JP2005181692A - Apparatus and method for recycling recorded medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus and a method for recycling a recorded medium by which a recording material can be peeled off from the recoeded suitably by carrying out a control according to the characteristic of the recorded medium. <P>SOLUTION: The apparatus 1 for recycling the recorded medium 10 detects rigidity and thickness of the recorded medium 10 and surface roughness of a recording surface 10a. From each value, destructive curvature necessary to destruct the recording material 11 and marginal curvature at which the recorded medium 10 is not permanently deformed are calculated. From these values, when the destructive curvature is less than the marginal curvature, the curvature is set to be the destructive curvature and in other cases, the curvature is set to be the marginal curvature and bending stress applied to the recording material 11 is adjusted. Furthermore, when the recording material 11 is not sufficiently destroyed since the curve was carried out in the marginal curvature, the pressurizing force in the case of pressing the recorded medium 10 to a blade 41 is increased. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a recording medium reproducing apparatus and reproducing method that can erase an image on a recording medium formed by an image forming apparatus such as an electrophotographic printer or a printer, and can use the recording medium a plurality of times.

  Image forming apparatuses that form images on recording media such as paper and resin are widely used, and a large amount of recording media is consumed every day. Since most of the recording medium consumed in large quantities is used for temporary information transmission, many recording media become waste, which is not preferable from the viewpoint of environmental protection.

  Therefore, from the viewpoint of reusing the recording medium, an apparatus for removing the recording material from the recording medium on which an image has been formed by an image forming apparatus such as a copying machine or a printer and reproducing the recording medium has been proposed ( (See Patent Documents 1 and 2).

The reproducing apparatus described in Patent Document 1 uses a removing means having a blade-shaped end portion to move the end portion of the end portion in contact with the surface of the recording medium, thereby peeling the recording material on the surface. To reproduce the recording medium. Further, the reproducing apparatus described in Patent Document 2 uses a dedicated sheet having a water-swellable surface layer as a recording medium, immerses the recording medium in a liquid mainly containing water, and records the recording material and the recording medium. In the method in which the recording material is peeled off with a brush or the like by reducing the contact force of the recording medium, the recording medium to which the recording material is attached is bent before the recording medium is immersed in the liquid, and bending stress is applied to the recording material and the recording medium. Generate and destroy the layered recording material.
JP 2002-72794 A JP 2001-337570 A

However, the reproducing apparatus described in Patent Document 1 moves while the tip of the blade-shaped end is in contact with the surface of the recording medium in order to peel off the recording material on the surface. Is constant regardless of the type of recording medium and the adhesion of the recording material. Therefore, depending on the recording medium, the recording material may not be sufficiently peeled off from the recording medium or the surface of the recording medium may be damaged, so that the recording medium may not be sufficiently reproduced.
On the other hand, the reproducing apparatus described in Patent Document 2 reduces the force required to peel the recording material from the recording medium by destroying the layered recording material before the step of peeling the recording material from the recording medium. It is possible to prevent the surface of the recording medium from being damaged. However, since the radius of curvature of the bending means for generating a bending stress in the recording medium is constant for the purpose of destroying the layered recording material, the recording medium may be permanently deformed depending on the recording medium. . In addition, the adhesive force of the recording material differs depending on the surface shape of the recording medium, or there may be a case where sufficient bending stress cannot be generated depending on the thickness of the recording medium, and the recording material cannot be completely peeled off. There is.

  The present invention has been made in order to solve the above-mentioned problems, and a recording medium reproducing apparatus for suitably separating a recording material from a recording medium by performing control according to the characteristics of the recording medium. And a reproduction method.

  In order to achieve this object, a recording medium reproducing apparatus according to claim 1 is provided with a removing means for removing recording material adhering to the surface of the recording medium from the recording medium; It is characterized by comprising detecting means for detecting characteristics and control means for controlling the removing means in accordance with the characteristics of the recording medium detected by the detecting means.

  The recording medium reproducing apparatus according to claim 2 is the recording medium reproducing apparatus according to claim 1, wherein the removing means presses the blade against the recording medium. And a pressing means, wherein the control means controls the pressing force of the blade by the pressing means.

  The recording medium reproducing apparatus according to claim 3 is the recording medium reproducing apparatus according to claim 1, wherein the removing unit is a rotating member, and the control unit controls the rotation of the rotating member. It is characterized by doing.

  According to a fourth aspect of the present invention, there is provided a reproducing apparatus for a recording medium according to the first aspect, further comprising conveying means for conveying the recording medium, the removing means is a rotating member, and the control The means controls the transport speed of the recording medium transported by the transport means.

  A reproducing apparatus according to a fifth aspect is the recording medium reproducing apparatus according to any one of the first to fourth aspects, wherein the detection means is a recording medium attached to the surface of the recording medium. It has the adhesive force detection means which detects adhesive force, It is characterized by the above-mentioned.

  According to a sixth aspect of the present invention, there is provided a reproducing apparatus for a recording medium according to the fifth aspect, wherein the adhesion force detecting means detects the adhesion force based on the roughness of the surface of the recording medium. Features.

  The reproduction apparatus according to claim 7 is the reproduction apparatus for the recording medium according to claim 6, wherein the adhesive force detection unit irradiates light onto the surface of the recording medium, and the irradiation unit A light receiving unit that receives reflected light of the light emitted by the light receiving unit, and detecting the adhesion force by a difference between an amount of light emitted by the irradiation unit and an amount of light received by the light receiving unit. Features.

  The reproducing apparatus according to claim 8 is the reproducing apparatus for the recording medium according to claim 6, wherein the adhesive force detecting means has a contact portion that contacts the surface of the recording medium, and the recording medium The adhesive force is detected by the vibration of the contact portion that vibrates on the surface of the surface according to roughness.

  The recording medium reproducing apparatus according to claim 9, a conveying unit that conveys the recording medium having a recording material attached to a surface thereof, a bending unit that curves the recording medium conveyed by the conveying unit, and A recording medium reproducing apparatus comprising: a removing unit configured to remove the recording material from the recording medium after the recording medium is bent by the bending unit, wherein the recording medium is attached to a surface of the recording medium. An adhesion force detecting means for detecting the adhesion force of the recording material, and the bending means are controlled based on the adhesion force detected by the adhesion force detection means so as to have a breaking curvature necessary for destroying the recording material. And a control means.

