JPS6395461A - Electrophotographic sensitive body and image forming method - Google Patents

Abstract

PURPOSE:To obtain an electrophotographic sensitive body having fine color filters applicable to almost all dyes by forming a photoresist pattern using a photoresist soluble in aliphatic hydrocarbons. CONSTITUTION:An inorganic film 3 is formed on a dye film 2, and on this film 3 the photoresist film 4 is formed using the photoresist dissolved in the aliphatic hydrocarbon solvent, for example, by the coating process using a spinner or the like. This is exposed to ultraviolet rays, far ultraviolet rays, X-rays, electron beams, or the like through a prescribed mask, the unexposed parts of the uppermost layer is selectively dissolved with a developing solution to form the resist pattern 4'. Then, a substrate 1 is set in a dry etching device, the dye layer 2 is selectively etched by the dry etching method using a gas composed essentially of oxygen, or the like method, and the disclosed dye film 2 is removed, thus permitting the obtained electrophotographic sensitive body to have the fine color filters formed on a photosensitive layer or a transparent support to be obtained.

Description

Detailed Description of the Invention [Industrial Application Field 1] The present invention relates to an electrophotographic photoreceptor for forming multicolor images using electrophotography and an image forming method using the photoreceptor, and Used in color image forming devices, color photographs, printers, etc.

[Prior Art 1] 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 (Li?J) that performs image exposure and development according to each color separated light on an electrophotographic photoreceptor and transfers each color toner image to recording paper each time it is formed. . For example, using a device equipped with a plurality of photoreceptors corresponding to the number of separated colors, image exposure and development of each color is performed on each of the photoreceptors to form a toner image of each color, which is sequentially transferred to recording paper. There are methods and installations (ra<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, since multiple photoreceptors are used in parallel, it is advantageous in terms of high speed, but it has drawbacks such as the large size and high cost of the r-coating device that uses a plurality of photoreceptors. 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 improvements to these defects in Japanese Patent Application Laid-open No. 61-63856, No. 61-65262, and Japanese Patent Application No. 5
9-199547, etc., a fine color filter layer in which multiple types of fine filters of different colors are arranged in a mosaic pattern is placed above the photosensitive layer (the side to which toner adheres during development) or below the photosensitive layer (the side to which toner adheres during development). We proposed an image forming method using a photoreceptor on the side to which toner does not adhere. This method applies image exposure through a fine color filter bonded to the photoreceptor, then exposes the entire surface to specific light, and the portion of the fine color filter that corresponds to the specific filter corresponds to the light transmitted through the filter. This process of forming a potential A↑, developing it using a specific color toner, and smoothing it by recharging is repeated for the 81 types of filters to form a multicolor image on the photoreceptor. It has the advantages of requiring only one exposure and no need for 111 alignments.
Easy and high quality multicolor images can be obtained.

Regarding the manufacturing method of these fine color filters, etc.,
A method of forming a dye-deposited RV film by vacuum evaporation has been proposed, for example, in JP-A-55-146406. In this method, the colored layer is formed from the dye itself, and the mordant layer in the dyeing method is not required, so the film can be made extremely thin and the dye layer can be formed by a non-aqueous process.

Dry etching has conventionally been used to pattern the T& dye J1 formed by vapor deposition. This involves forming a resist mask pattern on the dye layer, and then using this as an etching mask, the non-resist portions of the dye layer are removed by evaporation in an ion or plasma atmosphere to form a fine color filter in the desired shape. It is something.

However, this method has problems in that it is not easy to select a resist with good dry etching properties, and the resist mask remains on the filter, making the Vt formation complicated.

On the other hand, in contrast to the above method, a dissolvable negative pattern is formed on the substrate, followed by a dye layer, and then a dissolvable negative pattern is formed on the upper layer by dissolving and removing the dissolvable negative pattern. A so-called reverse etching method (or 7-to-7 method) in which an unnecessary dye layer is simultaneously removed is known, for example, from Japanese Patent Publication No. 16815/1983.

According to this reverse etching method, a colored pattern of a desired shape is obtained by dissolving the underlying resist pattern.

[Problem to be Solved by the Invention 1] However, this method of forming a fine color separation filter using reverse etching is rarely adopted.The reason for this is that the resist pattern cannot be dissolved and removed without damaging the dye layer. This is because it is difficult.

In other words, it is extremely difficult to select the pattern forming material used for pattern formation, and the conventionally known BON type resist requires strong dissolving power due to the strong resin component required for use as an etching mask. When reverse etching is performed using such a resist, the dye layer may be dissolved or not even dissolved during the development and removal of the resist. However, cracking and clouding often occur, and -111s dissolves, impairing the spectral characteristics, and even if successful, the problem is that it can only be applied to extremely limited dyes.

The inventors of the present invention provide an electrophotographic photoreceptor having a fine color filter manufactured in a specific manner. I found out what I can do.

The purpose of the present invention is to solve the disadvantages of the reverse etching method of vapor-deposited dye films using BON-type photoresists, namely, because only a very limited number of dyes can be used, it is difficult to obtain desired spectral characteristics, and at the same time, it is difficult to obtain desired spectral characteristics. It is an object of the present invention to provide an electrophotographic photoreceptor having a fine color filter that can be applied to almost all dyes by eliminating the drawback that it is difficult to form a fine color filter.

Another object of the present invention is to provide an image forming method for forming a multicolor image using an electrophotographic photoreceptor having the fine color filter.

