JPS62111262A - Production of photosensitive body and image forming method using said photosensitive body - Google Patents

Abstract

PURPOSE:To provide a filter layer which is highly resistant to wear and does not spoil conductive characteristics by providing the filter layer on a thin transparent film provided via an adhesive layer on a substrate, stripping the thin film from the substrate and adhering the thin film having the filter layer to the upper or lower side of a photosensitive layer. CONSTITUTION:The filter layer 3a is formed by using ink contg. a coloring agent having a required color and transparent resin and preferably a curable resin to be cured by heat, or light, etc., and directly printing the ink on the thin film 3b or forming the filter layer to a required pattern by a photoresist method. The thin film 3b having the filter layer is then stripped from the substrate 1 and is adhered to the surface of the photosensitive body. The filter layer is obtd. in this case simply by sticking the filter layer 3a side of the thin film to the surface of the photosensitive body on which an adhesive agent of self-adhesive agent is coated and removing the adhesive layer 2 sticking to the surface by a solvent, etc.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing an electrophotographic photoreceptor for forming a multicolor image using electrophotography, and an image forming method using the photoreceptor. Various multicolor image forming devices, color photography,
Used for printers, etc.

[Conventional technology]

Conventionally, several methods and apparatuses have been proposed for forming multicolor images using electrophotography.

For example, there is a multicolor image forming method and apparatus (the former) in which each color toner image is formed on an electrophotographic photoreceptor by image exposure and development according to each color separated light and is transferred to recording paper each time. Alternatively, for example, a device equipped with a plurality of photoreceptors corresponding to the number of separated colors is used, and each photoreceptor is exposed and developed for each color to form a toner image of each color, which is sequentially transferred to recording paper. There is a method and apparatus (the latter).

However, in the former case, the photoreceptor is rotated multiple times to form each color toner image, so it takes a long time to record the image.
There are drawbacks such as difficulty in increasing the speed. In the latter case, a plurality of photoreceptors are used in parallel, which is advantageous in terms of high speed, but the use of a plurality of photoreceptors makes the apparatus large and expensive. Furthermore, since transfer is repeated multiple times for both the former and the latter, there is a problem in that it is difficult to align the images.

The present inventors have proposed Japanese Patent Application Nos. 59-185440, 59-187044 and 5
No. 9-199547, etc., a composite filter layer in which multiple types of microscopic filters of different colors are arranged in a mosaic pattern is placed on the upper side of the photosensitive layer (the side to which toner adheres during development) or the lower side (the side on which toner adheres during development). We proposed an image forming method using a photoreceptor with a non-adhesive side). In this method, image exposure is applied through a composite filter bonded to a photoreceptor, and then the entire surface is exposed to specific light, and the area of the composite filter corresponding to the specific filter has a potential corresponding to the light transmitted through the filter. This process of forming an image, developing it using toner of a specific color, and smoothing it by recharging is repeated for each type of filter to form a multicolor image on the photoreceptor. It has the advantage of requiring only a few times and no need for alignment, making it possible to easily obtain high-quality multicolor images.

[Problems to be Solved by the Invention] Although the method of using a photoreceptor having a mosaic filter has many advantages as described above, the major problem is how to provide the filter on the photoreceptor in the following manner. Despite being relatively fragile, the surface of the photoreceptor is required to be extremely smooth and completely free of defects such as scratches.
It takes a lot of effort to construct a filter layer by adhering multiple types of coloring materials using methods such as direct printing or transfer.
It was also accompanied by many technical difficulties. In addition, the filter layer obtained in this manner also has disadvantages such as poor adhesion to the photoreceptor surface, poor abrasion resistance, and a negative effect on the photoconductive properties of the photoreceptor layer.

An object of the present invention is to provide a manufacturing method that can easily and efficiently manufacture a photoreceptor having a filter layer that has excellent abrasion resistance and does not impair conductive properties. An object of the present invention is to provide a method of forming a multicolor image using such a photoreceptor.

[Means for Solving the Problems] The above objectives include a step of providing a filter layer on a transparent thin film provided on a support via an adhesive layer, a step of peeling the thin film from the support, and a step of peeling off the thin film from the support. This was achieved by a method for producing a photoreceptor and an image forming method using the photoreceptor, which includes the step of adhering a thin film having the filter layer above or below the photosensitive layer.