  The reproducing apparatus according to claim 10 is the reproducing apparatus for the recording medium according to claim 9, wherein the adhesion detecting means irradiates the surface of the recording medium with light, and the irradiating section. A light receiving portion that receives reflected light of the light emitted by the light receiving portion, and the adhesion force is reduced by the difference between the amount of light irradiated by the irradiation portion and the amount of light received by the light receiving portion. It is characterized by having a detection by.

  The reproducing apparatus according to claim 11 is the recording medium reproducing apparatus according to claim 9, wherein the adhesive force detecting means includes a contact portion that contacts a surface of the recording medium, and the recording medium The adhesive force is detected by the vibration of the contact portion that vibrates according to the surface roughness of the surface.

  A reproducing apparatus according to a twelfth aspect is the reproducing apparatus for a recording medium according to any one of the ninth to eleventh aspects, wherein the detecting means includes a rigidity detecting means for detecting the rigidity of the recording medium. Further, the control means further calculates a limit curvature for preventing the recording material detected by the stiffness detection means from being permanently deformed, and as a result of comparing the fracture curvature with the limit curvature, the fracture curvature is calculated as the limit curvature. When the curvature is equal to or less than the curvature, the bending means is set to the breaking curvature, and when the breaking curvature is larger than the limit curvature, the bending means is set to the limit curvature. .

  A reproducing apparatus according to a thirteenth aspect of the present invention is the recording medium reproducing apparatus according to the twelfth aspect, wherein the stiffness detecting means detects the stiffness by the amount of natural deflection from one end of the recorded medium to a predetermined length. It is characterized by doing.

  A reproducing apparatus according to a fourteenth aspect is the recording medium reproducing apparatus according to the twelfth aspect, wherein the stiffness detecting means detects the stiffness based on a deformation amount when a load is applied to the recorded medium. It is characterized by that.

  The reproducing apparatus according to claim 15 is the reproducing apparatus for the recording medium according to claim 12, wherein the rigidity detecting means has a rigidity by a pressing force required to deform the recording medium into a predetermined shape. Is detected.

  A reproducing device according to claim 16 is the reproducing device for a recording medium according to any one of claims 12 to 15, wherein the control means controls a removing force in the removing means according to a curvature. It is further characterized by further comprising a removal force control means.

  The reproducing device according to claim 17 is the recording medium reproducing device according to claim 16, wherein the removing means includes a blade and a pressing means for pressing the blade against the recording medium. The removing force control means controls the pressing force of the blade by the pressing means.

  A reproducing apparatus according to an eighteenth aspect is the recording medium reproducing apparatus according to the sixteenth aspect, wherein the removing unit is a rotating member, and the removing force control unit controls the rotation of the rotating member. It is characterized by.

  A reproducing apparatus according to claim 19 is the recording medium reproducing apparatus according to claim 16, wherein the removing means is a rotating member, and the removing force control means is conveyed by the conveying means. It is characterized in that the conveyance speed of the recording medium is controlled.

  A reproducing apparatus according to a twentieth aspect of the present invention is the reproducing apparatus for a recording medium according to any one of the twelfth to nineteenth aspects, wherein the detecting means determines the recording medium from the thickness of the recording medium. It further comprises an effective curvature calculating means for calculating an effective curvature, wherein the fracture curvature is calculated from the adhesion force and the effective curvature obtained by the adhesion force detection means and the effective curvature calculation means. To do.

  A reproducing apparatus according to a twenty-first aspect is the recording medium reproducing apparatus according to the twentieth aspect, in which the effective curvature calculating unit irradiates light onto a surface of the recording medium; A light receiving unit that receives light reflected by the recording medium, and calculating the effective curvature based on a position of the light received by the light receiving unit.

  A recording medium reproduction method according to claim 22, wherein the recording medium is reproduced by removing a recording material from the recording medium, wherein the recording medium is conveyed; and A detecting step for detecting characteristics of the recording medium, a bending step for destroying the recording material by bending the recording medium conveyed by the conveying step, and a curvature by the bending step are detected by the detecting step. The recording material adjusted by the characteristics of the recorded medium, the removal step of removing the destroyed recording material, and the removal material according to the curvature adjusted by the curvature control step. And a removal force control step for controlling a removal force for removing the water.

  A reproducing method according to a twenty-third aspect is the reproducing method of a recording medium according to the twenty-second aspect, in which the curvature control step includes a destructive curvature necessary for destroying the recording material, and the recording medium. It is set by the limit curvature for preventing permanent deformation.

  A reproducing method according to a twenty-fourth aspect is the reproducing method of a recording medium according to the twenty-second aspect, wherein the detection step includes an adhesion force of the recording material adhered to the recording medium and a thickness of the recording medium. The stiffness of the recording medium is detected, the fracture curvature is calculated from the adhesive force of the recording material detected by the detection step and the thickness of the recording medium, and the limit curvature is detected by the detection means. It is calculated by the stiffness of the recording medium.

  According to the reproducing apparatus of the first aspect, the removing means removes the recording material adhering to the surface of the recording medium from the recording medium, and the detecting means detects the characteristics of the recording medium. The control means controls the removing means according to the characteristics of the recording medium detected by the detecting means.

  Thus, when removing the recording material, the removing means is controlled in accordance with the characteristics of the recording medium, so that the recording material can be surely removed without damaging the recording medium.

  In the reproducing apparatus according to any one of claims 2 to 4, since the control unit controls the pressing force of the blade, the rotation of the rotating member, and the like, the blade or the rotating member as the removing unit is transferred from the recording medium to the recording material. Can be reliably peeled off.

  In the reproducing apparatus according to claims 5 and 6, the adhesion detecting means detects the adhesion of the recording material adhering to the surface of the recording medium, and the adhesion detecting means detects the roughness of the surface of the recording medium. To detect. In this way, by detecting the adhesive force of the recording material adhering to the recording medium from the surface roughness of the recording medium, the peeling force can be adjusted by the adhesive force of the recording material, and the recording material can be reliably covered. It can be peeled from the recording medium. In addition, as described in claims 7 and 8, the adhesive force detection means detects the roughness of the surface of the recording medium, thereby reliably removing even the recording material on the surface of the recording medium that is uneven. can do.

  In the reproducing apparatus according to the ninth aspect, the conveying unit conveys the recording medium having the recording material attached to the surface, and the bending unit bends the recording medium conveyed by the conveying unit. After the recording medium is bent by the bending means, the removing means removes the recording material from the recording medium. The detecting means detects the characteristics of the recording medium. The detection means includes adhesion force detection means for detecting the adhesion force of the recording material adhering to the surface of the recording medium. The control means calculates and sets the fracture curvature necessary for destroying the recording material from the adhesive force detected by the adhesive force detection means, so that the bending means can bend from the characteristics of the recording medium detected by the detection means. The curvature of the recording medium to be controlled is controlled.