1 Means for Solving Problem 1 The object of the present invention is to form a film made of an M material that can be removed after film formation and a resin film that can be dissolved in aliphatic hydrocarbons on a substrate, respectively. Formed by applying imagewise exposure to the surface of the top layer of these films, removing the resin film according to the exposure pattern using an aliphatic hydrocarbon developer, and removing the inorganic film. By using the exposed exposure pattern, f! By removing the exposed dye film of the I1 layer or applying a dye film to the exposed pattern area of the exposed substrate, a fine color filter with a dye film of the desired shape is placed on the photosensitive layer or transparent support. This was achieved using the electrophotographic photoreceptor provided. More specifically, there is a step of pre-forming a dye film on a photosensitive layer or a transparent support on a substrate, and a film made of an inorganic substance or a resin film dissolved in aliphatic hydrocarbons is formed on the dye film. A process of coating one side first to form a stacked film, a process of removing the unexposed part of this uppermost layer using an aliphatic hydrocarbon developer to form an exposed pattern, and a process of forming an exposed pattern by applying this pattern. This is an electrophotographic photoreceptor provided with a mosaic-like fine color filter formed by repeating the steps of transferring the dye to the lower layer film and finally removing the dye film on the substrate. On the other hand, without forming a dye film on the substrate, a resin film soluble in aliphatic hydrocarbons is formed directly on the substrate, a film made of an inorganic substance is formed, and a photoresist film is further formed on this. The photoresist film is exposed to light using an electron beam or the like through an exposure mask to form an exposure pattern. The pattern can then be transferred to an underlying film to expose the substrate, and a fine color filter can be applied to a photosensitive layer or transparent support by exposing the substrate and forming a dye film on the exposed area. This is an electrophotographic photoreceptor formed on the top.

tAg on the board! A process of forming a film made of an inorganic material that can be removed afterward and a film of fl(rrfi) that can be dissolved in aliphatic hydrocarbons, and imagewise exposure to the surface of the top layer of these films, The exposure pattern formed by the process of removing the resin film and inorganic film according to the exposure pattern using a hydrocarbon developing solution removes the exposed dye film that has been laminated in advance on the substrate, or ) By applying a pigment film to the t-pattern part, a fine color filter with a pigment film of the desired shape is exposed to light.
Alternatively, using an electrophotographic photoreceptor on a transparent support, the photoreceptor is charged, imagewise exposed, and then exposed to specific light over the entire surface and a plurality of development steps are repeated to achieve 1ifi.
This is an image forming method for forming a photoreceptor multicolor image.

In the electrophotographic photoreceptor according to the present invention, the mosaic-like fine color filter layer is constructed by laminating a film made of an inorganic substance on a dye film and a resin film dissolved in aliphatic hydrocarbons, so that the image It is excellent for creating relief images after multiple exposures, and the fine color filter created by repeating it multiple times
Since it is strongly formed, a color image with good color reproducibility can be obtained by a multicolor image forming method using the electrophotographic photoreceptor. Moreover, it is an electrophotographic photoreceptor that can be applied to all dyes.

The pigment film can be formed by various methods, but
Advantageously, it is formed by vapor deposition of a dye. In the case of vapor deposition, a mordant layer is not required, so an extremely thin vAm color filter can be formed.

Regarding the structure of the fine color filter used in the present invention, an embodiment shown in the drawings will be described. As shown in FIG. 1A, an inorganic film 3 is formed on a dye film 2. For example, 5i02ySiJ is used as a material for forming the t% silicon film.
41Ti02+Ce0z+ZnSIMHO1^1zO,
, SnO□.

TazOs, PbFz, Si, Ti, Mo, W, Cr,
Examples include CrzOl, GaAs, and ^1. Appropriate methods for forming thin films using these inorganic materials include thermal evaporation, sputter evaporation, electron beam evaporation, and CVD (chemical vapor deposition) methods.

Next, as shown in FIG.
is formed by a coating means such as a spinner.

The aliphatic hydrocarbons used in the present invention include CnH,
It is appropriate to use the general formula n→x (an integer of n≧5, x=−2t0,2). Specific examples include pentane, cyclopentane, pentene, pentyne, hexane, cyclohexane, hexene, hexyne, heptane, cycloheptane, heptene, heptyne, octane, /nan, cyclononane, /nene, nonine, decane, cyclodecane. , decene, denone, untecan, cycloundecane, undecene, undecine, dodecane, schifmidodecane, dodecene, dobuscine, and the like. These solvents can be used alone or in combination.

In general, the solubility parameter (δ value) is a guideline for the dissolving power and solvent shock effects on dyes and pigments, but the smaller the δ value, the less the solvent's activity. The order is hydrocarbons, aromatic hydrocarbons, halides, ketones, alcohols, and water. Therefore, since aliphatic hydrocarbons do not cause deterioration such as dissolution and alteration to almost all M-class dyes and pigments deposited, even if the inorganic film is thin or has defects such as pinholes. As a result, even if the resin solvent permeates into the dye film during resin coating or development, it is possible to form a fine color pattern without imparting gloom to the dye film.

As the material for forming the O (thin film) used in the present invention, it is preferable to use a material mainly composed of rubber-based resin. Specific examples of the rubber-based resin include neoprene rubber, imprene rubber,
Examples include cyclized rubbers such as butanoene rubber, cyclized triisoprene, and cyclized polybutadiene, and natural rubber. In addition, these tj (as a photocrosslinking agent added to the fat, p-7
x nylenebisamide, 4,4-diazidobenzophenone, 4,4-noanodostilbene, 4,4-diazidocarphun, 2,6-no(4-7sidebenzal)-cyclohexanone, 2,6-no(4-azidocinna) Miliden)
Representative examples include and compounds such as -4-hydroxychlorohexanone. Of course, various additives for positive type 7 photoresists such as stabilizers, surfactants, etc. may also be added.

Specific examples of commercially available products consisting of such components are listed below: Lever, Tokyo Ohka Kogyo 0DORll0WR81, OMR83,0
MR85, OMR87, 83SS, 83SR, 8311
S; MR-747, KMf made by Eastman Cogunck
l-752; Japan Synthetic Rubber JSII-CBR, JS
R-CBR-901; Waycoat IC manufactured by Hunt
+WnycoatType31C, Waycoat S
C, 11aycoaL IIRvWaycoat 1I
For example, NIt-999 can be mentioned, but since aromatic organic solvents such as toluene and xylene are generally used as the solvent, it is not appropriate to use them as they are; It can be used after being replaced with the aliphatic hydrocarbons mentioned above.

The composition of the resin used in the present invention is not particularly limited, but generally, 100 parts by weight of aliphatic hydrocarbons and 117 parts by weight of rubber thread are used. 3 to 30 parts by weight and 0.0 parts by weight of a photocrosslinking agent.
It is appropriate to use a resist resin material having a ratio of about 3 to 10 mff/1 part.

