium; Have .
[0012]
Also, the bending means is Claim 1 The guide member having a curved surface portion is provided, and the changing means is configured to change the pressing force applied to the curved surface portion by the support member that presses the guide member from the outside and to change the curvature of the curved surface portion. Has been .
In this way, since the curvature for bending the recording medium can be changed only by changing the pressing force applied to the curved surface portion by the support member, the entire apparatus can be simplified.
[0013]
Furthermore, Claim 1 In the recording medium playback device described in Claim 2 As described above, it is preferable that the guide member is constituted by a leaf spring.
Thus, if the guide member is formed of a leaf spring, a recording medium reproducing apparatus that has good durability and can easily change the curvature of the curved surface portion can be obtained.
[0014]
Also, In the recording medium reproducing apparatus, in order to change the curvature for bending the recording medium, for example, Claim 1 As described above, the pressing force applied to the curved surface portion may be changed by the support member that presses the guide member from the outside, and the curvature of the curved surface portion may be changed. Claim 3 As described in the above, a plurality of bending means having different curvatures for bending the recording medium are provided, and the changing means uses the bending means positioned on the path of the recording medium by changing to another bending means. The curvature for curving the recording medium may be changed.
[0015]
In this way, the recording medium can be bent while always maintaining the curvature for bending the recording medium in an optimum state according to the type of the recording medium.
Also, In the recording medium playback device, Claim 4 The curvature adjusting mechanism is provided with the bending means, and the curvature adjusting mechanism is manually operated with another curvature adjusting mechanism provided with other bending means set to a different curvature. It may be configured to be replaceable.
Furthermore, if the curvature for bending the recording medium is large, it is difficult to give irreversible deformation such as “folding” to the recording medium. Claim 5 As described above, it is preferable that the bending means bends the recording medium with the surface of the recording medium to which the recording material is attached facing inward.
[0016]
In other words, when applying the same amount of bending stress to the recording medium, the surface of the recording medium to which the recording material is attached is set to the inside rather than the surface of the recording medium to which the recording material is attached is curved to the outside. Since it is possible to effectively damage the recording material by curving the recording medium even if the curvature for curving the recording medium is larger, the present invention ( Claim 5 ), The recording medium can be made more difficult to be damaged.
[0017]
Next, the peeling member for peeling the recording material from the recording medium is Claim 6 As described in the above, an edge portion that is formed by intersecting two planes and is in contact with the recording medium so that the conveying means relatively moves the peeling member and the recording medium to peel the recording material from the recording medium. You may have, Claim 7 As described above, the peeling member may include a brush.
[0018]
If such a peeling member is used, the recording material can be reliably peeled from the recording medium.
In particular, Claim 7 If the peeling member provided with the brush is used as described in the above, it is possible to reliably prevent the recording medium from being damaged.
[0019]
Also, Claim 7 In the recording medium playback device described in Claim 8 As described above, it is desirable to further include a rotating means for rotating the brush in a direction opposite to the direction of relative movement with the recording medium.
Thus, when the brush is rotated in the direction opposite to the direction of relative movement with the recording medium, the recording material can be easily peeled from the recording medium.
[0020]
Also, Claim 9 And a pressing member that is disposed so as to be relatively displaceable with the peeling member and that can form a pair with the peeling member and sandwich the recording medium, and at least one of the peeling member and the pressing member is displaced. Thus, when the leading edge of the recording medium passes through the peeling member, a gap is formed between the peeling member and the pressing member, and after the leading edge of the recording medium passes through the peeling member, the peeling member And a pressing control means for holding the recording medium between the pressing member and the pressing member.
[0021]
That is, when the leading end of the recording medium passes through the peeling member, if the peeling member and the pressing member are in close contact with each other, there is a possibility that the leading end of the recording medium cannot pass between the peeling member and the pressing member. When the leading end of the recording medium passes through the peeling member, a gap is formed between the peeling member and the pressing member. After the leading end of the recording medium passes through the peeling member, the recording medium is separated by the peeling member and the pressing member. It is trying to pinch.
