JP2840486B2 - Cleaning device and printing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning apparatus for reusing printing paper by removing ink from the paper once printed. Further, the present invention relates to a printing machine incorporating the cleaning device.

[0002]

2. Description of the Related Art In recent years, the consumption of printer paper and copy paper has been rapidly increasing due to the adoption of office automation and factory automation at companies, offices, factories, and the like. Problems have arisen such as rising prices of paper and wood due to fluctuations in the balance, and the deterioration of the global environment due to overcutting of forests and the like.

Conventionally, as paper recycling, once used paper is dissolved again in pulp form to remove ink or impurities, or bleached to obtain decolorized pulp, and then papermaking is performed again to recover used paper or paper. The only option was to reuse it as recycled paper.

However, recently, a cleaning method for easily removing a character image on paper once printed has been proposed (Japanese Patent Application No. 63-128946). According to this method, a printed material similar to the conventional one can be obtained by using erasable paper that has been subjected to a release treatment on the surface of the paper, and printing the ink on the erasable paper, while cleaning the printed paper, By covering the surface of the printed matter with a heat-fusible material (cleaning material) in a molten state and then cooling, the ink printed on the character image etc. adheres to the heat-fusible material and removes the ink from the paper. Paper can be reused.

Further, as another method, there has been proposed a method of cleaning by merely passing an erasable paper between a roller having a surface provided with a hot-melt resin in a molten state and a non-adhesive roller without cooling. (Japanese Patent Application Hei 2-
No. 212837), which can perform paper cleaning with a simpler device.

[0006] The features of these methods are that the release-treated paper can be reused hundreds of times, and that the printing ink is made of a heat-fusible material that is the same as the cleaning material. Can be used hundreds of times. Therefore, the consumption of the paper itself is reduced, which is very economical and can contribute to resource saving. In particular, in the latter method, since the cleaning can be performed simply by passing the paper between the two roller pairs, the troublesome work can be eliminated.

[0007]

However, in the conventional method, since the hot-melt resin in a molten state is brought into pressure contact with the erasable paper, the paper and the hot-melt resin come into close contact with each other, and both are pulled. It has become very difficult to remove the paper, and if the leading end of the paper is not caught, the paper is entangled in the machine while being in close contact, and there is a problem that paper jams frequently occur.

An object of the present invention is to provide a cleaning device capable of reliably separating paper and a hot-melt resin in order to solve the above-mentioned problems. The purpose is to provide.

[0009]

In order to achieve the above object, a cleaning apparatus of the present invention heats a printed material printed on a erasable paper, the surface of which has been subjected to a release treatment, with a hot-melt ink. A cleaning device for removing the hot-melt ink from the printed matter by contacting the hot-melt resin in an adhesive state by the adhesive roller, wherein the hot-melt resin is adhered to at least the surface of the hot-melt resin and the adhesive roller A non-adhesive roller for contacting the printed matter, and a peeling member for separating the printed matter and the adhesive roller is inserted into a circumferential groove formed on the surface of the adhesive roller. It is characterized by the following.

Further, the cleaning device of the present invention brings a heat-fusible resin in an adhesive state by heating into contact with a printed matter printed with heat-meltable ink on an erasable paper whose surface has been subjected to a release treatment. A cleaning device that removes the hot-melt ink from the printed material, comprising a pressure-sensitive adhesive roller having a surface coated with the hot-melt resin and a non-adhesive roller for bringing the printed material into contact with the pressure-sensitive adhesive roller. Two or more roller pairs are provided,
A peeling member for separating the printed material and the adhesive roller is inserted in a circumferential groove formed on the surface of the adhesive roller, and a groove portion of each adhesive roller when viewed from the printed material feeding direction. Each roller pair is arranged so that the flat portions of the other adhesive rollers overlap.

