JP2002296989A - Method and device for processing recyclable recording sheet, and storage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a processing method, a processing device and a storage device, which maintain the security of pictures and character information on a recyclable recording sheet till recycling processing after use. SOLUTION: With respect to the processing method for a recording sheet S which can be recycled by removing printing toner stuck to the surface, the surface of the recording sheet S to which toner is stuck is subjected to unreadability treatment by an unreadability treatment part, for example, a heat roll 13 of an unreadability treatment device 10 so that secret information cannot be seen from the outside. A storage device 42 in which the recording sheet S is stored is attached to and detached from a sheet ejection part 30 of the unreadability treatment device 10 having the image unreadability treatment part as well as a sheet supply part 41 of a sheet recycling device 40, which removes toner on the recording sheet S, and has such constitution that a lot of sheets can be stored in the laminated state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording sheet used in an electrophotographic copying machine or printer, which can be reproduced by removing a printing toner on the surface after use. The present invention relates to a processing method, a processing device, and a storage device.

[0002]

2. Description of the Related Art In recent years, such reproducible recording sheets have become widespread from the standpoint of resource protection and environmental protection. One example of such sheets is paper or overhead projector sheets (hereinafter simply referred to as "OHP sheets"). There is a recording sheet in which a water-swellable surface layer is formed on the surface of a base layer.

[0003] Such a reproducible recording sheet prints images and text information with an electrophotographic copying machine or printer as described above, and after being used for browsing or the like, a dedicated sheet reproducing apparatus. The toner is removed by a (cleaning device) to perform a regenerating process.

[0004]

By removing the toner in the reproduction process, naturally, the unnecessary image and character information on the sheet are erased. Means that the recording sheet on which the image and the character information are described is generally left in a readable state until a certain amount is stored.

However, if the image or character information on the recording sheet is confidential information, leaving it in a readable state as described above may cause leakage of confidential information, which is not preferable.

[0006]

An object of the present invention is to provide a reproducible recording sheet.
It is an object of the present invention to provide a processing method, a processing device, and a storage device that can maintain confidentiality of images and character information until playback processing after use. Referenced prior art documents include JP-A-5-297766 and JP-A-4-89271.

[0007]

In order to achieve the above object, the present invention provides a method for processing a recording sheet which can be reproduced by removing a printing toner attached to a surface. An opaque film is adhered to the surface of the recording sheet to which the toner has adhered. As a result, the image on the sheet surface can be easily and firmly covered, and leakage of confidential information can be reliably prevented until the used recording sheet is reproduced.

According to a second aspect of the present invention, in the method for processing a reproducible recording sheet, an adhesive layer is formed on the opaque film. Thereby, the operation of bonding the opaque film to the recording sheet can be easily performed, and the operation of the obfuscation processing can be facilitated.

According to a third aspect of the present invention, there is provided a method for processing a recording sheet which is reproducible by removing printing toner adhered to a surface of the recording sheet. The expression content of the figure is disturbed to the extent that it cannot be read. This eliminates the need for a special obfuscation processing material such as an opaque film, thereby saving material costs.

According to a fourth aspect of the present invention, in the method for processing a reproducible recording sheet according to the third aspect, the layout of the toner is disturbed by passing between a pair of heating rollers. As a result, the material cost can be saved, and the reproducing process can be easily performed by the conventional printing toner removing operation, so that the reproducing process operation is not complicated.

According to a fifth aspect of the present invention, in the method for processing a reproducible recording sheet according to the third aspect, the layout of the toner is disturbed by passing between a pair of grindstone rollers. This not only saves material costs, but also allows the reproduction process to be performed by the conventional printing toner removal operation,
Reproduction processing work is not complicated.

According to a sixth aspect of the present invention, there is provided a method of processing a recording sheet which is reproducible by removing printing toner adhered to the surface, wherein the surface of the recording sheet to which the toner is adhered has a character or graphic expression content. Is attached so that the toner cannot be read. This allows
By using the printing toner to perform the obfuscation process,
The obfuscation processing can be performed without preparing a new obfuscation processing material, and the reproduction processing can be removed together with the image forming toner on the sheet surface by the conventional toner removal operation.

According to a seventh aspect of the present invention, there is provided an apparatus for processing a reproducible recording sheet, comprising an image obfuscation processing unit according to at least one of the first to sixth processing methods.