The resin film 4 having such a composition is coated on the inorganic film 3, dried, and then prebaked under appropriate temperature conditions.

Next, ultraviolet light, far ultraviolet light,
Light exposure is performed using Xi or electron beams, and the unexposed portions of the uppermost layer are selectively dissolved using a developer to obtain a resist pattern 4. As the developer, the same aliphatic hydrocarbons as those used to dissolve the uppermost resin film are used.

Next, as shown in FIG.
Shi-CF4-CIIF*IC2Fs, CJslCCIt
7 The photoresist pattern 4 is transferred to the underlying inorganic film to obtain an inorganic film pattern 5. Due to this halogen-containing gas, etching of the exposed portion of the inorganic film 3 progresses easily, but resist patterns 4° and 1
The dye film 2 is relatively difficult to be etched.

As a result, the inorganic film 3 is etched selectively. In addition to the dry etching method, if the material of the inorganic film is used only if the resist pattern and selective etching is possible with an acid or alkaline solution, wet etching with an acid or alkali solution can also produce the resist pattern shown in Figure 1C. It is also possible to transfer pattern 4 to the lower inorganic film to obtain inorganic film pattern 5 shown in Figure PA1 e.

Next, the substrate is placed in a dry etching apparatus, and the dye N2 is selectively etched by, for example, a dry etching method using a gas mainly composed of oxygen.
As shown in FIG. 2, the exposed dye film 2 is removed. In the case of dry etching using oxygen-based gas, the resist pattern 4 shown in FIG. 1g is almost carbonized during this process when the exposed dye film 2 is removed. Fat and pigment films are easily etched (,
On the other hand, the p@silicon film is difficult to be etched, so selective etching is possible. In this way, the dye film pattern 6 covered with the inorganic film pattern 5 is obtained on the substrate 1. No fi * II butter 5ka, 5iOztPb
F2. If it is a transparent film such as MgO (regarding the light transmitting area of the color filter), the inorganic film pattern 5 can serve as a protective film for the pigment film pattern 6, and this fm1 diagram e can be used as a color filter. You can.

If the inorganic material 11 and pattern 5 are opaque such as 5itAI+Cr, it is necessary to remove the inorganic film pattern by dry etching using polyhalogenated carbon gas or the like. However, when forming a multicolor fine color filter, this inorganic substance and film pattern are removed after all dye film patterns are formed.

Above is the basic formation process of a single color fine color filter.
This was explained in Figures a-e. Next, with reference to FIG. Implemented.

That is, as shown in FIG. 1f, a dye film 7 of another coloring material is formed by vapor deposition or the like on the substrate on which the dye film pattern 6 is formed.Next, as shown in FIG. 1g, , an inorganic film 8 is formed, and a resist pattern 9 is further formed. As the inorganic film and the resist pattern, the same materials as those mentioned above as specific examples are used.

Next, as shown in the first diagram, an inorganic film pattern 10 is obtained by copying the resist pattern 9 onto the lower inorganic film 8 by means such as dry etching using % rogen-containing soot.

Next, as shown in FIG. 1g, the dye film 8 and the resist pattern 9 on the inorganic film pattern 10, which are exposed without being covered with the 7M silicon film pattern 10, are removed by dry etching using an oxygen-based gas. After removal, a fine color filter having two color pigment film patterns 6 and 11 is formed.

By repeating the processing steps of FIG. 1 f one more time, a fine color filter having three color dye film patterns 6, 11 and 13 as shown in FIG. 1 can be formed. Furthermore, by repeating the steps described above, it is also possible to form a dye film pattern larger than the surrounding area on the substrate.

As explained above, if the inorganic film patterns 5, 10 and 12 in FIG. By doing so, a fine color filter having a three-color dye film pattern as shown in FIG. 1 is formed.

Further, on the fine color filter of FIG. 1 I formed in this manner, SiO□, 14.
0, PbF2. NgF2+^120*1Sn02, etc. are formed into a film by vacuum evaporation or CVD, but polyurethane resin, polycarbonate) 1fJ]'ff, silicone resin, lathrenone, polyvaraxylene mu, etc. can be formed into a film by spinner coating. can.

Another configuration of a fine color filter is to coat a resin soluble in aliphatic hydrocarbons on the dye film on the substrate, form a film made of an inorganic substance on top of the resin, and apply a 7-otoresist on top of the resin. It may be constructed by forming a pattern. In this case, after imagewise exposure is applied to the photoresist, a seven-layer resist pattern is formed using a solvent, and then this pattern is transferred to the resin layer and exposed. Remove the pigmented film.

By forming a second dye film on the remaining photoresist pattern, a fine color filter can be formed.

This can be formed as shown in the cross-sectional view of the fine color filter in Figure 2 a-i, and by repeating this process, the mosaic-like fine color filter shown in Figure 5 can be formed. .

In addition, as a method for producing a fine color filter, the above-mentioned resin film is directly formed on the substrate to be adhered to the electrophotographic photoreceptor without intervening a dye film, a film made of an inorganic material is formed on top of the resin film, and a film made of an inorganic substance is formed on the resin film. After applying a 7-otolysist film to the 7-otolysist film to form a 7-otolysist pattern and transferring the pattern to the resin layer, the process of dyeing the exposed substrate with a dye film is repeated to form a fine color filter. The dye film 2 which may be provided on the electrophotographic photoreceptor of the invention is shown in FIG. 2, in which a dye film 2 is formed on a substrate 1 as shown in FIGS. 2a and 2b. The dye film 2 can be formed in the same manner as the method described above. Next, as shown in FIG. 2C, a resin layer 4 is coated on the pigment film 2 using a resin soluble in aliphatic hydrocarbons in the same manner as described above. The material for the resin layer 4 is the same as in the embodiment of the manufacturing method described above. This resin N4
An inorganic film 3 is formed thereon. 7 otoregis on this)
/15 is formed. This photoresist layer is made of neoprene rubber, which is a rubber-based resin, and 4,4-cyanodobenzo7-e/4,4-cyanodobenzo-7, which is an at compound as a photocrosslinking agent, as in the previous embodiment.
Formed by applying a mixture with As shown in FIG. 2e, light exposure 7 is performed using ultraviolet light, far ultraviolet light, X#i, or electron m'4 through an exposure mask.