The support used in the present invention is a film-like web having appropriate hardness and flexibility, such as polyethylene terephthalate, polycarbonate, polystyrene,
Various plastic films such as polyethylene and triacetate are preferably used. The thickness of these supports varies depending on the properties of the material, but is preferably about 100 μm.

An adhesive layer is provided between the support and the thin film on which the filter layer is later formed to temporarily adhere them. There are no particular limitations on the adhesive layer, and various known adhesives and pressure-sensitive adhesives can be used; however, from the viewpoint of electrical insulation and chemical inertness, silicone oil ( For example, Shin-Etsu silicone (F-96) is particularly preferably used, and silicone oil (for example, Shin-Etsu silicone KR10110) is particularly preferably used for purposes requiring adhesiveness.

The thin film may be constructed using the same plastic as the support, and its thickness is not particularly limited, but it must have enough strength to be handled as an independent film when peeled from the support. It is desirable that the thickness be within this range, and in practice, a thickness of 5 to 100 μm is preferred. Also, when the thin film is provided on the photosensitive layer, IQ + 3Ω
・It is preferable to have a specific resistance value of C11 or more,
When provided below the photosensitive layer, no particular limitation is required.

The support and/or the thin film may be treated with Teflon coating or the like in order to adjust the releasability from the adhesive layer. In other words, if the adhesiveness between the thin film and the adhesive layer is made higher than the adhesiveness between the adhesive layer and the support, the adhesive layer will adhere to the thin film side and be peeled off during peeling, and if the adhesive strength relationship is reversed, the adhesive layer will peel off. A thin film that remains on the support side and has no adhesive layer is obtained.

FIG. 1 is a diagram schematically showing a cross section of a support having a thin film as described above, in which reference numeral 1 indicates a support 2 as an adhesive layer, and 3b indicates a thin film.

In the method of the present invention, a filter layer is provided on the thin film surface provided on the support. The filter layer can be provided by printing directly on the surface of the thin film using an ink containing a coloring agent having the desired color and a transparent resin, preferably a curable resin that is cured by heat or light, or by using a photoresist technique. A preferred method is to form a filter layer with a desired pattern using
In addition, various methods can be used, such as a method of thermally transferring a tube colorant.

When forming a filter layer by printing or photoresist techniques, the ink can be used as a binder resin and post-treated with heat or photo-curable acrylic resin, silicone resin, polyamide resin, melamine resin, isocyanate resin, cinnamic acid resin, etc. It is preferably made insoluble in solvents, and is formed by containing 70% by weight or more of a resin and less than 30% by weight, preferably 2% by weight or more of an organic dye or pigment soluble in an organic solvent as a coloring agent. It is preferable to do so.As such colorants, for blue filters, for example, organic dyes and pigments such as copper phthalocyanine, methylene blue, cyanine blue, Victoria blue, etc. are used.For green filters, for example, brilliant green, malachite green, etc. are used. Organic dyes and pigments such as naphthol green, Tsukushin, for red filters,
Organic dyes and pigments such as phenosafranin and rhodamine B1 naphtholred are used. Furthermore, a plasticizer to improve the processability of the filter layer, and an ultraviolet absorber such as Tinuvin (trade name, manufactured by Ciba Corporation) to prevent the colorant from fading due to ultraviolet rays may be added.

To form a filter layer on the thin film described in Section 11, an ink prepared by dissolving the above coloring agent and curable binder resin in an organic solvent such as toluene, benzene, ethyl acetate, methyl ethyl ketone, acetone, etc. is used to form an offset or graphite layer. °via,
A filter is provided using a printing technique such as screen, silk, or letterpress or a photoresist technique, and is cured by light or heat.] The process is performed sequentially to form a linear or mosaic shape. By repeating this process, the next filter section can be installed without destroying the previous filter section with solvent or mechanical force, and the required composite filter layer can be created by repeating the operation for the type of filter required. can be completed. Filter layer thickness is usually 1~IO
From the viewpoint of transmittance characteristics, it is preferable to form the layer with a thickness of .mu.m.

The thickness of the thin film containing the composite filter layer obtained as described above is 5 to 10'0 μl, preferably 10 to 50 μl.
It is.

It is also preferable to further provide a transparent protective layer made of resin or the like on the resulting composite filter layer. By doing so, the filter layer can be protected from abrasion, scratches, dirt, etc. during use.