According to a preferred embodiment of the present invention, as a recording sheet storage device, any one of a sheet discharge unit of a processing device having an image obfuscation processing unit and a sheet supply unit of a sheet reproducing device for removing toner from the recording sheet is used. It is also detachable, and is configured to store a plurality of sheets in a stacked manner. As a result, the sheets that have been subjected to the obfuscation processing by the obfuscation processing apparatus and discharged to the storage device can be set in the sheet supply unit of the sheet reproducing apparatus without replacement, and subjected to the reproduction processing. That is, a series of operations of the obfuscation processing and the reproduction processing can be performed efficiently and while maintaining confidentiality.

According to a ninth aspect of the present invention, a plurality of recording sheets to be stored are made invisible by an opaque bottom wall, an upper wall, left and right side walls, and front and rear end walls. And a sheet insertion port and a sheet discharge port are formed in front and rear end walls. As a result, when the used recording sheet on which the confidential content is recorded is once stored, there is no danger of leaking to the outside, and the confidential state is maintained while being attached to the sheet reproducing device or the obfuscation processing device. For playback or obfuscation.

The invention according to claim 10 is the invention according to claim 8 or 9
The storage device for a reproducible recording sheet described above is characterized in that it has a measuring means for measuring the amount of the recording sheet stored inside the storage device. As a result, it is possible to manage the recording sheets to be reproduced while keeping the confidential information invisible from the outside.

According to an eleventh aspect of the present invention, in the storage device for a reproducible recording sheet according to the tenth aspect, there is provided a display means for displaying an amount of the recording sheet stored in the storage device. . As a result, the amount of recording sheets to be processed can be easily determined while keeping the confidential information invisible from the outside.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [Structure of reproducible recording sheet]
FIG. 1 is a cut-away enlarged perspective view of a reproducible recording sheet S according to the present invention, in which a water-swellable surface layer 2 is formed on both front and back surfaces of a base layer 1 such as paper or OHP sheet. An image or a character is formed by attaching the toner 3 to the surface layer 2 using a copying machine or a printer. In some cases, the water-swellable surface layer 2 is formed only on one side.

The base material layer 1 preferably has water resistance, heat resistance and appropriate mechanical strength. The surface layer 2 is made of a water-swellable resin. The water-swellable resin is formed, for example, by crosslinking a water-soluble resin, and has a property of swelling in water or an aqueous solvent but not dissolving. I have.

[Specific Example 1 of Obfuscation Processing Apparatus and Obfuscation Processing Method] FIG. 3 shows an obfuscation processing apparatus that performs obfuscation processing by bonding an opaque film 6 to an image forming surface of a recording sheet S. 10, a paper feed cassette 11 for storing a plurality of used recording sheets S in order from the paper feed side,
, A pair of heating rollers 13, and a paper discharge tray 14, and an opaque film supply roller 15, an opaque film cutting cutter 16, and a cutter receiver 17 are arranged between the control roller 12 and the heating roller 13. . The opaque film 6 is supplied from the opaque film supply roller 15 to the cutter 16 and the cutter receiver 1.
7 so as to be guided to the upper surface of the recording sheet S between the heating rollers 13.

An opaque film supply roller 15 disposed above,
In addition to the opaque film cutting cutter 16 and the cutter receiver 17, the opaque film supply roller 15, the opaque film cutting cutter 16 and the cutter receiver 17 are similarly arranged below as indicated by the imaginary line, and are provided on the lower surface of the recording sheet S. Alternatively, the opaque film 6 may be bonded. That is, it is also possible to adopt a structure in which both sides of the recording sheet on which images are formed on the front and back sides are simultaneously subjected to the obfuscation processing.

The heating temperature of the heating roller 13 is preferably set lower than the melting point of the toner for forming an image. The paper cassette 11 holds a certain amount of recording sheets S.
It is preferable that an opaque lid 19 be provided to store the recording sheet S so that the recording sheet S cannot be seen from the outside and can be opened only by a dedicated key.

FIG. 2 is a cut-away enlarged perspective view of the opaque film 6 used in the obfuscation processing apparatus 10 shown in FIG. 3, and has an adhesive layer 7 integrally on one side. The opaque film 6 and the adhesive layer 7 are preferably made of a water-soluble resin, and by making them water-soluble, they can be easily removed by immersion together with the toner in a sheet regeneration process described later. Further, the opaque film 6 and the adhesive layer 7 may be made of a hydrophilic or water-absorbing resin.
Further, it may be made of a material having a porous structure through which an aqueous solvent can penetrate. This is because, in the same manner as in the case of using the water-soluble resin, the sheet can be easily removed by immersion together with the toner in a sheet reproducing apparatus described later.

In FIG. 3, the used recording sheets S of the paper feed cassette 11 are fed out one by one by a control roller 12, and an opaque film 6 supplied from above is disposed below an adhesive layer 7 before a heating roller 13. And is fed between the heating rollers 13.