Next, as shown in PIS 2, the exposed portion of the photoresist 7 is selectively dissolved using a developer to obtain a photoresist pattern 9.

Next, as shown in FIG. 2g, the substrate on which the photoresist pattern 9 has been formed is placed in a dry etching device, and etched with CF, , CIIP, , C2F, , C, F, , CCI
,,CBrF.

By etching using polyhalogenated carbon gas, halogenated hydrocarbon gas, or gas mainly composed of polyhalide gas such as BCI, SF, etc., the 7th photoresist pattern 9 is etched into the lower 7G. Transfer to the inorganic layer to obtain an inorganic layer pattern 8. The exposed portion of the inorganic layer 3 is easily etched by this halogen-containing gas, but the resist pattern is relatively difficult to be etched.
As a result, the inorganic layer 3 is selectively etched.

In addition to the dry etching method, the material of the inorganic layer can be
If the use is limited to those in which the resist pattern and selective etching can be performed using an alkaline solution, the resist pattern 9 shown in FIG. It is also possible to obtain the inorganic layer pattern 8 shown in g.

Next, the substrate is placed in a dry etching apparatus, and the resin layer is selectively etched by, for example, a dry etching method using a gas mainly composed of oxygen, so that the inorganic layer pattern 8 is etched as shown in FIG. is transferred to the lower resin layer to obtain a resin layer pattern 10.

In the case of dry etching using oxygen-based gas,
In this process, most of the seven photoresist patterns 9 shown in FIG. 2g are carbonized when transferred to the lower resin layer of the inorganic layer pattern 8. Selective etching is possible for photoresist and υ (fat layers are easily etched, whereas inorganic layers are difficult to be etched. Also, at this time, the dye film 2 exposed by etching the resin layer)
Since etching is an organic substance like the resin layer, the etching is not limited to just the resin layer, but the etching progresses until the substrate 1 is exposed, and the parts of the pigment film 2 not covered by the inorganic layer pattern 8 are also removed. On the other hand, the dye film 11(2) remains in the lower layer of the inorganic layer pattern 8. Therefore, in this case, steps r and g are performed simultaneously.

Next, as shown in FIG. 2i, a second dye film 12 is formed by vacuum evaporation.

Subsequently, by dissolving the resin layer 10 using the aforementioned aliphatic hydrocarbons, the inorganic layer pattern 8 and the unnecessary pigment film on the upper layer are removed, resulting in the pigment film pattern shown in FIG. 2J. 31 and the second dye film pattern 32 can be alternately formed on the substrate 1.

The dissolving power for dyes and pigments is as described above. In the method of the present invention, fine color patterns can be formed without damaging the dye film.

Above is the basic formation process of two-color fine color filter.
A case will be described in which a multicolor fine filter of three or more colors is formed on a substrate using the zero-order Pt52 diagram explained in FIGS. This is carried out by repeating the steps in Figures a-i.

As shown in FIG. 2k, 11111? using aliphatic hydrocarbons as a solvent? A resin layer 14 that can be dissolved with an aliphatic hydrocarbon is formed on the substrate 1 and the dye film (turns 11 and 32) using a solution.Specific examples of the resin and aliphatic hydrocarbon used here The same materials as previously described are used.

An inorganic film 15 is formed on the dog as shown in FIG. As for the inorganic film, the same material as mentioned above as a specific example is used.

next! @ As shown in Figure 2, 7 otoresist/W
The same material as that mentioned above as a specific example is also used for the 7-otoresist used in the 0-line process in which 16 is applied.

Next, as shown in FIG. 2n, light exposure 18 is performed through the exposure mask 17, and further, as shown in FIG. 20,
The exposed portion is selectively dissolved using a developer to obtain a 7 otolithic pattern 19. In this case, it is appropriate that the second dye film pattern 32 formed in FIG. 2 a-i is located below the photoresist pattern 19.

Next, as shown in FIG. 2, the Pt52 photoresist pattern 19 shown in FIG. obtain.

Next, as shown in FIG. 2q, the inorganic material I flash (turn 20) is transferred to the lower resin layer to obtain the resin layer (turn Z1) by dry etching using an oxygen-based gas.

The exposed dye film is also removed by further etching.

Next, as shown in FIG. 2, a dye film 22 of the third color of fjS is formed by vacuum evaporation.Next, by dissolving the resin layer 21 using aliphatic hydrocarbons, the inorganic layer pattern and its resin are formed. The unnecessary dye film of the layer can be liberated to form a fine color filter having the three color dye film patterns 32, 33 and 34 shown in FIG. 2S.

By repeating the steps described above, it is possible to form a dye film pattern larger than the surrounding area on the store board.

In the same manner as in the previous case, light exposure 7 using ultraviolet light, deep ultraviolet light, X-rays, or electron beams is performed through an exposure mask 6 as shown in FIG. d of fjS3.

Next, as shown in FIG. 3g, the exposed portions of the photoresist are selectively dissolved using a developer to obtain a photoresist pattern 9.

Next, as shown in FIG. 3f, the substrate on which the photoresist pattern 9 has been formed is placed in a dry etching apparatus, and CF, CIIF*, CzFs, CJs+CCl+-
The photoresist pattern 9 is etched using a gas mainly composed of polyhalogenated carbon gas or halogenated hydrocarbon gas such as CBrF*, or polyhalogenated gas such as BCI□SF, thereby removing the underlying inorganic material. The layer is transferred to obtain an inorganic layer pattern 8. Although the exposed portion of the inorganic substance M3 is easily etched by this halogen-containing gas, the resist pattern is relatively difficult to be etched. As a result, etching of the inorganic material/FI3 is selectively performed. In addition to the dry etching method, if the material of the inorganic layer is limited to one that can be selectively etched with a resist pattern using an acid or alkaline solution, wet etching using an acid or alkali solution can also be used as shown in Figure 3r. It is also possible to transfer the resist pattern 9 shown in FIG. 3 to the lower inorganic layer to obtain the inorganic layer pattern 8 shown in FIG. 3g.

