JPH04234056A - Copying device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying machine equipped with a recycling section that allows used paper to be reused.

0002

[Prior Art] It is said that the amount of copying paper used in Japan today exceeds 1 million tons per year.
Recycling of used copy paper is attracting attention as part of global environmental issues. However, since the main reuse technology currently being tested is a method of making recycled paper by mixing waste paper and used copy paper, the premise is to build a system to collect used paper in a recyclable form. In addition, general corporate entities have not been able to break away from the method of disposing of used paper containing internal confidential information and incinerating it because it is extremely difficult to transport the paper to prevent it from leaking outside.

[0003] In addition, recycled paper manufacturing equipment and recycled paper manufacturing costs are expensive, and despite the high cost, the market cannot be developed unless the price of recycled paper is lower than the price of paper made from virgin pulp. and many other problems.

0004

[Problem to be solved by the invention] In recent years, as a countermeasure to this problem, white paint has been applied to the letters and figures on used paper for the purpose of erasing those letters and figures, and there has also been a method of chemically erasing the letters and figures. (Unexamined Japanese Patent Publication No. 133458/1983)
is proposed. This method targets both wet and dry used paper, but due to the white paint and chemicals applied to the surface to erase characters and figures, the surface smoothness is insufficient, resulting in poor copy quality when reused. There are also problems in that the recycling of wet-copied paper requires a chemical method, which makes the equipment complicated.

The present invention has been made in view of the above circumstances, and its purpose is to eliminate used paper or copy paper by installing a paper recycling section for recycling used paper within the main body of the apparatus. etc. immediately on the spot,
The object of the present invention is to provide a copying device that can be reused.

[0006]

[Means for Solving the Problems] A copying apparatus according to a first aspect of the present invention is characterized in that it includes a paper recycling section for recycling used copy paper. In the copying apparatus according to the second aspect of the present invention, the paper recycling section includes a paper surface polishing means and an abrasive waste collection section, and in the copying device according to the third aspect of the present invention, the paper recycling section is configured to remove the polished paper surface. It is characterized by comprising a coating treatment means for coating with a coating material.

[0007]

[Operation] According to the present invention, after polishing off the developer such as toner on the surface of the used paper, a coating material is applied to the surface and dried, so that it can be reused on the spot. It becomes possible.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to drawings showing embodiments thereof. FIG. 1 is a schematic vertical sectional view of a copying apparatus according to the present invention, and 1 in the figure indicates the main body of the copying apparatus. Further, FIG. 2 is an enlarged view of the reproduction section. A glass document table 2 is provided on the top of the copying apparatus main body 1. A lid 3 that covers the document table 2 is provided on the document table 2, and a scanning optical system 5 is provided below the document table 2. Further, a photoreceptor 6 is provided below the scanning optical system 5.

The lid 3 is supported at one side edge (not shown) by the main body 1 of the copying apparatus so that it can be opened and closed upwardly and downwardly. A document conveyor belt 3a is disposed on the lower surface of the lid 3 facing the document table 2 so as to face substantially the entire surface of the document table 2, and one end of the conveyor belt 3a is placed across the document drawer section 1a on the top surface of the copying apparatus main body 1. A document tray 4 provided on one side of the copying machine main body 1
The other end of the conveyor belt 3a is connected to a document receiving portion 3c provided at the top of the lid 3 with a folded conveyance path 3b provided on the other side of the lid 3 interposed therebetween.

The scanning optical system 5 includes a light source 5b for irradiating the original provided on a movable stage 5a that moves along the bottom of the original table 2, a group of reflectors 5c for setting the optical path of the reflected light from the original, and a group of mirrors 5c for setting the optical path of the reflected light from the original. It includes a lens system 5d for condensing light, a group of mirrors 5e fixed to a machine frame (not shown), and for guiding reflected light from the original to the surface of the photoreceptor 6, and the like.

