JPH09314084A - Sheet-shaped material cleaning method and sheet-shaped material cleaning device - Google Patents

Abstract

(57) Abstract: The present invention is a non-hazardous, efficient cleaning and recycling in a short time without discarding a used OHP sheet. According to the present invention, a sheet-shaped material is sandwiched and rotated at a predetermined pressure by a pair of first and second conveying rollers to be conveyed, and a sheet-shaped material is first conveyed by a first conveying roller. When the sheet material is conveyed to a pair of cleaning rollers arranged between the roller and the second conveying roller and it is confirmed that the sheet material is sandwiched between the first conveying rollers, the sheet material is wet with the cleaning liquid and The surface of the sheet-shaped material is cleaned by rotating the cleaning roller in the same direction as the first and second transportation rollers while sandwiching it with a pressure weaker than that of the first and second transportation rollers. When it is confirmed that the sheet material is not sandwiched by the first transport roller, the sheet material is sandwiched by the cleaning liquid and is sandwiched by a pressure weaker than those of the first and second transport rollers. Rotate the cleaning roller in the opposite direction to the transport roller of So as to clean the surface of the sheet material by.

Description

Detailed Description of the Invention

[0001]

[Table of Contents] The present invention will be described in the following order. Technical field to which the invention pertains Prior art (FIG. 6) Problems to be solved by the invention Means for solving the problems Embodiments of the invention (FIGS. 1 to 5) Effects of the invention

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet-shaped material cleaning method and a sheet-shaped material cleaning apparatus, and is suitable for application to, for example, cleaning an OHP sheet used in an overhead projector.

[0003]

2. Description of the Related Art Conventionally, an OHP sheet on which a toner image is formed by an electrophotographic image forming method has been used at various conferences, exhibitions, academic conferences and the like. That is, various presentations have been made in which an overhead projector (OHP) projects a toner image formed on an OHP sheet on a large screen. As such an OHP sheet, a relatively expensive transparent polyethylene terephthalate (PETF) film is used, and as a toner for printing a toner image thereon, a carbon black is used as a charging agent and a styrene-based film. A fine powder is used by uniformly kneading with a resin.

By the way, there are cases where it is necessary to erase or correct the toner image after the toner image is formed on the OHP sheet. As a tool to be used at this time, a so-called felt pen is used for toner-soluble toluene or benzene. There is a correction pen that contains an organic solvent. To erase a toner image formed on an OHP sheet using such a correction pen, first, a portion to be erased is rubbed with a pen tip of the correction pen to dissolve the toner, and then a cloth, paper, or the like is used. Should be wiped off.

Further, in order to remove the entire toner image formed on the OHP sheet, as shown in the cleaning device 1 of FIG. 6, a predetermined amount of the cleaning liquid 3 is put in the cleaning tank 2 and a pair of guide rollers is used. There is a method in which the OHP sheet 8 is sequentially conveyed in the direction shown by the arrow X by 4 to 7 and immersed in the cleaning liquid 3.

[0006]

By the way, in the cleaning apparatus 1 having such a structure, when the OHP sheet 8 is cleaned, the OHP sheet 8 is simply immersed in the cleaning liquid 3, so that the toner image cannot be sufficiently dropped. There is.
Further, in the cleaning device 1, there is a problem that dirt such as carbon black floats in the cleaning liquid 3 after the OHP sheet 8 is cleaned, and the dirt adheres to the OHP sheet 8 again.

Further, even if an attempt is made to remove the entire toner image formed on the OHP sheet 8 by using the correction pen, the correction pen is intended to erase or correct a narrow area of the toner image, which is enormous. It is not realistic because it requires time, labor, and cost.

Furthermore, the organic solvents such as toluene and benzene used for the correction pen not only adversely affect the human body, but also have a very high ignitability and cannot be practically used. Therefore, the used OH on which the toner image is formed
The P-sheet is sometimes cut and discarded or incinerated, which is a problem from the viewpoint of environmental protection.