Next, the substrate is placed in a dry etching apparatus, and the resin layer is selectively etched by, for example, a dry etching method using a gas mainly composed of oxygen, to form an inorganic layer pattern 8, as shown in the third diagram. A resin layer pattern 10 is obtained by copying the eaves onto the lower fat layer.

In the case of dry etching using oxygen-based gas,
In this process, most of the photoresist pattern 9 shown in FIG. 3r is carbonized when it is transferred to the resin layer below the inorganic layer pattern 8. For oxygen, selective etching is possible because photoresist and O (fatty layers) are easily etched, whereas inorganic layers are difficult to be etched.

Next, as shown in the third diagram, the zero dye film forming the second dye film 11 can be formed by various methods, but it is particularly advantageous to form it by vapor deposition of a dye. In the case of vapor deposition, a dye film can be formed using only the dye, and since a mordant layer in the dyeing method is not required, the film can be made extremely thin and the dye film can be formed by a non-aqueous process.

Subsequently, using the aforementioned aliphatic hydrocarbons, resin/? W1
By dissolving the inorganic layer pattern 8 and the unnecessary dye film thereon, the dye film pattern 11 shown in FIG. 3I can be formed on the substrate 1.

The basic forming process of a fine color filter is shown in Figure 3a-
It was explained in i. When the entire process is completed using only a single color, the resin layer 4 shown in FIG. 3g does not necessarily need to be formed using a resin solution using aliphatic hydrocarbons as a solvent, and It is sufficient if the resin layer can be dissolved by the aliphatic hydrocarbons in the step.

Next, the case of forming a multi-color fine filter of two or more colors on a substrate will be explained with reference to FIG. Implemented. As shown in FIG. f53 j, a resin solution containing aliphatic hydrocarbons as a solvent is used to form a decomposition IIIF layer 12 on the substrate 1 and the dye film pattern 11, which is soluble in aliphatic hydrocarbons. As specific examples of the resin and aliphatic hydrocarbons used here, the same materials as those described above are used.

Next, as shown in FIG. 3k, an inorganic film 13 is formed. The same materials mentioned above as specific examples are used for the inorganic film.

Next, as shown in FIG.
4 is formed. As for the 7-otoresist used in this step, the same material as mentioned above as a specific example is used.

Next, as shown in FIG. 3-, light exposure 16 is applied through the exposure mask 15, and as shown in FIG. 3-g,
The exposed portions are selectively dissolved using a developer to obtain 7 photoresist patterns 17. In this case, the dye layer 11 formed in FIG.

Next, as shown in FIG. 30, the 7 photoresist pattern 17 of FIG. 3g is transferred onto the lower JVI inorganic material f118 by means such as dry etching using a halogen-containing gas or the like to obtain an inorganic layer pattern 18. As shown in FIG. 3P, the inorganic layer pattern 18 is transferred to the lower resin layer by dry etching using an oxygen-based gas, thereby obtaining a resin layer pattern I9. As shown in FIG. 3q, the second color pigment film 20
is formed by a vacuum evaporation method.

Subsequently, by dissolving the resin layer 19 using aliphatic hydrocarbons, the inorganic layer pattern 18 and the unnecessary dye WX20 in the upper layer are removed, thereby obtaining the dye layer 21 and the dye layer 11 shown in FIG. 3r. Can be done.

By repeating the steps described above, it is possible to form a tricolor and surround filter on a substrate.

Various pigments are appropriately selected and used as the pigments of the fine color filter used in the electrophotographic photoreceptor of the present invention.