FIG. 2A is a cross-sectional view of the web consisting of the support 11, adhesive layer 2, and thin film 3b after the composite filter layer has been printed, where 3a is the filter layer, R, G, and B are red, respectively. Showing green and blue filters. In FIG. 2B, a protective layer 3c is further applied on the filter layer.

The shape and arrangement of the color separation filters constituting the above-mentioned composite filter are not particularly limited, but may be linear as shown in FIG. It is possible to use a parallel one or a parallel one.

However, normally a mosaic structure as shown in Figures 3B and 3C is used, and the size of each filter is 30 to 5 as the color repetition width (721.12. in Figure 2).
It is preferable to set it to 00 μm. If the filter size is too small, it will be easily influenced by other adjacent color areas,
Further, if the width of one filter is equal to or smaller than the particle size of the toner particles, it becomes difficult to manufacture the filter. Furthermore, if the size of the filter becomes too large, the resolution and color mixing properties of the image will decrease, resulting in deterioration of the image quality. Incidentally, each of FIGS. 2A to 2B and 38th A to C shows a case in which so-called three-color separation filters of red, green, and blue are provided. In the figure, R indicates a red filter, G indicates a green filter, and B indicates a blue filter, but the coloring of the composite filter layer according to the present invention is not limited to these three colors, and any color of the filter layer may be used as necessary. can be formed.

The photoreceptor according to the present invention has a photoconductive photosensitive layer provided on a conductive substrate, and the photosensitive layer is made of sulfur, selenium, amorphous silicon, or an alloy of these with tellurium, arsenic, antimony, etc. photoconductor, or zinc, aluminum,
It is formed by vapor depositing an inorganic photoconductor of metal oxides, iodides, sulfides, and selenides such as acetimone, bismuth, cadmium, and molybdenum, or by dispersing and coating them in a binder resin.

Further, organic photoconductors such as vinylcarbazole, anthracenephthalocyanine, trinitrofluorenone, polyvinylcarbazole, polyvinylanthracene, polyvinylpyrene, polycyclic quinone dye, bisazo dye, etc. are similarly vapor-deposited or resin-dispersed and then coated. Such binder resins include insulating and translucent resins such as polyethylene, polyester, polypropylene, polystyrene, polyvinyl chloride, polyvinyl acetate, polycarbonate, acrylic resin, silicone resin, fluorine resin, and epoxy resin. . A functionally separated photoconductor having a charge generation layer and a charge transfer layer is also used. The conductive substrate is usually a metal such as aluminum, iron, nickel, copper, an alloy thereof, or a thin layer of these metals provided on a polyester terephthalate film, etc. by a method such as lamination or vapor deposition. Various known substrates used in electrophotographic photoreceptors can be used.

The shape of the photoreceptor is not particularly limited, and any suitable shape or structure may be created as required, such as a drum shape, an endless belt shape, or a sheet shape.

Next, the thin film having the filter layer is peeled off from the support and adhered to the surface of the photoreceptor 1. The thin film may be adhered in the direction in which the filter layer side is adhered to the photoreceptor surface, or the thin film may be adhered on the back side of the thin film, that is, before peeling. The layer side may be adhered to the photoreceptor surface. As for the adhesion method, if the adhesive layer remains on the support side when it is peeled off, the adhesive or pressure-sensitive adhesive can be applied or sprayed on the surface of the photoreceptor or on the thin film side to make it adhere uniformly, and then peeled off. If the adhesive layer adheres to the thin film side and peels off during peeling, the adhesive layer side of the peeled thin film can be applied directly to the surface of the photoreceptor. good. If the filter layer side of the thin film that has been peeled off with the adhesive layer still attached is to be attached to the photoconductor surface, the filter layer side of the thin film should be attached to the photoconductor surface that has been coated with an adhesive or adhesive, and then The remaining adhesive layer may be removed using a solvent or the like.

Adhesives for attaching the thin film to the photoreceptor include a support,
The same materials as those used for the adhesive layer provided on the thin film can be used. Adhesion can be improved by applying external heat or pressure to attach the thin film to the photoreceptor.

FIG. 4 is a diagram schematically showing a cross section of the photoreceptor produced as described above, in which a photosensitive layer 12 is provided on the conductive member 11 J: and a photoreceptor layer 12 is provided thereon. Required fine color separation filters (light (R), green (G) in the figure)
), a composite filter layer 3a consisting of a blue (B) color separation filter) group and a layer 3 consisting of a thin film 3b are bonded, 2
．． Reference numeral 13 denotes an adhesive layer that adheres the thin film having the filter layer to the surface of the photoreceptor.