The adhesive layer 7 is melted by being heated and pressed at a constant pressure between the heating rollers 13, so that the opaque film 6 is adhered to the image forming surface of the recording sheet S. The opaque film 6 is cut to the same length as the recording sheet S by the cutter 16 and discharged to the discharge tray 14. The rotation speeds of the two heating rollers 13 may be set to the same value. However, by providing a peripheral speed difference, the surface of the recording sheet S passes through the heating roller 13 while being slightly rubbed. You can also.

FIG. 6 is a cut-away enlarged perspective view of the recording sheet S which has been subjected to the obfuscation processing by the obfuscation processing apparatus 10 of FIG. 3. The image forming surface of the recording sheet S has an opaque film 6 with an adhesive layer 7 interposed therebetween. , Making it impossible to read image and character information.

[Specific Example 2 of Obfuscation Processing Apparatus and Obfuscation Processing Method] FIG. 4 shows an example in which the toner on the image forming surface is softened and melted by the heating roller 21 to disturb the layout of the toner. It is a reading processing device 10.

The paper feed cassette 11, the feeding roller 12,
The heating roller 21 includes a pair of heating rollers 21 having a built-in halogen heater and the like, and the heating rollers 21 are pressed against each other with an appropriate pressure. The surface temperature of the heating rollers 21 is such that the toner made of thermoplastic resin can be softened and melted. For example, 120 ° C ~
Heated to about 180 ° C.

In FIG. 4, the used recording sheets S in the paper feed cassette 11 are fed out one by one by the operating roller 12 and fed between the heating rollers 21.

By being heated and nipped at a constant pressure between the heating rollers 21, the image forming toner on the recording sheet surface is melted, the image is deformed or crushed, and the image is partially peeled off from the recording sheet S. And adheres to the heating roller 21. Further, the toner adhered to the heating roller 21 adheres again to the image forming surface of the recording sheet S, and the image on the sheet surface is disturbed and becomes in an unreadable state.

The recording sheet S that has been subjected to the unreadable processing due to the disturbance of the toner layout as described above is discharged to the discharge tray 14.

FIG. 7 is a cut-away enlarged perspective view of the recording sheet S that has been subjected to the obfuscation processing by the obfuscation processing apparatus 10 of FIG. 4, and the toner 3 is randomly scattered on the surface layer 2 of the recording sheet S. And no longer exists as an image or character information.

[Specific Example 3 of Obfuscation Processing Apparatus and Obfuscation Processing Method] FIG. 5 shows that the same toner as the toner for image formation is dropped on the image forming surface of the recording sheet S, and the image is heated and melted. An obfuscation processing device 10 that makes the entire formation surface squeezed with toner.

The paper feed cassette 11, the feed roller 12,
A coating toner supply unit 23 and a pair of heating rollers 25 are provided. The pair of heating rollers 25 are pressed against each other with an appropriate pressure, and their surface temperatures are set so that the toner made of thermoplastic resin is softened and melted. As high as possible, eg 1
It is heated to about 20C to 180C.

Although unused toner can be stored and used in the toner supply unit 23, it is also possible to reuse toner collected by a sheet reproducing apparatus described later from the viewpoint of resource saving.

In FIG. 5, the recording sheet S fed out one by one by the operating roller 12 is subjected to toner falling on the entire image forming surface in the toner supply unit 23, and then heated between the heating rollers 25. The toner is melted by being squeezed at a constant pressure, so that the toner adheres to the entire surface of the recording sheet almost completely.

FIG. 8 is a magnified cutaway view of the recording sheet S subjected to the obfuscation processing by the obfuscation processing apparatus 10 of FIG.
The original image or character forming toner 3 indicated by the virtual line is in an unreadable state.

[Specific Example 4 of Obfuscation Processing Apparatus and Obfuscation Processing Method] Although not shown, a pair of grindstone rollers are provided, and the recording sheet is passed between the grindstone rollers to thereby form an image forming surface of the recording sheet. By performing grinding and disturbing the layout of the toner, an obfuscation process can be performed. Further, in addition to the grindstone roller, for example, a pair of protrusion rollers having a large number of minute protrusions on the surface are provided, and the toner is destroyed on the surface of the recording sheet by the protrusions, so that the layout is disturbed and the readout processing is performed. Can also.

[Specific Example 1 of Storage Device for Recording Sheet] FIG. 9
Indicates a recording sheet storage device 42 that can be attached to both the sheet discharge unit 30 of the obfuscation processing device 10 and the sheet supply unit 41 of the sheet reproduction device 40.