For example, (1) Azo colorant (n) Aceto7Seticanilide Yirgalite, Yellow GTN (C, 1, No 1
1680) Saw, Yellow D1250 (C
, 1, NO11680) Hansa, Yellow GR (C,!
, No. 11730) Goji. Yellow D1950
(C, 1, Na 11710) Irgalite, Yellow 10G (C, 1, No 11710) Irgalite, Yellow 5GL (C, 1, No 1186
5) Lysozol, Fast, Yellow Y (C, 1, NO11660) Daimuchi. First, Ie C7-3Q (C91,!l
θ11670) Irugarai l-, (Yellow BGC(C, 1, No 2
109G) Permanent, ICr-GR(C,1,
No. 21100) Permanent, Ieo-G
(C,1,No 211195) Benzidine, Yellow 10G (C,1,No 2i220) Irgalite, Yellow 2GP (C,1,No 21!05)
(b) Pyrazoline azo Hansa, Yellow R (C, 1, No 12710) (c
) Monoazo monolite of naphthols, Fγ-I-, Red 15 (C, 1, No.
12070) Schiff. 7 Earth, Red D3 Fu52 (C, 1, No 12310) Schiff. Red L3750 (C, 1, No.
12120) Schiff. Red L3250
(C, I, No 12085) Oriental, Red F
BNew (C, 1, No 12490) Monolite, Red PC (C, I, No 12090) Rosso, Segnard, Ruth F4RH (C, 1, No 12420) Schiff. Red 04250 (C, I, No
12335) Rosso, Segnard, Ruth F2L (C, I, No 12460) Rosso, Seignard, Ruth FRL (C0I, No 12440) Ilgarite, Bordeaux FBS (C, 1, No 1
2430) Schiff. Bordeaux L4851 (C,
I, No) 2385) Permanent, Bordeaux FCR
(C, T, No 12380) Simiera, 7 Earth, Maroon 4092 (C, I, No 12465) Guinichi, 7 Fust, Poppy, Red G (C11, N
o 12390) Monolite, Rubine N (C, 1, No +2350)
Ali Ride, Machine. Dark <C, 1, No +24
QO) Sanyo, First, Red CI (C, 1, No. 12300) Grunidge, First, Scarlet G (C91, No.
+2315) First, Shi 1 de 6 New (C, 1, No 12355) Bolimo, Red R (C, i, No 12330) Bolimo, Rose FRI, (C, 1, No 123
20) Dainiji, Naphthyramine, Bordeaux (C, 1, No. 12+70) Shiko, 7γ-St, Red 13855 (C, 1, N (+ 12370) Ciminilla-. Fast, Carmine BS (C, 1, No.
+2351) Permanent, Carmine FIII (C,!, No
:2485) Vermanen l-, pink! '311
(C,!, No +2430) Pv・-Carmine II
R (C, 1, No 12290) C = 1. Feast, Scarlet 1.4252 (C0I, No 124
75) Permanent, Maroon HFM (C0I, No 1
2512) Permanent, Red HFT (C,1
, No. 12513) pv-carmine 11F3 [:
(C, 1, No 12515) Hermanent, Carmine HF4 [; (C, 1, No 1
2516) PV-Red HF2
(C, 1, No 12514) Monolite, green,
Y (C, 1, No 12775) (2) 7thraquine colorant Helio, 7 Earth Maroon, E3R Sanyo, Carmine L2B (C, I, No 58000) Monolite, Red Y (C, I, No 593
00) Chromo7 Tar, ^CR Paliozon, Red L3530 (C, I, No
59710) Paliozone, Maroon L3820 (C
, I, No. 71130) Paris Ozone, Red L388
0HD (C, 1, No 71155) Kaya set,
Scarlet E-2R (-C, 1, No 71140)
Helio, First, Nair RLW (3) Indigoid colorant Cromo 7 Tal, Bordeaux R (C01, No. 73312
) Lionoden, Magenta R (C, 1, No 73915
) 616 Red R (C, 1, No 73395) Ofris. Brilliant, Pink R (C, 1, No 73360) (4) Quinacridone Colorant Lionodene, Magenta R (C1I, No 73915)
Hosta Palm, Red EC (C, I, No 73905
) Lionoden, Red 2B (C,lNo 4
6500) ゛Cyncasia, Magenta RT-243-D
Syncasia, red, blue RT-790-D (5)
Isoindolinone colorant Geo/Ken, Yellow 3GX Geo/Ken, Yellow RX Mo/U4), 4Ihi-BV (C, 1, No.
73000) (6) Indathlon colorant 7 Earthden, Super, Blue 6011^■^(C
, 1, No. 69800) Bolimo, Navy Blue FR (C, 1, No. 6983
5) Lysozol, Blue GL (C, 1, No
69810) (7) Dioxazine colorant Cromo 7 Tal, Violet B 7 Earth Den, Super, Violet) BBL (C
, 1, No. 51319) (8) Migthrene, an indathrene colorant. Yea-(:CM (C, 1, No
6] 300) Migslen. Yellow (C01
, No. 68420) Migslen. Orange R (C, 1
, No. 73335) Mikethren, Scarlet G Migthren. Brilliant, Pink R (C0I, No 73360) Migslen. Brilliant, Violet RR (C, 1
, No. 60010) Migslen. Blue 30 (C, 1, No
69840) (9) Triphenyl, methane colorant 7 anal, blue 06340 (C, I, No
42595:2) Guinichi, 7r-St, Blue BOX (C, I, No 44045:2) Irgalite, Blue TCR (C, I, No 4214
0:1) 77 natons, blue 6G (C, 1, N
o 42025:1)/N Loin. blue RNN
(C0I, No 42600:1) 7 rex,
Blue G (C, 1, No 42700:1) Alkaline, Blue, Toner (C, I, No 42750:
1) Blue, Lake, 24572^ (C0I, No
42090:1) Shi7rex, Blue CG (
C, 1, No 42800) Shi7 Rex, Blue RB
(C, I, No 42795) 77 Naru, Blue 06380 Irgalite, Green, BN (C, I, No 42
040:1) Guinichi, 7 Hoost Green B (Cj, No. 42000:2) (10) Nitron Colorant Monolite, Green B (C, 1, No. 10006)
Monolight, green mouth (C, 1, No 100
20:1) (11) 7 Talocyanine pigment Copper 7 Talocyanine (α type) (C0I, No 7
4160) Copper 7-talocyanine (β type) Metal-free 7-talocyanine (C, 1, No 741
00) Chlorinated 7-lycyanine (C, I, No
74260) Chlorinated phthalocyanine (C,1,
No. 74255) Lead 7 Talocyanine Zinc Phthalocyanine Iron 7 Talocyanine Gold 7 Talocyanine Chromium 7 Talocyanine (12) Dispersible dye Cibaset, Red” (C, 1, No 11
210) Lurafix, Red BF (C, I,
No. 60756) Seriton, Violet B
(C, I, No 62030) Seriton, Ie o-5
R (C, I, No 26090) Terrasil, Yellow 2
GM (C, I, No 47020) Migton.

Fast, Blue (C, I, No. 64500) Chipaset, Blue F3R (C, 1, No. 61505) Lula Fix, Blue FFR (C, I, No. 8203
5 Kaya Set, Blue 318 Kaya Set, Turkey/Iz, Blue 776 (13) Basic Dye Rhodamine 6GCP (C, I, No.
45160) Rhodamine F3B (
C, I, No 45174) Astra, 70 Kin G
(C, I, No 48070) Makiron, yellow 5 and L (C, I, No 48055) Crystal, violet (C, 1, No 42555)
Rhodamine B (C, I, No 4
5170) Victoria, Blue FB (C81
, No. 44045) Malachite, Green (
C, I, No 42000) Ethyl violet
(C, 1, No 42600) Nile, Blue
(C, 1, No 51180) 7″' ”
:/7 (C, 1, No 50240) (14) Oil-soluble dye Kayaset Red B Kayaset Blue ^2R Kayaset Yeo -G (C, I, No 1
1855) Kayaset Blue FR Kayaset Yellow 80 Kayasets Yellow 963 Pyranine (C, 1, No 590
40) Guyacinone. Red H Guyacinone. Blue N Sugunpuru (C0T, No 615
25) Quinizarin Quinizarin Blue (C, 1, No 607
25) Quinizarin Green (C, 1, No.
61585) (15) Acid dye Soler, Pure, Yellow 8G (C, I, No 5
6205) Solar, Pure, Blue 8 FX (C, 1
, No. 42080) Fluorescein (
C, I, No 45350) Fluorescein Na Rose Bengal (C, I, No 454
40) Alizarin, Cyanine Green F (C, I, No 61570) (16) Architectural dye Innovo (C, 1, No 730)
00) Chiba, Blue (C, 1, No
73065) Innovozole (C,1,
No. 73002).