The present invention has been made in view of the above points, and is a sheet-like material cleaning method and a sheet-like material, which can be used to clean and recycle a used OHP sheet in a harmless and efficient manner in a short time without discarding it. It is intended to propose a cleaning device.

[0010]

In order to solve such a problem, in the present invention, a sheet material is conveyed by being sandwiched by a pair of first and second conveying rollers at a predetermined pressure and rotated. Then, the sheet-like material is conveyed by the first conveying roller to the pair of cleaning rollers arranged between the first conveying roller and the second conveying roller, and the sheet-like material is conveyed to the first conveying roller. When it is confirmed that the sheet-shaped material is sandwiched by the first and second conveying rollers, the sheet-shaped material is wet with the cleaning liquid and is sandwiched with a pressure weaker than that of the first and second conveying rollers. When the surface of the sheet-shaped material is cleaned by rotating the cleaning roller in the same rotation direction as, and it is confirmed that the sheet-shaped material is no longer pinched by the first conveying roller, the sheet-shaped material is washed with the cleaning liquid. To The cleaning roller is rotated in a rotation direction opposite to that of the first and second conveyance rollers in a state where the cleaning roller is sandwiched with a pressure weaker than that of the first and second conveyance rollers, so that the surface of the sheet-shaped material is removed. Try to wash.

Thus, when it is confirmed that the sheet-shaped material is sandwiched by the first conveying rollers, the sheet-shaped material is rotated by rotating the cleaning roller in the same rotation direction as the first and second conveying rollers. When the sheet-shaped material is confirmed to be no longer pinched by the first conveying roller while the sheet is being reliably conveyed, the first
Also, by rotating the cleaning roller in a rotation direction opposite to that of the second conveyance roller, the sheet material is pulled in the direction opposite to the conveyance direction, and the sheet material is securely slackened or not clogged. The surface can be cleaned while being transported.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows the overall construction of an OHP sheet recycling apparatus 10 as a sheet-like material cleaning apparatus according to the present invention. The OHP sheet recycling device 10
A limonene liquid is used as a cleaning liquid for cleaning an OHP sheet as a sheet material. Here, limonene is a hydrocarbon compound that can be extracted from orange peel, and is capable of dissolving styrenic resins well and having extremely low toxicity to the human body.

The OHP sheet recycling apparatus 10 is
An openable lid 13 is attached via a hinge 12 to a frame 11 integrally formed with a frame central portion 11A that forms an outer shape and divides the internal space into two, and an OHP sheet 14 is attached to an end of the frame 11. The pedestal 15 for loading the is attached. The frame 11 has a frame central portion 11A formed at a predetermined height, and an upper space of the frame central portion 11A is covered with an OHP sheet 14A.
Are designed to pass through.

Further, box-shaped bases 16 and 17 are disposed in the internal space of the frame 11, and the bases 16 and 17 are
Reference numeral 17 is a track rail 18 to 21 attached to the side of the frame 11 and the frame central portion 11A, and sliders 22 to 25 moving on the track rail 18 to 21.
It is designed to be pulled out through. Inside the base 16, a butt 26 serving as a limonene tank containing a predetermined amount of limonene liquid is provided, and inside the base 17 also a butter 27 serving as a washing tank containing a predetermined amount of water. There is.

Further, pins 28 to 31 having a predetermined diameter are formed at the four corners of the upper end surface of the base 16, and the chassis 32 is pin 28 so as to be immersed in the limonene liquid in the buttocks 26.
It is adapted to be fitted into and fixed to 31 to 31.
Similarly, the pins 3 having a predetermined diameter are also provided at the four corners of the upper end surface of the base 17.
3 to 36 are formed, and the chassis 37 is fitted and fixed to the pins 33 to 36 so as to be immersed in the water in the buttocks 27.