The obfuscation processing device 10 has the same structure as the heating roller type obfuscation processing device 10 described with reference to FIG. 4, for example, and includes a pair of heating rollers 13. The sheet regenerating apparatus 40 includes a control roller 49, a separation / feed mechanism (separation mechanism) 43, an immersion section 44, a rotary brush type toner removal section 45, and a rinsing section along a sheet conveyance path indicated by an arrow from the sheet supply section 41. 46, drying section 47 and sheet discharge section 48
Are provided in order. The separation / feed mechanism 43 includes a feed roller 51 and a separation pad 52 that comes into pressure contact with the feed roller 51, and feeds the recording sheet S while eliminating double feeding. The immersion part 44 mainly includes water in the immersion tank 54,
An immersion liquid to which about 0.005 to 0.1% of a surfactant is added is injected. The rinsing unit 46 includes a shower nozzle 56 that sprays a rinsing liquid on both the front and back surfaces of the recording sheet S, and the drying unit 47 includes a hot air circulation mechanism and a drying fan.

The storage device 42 for recording sheets S has a movable floor 62 which can be turned up and down on a rotation support shaft 61 as a fulcrum on the bottom wall of a cassette main body 60 of a housing type. Movable floor 62
Is supported by the rotation support shaft 61 in the vicinity of an intermediate portion in the longitudinal direction of the cassette main body 60, and one end side in the longitudinal direction of the cassette main body 60 moves up and down.

A spring 63 for urging the movable floor 62 upward is contracted between the movable floor 62 and the concave bottom wall of the cassette main body 60. Is provided with a lock 65 mechanism, by which the movable floor 62 can be locked at the lowered position against the spring 63.

FIG. 10 shows a specific example of the lock mechanism 65, in which a lock pin 67 is provided on the lower surface of the movable floor 62, and a locking lever 68 is rotatably provided on the end wall of the cassette body 60. The locking lever 68 has one end projecting outside the cassette main body 60 and the other end protruding into the cassette main body 60 to engage with the lock pin 67 from above.
It is urged in a direction opposite to the side, and is locked and held by a stopper 71 in the illustrated locked state.

That is, in the locked state shown in FIG.
The movable floor 62 is held at the lowered position. When one end of the locking lever 68 is pushed from the outside in the direction of arrow R, the lock is released, and the movable floor 62 is raised by the spring 63.
When the movable floor 62 is pushed down from the raised position, the lock pin 67 is lowered while pushing and opening the locking lever 68, and when the locking pin 68 gets over the locking lever 68 in the downward direction, as shown in FIG.
Automatically locks like 0.

The sheet feeding section 41 of the sheet reproducing apparatus 40 is provided with a pressing projection 72 against which one end of the locking lever 68 comes into contact when the cassette body 60 is inserted.

When the storage device 42 is to be mounted on the obfuscation processing device 10, the opposite side of the movable floor 62 is inserted into the sheet discharge section 30 as shown in FIG. The movable floor 62 is kept in a lowered state. The recording sheets S subjected to the obfuscation processing by the obfuscation processing device 10 are sequentially stored in the cassette main body 60 in a stacked state.

When a certain amount of unread recording sheets S are stored in the cassette main body 60, the cassette main body 60
Is taken out of the obfuscation processing device 10, carried to the sheet reproducing device 40 as it is, and inserted into the sheet supply unit 41 from the movable floor side. In this case, even if the sheet reproducing device 40 is installed in a place different from the office where the obfuscation processing device 10 is installed, the recording sheet S in the obfuscated state is transported together with the storage device. No secrets are leaked.

When the cassette main body 42 is completely inserted into the sheet feeding section, one end of the locking lever 68 abuts on the projection 72 of FIG. 10 and the lock is automatically released by rotating in the direction of arrow R. You.

Then, the movable floor 62 is raised by the spring 63, and stops in a state where the uppermost sheet S abuts on the control roller 49 at a constant pressure as shown in FIG. That is, the preparation for the reproduction process is completed.

When the sheet reproducing device 40 is started,
The uppermost sheet S is fed out by the operation roller 49, and the separation / feeding mechanism 43 eliminates double feeding while removing 1 sheet.
The recording sheets S are fed into the dipping section 44 one by one.

In the immersion section 44, the entire recording sheet is immersed in the immersion tank 54 so that the surface layer 2 of the recording sheet S
Swell, and the toner on the surface peels off.

Next, in the toner removing section 45, the toner on the sheet surface is scraped off by the rotating brush 55, and in the rinsing section 56, the toner remaining on the sheet surface is washed away and sent to the drying section 47.

After being dried in the drying section, the sheet discharge section 48
Is discharged to the discharge tray. Also, the sheet reproducing device 40
When the processing is performed, the confidential information is not leaked even if a third party performs the sheet reproduction processing, because the read processing is performed.