As the substrate for the filter film of the electrophotographic photoreceptor of the present invention, various substrates can be used depending on the purpose of use, but the substrate is not limited to the following. Specifically, the following substrates can be used. For example, a glass plate, an optical U1 Lipid, gelatin, polyvinyl alcohol, hydroxyl ethyl cellulose, methyl methacrylate, polyester, polybutyral, polyamide, etc.? For example, AtrII film. Furthermore, an electrophotographic photoreceptor 21 is manufactured by integrally forming the color filter and the substrate.

Since the dye film used in the electrophotographic photoreceptor of the present invention is protected by an inorganic film during formation of the dye film pattern, the dye film is hardly affected by the formation of the photoresist pattern. In addition, even if there is no mucous membrane or there are defects such as pinholes on the mucous membrane, 7
Even if the photoresist solvent seeps into the dye film during coating or development, since aliphatic hydrocarbons are used as the solvent, what will happen to the dye film? ? It has no effect. Therefore, dissolution or cloudiness does not occur in the pigment film, and cracking of the pigment film due to solvent staining can be prevented, and a pigment film made of the desired pigment can be formed to achieve the desired spectral characteristics. You can create a color filter with

FIG. 4A is a sectional view showing the structure of an electrophotographic photoreceptor having the color filter, that is, a color separation filter, formed according to the present invention, in which the electrophotographic photoreceptor is used as a substrate to which seven fine color filters are adhered. It is a block diagram when it is used.

FIG. 4B is a sectional view showing the structure of an electrophotographic photoreceptor having a fine color filter using a transparent substrate such as a plastic film as a base, and 1 is the transparent substrate.

That is, in FIG. 4, 11 is a conductive substrate, 10
is a photosensitive layer, and 5 is a fine color filter formed on the photosensitive layer 10. Therefore, 5R is red, 5G is green, 5
B indicates a blue colored portion.

On the other hand, FIG. 4B shows a configuration in which the surface of a fine color filter formed on a transparent support such as a plastic film is laminated and adhered to the surface of the electrophotographic photosensitive layer 10 via an adhesive layer 9. 1 is a substrate (protective film), and 5 is a fine color filter consisting of red, green, and blue as described above. Reference numeral 9 denotes an adhesive layer, which serves to fix the fine color filter on the photosensitive layer 10.

According to the present invention, any conventional bonding method can be used as the above bonding method, such as ? A method of adhering an am color filter and the above-mentioned photoreceptor through a laminator, a method of adhering the filter and the photoreceptor temporarily, placing it under negative pressure, and applying atmospheric pressure; Pressure &
There is a method of adhesion by continuously applying 52 qi. In the above-described method of adhering through a laminator, adhesion is performed by applying adhesive M to a sheet-like photoreceptor and applying pressure and heat through a laminator roller together with a color separation filter. Furthermore, in the latter method, that is, in the method of bonding by placing under negative pressure and then applying atmospheric pressure and blowing compressed air, bonding is performed through a layer of adhesive.

Regarding the adhesion direction in the above adhesion, the surface of the transparent substrate of the fine color filter may be adhered to the a-adhesive layer provided on the surface of the photoreceptor, or the surface of the filter may be directly adhered. The adhesive used to bring the photoreceptor and the filter into contact is not particularly limited, and various adhesives and pressure-sensitive adhesives can be used. , α, silicone oil (for example, Shin-Etsu Silicone KF-96) is used to maintain adhesion.
For purposes requiring tackiness, silicone oil (for example, Shin-Etsu Silicone KR-101-10) is particularly preferably used.

Next, referring to the shape and arrangement of the fine color filter according to the present invention, the shape and arrangement of the fine color filter useful in the present invention are not particularly limited, but as shown in FIG. If the photoreceptor is in the form of a drum, for example, a linear shape may be used, such as one in which the lines are perpendicular to the direction of rotation, or one in which the lines are parallel to the direction of rotation.

However, usually a mosaic structure as shown in Figures B and C in Figure 5 is used, and the size of each filter is 30 to 500μ as the color repetition width (1+, 12> in Figure 3).
Preferably a spear. If the size of the filter is too small, it will be easily influenced by other adjacent color parts, and if the width of one filter is equal to or smaller than the particle size of the toner particles, it will be difficult to manufacture. 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. In addition, FIGS. 4A and 7B and FIGS. 5A to 5C all show the case where so-called three-color separation filters of red, green, and blue are provided. In FIG. 9, R is red, G is green, and B is Although a blue filter is shown, the coloring of the fine color filter according to the present invention is not limited to these three colors, and a filter layer of any color can be formed as necessary.

As described above, the electrophotographic photoreceptor of the present invention has a photoconductive photosensitive layer provided on a conductive substrate.

The conductive substrate 1 may be made of metals such as aluminum, iron, nickel, so-called metals, or their alloys, etc. to form a cylindrical endless belt, or may be formed into an appropriate shape (1η structure) as required. Photosensitive layer 10 photoconductors such as sulfur, selenium, amorphous silicon or alloys containing sulfur, selenium, tellurium, arsenic, antimony, etc., or oxides, iodides, and sulfides of metals such as zinc, lead, mercury, cadmium, molybdenum, etc. materials, Kuroiso photoconductive substances of selenides, dyes such as azo, noazo, trisazo, and 7-talocyanine, pigments and vinyl carbazole, trinitrofluorenone, polyvinyl carbazole, oxanoazole, hydrazone compounds, stilbene derivatives, It is formed by dispersing and coating a charge transporting substance such as a styryl derivative and TJ (fat).

Such binder resins include polyethylene, polyester, polypropylene, polystyrene, polyvinyl chloride, polyvinyl acetate, polycarbonate, acrylic at m
, silicone resin, 7); Examples include insulating resins such as X resin and epoxy resin.

A functionally separated photoconductor having a charge generation layer and a charge transfer layer is also used.