  According to such a configuration, the curvature necessary for destroying the recording material from the recording medium by the bending means is calculated and controlled from the characteristics of the recording medium, so that the adhesion force of the recording material adhering to the recording medium is controlled. Even if they are different, the recording material can be surely removed.

  According to the reproducing apparatus according to claim 10 and 11, since the adhesion detecting means detects the roughness of the surface of the recording medium, even the recording material on the surface of the uneven recording medium is surely removed. can do.

  In the reproducing apparatus according to the twelfth aspect, the control means further calculates a limit curvature for preventing the recording material from being permanently deformed from the stiffness detected by the stiffness detection means. As a result of comparing the fracture curvature with the limit curvature, the fracture curvature is set when the fracture curvature is equal to or less than the limit curvature, and is set as the limit curvature when the fracture curvature is larger than the limit curvature. Therefore, even if the recording medium is susceptible to damage such as bending, the recording medium is not curved up to the curvature causing the damage, so that permanent deformation of the recording medium is prevented.

  In the reproducing apparatus according to the thirteenth to fifteenth aspects, the stiffness detecting means can detect the stiffness, so that the limit curvature can be calculated with certainty, and the recording medium can be prevented from being permanently deformed.

  In the reproducing apparatus according to the sixteenth aspect, the removal force control means controls the removal force for removing the recording material by the removal means in accordance with the curvature of the recording medium. Therefore, even when the recording medium is easily damaged and the recording medium cannot be sufficiently bent, the recording material can be reliably removed from the recording medium by controlling the removal force.

  According to the reproduction device of claims 17 to 19, since the method of controlling the removal force can be changed according to the type of the removal means, the removal force can be controlled by the method according to the characteristics of the removal means. it can.

  In the reproducing apparatus according to claim 20, since the fracture curvature is calculated from the adhesive force and the effective curvature obtained by the adhesive force detection means and the effective curvature calculation means, the fracture curvature necessary for destroying the recording material. However, it is judged from both the effective curvature that varies depending on the thickness of the recording medium and the adhesive force of the recording material adhering to the recording medium, and the recording material can be reliably destroyed.

  According to the reproducing apparatus of claim 21, since the light irradiated on the surface of the recording medium is reflected by the recording medium and the effective curvature is calculated from the position where the reflected light is received, the thickness of the recording medium is ensured. And the effective curvature can be calculated.

  In addition, according to the recording medium reproducing method described in claims 22 to 24, the characteristics of the recording medium are detected, and the curvature and the removal force are controlled according to the detected characteristics. The recording material can be reliably removed from the recording medium while preventing the recording material from being recorded.

Embodiments according to the present invention will be described below with reference to the drawings.
[Configuration of playback device]
FIG. 1 is a schematic configuration diagram of a playback apparatus (hereinafter referred to as a playback apparatus) 1 for a recording medium 10 according to the present embodiment.

  The reproducing apparatus 1 includes a bending portion (bending means) 20, a conveying means 30 (see FIG. 2), a peeling device (removing means) 40, and various detection means 50 (see FIG. 2).

  The bending portion 20 includes a guide bar 21, an elastic plate guide 22, a support plate 24, a guide presser 25, and a curvature adjusting screw 26. A curvature adjusting motor (curvature control means) 23 is connected to a control circuit (control means) 60 in order to adjust the curvature.

  The elastic plate guide 22 is made of a SUS thin plate having a thickness of 100 μm, and is supported by being curved by the support plate 24 and the guide presser 25. And the bending part 22a is formed between each supported part. As the elastic plate guide 22, a thin metal plate having elasticity such as spring steel can be used in addition to the SUS plate, and a thickness of about 50 to 150 μm is preferable. A guide bar 21 is disposed on the bent portion 22a of the elastic plate guide 22, and the guide bar 21 is pressed toward the bent portion 22a of the elastic plate guide 22 by a spring (not shown). When the recording medium 10 is transported between the guide bar 21 and the elastic plate guide 22, the recording medium 10 comes into contact with the elastic plate guide 22 by the guide bar 21. Therefore, the recording medium 10 is conveyed along the curved inner surface of the elastic plate guide 22.

  The curvature adjustment motor 23 controls the rotation speed of the curvature adjustment motor 23 based on the signal sent from the control circuit 60. The curvature adjusting screw 26 is rotationally driven by a curvature adjusting motor 23. A distal end portion of the curvature adjusting screw 26 is rotatably supported by the support plate 24. The support plate 24 is fixed inside the reproducing apparatus 1.

  The guide presser 25 is formed with a screw hole, and a curvature adjusting screw 26 is screwed into the screw hole. As the curvature adjusting screw 26 rotates, the guide presser 25 moves up and down. The curvature of the bent portion 22a of the elastic plate guide 22 can be changed by moving the guide presser 25.

  The transport unit 30 includes a transport motor 31 (see FIG. 2) and a plurality of transport rollers 32 to 36 that are rotationally driven by the transport motor 31. The pair of transport rollers 32 and 33 are disposed opposite to the downstream side in the transport direction (left side in FIG. 1) of the stiffness detection guide 51 included in the detection unit 50. The other pair of transport rollers 35 and 36 is disposed on the downstream side in the transport direction of the peeling device 40 (the right side in FIG. 1). In addition, one transport roller 34 is disposed between the transport rollers 32, 33 and 35, 36 and faces the guide presser 25. A spring (not shown) having one end fixed to the guide presser 25 is fixed to the transport roller 34, and the recording medium 10 is always brought into contact with the elastic plate guide 22 by the biasing force of this spring. ing. Each of the transport rollers 32 to 36 is rotationally driven by the transport motor 31 so that the recording medium 10 is sandwiched and transported.

  The peeling device 40 includes a rectangular plate-like blade 41. When the recording medium 10 is conveyed in a state where the edge portion 41a of the blade 41 is in uniform contact with the recording surface (front surface) 10a of the recording medium 10, the recording material 11 on the recording surface 10a is peeled off.

  The blade 41 needs to have hardness and durability necessary for peeling. For example, ceramic materials such as zirconia and tungsten carbide, metal materials such as stainless steel and titanium alloy, plastic materials such as polycarbonate, ABS resin, polyphenylene sulfide, polyetheretherketone and polyethersulfone, materials such as glass and diamond Can be used.