Each of the chassis 32 and 37 is provided with a pair of cylindrical conveying rollers having a predetermined diameter, and a pair of cylindrical cleaning rollers having an outer diameter larger than the conveying rollers. Therefore, the OHP sheet recycle device 10 receives the OH introduced from the cradle 15.
The P sheet 14 is sequentially fed by the transport roller, and O
While the HP sheet 14 is immersed in the limonene liquid, the toner image is well dissolved and rubbed with a washing roller to remove it, and further rubbed with a washing roller in water to remove the limonene liquid and the remaining toner image. ing. Then, the OHP sheet 14 from which the toner image is removed is covered with the lid portion 1.
It is configured such that the sheets are sequentially fed by a plurality of conveying rollers provided inside the unit 3 and are discharged to the outside of the apparatus from a receiving table 38 provided at the left end of the lid 13.

By the way, as shown in FIG.
The sheet recycling apparatus 10 has a full-face cover 40 attached to the frame 11 and can be opened and closed via a hinge 41. Therefore, as shown in FIG.
The P sheet recycling apparatus 10 has the bases 16 and 1 which are held integrally with the chassis 32 and 37 when the entire cover 40 is opened.
7 can be pulled out via the sliders 22 and 25, respectively.

As a result, as shown in FIG.
The P-sheet recycling device 10 grasps the inverted U-shaped handle 32A from the pulled-out bases 16 and 17, and the chassis 3
2 and 37 can be pulled upward to replace the used limonene liquid and water remaining in the butts 26 and 27. As described above, the OHP sheet recycling apparatus 10 is designed to easily exchange the limonene liquid and water, and is excellent in maintainability.

Next, the flow of the cleaning process by the conveying roller and the cleaning roller attached to the chassis 32 and 37 will be described with reference to FIG. On the chassis 32, a pair of conveying rollers 50 to 57 each having a cylindrical shape having a predetermined diameter are attached so that the OHP sheet 14 can pass through the limonene liquid in the butt 26. Then, the transport rollers 53 and 54
A pair of cleaning rollers 58 each having a cylindrical shape having an outer diameter larger than that of the transport rollers 53 and 54 are attached between the cleaning roller 58 and the cleaning roller 58 so as to rub the surface of the OHP sheet 14 in the limonene liquid. As a result, the toner image formed on the surface of the OHP sheet 14 is dissolved by being dipped in the limonene liquid, and the cleaning roller 58 rotates at high speed in this state, so that the toner image is rubbed and removed. Has been done.

The cleaning roller 58 is made of polyethylene and has excellent wear resistance and chemical resistance. A wiper-shaped scraper 59 made of synthetic rubber or the like for wiping the limonene liquid and a water-absorption roller 60 made of polyurethane and having a high water-absorption property are attached between the transport rollers 55 and 56. In addition, each transport roller and cleaning roller 58,
A plurality of plate-shaped guides G are attached between the scraper 59, the water absorbing roller 60, and the like so as to sandwich the OHP sheet 14 from both sides. As a result, the OHP sheet 1
4 is smoothly conveyed between the rollers along each guide G.

Similarly, in the chassis 37, a pair of conveying rollers 61 to 68 each having a cylindrical shape having a predetermined diameter are provided.
The OHP sheet 14 sent from the above is attached so as to pass through the water in the buttocks 27, and the conveying rollers 64 and 6
A cleaning roller 69 having the same outer diameter as that of the cleaning roller 58 is attached so as to rub the surface of the OHP sheet 14 in water. In addition, a scraper 70 and a water absorption roller 71 that wipe the water between the conveyance rollers 66 and 67 are also used.
Is attached.