The photoreceptor 6 is formed into a cylindrical shape with a photoconductor material provided on its outer circumferential surface, and is pivotally supported so as to be able to rotate intermittently clockwise around an axis (not shown). Light is projected onto the circumferential surface of the photoreceptor 6 at an exposure point O by the scanning optical system 5 described above. A charger 7 is disposed around the photoconductor 6 just before the exposure point O where light is projected, and a developing device 8 is installed in the direction of rotation of the photoconductor 6 from here.
, 9, a transfer charger 10, a cleaner 11, an eraser lamp 12, etc. are provided.

The surface of the photoreceptor 6 is first charged by a charger 7, then exposed to light at an exposure point O, and only the portions excluding the exposed portion are charged, and then the surface is charged by a developer 8 or 9. The toner is developed and reaches a position facing the transfer charger 10.

The transfer charger 10 is connected to a recording paper conveyance path 20.
The recording paper that has been transported through the conveyance path 20 is charged at a position facing the transfer charger 10 and faces the photoreceptor 6, The toner image on the surface of the photoreceptor 6 is transferred.

After the toner image has been transferred to the recording paper, the surface of the photoreceptor 6 is cleaned by a cleaner 11, and the charge is erased by an eraser lamp 12, and then the photoreceptor 6 is faced again to the charger 7, and is then brought to face the charger 7 again. The process will be repeated.

Below the photoreceptor 6 in the main body 1 of the copying machine, there is a manual paper feed port 31 and a first paper feed tray 3 on one side wall.
2. A second paper feed tray 33 and a used paper recycling tray 34 are provided, and a paper output tray 35 is provided on the other side wall, and a substantially rectangular loop is provided below the photoreceptor 6. A conveyance path 20, a used paper recycling section 40, and a recycled paper conveyance path 50 are provided.

The conveyance path 20 includes the photoreceptor 6 and the transfer charger 7.
a left-hand conveyance path 21 that extends horizontally from one side wall side of the copying apparatus main body 1 to the other side wall side through a gap between One end is connected to the left end, extends vertically along the other side wall of the copying apparatus main body 1, and has two turn parts 22a, 22 in the middle.
A descending conveyance path 22 having a diameter of
A right conveyance path 23 extends in the right direction, one end is connected to the right end of the right conveyance path 23, extends upward and downward along one side wall of the copying apparatus main body 1, and the other end is connected to the right end of the right conveyance path 23. It consists of an upward conveyance path 24 connected to the right end of the left conveyance path 21, and the upward conveyance path 24 includes this, the manual paper feed port 31, a first paper feed port, a first paper feed port, a second paper feed port
Branch paths 24a, 24b, 24c, 24d are provided to connect the paper feed trays 32, 33 and the recycling tray 34.
A branch path 21a is provided to connect the two.

Each of the conveyance paths 21 to 24 is constructed by combining a plurality of conveyance rollers and a guide plate arranged to connect the conveyance rollers. Reference numeral 26 denotes a switch installed at a branch of the conveyance path.

Used paper recycling unit 40, details of which are shown in FIG.
is a conveyance path 50 which is formed in an area surrounded by the right conveyance path 23, the upward conveyance path 24, and the turn portion 22b of the downward conveyance path 22 in the first conveyance path 20, and which also serves as a part of the conveyance path 20. and a polishing means 4 arranged facing it.
1. It is composed of a coating treatment means 45, a tempering roll 54 which also serves as a conveyance roll of a conveyance path 50, and the like.

The conveyance path 50 includes a diagonal conveyance path 51 and a downward conveyance path 2 in the first conveyance path 20 connected to the lower end thereof.
2, a rightward conveyance path 23, an upward conveyance path 24, and the like. And the oblique conveyance path 51
A polishing means 41 is provided facing the guide plate 51a disposed approximately in the center of the guide plate 51a, and a coating means 45 is provided facing the rightward conveyance path 23.

The polishing processing means 41 includes a polishing whetstone 42, a polishing debris suction nozzle 43, and a polishing debris recovery hopper 44, which are arranged opposite to a guide plate 51a located approximately at the center of the diagonal conveyance path 51.
and a pretreatment roll 52 that constitutes a part of the oblique conveyance path 51
, a post-processing roll 53, and the like. Polishing whetstone 4
2 is provided with a vibrator 42a at its rear end, and is supported by a support portion 42b via a pressing spring 42c with its tip facing the surface of the used paper moving downward on the oblique conveyance path 51. Vibrator 42a with ultrasonic generator 42d
By vibrating the used paper, the surface of the used paper is subjected to high-speed vibration compression, and a portion of the surface of the used paper and the developer are removed by polishing.