[0022]
In this way, the leading edge of the recording medium can surely pass through the peeling member, so that the leading edge of the recording medium collides with the peeling member and the recording medium bends to damage the recording medium. Instead, the recording material can be peeled off from the recording medium after the leading edge of the recording medium has passed through the peeling member.
[0023]
[0024]
[0025]
[0026]
[0027]
[0028]
[0029]
[0030]
[0031]
[0032]
[0033]
[0034]
[0035]
[0036]
[0037]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments according to the present invention will be described below with reference to the drawings.
[Example 1]
FIG. 1 is a schematic configuration diagram of a recording medium playback apparatus 1 (recording medium playback apparatus referred to in the present invention; hereinafter referred to as playback apparatus 1) of the present embodiment (embodiment 1).
[0038]
The reproducing apparatus 1 includes a support plate 22 fixed inside the reproducing apparatus 1, an elastic plate guide 24, and a curvature adjusting motor 38 that changes the curvature of the elastic plate guide 24 (guide member in the present invention) (see FIG. 3). ), And a curvature adjusting mechanism 20 (curving means referred to in the present invention) having a control device 51 (see FIG. 3) and the like, and conveying rollers 31 to 34 (the present one) for conveying the recording sheet 5 (recording medium referred to in the present invention). Conveying means), a conveying motor 56 (see FIG. 3) for driving the conveying rollers 31 to 34, a guide roller 30 for moving the conveyed recording sheet 5 in contact with the elastic plate guide 24, A peeling device 40 (peeling member referred to in the present invention) for peeling the recording material 5B on the recording surface 5A of the recording sheet 5, a pressing device 60 for pressing the recording sheet 5 against the peeling device 40 side, and the thickness of the recording sheet 5 are measured. Do A position sensor 37, a position sensor 41 for detecting the paper edge of the recording sheet 5, and a.
[0039]
The peeling device 40 includes a rectangular plate-like blade 42, and the recording sheet 5 is conveyed in a state where the edge portion 42 </ b> A of the blade 42 is in uniform contact with the recording surface 5 </ b> A of the recording sheet 5. The recording material 5B on the recording surface 5A is peeled off.
The pressing device 60 includes a support base 62 fixed inside the reproducing apparatus 1, a spring 64 that is attached to the support base 62 and expands and contracts by being electrically controlled, and a rubber plate, for example. And a pressing plate 66 (pressing member in the present invention) that receives a pressing force. The pressing plate 66 receives a pressing force from a spring and presses against a blade 42 provided in the peeling device 40 with a predetermined pressing force. It is configured to be allowed to.
[0040]
One transport roller 31 is disposed at each end of the transport roller 31 and is joined to a spring 35 having one end fixed to a guide presser 26 (supporting member in the present invention). The recording sheet 5 is always brought into contact with the elastic plate guide 24.
[0041]
The guide roller 30 is configured so that the recording sheet 5 is always in contact with the elastic plate guide 24 by a spring 35, similarly to the conveying roller 31.
The displacement sensor 37 employs, for example, an ultrasonic displacement sensor (for example, UD-500 manufactured by Keyence Corporation), and the recording sheet 5 is positioned at a position before the recording sheet 5 is bent by the elastic plate guide 24. The thickness is measured.
[0042]
The position sensor 41 is, for example, a mechanical sensor that outputs a high level signal when the recording sheet 5 comes into contact with the detection portion. Based on the detection by the position sensor 41, the state of the presser 60 is determined. To control.
The operations of the various sensors (the displacement sensor 37 and the position sensor 41) and the pressing device 60 will be described later in detail, and the description thereof is omitted here.
[0043]
Next, the structure near the curvature adjusting mechanism 20 will be described with reference to FIG. FIG. 2 is a cross-sectional view taken along a plane along the traveling direction of the recording sheet 5 in the vicinity of the curvature adjusting mechanism 20.
As shown in FIG. 2, the curvature adjustment mechanism 20 includes an elastic plate guide 24, a guide press 26, a curvature adjustment screw 28, a curvature adjustment motor 38 (see FIG. 3), and a control device 51 (see FIG. 3). It is configured.