Fig. 4A shows an example in which the thin film 3b side is adhered to the photoreceptor surface, Fig. 4B shows an example in which a protective layer 3c is provided on the filter layer in advance, but the thin film side is adhered to the photoreceptor surface, and Fig. 4C shows the filter layer. The fourth diagram shows an example in which the filter layer side of a layer consisting of a layer 3a and a thin film 3b is adhered to the photoreceptor surface, and the fourth diagram is a photoreceptor in which a protective layer 3c is previously formed on the filter layer 3a, but the protective layer 3c side is adhered to the photoreceptor surface. This is an example.

The above-mentioned conductive member I may be made of metals such as aluminum, iron, nickel, copper, or alloys thereof, and may have an appropriate shape and structure as necessary, such as a cylindrical shape or an endless belt shape.

The present invention can also be used in the production of photoreceptors in which a filter layer is provided below the photosensitive layer.

The image forming method using this photoreceptor is disclosed in the patent application filed in 1987-1999.
No. 547, a photoreceptor having a photosensitive layer and a transparent conductive member on a transparent insulator is used, secondary and secondary charging is performed from the photosensitive layer, and image exposure and full-surface exposure with specific light are performed. The feature is that this is done from the filter side on the back side. Figure 4 E and F are examples of this type of photoreceptor;
Figure E shows the thin film side of the layer consisting of the thin film 3b and filter layer 3a adhered to the transparent conductive member 14, and Figure 4F shows the filter layer side adhered to the surface of the transparent conductive member 14.

15 is a transparent insulating layer. In this case, as the transparent conductive member, one in which a conductive film such as tin oxide is formed on a film by vapor deposition or sputtering is preferably used.

A process for forming a multicolor image using a photoreceptor according to the present invention will be described by way of example. First, the entire surface is charged with a primary charge, and then
Next, charging and simultaneous image exposure are performed to form a primary latent image corresponding to the color separation image density on the photosensitive layer below each filter. Then, by subjecting the entire surface to specific light, in this case light transmitted through the first color separation filter, only the photosensitive layer below the filter is exposed to a surface potential that corresponds to the intensity of the second latent image, i.e. A secondary latent image having a potential pattern is formed. This secondary latent image is developed with toner having a complementary color to that of the filter. Thereafter, the process of recharging to smooth the surface potential, full exposure to specific light to form a potential pattern in the next decomposition filter section, and development with a toner having a complementary color relationship to that of the filter is repeated to expose the surface to light. body"
Second, a multicolor image is formed. This multicolor image is superimposed and transferred onto the recording paper, H, by only one transfer.

Next, P1-1J of multicolor image formation using the photoreceptor of the present invention.
$ ”71- + hfu-name1+11-J-1jirali
&11-) CI 1 rlv7+[8] is a part of a photoreceptor using an n-type semiconductor such as cadmium sulfide as a photosensitive layer, and the image forming process therein is schematically expressed. In the figure, 11 and 12 are a conductive member and a photosensitive layer, respectively, as in Fig. 4, and 3 includes 1) a high-resistance three-color (I3.G, R) composite filter, a thin film, and a protective layer as shown in η. (FIG. 4) In order to simplify the drawing, only the filter layer is shown and other layers are omitted. Further, the graphs at the bottom of each figure in FIG. 5 show the potentials on the surface of each part of the photoreceptor.

First, a positive charge is generated on the surface of the layer 3 containing the composite filter, which generates a positive corona discharge over the entire surface by the charger 4, and a corresponding negative charge is induced on the interface between the photosensitive layer 2 and the layer 3 containing the filter. This results in the state shown in FIG. 5 [1].

Next, alternating current or negative discharge is applied by a charger 5 equipped with an exposure slit to erase the charge on the surface of the composite filter 3 while exposing the image from the multicolor original.

In the photoreceptor of the present invention, image formation is performed by performing multicolor image exposure of red, green, and blue as described in 1) η, but for the sake of clarity, image formation is performed using an original having only a red image as an example. Explain the process.