The polishing debris suction nozzle 43 is connected to the polishing whetstone 4.
2, with its suction port facing the movement area of the used paper, and a suction pump (not shown) sucks and removes abrasive debris such as peeled toner generated by polishing with the abrasive wheel 42. It has become. The polishing waste collection hopper 44 is disposed below the diagonal conveyance path 51, and of the two collection ports 44a and 44b extending from the hopper 44, the collection port 44a is connected to the upper end of the guide plate 51a and the pretreatment roll 5.
The collection port 44b is opened facing the lower end of the guide plate 51a to receive and collect falling toner and the like.

The pre-processing roll 52 and the post-processing roll 53 are structurally the same, and the pre-processing roll 52 is shown in FIG. FIG. 3 is an enlarged front view of the pretreatment roll 52, and the drawing shows spiral blades 52c in opposite directions.
Two large diameter and small diameter rolls 52a and 52b with
The rollers are arranged opposite to each other across the used paper transport area, and are adapted to contact the front and back surfaces of the used paper to cut and remove part of the surface and the developer.

The coating processing means 45 includes a coating nozzle 46 disposed above the right conveyance path 23 with its outlet facing the movement area of the polished used paper, and a coating nozzle 46 disposed at a predetermined distance from the coating nozzle 46 . It is composed of a hot air dryer 47 facing the downstream side of the right conveyance path 23, a plurality of tempering rolls 54 disposed downstream of the hot air dryer 47, and the like. Application nozzle 46
A coating material tank and a coating material supply pump (not shown) are connected to the machine, and the coating material is applied to the surface of the used paper that has been polished and ground to a thickness approximately equivalent to the thickness of the polished and ground paper. It is supposed to be done. Various coating materials can be used depending on the color of the paper; for example, in the case of white paper, a white pigment suspended in a volatile solvent is used.

The hot air dryer 47 is configured to quickly dry the coating material by blowing hot air heated to a predetermined temperature by a heater or the like (not shown) onto the surface of the paper coated with the coating material using a blower or the like at a predetermined pressure. There is. Of course, it may be directly dried using a heater or the like. The tempering roll 54 has a mirror-finished surface, and applies light pressure to the polished paper surface to smooth out the fuzz of the fibers to make the surface texture uniform, and also to even out the unevenness of the coating material, so that it can be reused. This increases the flatness of the surface during use. Reference numeral 56 is a switching device located at a branch of the conveyance path.

In the device of the present invention, when automatically feeding a document, place the document with the side to be copied facing down on the document tray 4, and press the start button to feed the document. The documents on the tray 4 are positioned one by one on the document table 2 by the document drawer 1a, and scanned by the scanning optical system 5. The reflected light from the original is sequentially projected onto the surface of the rotating photoreceptor 6 by the scanning optical system 5.
An electrostatic latent image is formed on the surface. When the surface of the photoreceptor 6 on which the electrostatic latent image is formed reaches a position facing the developing device 8 or 9, it is developed with a developer such as toner, and a toner image is formed on the surface.

When the surface of the photoreceptor 6 on which the toner image is formed rotates to a position facing the transfer charger 10, the manual paper feed port 31, first and second paper feed trays 32, 33 are opened in synchronization with this. The unused paper pulled out from the paper is guided to the left conveyance path 21 of the first conveyance path 20, and is moved to the left as the photoreceptor 6 rotates, so that the toner image on the photoreceptor 6 is deposited on the surface of the recording paper. transcribed. Photoreceptor 6 after the toner image transfer has been completed
The surface is cleaned by a cleaner 11, static electricity is removed by an eraser 12, and then charged again by a charger 7, and the above-described process is repeated.