[Specific Example 2 of Recording Sheet Storage Apparatus] FIG.
Reference numeral 1 denotes a confidentiality storage device 81 designed so that the image content of the recording sheet S cannot be read from the outside and the recording sheet S cannot be taken out by hand. Bottom wall 82, left and right side walls 83, both end walls 8 in the length direction
4, 85 and the upper wall 86 are made of an opaque material, and a slit-shaped sheet insertion port 90 is provided on the upper surface of one end in the longitudinal direction.
Are formed. Assuming that the side where the sheet insertion port 90 is formed is the front end, the opposite end wall 85 of the sheet insertion port 90, that is, the rear end wall 85 is opened rearward via the hinge 92.

A slide cover 87 is provided at the rear of the upper wall 86. The slide cover 87 is slidable forward on guide rails 89 at both right and left ends until it comes into contact with a stopper 88, and slides forward. By doing so, the rear part of the upper wall 86 is opened.

At the front end in the storage device 81, an inclined guide 9 is provided.
1 is formed so that the recording sheet S inserted from the insertion port 90 can smoothly slide into the storage device 81. The bottom wall 82 is provided with a movable floor 93 whose rear part moves up and down via a hinge 94.

The inclined guide 91 is provided with a counter 100 for counting the number of recording sheets to be inserted, and a display panel 101 is provided on the upper wall 86 of the storage device 81.

FIG. 12 shows an example of the display panel 101, which includes a count number display section 102 and a full warning lamp 10.
3 are provided. The full warning lamp 103 is turned on or off in a state where the recording sheets in the storage device 81 are full or a predetermined number of sheets have been reached just before the recording sheets in the storage device 81 are full by the count number or the sheet stacking height detecting mechanism. Flashes.

FIGS. 13 and 14 show a specific example of the counter 100. A swinging rod 111 projecting upward through a slit 110 of the inclined guide 91 is rotatable via a rotating shaft 112. The light-shielding portion 111a is integrally formed at the lower end of the swinging rod 111.
1a is located between the light emitting element 120 and the light receiving element 121 facing the light emitting element 120 as shown in FIG. That is, normally, the light of the light emitting element 120 is blocked by the light blocking portion 111a, and the recording sheet S passing over the inclined guide 91 is
When the swing rod 111 swings once when it comes into contact with and passes through, the space between the two elements 120 and 121 is opened once. Thereby, the light reaches the light receiving element 121 and is counted once.

FIGS. 15 to 18 show the storage device 8 of FIG.
1 illustrates an operation of attaching the sheet No. 1 to, for example, a sheet supply unit of a sheet reproducing apparatus. FIG. 15 shows a state before mounting.
A plurality of recording sheets S are stored in a stack on the movable floor 93 of the bottom wall 82, and the slide cover 87 is in a closed state.

In FIG. 16, when the storage device 81 is inserted into the sheet supply section of the sheet reproducing device, the slide lid 87 is pushed forward by the push rod 133 of the sheet reproducing device, and is locked by the stopper 88 so that The rear portion of the wall 86 is open. The sheet feeding roller 130 of the sheet reproducing device descends into this opening. The paper feed roller 130 includes a pair of roller members 131 and 132, and the width thereof is set smaller than the inner dimension of the storage device 81.

In FIG. 17, a pair of roller members 13
1 and 132, the upper roller member 132 starts to fall rearward with the lower roller member 131 as a fulcrum, and accordingly, the rear end wall 85 of the storage device 81 also starts to open rearward.

In FIG. 18, when the paper feed roller 130 falls down to a substantially horizontal position, the movable floor 93 of the storage device 81 rises, and the uppermost recording sheet S comes into contact with the front roller member 131. This enables sheet supply. That is, the uppermost recording sheet S is pulled out by the front roller member 131, and the recording sheet S is separated from the rear roller member 132 and the pad 85a formed on the upper surface of the rear end wall 85 one by one. Is supplied into the sheet reproducing apparatus.

The sheets stored in the storage device 81 as described above cannot be read from the outside before and after being mounted on the sheet reproducing device, and cannot be taken out by hand. .

It is also possible to mount the confidentiality storage device 81 of FIG. 11 on the sheet supply unit of the obfuscation processing device 10. When the recording sheets S in the storage device 81 are full or when the number of the recording sheets has reached a predetermined number or more, a notifying unit or a communication unit for notifying that may be provided.