Next, the mechanism for feeding the OHP sheet 14 by the conveying rollers 53, 54 and the cleaning roller 58 will be described with reference to FIG. The transport roller 53 is an introduction unit for the OHP sheet 14, and the transport roller 54 is a discharge unit for the OHP sheet 14. The transport rollers 53 and 54
Is linked with a motor 80 via a belt, a chain, or the like. When the motor 80 is driven to rotate in the counterclockwise direction, the transport rollers 53 and 54 also rotate in the counterclockwise direction, The OHP sheet 14 is conveyed from the left side to the right side. The cleaning roller 58 is linked with the motor 81 via a belt or the like, and is rotatable in both the clockwise direction and the counterclockwise direction.

Further, a contact sensor 82 for contacting the leading end of the OHP sheet 14 and confirming that the OHP sheet 14 is pinched by the transport roller 53 is attached immediately before the transport roller 53 of the introduction section. ing. The contact sensor 82 has an elastic needle portion 82A, and when the OHP sheet 14 is fed, the needle portion 82A is bent by coming into contact with the OHP sheet 14, and the OHP sheet 14 is conveyed to the conveying roller 53. It is designed to be turned on by detecting that it is pinched. In this way,
The contact sensor 82 is adapted to detect the presence of the OHP sheet 14.

Accordingly, the contact sensor 82 is the OHP sheet 1
When 4 is detected and turned on, the control unit 83 causes the drive unit 84 to
To drive the motor 81 in the counterclockwise direction. On the contrary, the contact sensor 82
When the OHP sheet 14 is not sandwiched by the transport rollers 53 and is turned off, the control unit 83 sends a reverse signal to the drive unit 84 to rotate the motor 81 and the cleaning roller 58 in the clockwise direction. ing. At this time, the cleaning roller 58 transfers the OHP sheet 14 to the transport roller 5.
It is configured to rotate in the clockwise direction for the passage time from 3 to the cleaning roller 58.

Here, the cleaning roller 58 is the OHP sheet 1.
The pressure for sandwiching and pressing 4 is set to be weaker than that of the transport rollers 53 and 54, and the rotation speed is set to the transport roller 5
It is set faster than 3 and 54. This allows
OHP transported by the transport rollers 53 and 54
The cleaning roller 58 can be rubbed against the surface of the sheet 14 while sliding, and thus the toner image formed on the OHP sheet 14 can be removed.

By the way, the OHP sheet recycling apparatus 1
In 0, the OHP sheet 14 is sent as shown in FIG. 4 (B), the OHP sheet 14 does not exist at the position facing the contact sensor 82, and the cleaning roller 58 and the transport roller 54
If the cleaning roller 5
Since the rotation speed of No. 8 is higher than the rotation speed of the conveyance roller 54, the OHP sheet 14 was fed earlier and was loosened or jammed, so that it could not be smoothly conveyed.

In order to avoid such a situation, the OHP
When the OHP sheet 14 is sent to the sheet recycling apparatus 10 and the needle portion 82A of the contact sensor 82 no longer detects the OHP sheet 14, the control unit 83 sends an inversion signal to the drive unit 84, and the motor 81 and the cleaning roller. By rotating 58 in the clockwise direction to return the OHP sheet 14 to the direction of the introduction portion, it is possible to prevent the slack and clogging from occurring.

In the above structure, as shown in FIG. 5 (A), the OHP sheet recycle apparatus 10 has the OHP sheet 1
4 is a contact sensor 82 provided immediately before the conveyance roller 53.
Transport to a position facing. At this time, in the OHP sheet recycling device 10, the OHP sheet 14 is the contact sensor 8
Since the cleaning roller 58 has not been fed to the position where it contacts the second needle portion 82A, the cleaning roller 58 is still rotated in the counterclockwise direction by the motor 81.

Subsequently, as shown in FIG. 5B, the OHP sheet recycling apparatus 10 has a needle portion 82A of the contact sensor 82.
When the control unit 83 confirms the presence of the OHP sheet 14 by turning on the leading end of the OHP sheet 14 and turns on, the control unit 83 controls the drive unit 84 to control the motor 81.
Also, the cleaning roller 58 is kept in a state of being rotated counterclockwise.