FIG. 5 [2] shows the state of the portion subjected to image exposure (arrow Lr) from the red image. The red light Lr passes through the red color separation filter part 3R of the layer 3 and makes the photosensitive layer 2 below it conductive, so that most of the positive charges on the layer 3 are erased and induced in the photosensitive layer 2. The negative charges generated are also erased, and the surface potential becomes close to zero potential.

On the other hand, the green and blue separation filter section 3G.

3B does not transmit red light Lr, so some of the positive charges on layer 3 are erased, but the negative charges in photosensitive layer 2 remain as they are, and correspond to the partially erased positive charges. A charge is induced in the conductive member l. In such a charge arrangement, the surface potential on the green and blue separation filter sections 3G and 3B becomes close to zero potential. However, the charger 5 may be used as a scorotron charger to reverse the polarity by controlling the grid voltage so as to provide a uniform surface potential of, for example, -200V. Therefore, although the composite filter has an inherent charge pattern as a primary latent image, a toner image cannot be formed because no surface potential difference occurs. Next, the entire surface is exposed to specific light that produces a potential pattern only in one type of decomposition filter of the composite filter 3, for example, blue light (arrow LB) obtained by the light source 6 and the blue filter FB. In this case, blue light L B
A part of the negative charge on the photosensitive layer 2 at the bottom of the decomposition filter 3B and the positive charge on the conductive member l are neutralized, and the resultant light is transmitted through the decomposition filter 3B.
], a layer 3 corresponding to the part of the decomposition filter 3B,
Positive and negative charges remain between the photosensitive layer 2 and the composite filter 3.
A positive surface potential is applied to the top. By developing this with a developing device 7 carrying negative yellow toner Ty as shown in FIG. 5 [4], a partial yellow toner image of the separation filter 3B is formed. In the area of the separation filter 3B where this yellow toner image was formed, the surface potential remains unsaturated by the toner, so as shown in the lower graph, a relatively high surface potential remains, and the next step is to There is still room for another toner to adhere during the development process.

Therefore, the surface of the layer 3 is recharged with alternating current or negative direct current, preferably with a negative corona discharge by a scorotron charger 8, to restore the state of flat surface potential as shown in the lower graph of FIG. 5 [5]. It is preferable to make the surface potential equal to that shown in FIG. 5 [2].

Next, the entire surface is exposed to green light (arrow LG) obtained by the light source 6 and the green filter FC, as shown in FIG.
6], the negative charges in the photosensitive layer 2 and the positive charges in the conductive member 1 are neutralized, and a high surface potential in the lower graph is obtained in the region 3G of the layer 3. By developing this with the developing device 9 carrying the magenta toner TM shown in FIG. 5 [7], a magenta toner image is obtained in the 3G area. Next, after recharging (FIG. 5 [8]), the entire surface is exposed to red light obtained by the red filter PR, but at this time no potential pattern is generated and development with cyan toner TC is not performed. When the yellow toner image and magenta toner image are thus transferred and fixed onto the recording paper, a red image in which yellow and magenta are visually observed is visually observed on the recording paper.

The above explanation is based on the case where the original is a red image, but the same applies to cases where the original is a white, green, blue, yellow, magenta, cyan, or black image. Color reproduction is performed by the combination. FIG. 6 is a diagram illustrating the process of color reproduction when such originals of each color are used. In FIG. 6, the horizontal axis represents the color tone of the original, and the vertical axis represents the process at each stage leading to toner image formation when each color original is used.

It represents the process of Further, the symbol "↓" indicates that the state of the upper shelf is maintained as it is, and the blank space indicates a portion where no latent image is formed.

In the above description, an n-type semiconductor is used as the photoreceptor, but a photoreceptor using a p-type semiconductor such as selenium may also be used. There is no change. Of course, as long as the photoreceptor can be used as an n-type or a p-type, either type may be used.

As is clear from the above description, the photoreceptor according to the present invention is
It is a photoreceptor with an insulating composite filter provided on the photosensitive layer.
Furthermore, as an image forming method using the photoreceptor, a primary latent image is formed by only one image exposure, and then the entire surface is exposed by a three-color separation method, and each color is divided into color separation filters constituting a composite filter. A multicolor image is obtained by repeating the steps of forming a secondary latent image, developing it with toner of a corresponding color, and recharging.