  Further, a peeling force adjusting motor 42 as a removing force control means, a support base 43, a spring 44, a rubber plate (pressing means) 45, and a support column 46 are disposed at a position opposite to the peeling device 40. . One end of the spring 44 is fixed to the support base 43, and a rubber plate 45 is attached to the other end. The rubber plate 45 presses the recording medium 10 conveyed under the pressing force of the spring 44 against the blade 41 side. The peeling force adjusting motor 42 moves the support base 43 up and down by moving up and down a support column 46 attached vertically to the support base 43.

  The recording material 11 adhered to the recording surface 10a of the recording medium 10 is bent and destroyed by the bending portion 20. Thereafter, the recording material 11 is peeled off by the edge portion 41 a of the blade 41. In order to bring the blade 41 into contact with the recording medium 10, the peeling force adjusting motor 42 is driven and the support base 43 is moved up and down. Since the pressing force transmitted from the spring 44 to the rubber plate 45 increases as the support base 43 moves upward, the peeling force of the peeling device 40 is adjusted.

  The curvature adjusting motor 23 and the peeling force adjusting motor 42 described above are connected to the control circuit 60. When output values of various sensors 52, 55, and 58 described later are input to the control circuit 60, set values are calculated. The driving of the motors 23 and 42 is controlled.

  The recording medium 10 is an image on which an image is formed by a printing apparatus such as a laser printer or an ink jet printer, and has a structure in which surface layers of the same material are provided on both surfaces of a sheet-like substrate. In this recording medium 10, the surface of the surface layer (that is, the outer surface of the recording medium 10) is a recording surface 10a on which an image is formed, and a recording material 11 that forms an image from this recording surface 10a. It becomes reusable when (for example, toner) is peeled off.

  For example, a recording medium 10 in which a surface sheet of an olefin material is bonded to a base material is preferable in that stable characteristics can be obtained. Considering the use environment at a high temperature such as a laser printer, it is particularly preferable to use polymethylbutene or polymethylpentene having a melting point of 160 ° C. or higher. In this case, polyethylene terephthalate or polycarbonate having a melting point of 160 ° C. or higher may be used as the base material.

  The base material preferably has a flexural modulus of 2000 MPa or more from the viewpoint that jam can be prevented by giving tension to the recording medium 10. Specifically, materials such as polyethylene terephthalate, polycarbonate, nylon, fluorine resin, polybutylene terephthalate, acrylic resin, polyphenylene sulfide, polyethersulfone, polyetheretherketone, polyetherimide, and the like can be used. Furthermore, a reinforced plastic obtained by adding an inorganic material or a fiber material to these materials, polypropylene, polyethylene, or the like can also be used.

  On the other hand, as the surface layer, a layer having a water contact angle of 80 ° or more is used in order to easily peel off the recording material. Furthermore, the contact angle of water is preferably less than 110 ° in terms of ensuring sufficient fixing properties (fixing strength) of the recording material. Further, the surface layer may be a surface sheet adhered or pressure-bonded to the substrate, or a surface agent coated on the substrate. As the surface sheet, for example, a material containing at least one kind of olefinic material (olefinic compound) or fluorine-based material such as polyethylene, polypropylene, polybutene, polymethylbutene, and polymethylpentene can be used. . On the other hand, as the surface agent, for example, a material containing at least one kind of silicone material, fluorine material, or the like can be used.

  The detection means 50 includes three types of rigidity detection means, thickness detection means, and adhesion force detection means. Among these, the limit curvature is obtained from the value detected by the stiffness detection means, the effective curvature is calculated from the thickness of the recording medium 10 detected from the thickness detection means, and the calculated effective curvature and adhesion force detection are calculated. The required fracture curvature is determined by the value of the adhesion force detected by the means. At this time, the means for calculating the effective curvature is the effective curvature calculating means.

  The stiffness detection means for detecting the stiffness of the recording medium 10 includes a stiffness detection guide 51 and a pressing force sensor 52. The stiffness detection guide 51 has a curved surface with a large radius of curvature, and the pressing force sensor 52 presses the recording medium 10 against the stiffness detection guide 51 and also presses the recording medium 10 against the stiffness detection guide 51 having a curved surface. A pressing force necessary to deform the recording medium 10 into a shape along the curved surface of the stiffness detection guide 51 is detected. If the recording medium 10 is made of a material having high rigidity, that is, a material that is likely to be permanently deformed by being bent, the pressing force is increased. On the contrary, if the material is low in rigidity, that is, made of a material that hardly causes permanent deformation, the pressing force becomes small. In this way, the stiffness of the recording medium 10 is measured by the pressing force sensor 52 and the stiffness detection guide 51.

  The thickness detection unit detects the thickness of the recording medium 10. The thickness detection unit includes a light emitting diode (irradiation unit) 54 and a light receiving position sensor (light receiving unit) 55. The light emitting diode 54 irradiates the recording medium 10 pressed against the stiffness detection guide 51 by the pressing force sensor 52 with light. The light receiving position sensor 55 detects the position at which the reflected light is received when the recording medium 10 reflects the light irradiated by the light emitting diode 54. At this time, the reflection position of the light changes depending on the thickness of the recording medium 10, and as a result, the position where the light receiving position sensor 55 receives light also changes. When the recording medium 10 is thin, the position of the reflected light is far from the light emitting diode 54 and the light receiving position sensor 55, and the position where the reflected light enters the light receiving position sensor 55 is downward. On the contrary, when the recording medium 10 is thick, the position of the reflected light is closer to the light emitting diode 54 and the light receiving position sensor 55, so that the reflected light is incident on the light receiving position sensor 55. The light receiving position sensor 55 generates a larger output as the light receiving position of the reflected light becomes higher, and the generated output value is sent to the control circuit 60. Then, the effective curvature calculation means calculates the effective curvature from the thickness detected by the thickness detection means.