Further, as shown in FIG. 5C, the OHP sheet recycling apparatus 10 uses the conveying roller 53 to convey the OHP sheet.
While sequentially sending the sheet 14 to the transport roller 54 side,
The surface of the OHP sheet 14 in which the toner image has been dissolved is rubbed off by the cleaning roller 58 while being immersed in the limonene liquid to remove the toner image. Even at this time, the cleaning roller 58 naturally remains rotating counterclockwise.

Next, as shown in FIG. 5 (D), the OHP sheet recycle apparatus 10 is fed with the OHP sheet 14, and the contact sensor 82 turns off the OHP sheet 14 when the control section 83 cannot confirm the OHP sheet 14. When the state is reached, the control unit 8
3 controls the drive unit 84 to rotate the motor 81 clockwise in the clockwise direction for the passage time in which the OHP sheet 14 is sent from the transport roller 53 to the cleaning roller 58 to move the cleaning roller 58 in the opposite direction. Rotate.

As a result, the OHP sheet recycling apparatus 10 pulls the OHP sheet 14 in the opposite direction by the cleaning roller 58, and generates a predetermined tensile stress on the OHP sheet 14 to loosen or jam the OHP sheet 14. Without fail, the toner image can be reliably conveyed and the surface of the cleaning roller 58 can be scraped off to remove the toner image. Similarly, in the OHP sheet recycling apparatus 10, the cleaning roller 69 and the conveying rollers 64, 6 are used even in the buttocks 27 as a water washing tank.
5, the OHP sheet 14 can be reliably conveyed without being loosened or clogged, and the surface of the OHP sheet 14 can be scraped off by the cleaning roller 69 to remove the toner image and the limonene liquid.

In this way, the OHP sheet recycling apparatus 10 cleans a predetermined number of OHP sheets 14 and then
As a maintenance work, the front cover 40 is opened and the butts 16 and 17 are taken out (FIG. 2). And OH
The P sheet recycling apparatus 10 removes the chassis 32 and 37 from the bases 16 and 17, replaces the dirty limonene liquid and water in the internal butts 26 and 27, respectively, to restore the original state, and again cleans the OHP sheet 14. Set ready for processing.

According to the above construction, the OHP sheet recycling apparatus 10 includes the limonene tank with the butt 26 and the butt 2.
7, the OHP sheet 14 conveyed by the respective conveying rollers is immersed in the limonene solution, and the toner image is removed by the rotation of the washing roller 58, and the scraper 59 and the water absorbing roller 60 are used. OHP sheet 1 after removing water and further conveyed by each conveying roller
In the state where 4 is immersed in water, the surface is scraped again by the cleaning roller 69 and the moisture is removed by the scraper 70 and the water absorbing roller 71, so that the toner image formed on the OHP sheet 14 is completely erased and dried. It can be discharged to the outside in the closed state.

In addition, the OHP sheet recycling apparatus 10 controls the OHP sheet 14 by the contact sensor 82 to control the OHP sheet 14.
When it becomes impossible to confirm, the control unit 83 controls the drive unit 84 to rotate the motor 81 in the clockwise direction to rotate the cleaning roller 58 in the opposite direction to the conventional direction, so that the cleaning roller 58 causes the OHP sheet 14 to rotate. Pull in the opposite direction and pull O
The HP sheet 14 can be reliably conveyed without being loosened or jammed, and the surface can be scraped off by the cleaning roller 58 to remove the toner image.

Further, the OHP sheet recycling device 10
Uses a limonene liquid that can be extracted from orange peel or the like as a cleaning liquid, and the toner image formed on the OHP sheet 14 can be erased simply by scraping the surface of the OHP sheet 14 with the cleaning roller 58. The OHP sheet 14 can be recycled at low cost and without causing any harm to the human body without causing pollution.