As mentioned above, the so-called method utilizes charges induced in the photosensitive layer.
Although the NP method is used, when a secondary latent image is formed by the second and subsequent full-surface exposures, recharging is required in order to eliminate the adverse effects caused by the residual latent image from the first exposure. This recharging is effected by an alternating current or negative direct current discharge, preferably by a negative corona discharge with a scorotron charger. In addition,
"Charging" as used in the method of the present invention includes cases where the surface potential obtained when charging becomes 0 or the surface charge disappears.

The present invention also provides -order charging, secondary charging with a polarity substantially opposite to the -order charge, recharging for smoothing the potential pattern after image exposure, full-surface exposure with specific light, and specific color toner. It can also be applied to an image forming method in which development is repeated.

The development in the present invention is preferably carried out by a magnetic brush method, and the developer may be either a so-called l-component developer using non-magnetic toner or magnetic toner, or a so-called two-component developer containing a mixture of toner and a magnetic carrier such as iron powder. can be used. For development, a method of directly rubbing with a magnetic brush may be used, but in order to avoid damage to the formed toner image, especially after the second development, a developing method in which the developer layer does not come into contact with the photoreceptor surface is recommended. The gap between the developing sleeve and the photoreceptor is set larger than the thickness of the developer layer on the sleeve (
However, if there is no potential difference between the two,
For example, U.S. Patent No. 3,893,418, JP-A-5
Publication No. 5-18656, Japanese Patent Application No. 58-57446, Japanese Patent Application No. 58-238295, Japanese Patent Application No. 58-238
It is particularly preferred to use methods such as those described in the specifications of No. 296. In this method, a one-component developer consisting of only non-magnetic toner and a two-component developer containing non-magnetic toner are used, and an alternating electric field is formed in the development area, and the electrostatic image support and the developer are Preferably, the development is carried out without contacting the layers. However, a developer using magnetic toner may be used.

The color toner used for development is made by known technology and consists of known binding resins, organic and inorganic pigments, various chromatic colors such as dyes, and various additives such as charge control agents that are normally used in toners. A toner for developing electrostatic images can be used, and the carrier may be iron powder or ferrite powder, which are usually used for electrostatic images, more preferably iron powder or ferrite coated with a resin, or a magnetic material in the resin. Various known carriers can be used, such as dispersed high-resistance magnetic carriers.

In addition, the applicant filed the patent application No. 58-24966 earlier.
The developing method described in the specification of No. 9, 5g-240066 this winter may be used.

[Examples] The present invention will be specifically explained below with reference to Examples, but the embodiments of the present invention are not limited thereto.

(Creation of photoreceptor [!]) A 20 μm thick polyethylene terephthalate thin film was releasably adhered to a 100 μm thick Teflon coated polyester film using silicone varnish KRIOI-10 (manufactured by Shin-Etsu Silicone Co., Ltd.) as an adhesive layer. The first
Prepare a web as shown in the figure, and mark [Table] F on its surface.
The third layer was printed by screen printing using an ink with the composition shown in
B, G, R of the pattern in Figure H.

A three-color composite filter layer was printed to obtain a laminated web having the structure shown in FIG. 2A. When this laminate is peeled off, the adhesive layer adheres to the thin film and peels off.

In addition, a separate aluminum laminate film is used as the base,
A film-like photoreceptor provided with a cadmium sulfide resin photosensitive layer having a thickness of 45 μm was prepared. The photosensitive layer contains 100 parts by weight of cadmium sulfide and 4 parts by weight of thermosetting silicone-modified acrylic resin.
It was formed by applying a photosensitive solution containing 0 parts by weight and 100 mQ of toluene, and a sealing layer of about 0.5 μm was further provided on the surface.

Using the apparatus shown in FIG. 7, the thin film having the filter layer was peeled from the laminated web and laminated onto the photoreceptor surface of the photoreceptor to obtain a photoreceptor 1 having a composite filter having the structure shown in FIG. 4A. In FIG. 7, 21 is a part for unwinding the laminated web having a filter layer, 22 is a part for winding up the support after peeling, 23 is a part for unwinding the film-like photoreceptor, and 25 is a pair of laminating rollers. Each web is conveyed in the direction of the arrow. The thin film having the composite filter layer on the laminated web is peeled off from the support by a reversing roller 26, pressed onto the photoreceptor surface conveyed by a pair of laminating rollers 25, and adhered to the photoreceptor surface by the adhesive layer adhering to the thin film. The completed photoreceptor is wound onto a winder 1124.