  The adhesion force detecting means detects the adhesion force of the recording material 11 adhered to the recording medium 10 from the roughness of the surface of the recording medium 10. If the recording surface 10a to which the recording material 11 adheres is rough, the area where the recording material 11 is actually in contact increases. Accordingly, the rougher the recording surface 10a, the greater the adhesion force. The adhesion force detection means is located downstream of the conveyance rollers 32 and 33 in the conveyance direction opposite to the stiffness detection means and the adhesion force detection means, and includes a light emitting diode (irradiation unit) 57 and a light amount sensor (light reception unit) 58. And have. The light emitting diode 57 irradiates light onto the recording surface 10 a to which the recording material 11 of the recording medium 10 adheres. The light quantity sensor 58 detects the amount of light reflected by the recording surface 10a of the recording medium 10 among the light irradiated by the light emitting diode 57 and reflected at the reflection angle equal to the incident angle of the light. If the unevenness of the recording surface 10a of the recording medium 10 is small, much of the light from the light emitting diode 57 is reflected at a reflection angle equal to the incident angle. Therefore, the output of the light quantity sensor 58 that receives the light reflected by the surface of the recording medium is increased. On the contrary, if the recording surface 10 a of the recording medium 10 is uneven, most of the light from the light emitting diodes 57 is scattered on the surface of the recording medium 10. Accordingly, the amount of light received by the light amount sensor 58 decreases, and the output of the light amount sensor 58 decreases. In this way, the surface roughness of the recording medium 10 is measured by the light emitting diode 57 and the light amount sensor 58.

  Next, the control circuit 60 will be described with reference to FIG. FIG. 2 is a block diagram showing an electrical or mechanical coupling relationship of each part constituting the playback device 1.

  2, the control circuit 60 includes an input / output interface 61, a CPU 62, a ROM 63, and a RAM 64.

  The ROM 63 stores a program for driving the CPU 62. The CPU 62 performs various calculations based on programs stored in the ROM 63 and signals from the various sensors 52, 55, 58 input via the input / output interface 61. At this time, the RAM 64 is used as a work area when the CPU 62 performs calculations.

Thus, the output values sent from the various sensors 52, 55, and 58 are input to the control circuit 60, and the curvature set by the CPU 62 is calculated. Then, based on the calculated calculation result, the curvature adjustment motor 23, the conveyance motor 31, and the peeling force adjustment motor 42 are controlled. When the motors 23, 31, and 42 are driven in this way, the curvature adjusting screw 26, the conveying rollers 31 to 34, and the support column 46 are driven via a gear mechanism (not shown).
[Control method of playback device]
Next, the operation of the playback apparatus 1 will be described with reference to FIGS. FIG. 3 is a flowchart showing processing steps of the control circuit 60.

  First, as shown in FIG. 1, the recording surface 10a of the recording medium 10 is placed on the lower side, sandwiched between the transport roller 32 and the transport roller 33, and transported toward the elastic plate guide 22 by the transport motor 31 (see FIG. 2). . At this time, the curvature to be curved is set according to the characteristics of the recording medium 10 detected by the various detection sensors 52, 55, and 58. A method of setting the curvature will be described with reference to FIG.

  First, in step S <b> 101 of the flowchart of FIG. 3, the recording medium 10 is pressed against the stiffness detection guide 51 by the pressing force sensor 52. The pressing force sensor 52 outputs a pressing force necessary to press against the stiffness detection guide 51 to the control circuit 60.

  In S <b> 102, the recording medium 10 on the stiffness detection guide 51 is irradiated with light from the light emitting diode 54, and the reflected light reflected by the recording medium 10 enters the light receiving position sensor 55. The higher the light receiving position is, the larger the output value sent to the control circuit 60 is, and the thickness of the recording medium 10 is measured.

  When the respective output values are output in S101 and S102 in FIG. 3, the recording medium 10 is conveyed toward the elastic plate guide 22 by the conveying roller 32 and the conveying roller 33, and the recording surface 10a of the recording medium 10 is roughened. Is detected. Light is emitted from the light emitting diode 57 to the recording surface 10 a and reflected by the recording medium 10. The light amount sensor 58 receives only light having a reflection angle equal to the incident angle, and a signal corresponding to the received light amount is output to the control circuit 60 (FIG. 3: S103).

  In S104 of FIG. 3, the CPU 62 of the control circuit 60 uses the output value sent from the pressing force sensor 52 to limit the curvature value so that no permanent deformation such as bending occurs when the recording medium 10 is bent. (Hereinafter referred to as limit curvature) is calculated. The relationship between the output value and the limit curvature is stored in advance in the ROM 63, and the limit curvature can be calculated by inputting the output value. When the output of the pressing force sensor 52 is large, the limit curvature is small because the rigidity of the recording medium 10 is high. This is because if a medium having high rigidity is bent with a large curvature, an unrecoverable deformation such as folding may occur. On the contrary, when the output of the pressing force sensor 52 is small, the limit curvature becomes large because the rigidity of the recording medium 10 is low. This is because a medium having low rigidity is less likely to cause unrecoverable deformation such as bending even if it is bent with a large curvature.

  On the other hand, in S105 of FIG. 3, the CPU 62 of the control circuit 60 calculates the effective curvature from the output value output in S102. From the calculated effective curvature and the output value output in S103, a curvature necessary for curving and destroying the recording material 11 on the recording medium 10 (hereinafter referred to as a destruction curvature) is calculated. The smaller the output of the light receiving position sensor 55 is, the thinner the recording medium 10 is, so that the effective curvature increases. Therefore, it is necessary to increase the curvature of the elastic plate guide 22. On the contrary, if the output of the light receiving position sensor 55 is large, the recording medium 10 is thick. Therefore, even if the curvature of the elastic plate guide 22 is set to be small, the curvature of the surface of the recording medium 10 to which the recording material 11 adheres. Becomes larger and the recording material 11 can be destroyed. On the other hand, the smaller the output of the light amount sensor 58, the larger the surface roughness of the recording medium 10 and the stronger the adhesion of the recording material 11 to the recording medium 10. In this case, the curvature of the elastic plate guide 22 is increased. It is necessary to increase the bending stress applied to the recording material 11. Therefore, the fracture curvature adjusted by the elastic plate guide 22 needs to be determined by combining the output of the light receiving position sensor 55 and the output of the light quantity sensor 58. An example is a case where the recording medium 10 is thick and the recording surface 10a has irregularities. In this case, the curvature calculated from the output value output by the light receiving position sensor 55 is small, but the curvature calculated from the light receiving value detected by the light quantity sensor 58 needs to be increased. Since the stress increases as the curvature increases, the value of the larger curvature among the respective curvatures output by the sensors 55 and 58 is the fracture curvature calculated in S105 of FIG. That is, in the above example, the destructive curvature is a curvature calculated from the output value from the light quantity sensor 58.