Further, the printing machine of the present invention forms a latent image by exposing a photosensitive member charged in advance to form a latent image, deposits toner, transfers the latent image to a printing material, and thermally fixes the printing material to obtain a printed material. In, on the printed matter printed with hot-melt ink on erasable paper subjected to release processing on the surface, by contacting the hot-melt resin in the adhesive state by heating, the hot-melt from the printed matter A cleaning device for removing ink, comprising: an adhesive roller having at least a surface coated with the hot-melt resin; and a non-adhesive roller for bringing the printed matter into contact with the adhesive roller, and formed on a surface of the adhesive roller. A cleaning device in which a peeling member for separating the printed material and the adhesive roller is inserted in the circumferential groove thus formed, Characterized by using the erasable paper that has passed through the cleaning device.

Further, the printing machine of the present invention obtains a printed matter by exposing a photosensitive member charged in advance to form a latent image, attaching toner, transferring the latent image to a printing material, and thermally fixing the toner. In, on the printed matter printed with hot-melt ink on erasable paper subjected to release processing on the surface, by contacting the hot-melt resin in the adhesive state by heating, the hot-melt from the printed matter A cleaning device for removing ink, comprising: an adhesive roller having at least a surface coated with the hot-melt resin; and a non-adhesive roller for bringing the printed matter into contact with the adhesive roller, and formed on a surface of the adhesive roller. A cleaning device in which a peeling member for separating the printed material and the adhesive roller is inserted into the circumferential groove, wherein the printed material is thermally fixed. Wherein the sent to the cleaning apparatus after it has been.

[0013] In the above structure, it is preferable that the peeling member is a flexible wire.

[0014]

According to the above construction, the cleaning device according to the present invention is characterized in that a circumferential groove is formed on the surface of the adhesive roller coated with the hot-melt resin, and a printed material is formed in the groove between the adhesive roller and the non-adhesive roller. Since the peeling member for separating the adhesive roller and the adhesive roller is inserted, even if the printed matter and the adhesive roller once contact, once the printed matter is sent by the rotation of the roller, the leading end of the printed matter is caught by the peeling member. As a result, it is possible to surely separate the adhesive roller so that the adhesive roller is sequentially peeled off from the adhesive roller.

Further, two or more pairs of rollers including an adhesive roller and a non-adhesive roller for performing the above-described cleaning are provided, and the position of the groove in which the peeling member is inserted is determined by each adhesive roller when viewed from the printed material feeding direction. Each roller pair is arranged so that the groove portion of the above and the flat portion of the other adhesive roller overlap, so that the groove of the adhesive roller is not coated with the hot-melt resin in the roller pair before the printed material is sent. The resulting uncleaned portion of the printed matter can be cleaned over the entire surface by the flat portion of the adhesive roller in the subsequent roller pair, that is, the portion where no groove is formed.

Further, the printing machine of the present invention is a so-called electronic device that obtains a printed material by exposing a previously charged photoreceptor to form a latent image, attaching toner, transferring the latent image to a printing material, and thermally fixing the image. Photographic printing machines are equipped with the above-mentioned cleaning device and use erasable paper that has passed through the cleaning device as a printing material, so that printed paper can be reused in the same procedure as conventional copiers and laser printers. Can be printed.

Further, in such an electrophotographic printing machine, by providing the above-described cleaning device after the heat fixing device, the unprinted surface of the printing material is printed first, and then the opposite surface is cleaned. It becomes possible. In addition, the printing medium is sent to the cleaning device in a state where the temperature is increased by the heat fixing, and the time until the hot-melt ink melts can be reduced.

Further, in the cleaning device or the printing machine according to the present invention, since the peeling member is a flexible wire, the leading end of the printed matter is caught by the peeling member and the printed material is separated from the adhesive roller. In addition, the force of the peeling member acting on the printed matter becomes elastic, so that the printed matter can be prevented from being damaged or damaged.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a cleaning device and a printing machine according to the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic view of an embodiment of the cleaning device according to the present invention, and FIG. 1A is a front view thereof.
b is a side view thereof. The surface of the adhesive roller 11 is coated with a heat-meltable resin 12 which is brought into an adhesive state by heating, and a plurality of circumferential grooves 15 are formed at substantially equal intervals. The non-adhesive roller 13 is rotated by a roller driving system (not shown) to feed the printed material while sandwiching the printed material with the adhesive roller 11 so that one surface of the printed material contacts the adhesive roller 11 over the entire surface. It is arranged in.