Further, the OHP sheet recycling device 10
Opens the front cover 40 and takes out the bases 16 and 17, and then the chassis 32 and 37 are removed from the bases 16 and 17.
Since the used limonene liquid and water in the butts 26 and 27 inside can be exchanged, the cleaning rollers 58 and 69 can clean the limonene liquid and dirt such as carbon black floating in the water again. OHP sheet 14
It can be prevented from adhering to the top.

In the above-described embodiment, the cleaning roller 58 immersed in the container 26 as the container is the first cleaning roller 58.
Although the case where one is provided between the second conveying rollers 53 and 54 has been described, the present invention is not limited to this, and a plurality of cleaning rollers may be provided. In practice, the OHP sheet recycling apparatus uses two cleaning rollers to remove the toner image. As a result, the OHP sheet recycling device 10 becomes O
The toner image formed on the HP sheet 14 can be more completely removed.

Further, in the above-described embodiment, the needle portion 82A of the contact sensor 82 as the detecting means has the OHP sheet 14
Although the case has been described in which the detection is performed by contacting with, the present invention is not limited to this, and various other detection means such as an optical sensor may be used. In this case, the same effect as in the above-described embodiment can be obtained.

Further, in the above-described embodiment, the case where the outer diameters of the cleaning rollers 58 and 69 are set to be larger than the outer diameters of the conveying rollers has been described. As long as the surface of the OHP sheet 14 can be rubbed smoothly by rotating at a pressure weaker than that of the roller, the cleaning roller and the conveying roller having various other outer diameters may be used in combination.

[0042]

As described above, according to the present invention, the sheet-shaped material is conveyed by being sandwiched and rotated by a pair of first and second conveying rollers at a predetermined pressure.
The sheet-shaped material is conveyed to the pair of cleaning rollers arranged between the first conveying roller and the second conveying roller by the conveying roller of (1), and the sheet-shaped material is sandwiched by the first conveying roller. When it is confirmed that the sheet-shaped material has been attached, the sheet-shaped material is in the same rotation direction as the first and second conveying rollers in a state where the sheet-like material is wet with the cleaning liquid and is sandwiched with a pressure weaker than that of the first and second conveying rollers. The surface of the sheet-shaped material is cleaned by rotating the cleaning roller to
When it is confirmed that the sheet-shaped material is no longer pinched by the transport rollers, the first and second sheet-shaped materials are wetted with the cleaning liquid and are sandwiched with a pressure weaker than those of the first and second transport rollers. The surface of the sheet-shaped material is cleaned by rotating the cleaning roller in the rotation direction opposite to that of the second transport roller.

Thus, when it is confirmed that the sheet-shaped material is sandwiched by the first conveying rollers, the cleaning roller is rotated in the same rotation direction as the first and second conveying rollers to remove the sheet-shaped material. When the surface is cleaned while being reliably transported and it is confirmed that the sheet-shaped material is no longer pinched by the first transport roller, the cleaning roller is rotated in the opposite rotation direction to the first and second transport rollers. By rotating and pulling the sheet-like material in the direction opposite to the conveying direction, the surface can be washed while reliably conveying the sheet-like material without loosening or clogging.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a cross-sectional structure of an OHP sheet recycling apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic diagram showing an operation procedure during maintenance work of the OHP sheet recycling apparatus according to the embodiment of the present invention.

FIG. 3 is a schematic cross-sectional view showing the flow of a cleaning process by the transport roller and the cleaning roller attached to the chassis of the OHP sheet recycling apparatus according to the embodiment of the present invention.

FIG. 4 is a block diagram showing a feeding mechanism of an OHP sheet recycling apparatus according to an embodiment of the present invention.

FIG. 5 is a schematic sectional view for explaining an OHP sheet feeding method by the OHP sheet recycling apparatus according to the embodiment of the present invention.

FIG. 6 is a schematic cross-sectional view showing the configuration of a conventional cleaning device.