[Specific Example 1 of Sheet Reproducing Apparatus] FIG. 19 shows a specific example of the sheet reproducing apparatus (sheet cleaning apparatus). It has basically the same structure as the sheet regenerating apparatus 40 shown in FIG. 9, and in order from the sheet transport start end side, a sheet supply unit 41, a dipping unit 44, a rotary brush type toner removing unit 45, a drying unit 47, and a sheet. A discharge section 48,
In addition to these process units, the sheet supply unit 41 and the dipping unit 4
4, a pre-drying unit 140 is provided. Pre-drying section 140
Is composed of a pair of heating rollers 141. Also,
The drying section 47 is provided with a drying roller 143.

By providing the pre-drying unit 140,
Particularly, in the sheet S having a large amount of moisture absorption in a high humidity environment, the amount of moisture absorption is reduced in the pre-drying step, so that good toner removal can be performed.

The basic operation is the same as in FIG. When the opaque film 6 is adhered to the recording sheet S as shown in FIG. 6, the opaque film 6 and the adhesive layer 7 are water-soluble, hydrophilic, water-absorbing, If the sheet reproducing apparatus shown in FIG. 19 is water-permeable and has such a strength that it is easily broken and removed by the action of the above-described toner removing section 45 in a state where the sheet is separated from the recording sheet S, It is valid. If water-soluble, the opaque film 6 and the adhesive layer 7 can be dissolved and removed in the immersion tank 54. on the other hand,
In the case of hydrophilicity, water absorption or water permeability, the opaque film 6
The adhesive layer 7 swells due to the action of water reaching the surface layer of the recording sheet in the immersion tank 54, thereby weakening the adhesive force with the surface of the recording sheet. Is done.

[Specific Example 2 of Sheet Reproducing Apparatus] FIG. 20 shows a state in which the confidentiality storage device 81 of FIG. 11 is mounted on the sheet supply section 41 of the sheet reproducing apparatus.

[Specific Example 3 of Sheet Reproducing Apparatus] FIG.
In addition to the process section of the sheet recycling apparatus of FIG.
This is an example in which a heating roller 161 for heating an opaque film is further disposed between the sheet supply unit 41 and the sheet supply unit 41. In this sheet reproducing apparatus, the water-soluble, hydrophilic, water-absorbing or permeable material is used as the opaque film 6 and the adhesive layer 7 of the recording sheet S which has been subjected to the unreadable processing by bonding the opaque film 6 as shown in FIG. This is effective when a material having no is used. That is,
The opaque film 6 and the adhesive layer 7 are peeled from the recording sheet S by the heat of the heating roller 161. The peeled opaque film 6 and the adhesive layer 7 may be wound by a winding device (not shown), or may be scraped off in a toner removing step.

The temperature of the heating roller 161 is preferably set lower than the toner melting temperature, as in the case of bonding the opaque film. Incidentally, if the temperature is higher than the toner melting temperature, the fixing force between the recording sheet and the toner increases, which affects the toner removing step. The adhesive layer 7
Is preferably lower than the melting temperature of the toner.

Further, the heating temperature of the heating roller 161 is:
It is preferable that the temperature is lower than the melting temperature of the adhesive layer 7 so that the adhesive layer does not melt. Incidentally, unless the adhesive force between the adhesive layer 7 and the toner or the sheet is smaller than the adhesive force between the opaque film 6 and the adhesive layer 7, the adhesive layer 7 cannot be peeled off satisfactorily. Therefore, it is necessary to increase the adhesive strength between the opaque film 6 and the adhesive layer 7.

[Specific Example 4 of Sheet Reproducing Apparatus] FIG.
The sheet feeding section 41 has two paper feed cassette mounting openings 41.
1 shows a sheet reproducing apparatus provided with a and 41b. A normal recording sheet S is provided in the upper paper feed cassette mounting port 41a.
Is attached, and a security storage type storage device 81 described with reference to FIG. 11, for example, is attached to the lower mounting opening 41a as a paper supply cassette for storing the recording sheet S on which the confidential image is formed. is there.

Further, the lower security-retaining type storage device 81 is reproduced more preferentially than the upper normal paper cassette 99.

For example, if a recording sheet is stored in the security-retaining storage device 81 set in the lower mounting opening 41b, processing is automatically started from the recording sheet in the storage device 81. I have. Of course, it is also possible to adopt a configuration in which the user issues an instruction for priority processing on a panel on the operation panel.

[0076]

According to the first aspect of the present invention, there is provided a method for processing a recording sheet which is reproducible by removing printing toner adhered to the surface. Since the film is adhered, the image on the sheet surface can be easily and firmly covered, and the leakage of confidential information can be reliably prevented until the used recording sheet is reproduced. Also,
Due to the obfuscation processing, even if a third party performs the sheet reproduction processing, the secret is not leaked.