In the groove 15 between the adhesive roller 11 and the non-adhesive roller 13, a peeling member 14 for separating the printed matter from the adhesive roller 11 is inserted. In order to heat the hot-melt ink attached to the printed matter or to heat the hot-melt resin 12 adhered to the adhesive roller 11, a halogen lamp or an electric heater is applied to the adhesive roller 11, the non-adhesive roller 13, or both rollers. Attach a heating device such as

Next, the operation of the cleaning device will be described. When the adhesive roller 11 whose surface is in an adhesive state by heating rotates, for example, clockwise, the non-adhesive roller 1
3 rotates counterclockwise. In this state, between the non-adhesive roller 13 and the peeling member 14 from the left, the printed matter printed with hot-melt ink on erasable paper whose surface has been subjected to a mold release treatment is printed. Insert so that it touches. Adhesive roller 11 and non-adhesive roller 1
In the contact portion with the print material 3, the printed matter adheres firmly to the adhesive roller 11, but as the roller rotates, the printed material is sequentially peeled from the adhesive roller 11 by the peeling member 14, and
The hot-melt ink on the printed matter is transferred to the adhesive roller 11 and removed from the printed matter, and cleaning is performed. Groove 1
When there is no ink in the portion corresponding to No. 5, the cleaning is completed by one operation, but when the ink exists in the portion corresponding to the groove 15, the ink remains in a striped pattern on the erasable paper. Therefore, in order to remove the remaining ink, when inserting between the non-adhesive roller 13 and the peeling member 14, it is made different from the previous groove position,
By passing through the cleaning device again, the entire surface can be completely cleaned.

Further, two or more cleaning devices shown in FIG. 1 are connected in cascade, and a portion corresponding to the groove position where the preceding cleaning device could not clean is described.
By setting the subsequent cleaning device to perform cleaning, the printed matter can be completely cleaned in one pass.

By using a rigid member such as a bar or plate made of metal or plastic for the peeling member 14, the cleaning device of the present invention can be easily obtained. However, a rigid member cannot easily reduce the fluctuation of the peeling force, so that the erasable paper tends to be easily damaged. Therefore, it is preferable to use a flexible wire as the peeling member 14, and by adjusting the tension of the wire, the fluctuation of the peeling force can be reduced, so that the erasable paper can be prevented from being damaged. . In addition, in order to reduce the uncleaned portion, it is preferable to reduce the groove width of the adhesive roller and insert a thin peeling member. In particular, insert a wire twisted with a thin and high-strength metal thread. Is preferred.

The peeling member 14 can be provided with a mechanism that moves with the rotation of the roller. For example, a flexible wire is formed in a ring shape, and the adhesive roller 1 is formed.
2 can be smoothly separated from the printed material and the adhesive roller 12 while the peeling member 14 moves with the rotation of the roller.

FIG. 2 is a schematic side view of an embodiment of the printing press according to the present invention. In this embodiment, a description will be given of a printing machine incorporating a multi-stage cleaning device in which the above-described cleaning device includes two stages. However, a cleaning device having three or more stages may be incorporated.

The multi-stage cleaning device 21 is obtained by connecting the cleaning device 23 shown in FIG. 1 in two stages. First
The stripping member 24 of the second-stage cleaning device and the stripping member 24 of the second-stage cleaning device are arranged in a comb shape, and this is shown in FIG. The positions of the grooves are set so that the ink remaining in the first stage is cleaned complementarily in the second stage.

The cleaning operation will be described. The printed erasable paper stored in the cassette 25 is inserted from the right side of FIG.
By passing through No. 1, the toner as the printing ink is peeled off and the erasable paper is cleaned.

The printing section 22 is similar to a conventionally known indirect electrophotographic copying machine. That is, first, the surface of the photoconductor 33 is charged by the charging device 30, and then an image of the document placed on the document table 27 is formed on the surface of the photoconductor 33 by the lens system 28 and is exposed for a predetermined time.
The latent image formed by the exposure is developed by the developing device 26 to form a toner image on the surface of the photoconductor 33. After the toner image is transferred to a sheet using a transfer charging device 29, the toner is thermally melted by a fixing device 32 and pressed against the sheet. On the other hand, the toner remaining on the surface of the photoconductor 33 is removed by the cleaning blade 31 to prepare for the next printing, and one cycle of the copying process is completed.