There was no loss due to deformation of the filter layer, and a photoreceptor having a composite filter layer with an accurate shape could be manufactured with high efficiency. The obtained photoreceptor [1] is shown in Figure 4A.
It has the structure of

(Creation of photoreceptor [2]) It has a structure similar to the case described in 11η, but the release treatment is applied to the thin film side, and the release treatment is stopped on the support side, so that the adhesive layer does not touch the support during peeling. A laminated web was created by printing a composite filter layer on the web 1-, which was left on the web 1-, in the same manner as described above. As the photoreceptor, the same film-like photoreceptor as that used for surface photoreceptor 1 was used. The thin film having the filter layer is peeled off from the laminated web using the apparatus shown in FIG. 8 and adhered to the photoreceptor surface coated with an adhesive. A photoreceptor with a structure was created. In Figure 8,
Reference numeral 31 designates an unwinding part for the laminated web, 32 a winding part for winding up the support after the thin film has been peeled off, 33 a winding part for the film-like photoreceptor, and 34 a winding part for the completed photoreceptor. 35 is a vat containing an adhesive 36, and the adhesive 36 is applied to the surface of the photoreceptor as it is being unwound by an application roller 37. The amount of adhesive applied is Doctor 3
8. The filter layer surface of the laminated web is pressed against the adhesive-coated photoreceptor surface by a laminating roller 39, and the thin film having the filter layer is peeled off from the laminated web and adhered to the photoreceptor surface, resulting in a completed film-like photoreceptor. The body is wound up on the winding section 34. The support with the adhesive layer from which the thin film has been peeled off is wound up on a winding roller 32.

The resulting photoreceptor [2 has the structure shown in FIG. 4C, and since the filter layer is protected by a thin film,
It has strong advantages against wear and scratches during use. The production of photoconductor 2 is highly efficient and stable, similar to the case of photoconductor I.
No malfunctions such as distortion of the filter layer or poor adhesion were observed in the resulting photoreceptor.

(Image Formation Using Photoreceptor [1]) FIG. 9 is a sectional view of a main part of a multicolor image forming apparatus for copying a multicolor image using the photoreceptor [1]. SD
4 is a photosensitive drum in which the film-like photoreceptor [1] 40 is mounted on a metal drum; 41 is a positive direct current primary charger;
2 is a negative DC corona discharge scorotron charger having a slit for image exposure; 43B is a light source having an n-color filter FB and emitting blue light LB; and 44Y is a developing device containing yellow toner. 45 is a scorotron charger for negative direct current corona discharge, 46G is a light source having a green filter PC and emits green light LG, 47M is a developing device containing magenta toner, 48 is a scorotron charger for negative direct current corona discharge, 49R has a red filter F'R and red light L
A light source for irradiating R, and 50 a developing device containing cyan toner. P is a recording paper, 51 is a transfer electrode, 52 is a separation electrode, 53 is a static eliminator for removing residual charges that removes static electricity while exposing the back of the electrode to white light, and 54 is a cleaning blade for removing residual toner.

The photoreceptor 40 having the above structure is first uniformly positively charged by the charger 41, and then the AC charger 42 is activated, and at the same time, image exposure from the original of the three primary colors of blue, green, and red is scanned and exposed. A primary latent image corresponding to the intensity of image exposure from the original is formed on the photoreceptor 40 for each color separation filter of the composite filter. Next, a white light source 43 equipped with a blue filter FB
The entire surface is exposed with B, and an electrostatic charge image corresponding to the second-order latent image is formed in the region of the blue separation filter, and this is yellow-developed with a yellow developer 444Y.

Next, the entire surface is exposed LG by a white light source 46G equipped with a trailing edge color filter PC in which the electrostatic charge image remaining in the area of the blue separation filter is erased by a negative scorotron charger 45, and magenta is developed by a magenta developer 47M. .

Next, after erasing the remaining electrostatic image with a negative scorotron charger 48, a white light source 49 equipped with a red filter PR
The entire surface is exposed L to R using R, and cyan is developed using a cyan developer 50. In this way, a multicolor toner image corresponding to the original is formed on the photoconductor, and after being transferred to the recording paper P fed at the same timing by the action of the transfer electrode 51 and separated by the action of the separation electrode 52. The image is fixed by a fixing device (not shown).

On the other hand, after the photoreceptor 10 has been transferred, the static electricity is removed by the static eliminator 53, and then the remaining toner is removed by the cleaning blade 54.
? The image is then cleaned and prepared for the next image formation.