  Next, the process proceeds to S106, and the magnitude relationship between the limit curvature and the fracture curvature calculated from S104 and S105 is compared. When the fracture curvature is equal to or less than the limit curvature (S106: Yes), the process proceeds to S107, and the curvature adjusting motor 23 is rotated so that the elastic plate guide 22 has the curvature necessary for the destruction of the recording material 11 calculated in S105. adjust. This adjustment is performed by transmitting the rotation of the curvature adjusting motor 23 to the bending adjusting screw 26 and rotating the bending adjusting screw 26 so that the guide presser 25 is moved up and down to change the deflection amount of the elastic plate guide 22.

  After the curvature is set, as shown in FIG. 1, the recording medium 10 is sandwiched between the elastic plate guide 22 and the conveying roller 34 and is conveyed to the bent portion 22 a set to the breaking curvature of the elastic plate guide 22. Therefore, the recording medium 10 is bent between the guide bar 21 and the elastic plate guide 22. At this time, since the recording material 11 on the recording surface 10a is also subjected to bending stress together with the recording medium 10, the layered recording material 11 is cracked, and the adhesion between the recording material 11 and the recording surface 10a is weakened.

  On the other hand, when the fracture curvature is larger than the limit curvature (S106: No), the process proceeds to S108, and the curvature of the elastic plate guide 22 is set to the limit curvature. This is because if the curvature of the elastic plate guide 22 is increased to the breaking curvature, the recording medium 10 is deformed in an unrecoverable manner such as a bend.

  Then, the recording medium 10 is conveyed to the bent portion 22 a of the elastic plate guide 22 by the conveying roller 34. The recording medium 10 is curved along the bent portion 22a set to the limit curvature. At this time, since the recording material 11 on the recording surface 10a as well as the recording medium 10 is subjected to bending stress, the adhesive force between the recording material 11 and the recording surface 10a is weakened due to the difference in curvature radius between them. However, since the curvature at the bent portion 22a is set to the limit curvature, the recording material 11 cannot be destroyed. The process of detecting the rigidity and thickness of the recording medium 10 and the adhesive force of the recording material 11 by the various sensors is a detection process. Further, the step of rotating the curvature adjusting motor 23 from the control circuit 60 based on the detection result to change the amount of bending of the elastic plate guide 22 is the curvature control step. Then, after the curvature of the elastic plate guide 22 is adjusted, the step of bending the guide medium 21 between the guide bar 21 and the bent portion 22a of the elastic plate guide 22 by conveying the recording medium 10 is the bending step. . Note that the process of transporting the recording medium 10 by appropriately rotating the transport rollers 32 to 36 is the transport process.

  As shown in FIG. 1, after the bending stress is applied by the elastic plate guide 22, the recording medium 10 is further conveyed toward the rubber plate 45 and the peeling device 40 by further rotating the conveyance roller 34. . Until the front end portion of the recording medium 10 is sandwiched between the conveying rollers 35 and 36, the support base 43 is positioned below, and there is almost no pressure applied by the blade 41 to the recording surface 10a.

  The front end portion of the recording medium 10 is sandwiched between the conveying rollers 35 and 36, and the peeling force adjusting motor 42 pushes the support base 43 upward through the support column 46. Accordingly, the pressing force of the spring 44 is adjusted, and the recording medium 10 is pressed against the blade 41 by the rubber plate 45 with a constant pressure.

  The pressure with which the recording medium 10 is pressed against the blade 41 at this time is determined by the blade 41 of the peeling device 40 when the curvature for bending the recording medium 10 is set to the destructive curvature in S107 of FIG. In order to uniformly contact the surface of the recording medium 10, the pressure is adjusted to the minimum necessary pressure. The recording surface 10a is conveyed while being rubbed at a constant pressure by the blade 41. The recording material 11 on the recording surface 10a is peeled off from the recording surface 10a because the shearing stress is applied by the blade 41 by the conveyance. In particular, according to the present invention, the recording material 11 is subjected to bending stress and cracks are generated in the previous step in which shear stress is applied by the blade 41, and the adhesion between the recording material 11 and the recording surface 10a is weakened. It can be removed with very weak shear stress.

  On the other hand, when the recording medium 10 is curved with a limit curvature in S108, a signal is given in S109 of FIG. 3 to increase the number of revolutions of the peeling force adjusting motor 42 as compared to when the control circuit 60 is set to the fracture curvature. Send. When the support base 43 is further pushed up, the pressing force of the spring 44 is increased and the pressure with which the recording medium 10 is pressed against the blade 41 is increased. The recording surface 10a is conveyed while being rubbed with a pressure stronger than that when the recording medium 10 curved by the breaking curvature by the blade 41 is rubbed. When the recording medium 10 is conveyed by the conveying rollers 35 and 36, a shear stress from the blade 41 is applied to the recording material 11 on the recording surface 10a, and the recording material 11 is peeled off and removed from the recording surface 10a. The

  When the recording medium 10 is curved with a limit curvature, the recording material 11 is not cracked by bending stress, and the adhesive force between the recording material 11 and the recording surface 10a is more than that when the recording material 11 is broken. Although the pressure remains high, the pressing force of the spring 44 is increased, and the pressure with which the recording medium 10 is pressed against the blade 41 is also increased. Therefore, the peeling force with respect to the recording material 11 is increased, so Can be removed. Even in this case, the recording material 11 on the recording surface 10a of the recording medium 10 is subjected to bending stress by the elastic plate guide 22, and the recording material 11 and the recording surface 10a are different due to the difference in the radius of curvature of both. Therefore, the recording material 11 can be removed with a lower pressing force than when the recording medium 10 is not bent at all. Therefore, the recording surface 10a is not damaged by the blade 41. At this time, the step of peeling the recording material 11 from the recording surface 10a by the blade 41 is a removing step, and the pressing force of the blade 41 against the recording medium 10 is adjusted by changing the rotation speed of the peeling force adjusting motor 42 by the control circuit 60. The process of performing becomes a removal force control process.

  Thereafter, when the conveyance rollers 35 and 36 have finished conveying the recording medium 10 to the rear end, the rotation of the conveyance rollers 35 and 36 is stopped.

According to the method described above, the present invention adjusts the curvature of the recording medium 10 when bending stress is applied to the recording material 11 by the rigidity and thickness of the recording medium 10 and the surface roughness of the recording surface 10a, and also the recording medium 10 Also adjusts the pressure against which the blade 41 is pressed. As a result, the recording material 11 is securely attached to the recording surface 10a without irreversible deformation such as “folding” in the recording medium 10 and without damaging the recording surface 10a of the recording medium 10 by the blade 41. It can be removed from the surface.
[Modification]
The present invention is not limited to the above-described embodiment, and can be modified to the extent that it does not depart from the present invention.