In the above, the multi-stage cleaning device 21
Has been described as an example of a printing machine provided before the electrophotographic recording system. Next, a printing machine provided with the multi-stage cleaning device 21 after the fixing device will be described.

When printing on erasable paper that has been subjected to release processing on both sides and has been printed on only one side, the unprinted side is directed to the photoreceptor 33 side, the printed side is printed downward, and the printing is performed at a later stage than the fixing device. , The old print surface can be cleaned. According to this configuration, since the heat applied during fixing can be used as preheating, electrical energy for cleaning can be saved.

In the above description, a copier is used as the printing unit 22. However, instead of forming an image on a photosensitive member, a laser beam scans the surface of the photosensitive member to form a latent image. The present invention is applied to a printer and the like. As in the case of a copier, a printer that saves paper resources can be obtained by placing a cleaning device before feeding a laser printer and supplying used eraseable paper.

Further, the printing process of the printing press according to the present invention comprises:
Since it is no different from a conventional electrophotographic copier or laser printer, plain paper and erasable paper can be mixed. In this case, when printing on plain paper, it is preferable to provide a mechanism that does not pass through the cleaning device. It is preferable to provide a mechanism for automatically recognizing plain paper and erasable paper, and passing plain paper through a bypass of a cleaning device.

Next, specific examples of the cleaning device and the printing press according to the present invention will be described. (Example 1) Using a release paper (manufactured by Lintec) as an erasable paper, a copy machine (trade name "FC-5", manufactured by Canon Inc.) was used to make a copy. It was fixed with strength that could not be removed by rubbing.

Next, an iron heat roller coated with a fluororesin is used as the non-adhesive roller, and a heat-meltable resin having a softening temperature of about 100 ° C. (trade name “Chemit Sheet KF1000”) is applied to the surface of the rubber roller as the adhesive roller.
# 80 "(manufactured by Toray Industries, Inc.), a cleaning device as shown in FIG. 1 was manufactured.

Then, the surface temperature of the non-adhesive roller is set to 110
Rotate while maintaining the temperature at ℃, insert eraser paper between the non-adhesive roller and the adhesive roller so that the toner surface contacts the adhesive roller, and send it at a speed of 5 cm / sec. Except for the part of the groove that was
The toner on the erasable paper could be removed cleanly.

(Embodiment 2) As erasable paper,
Using a release paper (manufactured by Lintec Corporation), copying was performed in the same manner as in Example 1. The fixing strength was better than that of Example 1. The same cleaning device as in Example 1 was connected in two stages, and the positions of the peeling members were shifted in a comb shape. The surface temperature of the non-adhesive roller is maintained at 130 ° C and the peripheral speed of the roller is 10
cm / sec, and erasable paper was fed between the peeling member and the non-adhesive roller.

As a result, the toner fixed on the eraseable paper was completely cleaned. Further, even if the cleaning was performed many times and the surface of the adhesive roller was covered with the toner, the cleaning performance was not deteriorated.

The embodiments described above are merely examples, and there are many embodiments embodying the present invention. For example, a multi-stage cleaning device that removes hot-melt ink on a sheet that has been subjected to a release treatment with a resin that becomes tacky by heating,
Use a non-adhesive roller as one heat roller and around it
One or more adhesive rollers may be arranged. Alternatively, a preheating method may be used instead of direct heating.

[0040]

As described above in detail, according to the cleaning device of the present invention, the printed material and the adhesive roller can be reliably separated, so that the printed material does not get caught in the adhesive roller and paper jams and paper jams occur frequently. Can be eliminated.

Further, if the cleaning device of the present invention is used, in which two or more pairs of rollers including an adhesive roller and a non-adhesive roller are provided, and the groove portions of each adhesive roller are not overlapped, the printed matter can be removed. The cleaning portion is not generated, and the entire surface can be cleaned by one operation, so that labor can be saved.

According to the printing machine of the present invention, printed paper can be reused and printed in the same procedure as a conventional copier or laser printer, and paper resources can be saved. .