[0044]
The elastic plate guide 24 is made of, for example, a SUS thin plate (thickness: 100 μm), and is held in a state where the curved surface portion 24A is formed by being fixed to a part of the support plate 22 and supported by another part of the guide presser. Has been.
The guide retainer 26 is formed with a screw hole. When the curvature adjusting screw 28 inserted through the screw hole rotates, the guide retainer 26 moves up and down to change the curvature of the elastic plate guide 24. It is configured.
[0045]
Note that the distal end portion of the curvature adjusting screw 28 is rotatably supported by the support plate 22.
Next, the control device 51 will be described with reference to FIG. FIG. 3 is a block diagram showing an electrical or mechanical coupling relationship of each part constituting the playback device 1.
[0046]
In FIG. 3, the control device 51 includes an input / output interface 52, a CPU 53, a ROM 54, and a RAM 55.
The ROM 54 stores a program for driving the CPU 53, and the CPU 53 is based on the program stored in the ROM 54 and signals from the displacement sensor 37 and the position sensor 41 input via the input / output interface 52. Various calculations. At this time, the RAM 55 is used as a work area when the CPU 53 performs calculation.
[0047]
In this way, the curvature adjustment motor 38, the conveyance motor 56, and the spring 64 are controlled based on the calculation result calculated by the CPU 53. When the curvature adjustment motor 38 and the conveyance motor 56 are driven in this way, the curvature adjustment screw 28 and the conveyance rollers 31 to 34 are driven via a gear mechanism (not shown).
[0048]
Further, when the spring 64 is controlled, the pressing plate 66 is moved up and down (see FIG. 1), and the pressing force for pressing the pressing plate 66 against the peeling device 40 is changed.
Next, the operation of the playback apparatus 1 will be described with reference to FIG. FIG. 4 is a flowchart showing recording medium reproduction control performed by the control device 51 (CPU 53).
[0049]
First, in S 101, as an initial setting, the RAM 55 is initialized and the spring 64 is contracted to form a gap between the pressing plate 66 and the blade 42.
Next, the process proceeds to S102, the conveyance motor 56 is driven, and conveyance of the recording sheet 5 is started.
[0050]
In S103, it is detected whether or not the thickness of the recording sheet 5 is measured by the displacement sensor 37 with the transport motor 56 being driven. The displacement sensor 37 is set so as to automatically measure the thickness of the recording sheet 5 when the recording sheet 5 comes to the detection position of the displacement sensor 37.
[0051]
If it is determined in S103 that the displacement sensor 37 is not measuring the thickness of the recording sheet 5 (S103: NO), S103 is repeated until the displacement sensor 37 measures the thickness of the recording sheet 5, and the displacement sensor 37 is recorded. If it is determined that the thickness 5 is measured (S103: YES), the process proceeds to S104.
[0052]
In S104, based on the measurement result of the thickness of the recording sheet 5 by the displacement sensor 37, the curvature adjusting motor 38 is driven to change the curvature of the curved surface portion 24A formed by the elastic plate guide 24.
Here, the operation of changing the curvature of the curved surface portion 24 </ b> A performed in S <b> 104 is performed by the control device 51 controlling a driving pulse for driving the curvature adjusting motor 38. This operation is set to be completed before the leading edge of the recording sheet 5 reaches the curved surface portion 24A, and when S104 ends, the process proceeds to S105.
[0053]
In addition, before the transition from S104 to S105, the recording sheet 5 is sandwiched between the elastic plate guide 24 and the conveying roller 31, and the elastic plate guide 24 and the guide roller 30 to the curved surface portion 24A of the elastic plate guide 24. When the sheet is conveyed and passes through the curved surface portion 24A, an appropriate bending stress is applied, and the recording material 5B is damaged. The recording sheet 5 is conveyed in the direction of the peeling device 40 after bending stress is applied by the elastic plate guide 24.
[0054]
In S101, since a gap is formed between the blade 42 and the pressing plate 66, the leading edge of the recording sheet 5 can easily pass through the blade 42 and reach the conveying roller 32.