  For example, according to the above-described embodiment, the stiffness of the recording medium 10 is detected using the stiffness detection guide 51 and the pressing force sensor 52. However, as shown in FIG. You may detect the amount of bending which arises naturally by gravity. In this case, the recording medium 10 is supported by the recording medium support guide 71 so as to be lowered in the transport direction. One end 10b on the upstream side in the transport direction of the recording medium 10 protrudes from the recording medium support guide 71 by a certain length, and the one end 10b is bent by gravity. The light irradiated by the light emitting diode 72 is reflected to one end 10 b of the recording medium 10 bent by gravity, and the reflection position is detected by the light receiving position sensor 73 to detect the stiffness. According to this method, the higher the light receiving position detected by the light receiving position sensor 73 is, the higher the output value is set, and the amount of deflection due to gravity is small. Accordingly, the rigidity of the recording medium 10 is large.

  Further, as shown in FIG. 5, the method of detecting the stiffness may be detected by the amount of deformation when a certain pressing force is applied. In this case, the two recording medium support guides 75 are arranged at a predetermined interval, and the recording medium 10 is supported by the two recording medium support guides 75. The pressing force application device 76 applies a certain load to the recording medium 10. The recording medium 10 is deformed toward the space 75 a between the recording medium support guides 75. When the recording medium 10 is deformed, the light emitting diode 77 emits light, and the light receiving position sensor 78 detects the reflection position of the light reflected by the deformed recording medium 10. The stiffness is detected based on the detected light receiving position. In this method, the smaller the amount of deformation, the higher the light detected by the light receiving position sensor and the larger the output value. The rigidity of the recording medium 10 at this time is large.

  In the above embodiment, the thickness of the recording medium 10 is measured by the light emitting diode 54 and the light receiving position sensor 55. As shown in FIG. 6, the thickness of the recording medium 10 depends on the magnitude of the magnetic field in the thickness direction of the recording medium 10. It may be detected. At this time, the movable core 81 faces the stiffness detection guide 51 and is in contact with the back surface 10 c of the recording medium 10. Note that the movable core 81 is movably provided so as to come into contact with the recording medium 10 even when the recording medium 10 has a different thickness. Further, a magnetic field sensor 82 is attached at a position opposite to the movable core 81 and on the back side of the stiffness detection guide 51. The magnetic field sensor 82 detects the magnitude of the magnetic field created by the movable core 81 as the thickness of the recording medium 10. In this method, the greater the amount of magnetic field detected by the magnetic field sensor 82, the thinner the recording medium 10 is.

  In the above embodiment, the surface roughness of the recording medium 10 is measured by the light emitting diode 57 and the light amount sensor 58. However, as shown in FIG. 7, even if the vibration amount on the surface of the recording medium is detected. Good. At this time, the probe (contact portion) 85 is in contact with the recording surface 10a of the recording medium 10, and moves following the unevenness of the recording surface 10a. The arm 86 supports the probe 85 and transmits the movement to the transducer 87. The transducer 87 transmits the vibration transmitted from the arm 86 to the control circuit 60 as an output signal. In this case, the surface roughness of the recording surface 10a of the recording medium 10 increases as the movement of the probe 85 increases and the variation in the output of the transducer 87 increases.

  Further, the adhesion force detected by the adhesion force detection means is not limited to the roughness of the recording surface 10a, and for example, the releasability of the recording surface 10a may be detected. At this time, an adhesive tape is affixed to the recording surface 10a, and a release property is detected from the force which peels off the adhesive tape. The greater the releasability, the smaller the adhesion of the recording material 11.

  Further, according to the above embodiment, the peeling device 40 for peeling the recording material 11 on the recording surface 10a has the blade 41. However, as shown in FIG. The rotating blade 92 may be configured. Or you may be comprised by the brush 95 which rotates as shown in FIG.

  Further, when the recording material 11 is peeled off by rotating the rotary blade 92 or the brush 95, which are rotating members as shown in FIGS. 8 and 9, the peeling force is as shown in FIG. Is not limited to the method of increasing the pressing force of the spring 44 to increase the pressing force of the spring 44. As shown in the flowchart of FIG. 10, the peeling force on the recording material 11 is adjusted by adjusting the rotational speed of the rotary blade 92 and the brush 95. It is also possible (FIG. 10: S209). Further, as shown in S309 in the flowchart of FIG. 11, the rotation speed of the conveying rollers 35 and 36 that convey the recording medium 10 is lowered below a specified value to reduce the conveying speed, and the rotation rotates while the recording medium 10 is conveyed. The peeling force with respect to the recording material 11 may be increased by increasing the number of times the blade 92 and the brush 95 rub the recording surface 10a. Furthermore, it is also possible to adjust the peeling force by combining the above-described methods. The other steps in FIGS. 10 and 11, that is, S201 to S208 and S301 to S308 are the same as S101 to S108 in FIG.

  In the above embodiment, the recording material 11 is removed by the peeling device 40 after the recording medium 10 is bent with a predetermined curvature, but only the peeling force of the peeling device 40 is adjusted without bending. Then, the recording material 11 may be removed, or only the peeling force may be adjusted after curving with a certain curvature. Further, it can be changed as appropriate without departing from the present invention, such as making the peeling force constant and controlling only the curvature.

It is a schematic block diagram of the reproducing | regenerating apparatus of the recording medium in this embodiment. It is a block diagram which shows the electrical or mechanical connection relationship of each part which comprises a reproducing | regenerating apparatus. It is a flowchart of the processing process of a control circuit. It is explanatory drawing explaining another rigidity detection means. It is explanatory drawing explaining another rigidity detection means. It is explanatory drawing explaining the method to measure the thickness of another recording medium. It is explanatory drawing explaining the method of measuring the roughness of another surface. It is explanatory drawing explaining another peeling means. It is explanatory drawing explaining another peeling means. It is a flowchart of the process of another control circuit. It is a flowchart of the process of another control circuit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Playback apparatus 10 Recording medium 11 Recording material 20 Bending part (bending means)
21 Guide rod 22 Elastic plate guide 23 Curvature adjustment motor (curvature control means)
26 Curvature adjustment screw 31 Conveyance motor 32, 33, 34, 35, 36 Conveyance roller 40 Peeler (removing means)
41 Blade 42 Peeling force adjustment motor (removal force control means)
50 Detection Means 51 Stiffness Detection Guide 52 Pressing Force Sensor 54 Light Emitting Diode (Irradiation Unit)
55 Light receiving position sensor (light receiving part)
57 Light emitting diode (irradiation part)
58 Light sensor (light receiving part)
60 Control circuit (control means)