(2) According to the first aspect of the present invention, when the adhesive layer is formed integrally with the opaque film in the first aspect, the operation of bonding the opaque film to the recording sheet is simplified. And the obfuscation work becomes easier.

(3) In a method for processing a recording sheet which can be reproduced by removing the printing toner attached to the surface, the method according to the third aspect of the present invention, If the layout is disturbed to the extent that the text or graphic expression is unreadable,
No special obfuscation material such as an opaque film is required, and material costs can be saved.

(4) In the method for processing a reproducible recording sheet according to the third aspect, as in the fourth aspect,
By disturbing the toner layout by passing between a pair of heating rollers, material costs can be saved, and regeneration processing can be easily performed by conventional printing toner removal work, which complicates regeneration processing. do not do.

(5) In the method of processing a reproducible recording sheet according to the third aspect, as in the fifth aspect,
If the toner layout is disturbed by passing between the pair of grindstone rollers, the material cost can be saved, and the regenerating process can be performed by the conventional printing toner removing operation, so that the regenerating process does not become complicated.

(6) In a method of processing a recording sheet which can be reproduced by removing printing toner adhered to the surface as described in the sixth aspect of the invention, the surface of the recording sheet to which the toner is adhered has a character Alternatively, if the toner is attached to such an extent that the contents of the figure cannot be read, the obfuscation process is performed using the printing toner, and the obfuscation is performed without preparing new obfuscation material. The toner can be removed together with the image forming toner on the sheet surface by a conventional toner removing operation in the regenerating process.

(7) The sheet discharging section of the processing apparatus having the image obfuscation processing section as the storage apparatus for the recording sheet, and the sheet reproducing apparatus for removing the toner of the recording sheet as the storage apparatus for the recording sheet. If it is detachable to any of the sheet supply units and is configured to store a plurality of sheets in a stacked state, the obfuscation processing device performs obfuscation processing, and the sheets discharged to the storage device are processed. It can be set in the sheet supply unit of the sheet reproducing apparatus without replacement, and can be subjected to the reproducing process while maintaining the confidentiality. That is, a series of operations of the obfuscation processing and the reproduction processing can be performed efficiently and while maintaining confidentiality.

(8) Even when the sheet reproducing apparatus cannot be installed in the office, the obfuscation processing apparatus first performs the obfuscation processing, stores the obfuscated state in the storage device, and collectively installs the sheets which are later installed in another place. It is also possible to carry it to a playback device and perform playback processing while maintaining confidentiality. In addition, when reproducing a confidential document, there is no need to perform or attend a sheet reproduction process by a person or person in charge of confidentiality maintenance.

(9) According to the ninth aspect of the present invention, the plurality of recording sheets stored in the sheet storage device can be viewed from the outside by the opaque bottom wall, upper wall, left and right side walls, and front and rear end walls. If it is covered so that it cannot be removed by hand, and if the front and rear end walls have a sheet insertion port and a sheet discharge port, the used recording sheet on which the confidential content is recorded is temporarily stored. In this case, there is no possibility of leakage to the outside, and the apparatus can be attached to a sheet reproducing apparatus or an obfuscation processing apparatus for reproduction or obfuscation processing while maintaining a confidential state.

(10) As described in the tenth aspect,
When a weighing unit for measuring the amount of the recording sheets stored in the storage device is provided, the recording sheets to be reproduced can be managed in a state in which the recording sheets cannot be seen from the outside and are kept secret.

(11) If the display means for displaying the amount of the recording sheets stored in the storage device is provided as in the invention of the eleventh aspect, it is invisible from the outside and the confidentiality is maintained. The amount of recording sheets to be processed can be easily determined.

[Brief description of the drawings]

FIG. 1 is a cut-away enlarged perspective view of a reproducible recording sheet.

FIG. 2 is a cut-away enlarged perspective view of an opaque film according to the present invention.

FIG. 3 is a schematic vertical sectional view of an obfuscation processing apparatus to which the present invention is applied.

FIG. 4 is a schematic vertical sectional view showing another example of the obfuscation processing apparatus to which the present invention is applied.

FIG. 5 is a schematic vertical sectional view showing another example of the obfuscation processing device to which the present invention is applied.

FIG. 6 is an enlarged perspective view of a recording sheet subjected to an unreadable processing.

FIG. 7 is a cut-away enlarged perspective view of the recording sheet subjected to the obfuscation processing.

FIG. 8 is a cut-away enlarged perspective view of a recording sheet subjected to an obfuscation process.

FIG. 9 is a schematic vertical sectional view of a storage device, an obfuscation processing device, and a sheet reproducing device to which the present invention is applied.