In S105, it is determined whether or not the position sensor 41 has detected the leading edge of the recording sheet 5, and if it is determined that the position sensor 41 has not detected the leading edge of the recording sheet 5 (S105: NO), the position sensor 41 is not detected. S105 is repeated until the leading edge of the recording sheet 5 is detected, and if it is determined that the position sensor 41 has detected the leading edge of the recording sheet 5 (S105: YES), the process proceeds to S106.
[0055]
In S106, after the recording sheet 5 is detected by the position sensor 41, it is determined whether or not the recording sheet 5 has been conveyed by a predetermined distance, and whether or not the recording sheet 5 can be conveyed by the conveyance roller 32 is confirmed. Here, the determination as to whether or not the predetermined distance of conveyance has been performed in S <b> 106 is made based on a drive pulse for driving the conveyance motor 56 by the controller 51.
[0056]
If it is determined that the predetermined distance has not been transferred (S106: NO), S106 is repeated, and if it is determined that the predetermined distance has been transferred (S106: YES), the process proceeds to S107.
In S107, the control to extend the spring 64 is performed, and the pressing plate 66 is urged toward the blade 42 with a predetermined pressing force. At this time, the recording sheet 5 is sandwiched between the pressing plate 66 and the blade 42 and conveyed in this state, whereby an operation of peeling the recording material 5B from the recording sheet 5 is started.
[0057]
The distance between the blade 42 and the conveyance roller is set to be shorter than the margin when the recording material 5B is attached to the recording sheet 5 (that is, when an image is formed). Further, when the recording material 5B is peeled from the recording sheet 5, the recording medium 5 is peeled while being pulled by the conveying roller 32, thereby preventing the recording medium from being bent.
[0058]
Next, the process proceeds to S108, where it is determined whether or not the position sensor 41 has detected the trailing edge of the recording sheet 5, and if it is determined that the position sensor 41 has not detected the trailing edge of the recording sheet 5 (S108: NO), S108 is repeated, and if it is determined that the position sensor 41 has detected the trailing edge of the recording sheet 5 (S108: YES), the process proceeds to S109.
[0059]
In S109, after the recording sheet 5 is detected in S108, a predetermined distance is conveyed, and it is determined whether or not the recording sheet 5 is discharged from the reproducing apparatus 1. Here, the determination as to whether or not the sheet has been conveyed for a predetermined distance in S109 is made by a drive pulse for driving the conveyance motor 56 by the control device 51 as in the case of S106.
[0060]
If it is determined that the predetermined distance has not been transferred (S109: NO), S109 is repeated, and if it is determined that the predetermined distance has been transferred (S109: YES), the process proceeds to S110.
Finally, in S110, the movement of the transport rollers 31 to 34 is stopped, and the recording medium reproduction control is finished.
[0061]
An experiment for peeling the recording material 5B from the recording sheet 5 was performed using the reproducing apparatus 1 described in detail above.
On the recording sheet 5, a 3 μm thick adhesive layer was formed on both sides of a white polyethylene terephthalate film (made by Toray) containing 50 μm thick titanium oxide, and a 25 μm polymethylhenten film (Mitsui). A product made by bonding (made by chemical) was used.
[0062]
The image forming apparatus for printing on the recording sheet 5 was printed using a laser printer (Brother, HL-1440).
The image formed on the recording sheet 5 had good print contrast, and good print without curling was performed on the recording medium.
[0063]
Even if the printed recording sheet 5 was subjected to a five-way rubbing test with a load of 300 g of linen cloth using a friction fastness tester (manufactured by DAIEI KAGAKA SEIKI, RT-200), no toner peeling was observed. It was confirmed that good fixability was obtained.
[0064]
Bending deformation is applied with a radius of curvature of 2 mm, 3 mm, 8 mm, and 30 mm so that the recording surface 5A of the recording sheet 5 is on the inside, and the surface is scratched with a blade 42 (the angle of the edge portion 42A is 90 degrees, zirconia). As a result, the load between the blade 42 and the pressing plate 66 could be peeled off at 300 gf when the radius of curvature was 2 mm to 8 mm and 400 gf when 30 mm.