[Explanation of symbols]

1 ... Cleaning device, 2 ... Cleaning tank, 3 ... Cleaning liquid, 4-7
...... Guide roller, 10 …… OHP sheet recycling device, 11 …… Frame, 12, 41 …… Hinge, 13 ・ ・ ・
... Lid part, 14 ... OHP sheet, 15, 38 ... Cradle, 16, 17 ... Base, 18-21 ... Track rail, 22-25 ... Slider, 26, 27 ... Butt, 28-31 , 33-36 …… Pin, 32, 37 ……
Chassis, 40 ... Front cover, 50-57, 61-6
8 ... Conveying roller, 58, 69 ... Washing roller, 59,
70: scraper, 60, 71: water absorbing roller, 8
0, 81 ... Motor, 82 ... Contact sensor, 83 ... Control section, 84 ... Drive section.

Claims (10)

[Claims] 1. A sheet-shaped material is conveyed by being sandwiched and rotated at a predetermined pressure by a pair of first and second conveying rollers, and is conveyed by the first conveying roller. Is conveyed to a pair of cleaning rollers arranged between the first conveying roller and the second conveying roller, and the sheet material is pinched by the first conveying roller. When it is confirmed, the sheet-shaped material is wet with the cleaning liquid and is sandwiched with a pressure weaker than that of the first and second conveying rollers, and the sheet-shaped material is rotated in the same rotation direction as the first and second conveying rollers. When the surface of the sheet-shaped material is cleaned by rotating the cleaning roller and it is confirmed that the sheet-shaped material is no longer pinched by the first transport roller, the sheet-shaped material is used as a cleaning liquid. The sheet-shaped sheet is rotated by rotating the cleaning roller in the opposite rotation direction to the first and second conveying rollers in a state of being sandwiched under a pressure weaker than that of the first and second conveying rollers. A sheet-like material cleaning method, which comprises cleaning the surface of a material. 2. The sheet-like material cleaning method according to claim 1, wherein the cleaning roller rotates at a higher speed than the first and second transport rollers. 3. The method for cleaning a sheet material according to claim 1, wherein the cleaning liquid is a liquid containing limonene. 4. The sheet-shaped material cleaning method according to claim 1, wherein the cleaning liquid is placed in a container having a predetermined shape, and the cleaning roller is immersed in the cleaning liquid. 5. The sheet-like material cleaning method according to claim 4, wherein the container is detachably attached, and the cleaning liquid is replaced by removing the container. 6. A pair of first and second conveying rollers that convey a sheet-shaped material by sandwiching and rotating the sheet-shaped material at a predetermined pressure, the first conveying roller and the second conveying roller. A pair of cleaning rollers disposed between and cleaning the surface of the sheet material by sandwiching and rotating the sheet material with a pressure weaker than that of the conveying roller in a state where the sheet material is wet. Drive means for rotationally driving the roller; detection means for detecting that the sheet-shaped material is nipped by the first conveying roller; and the sheet-shaped material for detecting the sheet-shaped material by the first detecting means. When it is confirmed that the sheet is pinched by the transport roller, the cleaning roller is driven to rotate in the same rotation direction as the first and second transport rollers, and the sheet-shaped material is detected by the detecting means. When it is confirmed that the cleaning roller is no longer pinched by the first transport roller, the cleaning roller is driven to rotate in a direction opposite to the rotation direction of the first and second transport rollers. A sheet-like material cleaning device. 7. The sheet-like material cleaning device according to claim 6, wherein the cleaning roller rotates at a higher speed than the first and second conveying rollers. 8. The sheet-like material cleaning device according to claim 6, wherein the cleaning liquid is a liquid containing limonene. 9. The sheet-like material cleaning apparatus according to claim 6, wherein the cleaning liquid is placed in a container having a predetermined shape, and the cleaning roller is immersed in the cleaning liquid. 10. The sheet-like material cleaning apparatus according to claim 9, wherein the container is detachably attached, and the cleaning liquid is replaced by removing the container.