On the other hand, after the toner image is transferred and the recording paper is melted and pressed onto the recording paper surface by the fixing roller 25,
The paper is discharged onto the paper discharge tray 35. In addition, when performing two-color printing, the switch 26 provided at the left end of the left conveyance path 21
The recording paper is guided to the downward conveyance path 22 by the turning section 2.
After being reversed twice at 2a and 22b, it is guided again under the photoreceptor 6 through the right conveyance path 23 and the upward conveyance path 24, and is developed in a different color based on the electrostatic latent image obtained through different optical filters. After the toner image is transferred using the agent, it is guided onto the paper discharge tray 35 via the fixing roller 25.

Next, when using used paper, place the paper in the recycling tray 34 with the surface on which the toner image is formed facing up, and press the start button to remove the used paper from the branch path 24d. It is guided to the upward conveyance path 24 and moves upward, and then guided to the diagonal conveyance path 51 by the switch 56 . The used paper first has a toner image cut off by a plurality of pre-processing rolls 52, then its surface is polished by a grinding wheel 42, the surface is cut again by a post-processing roll 53, and then it is transferred to a reversing conveyance path 51b. After being guided to the turn part 22b provided in the middle of the descending conveyance path 22, it turns back and moves from the downward conveyance path 22 to the right conveyance path 23, and in the process of passing under the coating nozzle 46, the surface is coated. The material is applied and then dried with hot air while passing under a hot air dryer 47, and then the surface is smoothed by a tempering roll 54 and recycled.

The recycled paper moves to the upward conveyance path 24,
It passes through the switch 56 and moves to the left conveyance path 21,
It is made to face the photoreceptor 6. The surface of the photoreceptor 6 opposite to the surface coated with the coating material faces, and the toner image is transferred to this surface. If the paper is not to be reused immediately after the recycling process, it is guided from the right end of the right transport path 23 to a recycled paper tray (not shown) by a switch (not shown) and stocked. In the above embodiment, one copying method has been described, but it is possible to combine other methods that can obtain toner images with a reproducing section having the above-mentioned functions.

[0030]

[Effects of the Invention] As described above, since the apparatus of the present invention includes a used paper recycling section in the main body of the copying apparatus, it is possible to quickly recycle used paper on the spot and reuse it immediately. , it is possible to use unused paper and recycled paper properly as necessary, and it is possible to efficiently recycle used paper. In addition, since the used paper recycling section is equipped with a polishing processing means and a coating processing means, it is possible to cut and polish and remove all the toner images on the surface of the used paper, and the surface is coated with a coating material. This prevents the paper from becoming thinner and eliminates transport problems during copying.
In addition, inconveniences such as darkening of the paper due to thinning are eliminated.
The present invention has excellent effects such as being able to be reused without any trouble and producing high-quality copied images.

[Brief explanation of the drawing]

FIG. 1 is a schematic vertical sectional view of the device of the present invention.

FIG. 2 is an enlarged view of a reproduction section.

FIG. 3 is an enlarged front view of the pretreatment roll.

[Explanation of symbols]

1 Copying device main body 2　Manuscript table 3 Lid 4 Scanning optical system 5 Original tray 6 Photoreceptor 7　Charger 8 Developing device 9 Developing device 10 Transfer charger 20 Conveyance path 21 Leftward conveyance path 22 Downward conveyance path 23 Right conveyance path 24 Ascending conveyance path 31 Manual paper feed slot 32 Paper feed tray 33 Paper feed tray 34 Reproduction tray 35 Paper output tray 40 Playback Department 41　Polishing processing section 42 Polishing whetstone 43 Polishing debris suction nozzle 44 Polishing debris collection hopper 45 Coating treatment means 46 Application nozzle 47 Hot air dryer 50 Conveyance path 51 Diagonal conveyance path 52 Pre-treatment roll 53 Post-processing roll 54 Tempering roll

Claims (3)

[Claims] 1. A copying apparatus comprising a paper recycling section for recycling used copy paper. 2. The copying apparatus according to claim 1, wherein the paper recycling section includes a polishing means for polishing the surface of the paper and a means for collecting polishing debris. 3. The copying apparatus according to claim 2, wherein the paper recycling section includes coating processing means for coating the polished paper surface with a coating material.