[0065]
When the recording sheet 5 was not subjected to bending deformation, a load of 500 gf was necessary.
Further, when the surface of the recording sheet 5 which was bent and deformed with a curvature radius of 2 mm and 3 mm without being peeled off by the blade 42 was visually observed, it was found that the toner on the sheet surface was cracked.
[0066]
Next, effects obtained when using the playback apparatus 1 described above will be described below.
(1) Since the curvature adjusting mechanism 20 can change the curvature that causes the recording sheet 5 to be curved in accordance with the type of the recording sheet 5, the reproducing apparatus 1 damages the recording material 5B on the recording sheet 5. When the recording material 5B is peeled from the recording sheet 5, the load applied to the recording sheet 5 can be reduced, the recording material 5B on the recording sheet 5 is removed without damaging the recording sheet 5, and the recording sheet 5, a new image can be formed.
[0067]
(2) Further, the curvature adjusting mechanism 20 includes an elastic plate guide 24 having a curved surface portion 24A, and changes the pressing force applied to the curved surface portion 24A by a guide presser 26 that presses the elastic plate guide 24 from the outside. Since the curvature of 24A is changed, the curvature for bending the recording sheet 5 can be changed only by changing the pressing force applied to the curved surface portion 24A by the guide presser 26, and the entire reproducing apparatus 1 is simplified. be able to.
[0068]
(3) Furthermore, since the elastic plate guide 24 of the reproducing apparatus 1 is composed of a leaf spring made of a SUS thin plate, the durability of the reproducing apparatus 1 can be improved and the curvature of the curved surface portion 24A can be easily increased. Can be changed.
(4) Further, since the curvature adjusting mechanism 20 bends the recording sheet 5 with the surface of the recording sheet 5 to which the recording material 5B is attached being inward, the surface of the recording sheet 5 to which the recording material 5B is attached is facing outward. Even if the curvature of bending the recording sheet 5 is larger than that of bending, the recording material 5B can be effectively damaged, and the recording sheet 5 can be made more difficult to be damaged.
[0069]
(5) Next, the peeling device 40 for peeling the recording material 5B from the recording sheet 5 includes an edge portion 42A composed of two planes intersecting, and the edge portion 42A is in contact with the recording sheet 5. Since the recording sheet 5 is moved, the recording material 5B can be reliably peeled from the recording sheet 5.
[0070]
(6) When the leading edge of the recording sheet 5 passes through the peeling device 40, a gap is formed between the peeling device 40 and the guide presser 26, and the leading edge of the recording sheet 5 passes through the peeling device 40. After that, since the recording sheet 5 is sandwiched between the peeling device 40 and the guide presser 26, the leading edge of the recording sheet 5 collides with the peeling device 40, and the recording sheet 5 is bent, so that the recording sheet 5 is damaged. The recording material 5B can be peeled off from the recording sheet 5 after the leading edge of the recording sheet 5 has passed through the peeling device 40 without being damaged. be able to.
[0071]
In the following, modifications of the playback device 1 will be described.
In the reproducing apparatus 1 of the present embodiment (embodiment 1), the peeling device 40 includes a blade 42, and the recording sheet 5 is conveyed in a state where the edge portion 42A of the blade 42 is in contact with the recording sheet 5. 5 is peeled off. In particular, the peeling device 40 does not need to include the blade 42. For example, as shown in FIG. 5, the peeling device 40 includes a brush 92. Also good. FIG. 5 is a schematic configuration diagram of the peeling device 90.
[0072]
The peeling device 90 rotates to rotate the brush 92 in a direction opposite to the traveling direction of the recording sheet 5 (clockwise in FIG. 5), which is positioned so as to oppose the pressing plate 66 and the recording sheet 5. And a motor (not shown).
The position of the pressing plate 66 is adjusted by the spring 64 so that the recording sheet 5 is in contact with the tip of the brush 92. The recording sheet 5 is moved from the left end in FIG. 5 by the conveying rollers 31 to 34 (see FIG. 1). At this time, the recording material 5B is peeled off from the recording sheet 5 by the tip of the brush 92 rotating in the direction opposite to the traveling direction of the recording sheet 5 by the rotating motor rubbing the recording surface 5A.