All of the above explanations have been made regarding embodiments of a color copying machine using so-called three-color separation filters and three primary color toners, but the embodiments of the present invention are not limited to this.
It can be widely used in various multicolor image recording devices, color photo printers, etc.

It goes without saying that the combination of the color of the separation filter and the color of the toner corresponding thereto can be arbitrarily selected depending on the purpose.

When copying a multicolor original using this device, we were able to obtain a beautiful copy with no misalignment or color blurring.
] The same copying test was repeated with the photoreceptor [
1], excellent copies could be obtained.

Furthermore, in the above explanation, the spectral characteristics of light for full-surface exposure are blue (B
), green (G), and red (R) filters, but may also be obtained by means other than filters.
Further, the spectral characteristics are limited to G, B, and H, and may be such that a potential pattern is formed only in a specific filter portion corresponding to a specific light on the photoreceptor. Therefore, "multiple types of filters" as used in the present invention refers to m types of color separation filters (filters that transmit light only in a specific wavelength range) and areas without filters (which may be transparent resin or the atmosphere). The photoreceptor may have a layer of The portion without this filter is regarded as a transparent filter, and is included in the above-mentioned "multiple types of filters".

〔Effect of the invention〕

As is clear from the above description, a photoreceptor having a composite filter with excellent wear resistance, moisture resistance, adhesiveness, electrical properties, etc. can be easily and highly efficiently manufactured by the photoreceptor manufacturing method of the present invention. I can do it.

The obtained photoreceptor is free from adverse effects such as filter deterioration, deformation, and color bleeding, and can be made into a stable multicolor image-forming photoreceptor that can withstand long-term use. Furthermore, when an image is formed using such a photoreceptor, only one extremely high-quality multicolor image can be produced.
Re-imaged by multiple image exposures.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a support according to the present invention, and FIGS. 2A and 2B are sectional views of a laminate having a composite filter. Fig. 3 is an arrangement diagram of a composite color separation filter, Figs. 4 A to F are cross-sectional views of a photoreceptor according to the present invention, Fig. 5 is a diagram explaining the process of forming an image from a red original, and Fig. 6 is a diagram showing various types of coloring. Figures 7 and 8 are diagrams illustrating the process of forming an image from a document; Figures 7 and 8 are diagrams showing the process of adhering the filter layer to the photoconductor; and Figure 9 is a diagram showing the main points of a multicolor image forming apparatus using the photoconductor of the present invention. FIG. Applicant: Roku Konishi Photo Industry Co., Ltd. Figure 1 Figure 2 Figure 3 Human → Figure 5 1--;: Shi-

Claims (6)

[Claims] (1) In a method for manufacturing a photoreceptor having a filter layer above or below a photosensitive layer, a step of providing a filter layer on a transparent thin film provided on a support via an adhesive layer, and peeling off the thin film from the support. A method for manufacturing a photoreceptor, comprising the steps of: and adhering a thin film having the peeled filter layer above or below the photosensitive layer. (2) When the thin film is peeled from the support, an adhesive layer is peeled off together with the thin film, and the thin film is adhered to the upper side or the lower side of the photosensitive layer by the adhesive layer. A method for manufacturing a photoreceptor. (3) When the thin film is peeled off from the support, the adhesive layer remains on the support, and the surface of the peeled thin film on which the filter layer is attached or the opposite side thereof is adhered to the upper or lower side of the photosensitive layer using a separate adhesive means. A method for manufacturing a photoreceptor according to claim 1, characterized in that: (4) The method for manufacturing a photoreceptor according to claim 1, wherein the filter layer is a composite filter layer having a plurality of types of microfilter portions of different colors. (5) A step of providing a filter layer on a transparent thin film provided on a support via an adhesive layer, a step of peeling off the thin film from the support, and a step of placing the peeled thin film with the filter layer on top of the photosensitive layer. Alternatively, a photoreceptor manufactured by a manufacturing method including a step of adhering to the lower side is subjected to image exposure and uniform exposure with specific light to form a potential pattern on each corresponding filter portion. An image forming method comprising the step of repeating a process of developing with toner. (6) By repeating the process of uniformly exposing the specific light to form a potential pattern on each corresponding filter portion and developing this with toner, the same number of filters as the types of filters are formed on the photoreceptor. 6. The image forming method according to claim 5, wherein color toner images are formed by superimposing them.