FIG. 10 is a partially enlarged sectional view of the sheet storage device of FIG. 9;

FIG. 11 is a perspective view of a storage device to which the present invention is applied.

12 is an enlarged plan view of the display panel of FIG.

13 is an enlarged cross-sectional view of the counter of FIG.

FIG. 14 is a view taken in the direction of the arrow XIV in FIG. 13;

15 is a perspective view showing a state before the storage device of FIG. 11 is mounted on the sheet reproducing device.

FIG. 16 is a perspective view showing a state in which the storage device of FIG. 11 is being mounted on the sheet reproducing device.

17 is a perspective view showing a state in which the storage device of FIG. 11 is being mounted on the sheet reproducing device.

FIG. 18 is a perspective view showing a state where the storage device of FIG. 11 is mounted on a sheet reproducing device.

FIG. 19 is a schematic longitudinal sectional view showing an example of a sheet reproducing apparatus.

FIG. 20 is a schematic longitudinal sectional view showing an example of a sheet reproducing apparatus.

FIG. 21 is a schematic longitudinal sectional view showing an example of a sheet reproducing apparatus.

FIG. 22 is a schematic longitudinal sectional view showing an example of a sheet reproducing apparatus.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Base material layer 2 Surface layer 3 Toner 6 Opaque film 7 Adhesive layer 10 Unread processing device 15 Opaque film supply roller 21 Heating roller 23 Toner supply part 25 Heating roller 42 Recording sheet storage device 81 Storage of confidentiality type recording sheet Apparatus 100 Counter (an example of a weighing unit) 101 Display panel (an example of a display unit that displays the amount of recording sheets)

────────────────────────────────────────────────── ─── of the front page continued (51) Int.Cl. ⁷ identification mark FI theme Court Bu (reference) B65H 43/08 B65H 43/08 F-term (reference) 2C061 AQ06 AS11 CL10 GG07 GG15 GG40 2H134 KG10 NA36 NA38 PA03 PB08 PC03 PD18 PD19 PE01 3F048 AB01 BA05 BC04 CA05 CC02 DA09 DC13 EB40 3F054 AA01 AB01 BA02 BC08 BC13 BJ04 CA06 CA23 CA37 DA22 3F343 FA02 GA03 GB01 GC01 GD01 HA01 HA06 HA33 HB03 HB07 HC07 HC11 HC15 HC16 HC17 HC26 HC28 LA19 LD04 MA04

Claims (11)

[Claims] 1. A method for processing a recording sheet that can be reproduced by removing printing toner adhered to the surface, wherein an opaque film is adhered to the surface of the recording sheet to which the toner is adhered. Processing method of the recording sheet. 2. The method according to claim 1, wherein the opaque film has an adhesive layer. 3. A method for processing a recording sheet that can be reproduced by removing printing toner attached to the surface of the recording sheet, wherein the layout of the toner attached to the surface of the recording sheet is interpreted in terms of text or graphic expression contents. A method for processing a reproducible recording sheet, characterized in that the recording sheet is disturbed to an extent that it cannot be performed. 4. A method for processing a reproducible recording sheet according to claim 3, wherein the layout of the toner is disturbed by passing between a pair of heating rollers. 5. The method for processing a reproducible recording sheet according to claim 3, wherein the layout of the toner is disturbed by passing between a pair of whetstone rollers. 6. A method for processing a recording sheet that can be reproduced by removing printing toner attached to the surface, wherein the surface of the recording sheet to which the toner is attached is renewed to the extent that characters or graphics cannot be read. A method for processing a reproducible recording sheet, wherein toner is attached to the recording sheet. 7. A reproducible recording sheet processing apparatus having an image obfuscation processing unit according to at least one of the processing methods according to claim 1. 8. A sheet ejecting section of a processing apparatus having the image obfuscation processing section according to claim 7, and a sheet feeding section of a sheet reproducing apparatus for removing toner from a recording sheet, wherein the sheet ejecting section is detachable. A reproducible recording sheet storage device that stores a plurality of sheets in a stack. 9. An opaque bottom wall, an upper wall, left and right side walls and front and rear end walls cover a plurality of recording sheets to be stored so as to be invisible from the outside and cannot be taken out by hand. A storage device for reproducible recording sheets having a sheet insertion port and a sheet discharge port formed in an end wall. 10. A reproducible recording sheet storage device according to claim 8, further comprising a measuring means for measuring an amount of the recording sheet stored in the storage device. Seat storage device. 11. The reproducible recording sheet storage device according to claim 10, further comprising display means for displaying an amount of the recording sheets stored in the storage device. Storage device.