[0073]
Even when the peeling device 90 including the brush 92 is used as described above, the recording material 5B can be reliably peeled from the recording sheet 5 as in the case of using the peeling device 40 including the blade 42 described above. .
Further, if the peeling device 90 provided with the brush 92 is used, the recording sheet 5 can be made less likely to be damaged than when the peeling device 40 provided with the blade 42 is used.
[0074]
Further, since the brush 92 is rotated in the direction opposite to the direction in which the recording sheet 5 moves, the recording material 5B can be easily peeled from the recording sheet 5.
Note that the brush 92 used in the peeling device 90 does not need to be rotated as described above. Even in the peeling device 90 having the non-rotating brush 92, the tip of the brush 92 has a structure that rubs the recording surface 5A. Any brush 92 may be used.
[0075]
The material of the brush 92 may be anything as long as it is soft and does not damage the recording surface 5A, such as a resin such as polypropylene or polyethylene, an elastomer such as synthetic rubber, or a thin metal wire.
Further, the peeling device 90 in the present embodiment (embodiment 1) is not limited to being provided with the above-described blade 42 and brush 92, and is intended to rub the recording surface 5A. Any structure and material may be used as long as they do not damage the recording surface 5A. For example, a resin sponge or cloth wipe may be used.
[0076]
Furthermore, in the reproducing apparatus 1 of the present embodiment (embodiment 1), an elastic plate guide 24 is a SUS thin plate having a thickness of 100 μm. It may be a thin metal plate (spring plate).
The blade 42 is made of zirconia, but is not limited to zirconia. For example, ceramic materials such as tungsten carbide, metal materials such as stainless steel and titanium alloy, polycarbonate, ABS resin, polyphenylene sulfide, and polyether ether. Even a plastic material such as ketone or polyether sulfone, a material such as glass, diamond or the like may be used as long as it has the hardness and durability necessary for peeling the recording material 5B from the recording sheet 5.
[0077]
Further, although the ultrasonic sensor is used for the displacement sensor 37 and the thickness of the recording sheet 5 is measured, the method is not limited to the ultrasonic sensor. However, any method may be used as long as the thickness of the recording sheet 5 can be measured.
[0078]
Moreover, although the mechanical sensor was employ | adopted as the position sensor 41, it may not be a mechanical type in particular, For example, the optical sensor etc. which have a light emission part and a light-receiving part may be sufficient.
Further, in the reproducing apparatus 1 of the present embodiment (first embodiment), the pressing plate 66 is retracted downward until the leading edge of the recording sheet 5 passes through the peeling device 40, so that the peeling device 40 and the pressing plate 66 are However, the peeling device 40 may be retracted upward without retracting the pressing plate 66 downward.
[0079]
Furthermore, in the reproducing apparatus 1 of the present embodiment (embodiment 1), the curvature adjustment motor 38 and the conveyance rollers 31 to 34 are controlled by drive pulses from the control device 51. For example, the curvature adjustment screw 28 and the conveyance roller are controlled. An angle sensor or the like such as an encoder may be disposed on the rollers 31 to 34, and the curvature adjustment motor 38 and the conveyance rollers 31 to 34 may be controlled based on the detection of the angle sensor.
[0080]
Even in the above-described manner, the recording material 5B on the recording sheet 5 can be removed without damaging the recording sheet 5 so that a new image can be formed on the recording sheet 5.
[Example 2]
Next, another embodiment of the playback apparatus 2 (Example 2) will be described.
[0081]
Here, the reproducing apparatus 1 described in detail in the first embodiment and the reproducing apparatus 2 of the present embodiment (second embodiment) are the same except for the curvature adjusting mechanism 20. Therefore, the same parts as those of the reproducing apparatus 1 of the first embodiment are denoted by the same reference numerals in the reproducing apparatus 2 of the present embodiment, the description thereof is omitted, and only different parts are described in detail.
[0082]
FIG. 6 shows the reproducing apparatus 2 of the present embodiment (second embodiment).