Claims (24)

Removing means for removing the recording material adhering to the surface of the recording medium from the recording medium;
Detecting means for detecting characteristics of the recording medium;
A recording medium reproducing apparatus comprising: a control unit that controls the removing unit according to the characteristic of the recording medium detected by the detecting unit. The removing means includes a blade and a pressing means for pressing the blade against the recording medium;
2. The recording medium reproducing apparatus according to claim 1, wherein the control unit controls the pressing force of the blade by the pressing unit.   The recording medium reproducing apparatus according to claim 1, wherein the removing unit is a rotating member, and the control unit controls the rotation of the rotating member. Further comprising a conveying means for conveying the recording medium;
2. The recording medium reproducing apparatus according to claim 1, wherein the removing unit is a rotating member, and the control unit controls a conveyance speed of the recording medium conveyed by the conveying unit.   5. The recording medium according to claim 1, wherein the detection unit includes an adhesion force detection unit that detects an adhesion force of the recording material adhered to a surface of the recording medium. Playback device.   6. The recording medium reproducing apparatus according to claim 5, wherein the adhesion force detecting means detects the adhesion force based on the roughness of the surface of the recording medium. The adhesive force detection means includes an irradiation unit that irradiates light on the surface of the recording medium, and a light receiving unit that receives reflected light of the light irradiated by the irradiation unit,
7. The reproducing apparatus for a recording medium according to claim 6, wherein the adhesive force is detected based on a difference between an amount of light irradiated by the irradiation unit and an amount of light received by the light receiving unit. The adhesive force detection means has a contact portion that contacts the surface of the recording medium,
7. The reproducing apparatus for a recording medium according to claim 6, wherein the adhesive force is detected by vibration of the contact portion that vibrates on the surface of the recording medium according to roughness. A conveying unit configured to convey a recording medium having a recording material attached to a surface; a bending unit configured to bend the recording medium conveyed by the conveying unit; and after the recording medium is bent by the bending unit, A recording medium reproducing apparatus comprising a removing means for removing the recording material from the recording medium,
An adhesion force detecting means for detecting the adhesion force of the recording material adhered to the surface of the recording medium;
Reproducing a recording medium, comprising: control means for controlling the bending means so as to obtain a fracture curvature necessary for destroying the recording material based on the adhesion force detected by the adhesion force detection means. apparatus. The adhesive force detection means includes an irradiation unit that irradiates light on the surface of the recording medium, and a light receiving unit that receives reflected light of the light irradiated by the irradiation unit,
The recording medium according to claim 9, wherein the adhesion force is detected by the roughness of the surface based on a difference between an amount of light irradiated by the irradiation unit and an amount of light received by the light receiving unit. Playback device. The adhesive force detection means has a contact portion that contacts the surface of the recording medium,
The reproducing apparatus for a recording medium according to claim 9, wherein the adhesion force is detected by vibration of the contact portion that vibrates on the surface of the recording medium according to roughness. Stiffness detecting means for detecting the rigidity of the recording medium is further provided,
The control means further calculates a limit curvature for preventing the recording material from being permanently deformed from the stiffness detected by the stiffness detection means, and as a result of comparing the fracture curvature with the limit curvature, the fracture curvature is the limit curvature. The bending means is set to the breaking curvature when the following is true, and the bending means is set to the critical curvature when the breaking curvature is larger than the limit curvature. The recording medium reproducing device according to any one of the above.   13. The recording medium reproducing apparatus according to claim 12, wherein the stiffness detection means detects the stiffness based on a natural deflection amount from one end of the recording medium to a predetermined length.   13. The recording medium reproducing apparatus according to claim 12, wherein the stiffness detecting means detects the stiffness based on a deformation amount when a load is applied to the recording medium.   13. The reproducing apparatus for a recording medium according to claim 12, wherein the stiffness detecting means detects the stiffness by a pressing force necessary to deform the recording medium into a predetermined shape.   16. The reproducing apparatus for a recording medium according to claim 12, wherein the control unit further includes a removal force control unit that controls a removal force in the removal unit in accordance with a curvature. The removing means includes a blade and a pressing means for pressing the blade against the recording medium;
The recording medium reproducing apparatus according to claim 16, wherein the removing force control unit controls a pressing force of the blade by the pressing unit.   17. The reproducing apparatus for a recording medium according to claim 16, wherein the removing unit is a rotating member, and the removing force control unit controls the rotation of the rotating member.   17. The reproducing apparatus for a recording medium according to claim 16, wherein the removing unit is a rotating member, and the removing force control unit controls a conveyance speed of the recording medium conveyed by the conveying unit. . An effective curvature calculating means for calculating an effective curvature of the recording medium from a thickness of the recording medium;
The said fracture curvature is calculated from the said adhesive force and the said effective curvature obtained by the said adhesive force detection means and the said effective curvature calculation means, The any one of Claim 12 thru | or 19 characterized by the above-mentioned. Recording medium reproducing apparatus. The effective curvature calculating means includes an irradiation unit that irradiates light on the surface of the recording medium, and a light receiving unit that receives light reflected by the recording medium,
21. The reproducing apparatus for a recording medium according to claim 20, wherein the effective curvature is calculated based on a position of light received by the light receiving unit. A reproduction method for reproducing the recording medium by removing a recording material from the recording medium,
A transporting process for transporting the recording medium;
A detection step of detecting characteristics of the recording medium;
A curving step of breaking the recording material by curving the recording medium transported by the transporting step;
A curvature control step of adjusting the curvature of the bending step according to the characteristics of the recording medium detected by the detection step;
A removing step of removing the destroyed recording material;
And a removal force control step of controlling a removal force for removing the recording material by the removal step in accordance with the curvature adjusted by the curvature control step.   23. The recording medium according to claim 22, wherein the curvature control step is set based on a fracture curvature necessary for destroying the recording material and a limit curvature for preventing the recording medium from being permanently deformed. How to play. The detecting step detects an adhesive force of the recording material attached to the recording medium, a thickness of the recording medium, and a rigidity of the recording medium,
The fracture curvature is calculated from the adhesive force of the recording material detected by the detection step and the thickness of the recording medium, and the limit curvature is calculated from the rigidity of the recording medium detected by the detection means. The method for reproducing a recording medium according to claim 23, characterized in that:

Images