Further, according to the printing machine of the present invention, in which the cleaning device is provided downstream of the heat fixing device, the time until the hot-melt ink melts can be reduced, and the cleaning speed can be reduced. And energy for cleaning and heating can be saved.

Further, by using a flexible wire as the peeling member, it is possible to prevent the printed matter from being damaged or damaged, and to improve the quality of printing on recycled paper.

[Brief description of the drawings]

1 is a schematic view of an embodiment of a cleaning device according to the present invention, FIG. 1a is a front view, and FIG. 1b is a side view.

FIG. 2 is a schematic side view of an embodiment of the printing press according to the present invention.

FIG. 3 is a plan view showing a state where a peeling member of the multi-stage cleaning device is arranged in a comb shape.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Adhesive roller 12 Heat-fusible resin 13 Non-adhesive roller 14 Peeling member 15 Groove 21 Multi-stage cleaning device 22 Printing part 23 Cleaning device 24 Peeling member 25 Cassette 26 Developing device 27 Document table 28 Lens system 29, 30 Charging device 31 Cleaning blade 32 Fixing device 33 Photoconductor

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) G03G 21/00 570-578 G03G 15/14 G03G 15/20 106

Claims (6)

(57) [Claims] 1. A printed matter printed with hot-melt ink on an erasable paper whose surface has been subjected to a release treatment,
A cleaning device for removing the hot-melt ink from the printed matter by contacting the hot-melt resin in an adhesive state by heating, wherein the adhesive roller has the hot-melt resin adhered to at least a surface thereof, and A non-adhesive roller for contacting the printed matter with a roller,
And in the circumferential groove formed on the surface of the adhesive roller,
A cleaning device in which a peeling member for separating the printed matter and the adhesive roller is inserted. 2. A printed material printed with hot-melt ink on erasable paper whose surface has been subjected to a release treatment,
A cleaning device for removing the hot-melt ink from the printed matter by contacting the hot-melt resin in an adhesive state by heating, wherein the adhesive roller and the adhesive roller having the hot-melt resin adhered to a surface thereof And two or more pairs of rollers each including a non-adhesive roller for bringing the printed matter into contact with the printed matter, and separating the printed matter and the adhesive roller from each other in circumferential grooves formed on the surface of the adhesive roller. A cleaning device in which a member is inserted, and each roller pair is arranged such that a groove portion of each adhesive roller and a flat portion of another adhesive roller overlap each other when viewed from the printed material feeding direction. 3. The cleaning device according to claim 1, wherein the peeling member is a flexible wire. 4. A printing machine in which a latent image is formed by exposing a pre-charged photoreceptor, toner is adhered to the photoreceptor, and then transferred to a printing material and heat-fixed to obtain a printed material. A cleaning device that removes the hot-melt ink from the printed material by contacting the hot-melt resin in an adhesive state by heating to a printed material printed with hot-melt ink on eraseable paper that has been subjected to There is provided a non-adhesive roller for bringing the printed matter into contact with the adhesive roller having the hot-melt resin adhered to at least the surface thereof, and a circumferential groove formed on the surface of the adhesive roller. A cleaning device in which a peeling member for separating the printed material and the adhesive roller is inserted, and the cleaning device passes the cleaning device as the print target. A printing machine characterized by using eraseable paper. 5. A printing machine in which a latent image is formed by exposing a photosensitive member charged in advance to form a latent image, a toner is adhered to the latent image, and the toner image is transferred to a printing material and heat-fixed to obtain a printed material. A cleaning device that removes the hot-melt ink from the printed material by contacting the hot-melt resin in an adhesive state by heating to a printed material printed with hot-melt ink on eraseable paper that has been subjected to There is provided a non-adhesive roller for bringing the printed matter into contact with the adhesive roller having the hot-melt resin adhered to at least the surface thereof, and a circumferential groove formed on the surface of the adhesive roller. A cleaning device in which a peeling member for separating the printed material and the adhesive roller is inserted, and wherein the cleaning is performed after the printing material is thermally fixed. Printing machine, which is sent to a printing device. 6. The printing press according to claim 4, wherein the peeling member is a flexible wire.