The playback device 2 includes a curvature adjustment mechanism 70 instead of the curvature adjustment mechanism 20 provided in the playback device 1 of the first embodiment.
The curvature adjusting mechanism 70 includes curved portions 71A to E having different curvatures, and a rotating body 71 having a guide roller 30 that is biased to the curved portions 71A to E (curved members in the present invention) by springs 73, and A curvature adjusting motor (see FIG. 7).
[0083]
The rotating body 71 is disposed on a path through which the recording sheet 5 passes so as to be rotatable about the rotating shaft 72.
In the reproducing apparatus 1 of the first embodiment, the spring 35 supports the guide roller 30 and the conveying roller 31, but the guide roller 30 in the reproducing apparatus 2 of the second embodiment is supported by the spring 73 and rotates. In order to move integrally with the body 71, the spring 35 supports only the transport roller 31.
[0084]
Next, when the reproducing apparatus 2 changes the curvature for bending the recording sheet 5 according to the thickness of the recording sheet 5 (S104 in FIG. 4), as shown in the block diagram of FIG. Based on the detection by the displacement sensor 37, the curvature adjusting motor 38 is driven to rotate the rotating body 71 (rotating shaft 72) by a certain angle. Then, the curved surface portions 71 </ b> A to 71 </ b> E having an appropriate curvature are moved on the path of the recording sheet 5.
[0085]
Thereafter, the recording material 5B is peeled off from the recording sheet 5 in the same manner as the reproducing apparatus 1 of the first embodiment.
The same effects as (1) and (4) to (6) described in the first embodiment can be obtained by using the reproducing apparatus 2 of the second embodiment configured as described above, and similar modifications can be considered. In particular, in the reproducing apparatus 2 according to the second embodiment, the curvature adjusting mechanism 70 positioned on the path of the recording sheet 5 is changed to another curvature adjusting mechanism 70 to be used, thereby bending the recording sheet 5. Therefore, when the recording sheet 5 is bent, the recording sheet 5 can be bent while always maintaining the curvature for bending the recording sheet 5 in an optimum state according to the type of the recording sheet 5.
[0086]
In the present embodiment (embodiment 2), the curvature adjusting mechanism 20 having a plurality of curved surface portions having different curvatures is used so as to be automatically switched according to the thickness of the recording sheet 5. For example, as shown in FIG. 8, the curvature adjustment mechanism 80 includes a transport roller 31, a guide roller 30, and a guide member 82, and can be attached to and detached from the support plate 22 in which the concave portion 84 </ b> A is formed. According to the type of the recording sheet 5, the curvature adjusting mechanism 80 may be manually replaced with a curvature adjusting mechanism 80 including a guide member 82 having a different curvature.
[0087]
Even in this manner, the recording material 5B on the recording sheet 5 can be removed without damaging the recording sheet 5, and a new image can be formed on the recording sheet 5.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram illustrating a playback apparatus according to a first embodiment.
FIG. 2 is a cross-sectional view taken along a plane along the traveling direction of the recording medium in the vicinity of the curvature adjusting mechanism.
FIG. 3 is a block diagram showing an electrical or mechanical coupling relationship of each part constituting the reproducing apparatus according to the first embodiment.
FIG. 4 is a flowchart showing recording medium reproduction control.
FIG. 5 is a schematic configuration diagram showing a peeling device according to a modified example.
FIG. 6 is a schematic configuration diagram illustrating a playback device according to a second embodiment.
FIG. 7 is a block diagram showing an electrical or mechanical coupling relationship of each part constituting the reproducing apparatus according to the second embodiment.
FIG. 8 is a cross-sectional view showing a modification of the curvature adjusting mechanism in the reproducing apparatus of the second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1, 2 ... Playback apparatus, 5 ... Recording sheet, 5A ... Recording surface, 5B ... Recording material, 20 ... Curvature adjustment mechanism, 22 ... Support plate, 24 ... Elastic plate guide, 24A ... Curved surface part, 26 ... Guide press, 28 ... curvature adjusting screw, 30 ... guide roller, 31-34 ... conveying roller, 35 ... spring, 37 ... displacement sensor, 38 ... curvature adjusting motor, 40 ... peeler, 41 ... position sensor, 42 ... blade, 42A ... edge part , 51 ... Control device, 52 ... I / O interface, 53 ... CPU, 54 ... ROM, 55 ... RAM, 56 ... Conveyance motor, 60 ... Presser, 62 ... Support base, 64 ... Spring, 66 ... Press plate, 70 ... Curvature adjusting mechanism, 71 ... rotating body, 71A to E ... curved surface portion, 72 ... rotating shaft, 73 ... spring, 80 ... curvature adjusting mechanism, 82 ... guide member, 84A ... recess, 90 ... peeler, 92 ... brush.

Claims (9)

A peeling member for peeling the recording material adhering to the surface of the recording medium from the recording medium;
Conveying means for peeling the recording material from the recording medium by moving the recording medium relative to the peeling member;
Bending means for bending the recording medium before peeling of the recording material by the peeling member;
A curvature adjusting mechanism for changing a curvature when the bending means bends the recording medium;
Changing means for changing the curvature by which the bending means bends the recording medium by driving the curvature adjusting mechanism according to the type of the recording medium;
With
The bending means includes
A guide member having a curved surface portion and capable of changing the curvature of the curved surface portion by elastic deformation;
The recording medium is curved by passing the recording medium along a curved surface portion of the guide member,
The changing means, wherein the support member for pressing the guide member from the outside, by changing the pressing force applied to the curved surface portion, the recording medium reproducing apparatus characterized by changing the curvature of the curved surface portion. The recording medium reproducing apparatus according to claim 1 , wherein the guide member includes a leaf spring. A peeling member for peeling the recording material adhering to the surface of the recording medium from the recording medium;
Conveying means for peeling the recording material from the recording medium by moving the recording medium relative to the peeling member;
Bending means for bending the recording medium before peeling of the recording material by the peeling member;
A curvature adjusting mechanism for changing a curvature when the bending means bends the recording medium;
Changing means for changing the curvature by which the bending means bends the recording medium by driving the curvature adjusting mechanism according to the type of the recording medium;
With
As the bending means comprises a plurality of curved section curvature for bending different said recording medium,
The changing means, the bending means located on the path of the recording medium, by using change in other curved section, the recording medium reproducing apparatus characterized by varying the curvature of curving the recording medium . A peeling member for peeling the recording material adhering to the surface of the recording medium from the recording medium;
Conveying means for peeling the recording material from the recording medium by moving the recording medium relative to the peeling member;
Bending means for bending the recording medium before peeling of the recording material by the peeling member;
A curvature adjusting mechanism for changing a curvature when the bending means bends the recording medium;
With
The curvature adjusting mechanism includes the bending means,
The curvature adjustment mechanism, the recording medium reproducing apparatus characterized in that it is replaceably configured by other curvature adjustment mechanism provided other curved section, which is set to different curvatures and manual. The recording medium reproducing apparatus according to claim 1 , wherein the bending unit bends the recording medium with an inner surface of the recording medium to which a recording material is attached. The peeling member has an edge portion that is an intersection line of two planes,
2. The recording material is peeled from the recording medium by the relative movement of the peeling member and the recording medium by the conveying means in a state where the edge portion is in contact with the recording medium. The recording medium reproducing device according to claim 5 . The recording medium reproducing apparatus according to claim 1 , wherein the peeling member includes a brush. 8. The recording medium reproducing apparatus according to claim 7 , further comprising rotating means for rotating the brush in a direction opposite to a direction in which the brush moves relative to the recording medium. A pressing member that is disposed so as to be relatively displaceable with the peeling member, and that can sandwich the recording medium in pairs with the peeling member;
By displacing at least one of the peeling member and the pressing member, a gap is formed between the peeling member and the pressing member when the tip of the recording medium passes through the peeling member, and the recording medium A pressure control means for sandwiching the recording medium between the peeling member and the pressing member after the tip of the sheet passes through the peeling member;
The recording medium reproducing apparatus according to claim 1 , comprising:

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