According to this process, a photoreceptor is used, in which a photoreceptor layer having photosensitivity over the entire visible light range and a plurality of color separation filters arranged in a fine linear or mosaic pattern is first subjected to image exposure. A primary latent image corresponding to the resolved image density is formed on the photosensitive layer at the bottom of each filter, and then the entire surface of the photoreceptor is exposed to light of a specific color (in the example, the same color as the filter) to filter the filter of the color. A second latent image is formed only in the second latent image, and a potential pattern corresponding to the light intensity of the first latent image forming process is formed. Then, it is developed with toner of a color corresponding to the color of the filter, preferably a color complementary to the color transmitted through the filter.

Thereafter, recharging is performed to smooth the surface potential, and the entire surface is exposed to specific light to form a potential pattern in the next decomposition filter section.
A multicolor image is formed on the photoreceptor by repeating the development process using toner having a complementary color to that of the filter. This multicolor ii! The ii images are superimposed and transferred onto the recording paper in a single transfer.fjS6 Figures [1] to [8] show that a part of the photoconductor, which uses an n-type semiconductor such as cadmium sulfide as the photosensitive layer, is taken out and This is a schematic representation of the image formation process in . In the figure, 11 and 10 are a conductive substrate and a photosensitive layer, respectively, as in FIG.
．． G, R) are decomposition filters.

The graphs at the bottom of each figure in FIG. 6 show the potential on the surface of each part of the photoreceptor.

First, a positive charge is generated on the surface of the filter 5 by applying a positive corona discharge to the entire surface by the charger 14, and correspondingly, a negative charge is induced at the interface between the photosensitive layer 10 and the filter 5, and the FA
The state will be as shown in Figure 6 [1].

Next, alternating current or negative discharge is applied by a charger 15 equipped with an exposure slit to erase the charges on the surface of the filter 5 while exposing the image from the multicolor original.

In the photoreceptor of the present invention, red, green,
Image formation is performed by performing blue multicolor image exposure, but for the sake of clarity, the image formation process will be described using an original having only a red image as an example.

FIG. 6 [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 section 5R and makes the photosensitive layer M10 located below it conductive, so that most of the positive charges on the filter S are erased and the negative charges induced in the photosensitive layer N10 are removed. Charges are also erased, and the surface potential becomes close to the @ potential.

On the other hand, since the green and blue separation filter section 5 (:, 5B) does not transmit the red light L, some of the positive charges on the filter 5 are erased, but the negative charges of the photosensitive NJ10 width remain as they are. Then, charges corresponding to the partially erased positive charges are induced in the conductive substrate 11. In this charge arrangement, the surface potential on the green and blue M filter parts 5G and 5B becomes zero potential. It will be close. However, the charger 15
The polarity may be reversed by controlling the grid voltage using a Suflotron charger to obtain a uniform surface potential of, for example, -200V. Therefore, the filter has a charge pattern as a primary latent image, but a toner image cannot be formed because no surface potential difference is generated.Specific light that causes a potential pattern only in a part of the 9th order resolution filter, for example, The entire surface is exposed to blue light (arrow LB) obtained by the light source 16 and the blue filter FII.

In this case, part of the negative charges on the photosensitive layer 10 under the decomposition filter 5B that transmits the blue light L[l and the positive charges on the conductive substrate 11 are neutralized, and the decomposition filter 5B as shown in FIG. 6 [31] is neutralized.
Positive and negative charges remain between the portion and the photosensitive layer 10, giving a positive surface potential to the color separation filter 5. As shown in FIG. 6 [4], this is applied to the negative yellow toner Ty.
A partial yellow toner image of the separation filter 5B is formed by developing with the developing device 17 carrying the toner. In the area of the separation filter 5B where this yellow toner image was formed, the surface potential remains unsaturated by the toner, so the lower part of the filter 5B remains unsaturated. As shown in No. 7, a relatively high surface potential remains, and there is still room for another toner to adhere during the next development step.

Therefore, the surface of the filter 5 is recharged with alternating current or negative direct current.
Preferably, a negative corona discharge is applied by the Suflotron charger 18 to restore the flat surface potential as shown in the lower graph of FIG. It's good to do that.

Next, by exposing the entire surface to light a16 and green light (arrow LG) obtained by the green filter FC, the negative charges in the photosensitive layer 10 and the conductive substrate 11 are removed as shown in FIG. The positive charges of are neutralized, and a high surface potential in the lower graph is obtained in the 5G region of the filter 5. The developing device 19 carrying the magenta toner TM shown in FIG. 6 [7]
A magenta toner image is obtained in the 5G region by developing with 5G. After being recharged to the 0th order (t56 diagram [8]), the entire surface is exposed to red light obtained by the red filter FR, but at this time, the potential pattern No cyan toner T
In this way, the yellow toner image and the magenta toner image are transferred onto the recording paper, and if the recording paper carrying the toner images is fixed at a constant rjt3,
As the paper passes, a red image in which yellow and magenta are visually superimposed is observed.

The above explanation is based on the case where the original is a red image, but the same applies when the original is a white, green, blue, yellow, magenta, cyan, or black image. Color reproduction is achieved through combinations. FIG. 7 is a diagram illustrating the process of color reproduction when such originals of each color are used. In FIG. 7, 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.

The symbol "CD" represents the -order latent image formation, the symbol "O" represents the secondary latent image formation, and the symbol "■" represents the process of each stage of toner image formation. Further, the symbol "↓" indicates that the state in the upper column is maintained as it is, and the blank column indicates a portion where latent image formation is not performed.

In addition, although an n-type semiconductor is used as the photoreceptor in the description, it may also be a photoreceptor using a p-type semiconductor such as selenium, and in this case, the basic sign is reversed. There is no difference.

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 explanation in -1- below, the photoreceptor according to the present invention is a photoreceptor in which an insulating fine color filter is provided on the photoreceptor layer, and a method for forming an image using the photoreceptor includes:
After a primary latent image is formed by a single image exposure, a secondary latent image is formed for each color of the fine color filter by full exposure using a three-color separation method, and is developed with toner of the corresponding color. A multicolor image is obtained by repeating the recharging process.

For example, the NP method is used, which utilizes charges induced in the photosensitive layer as described above, but when forming a secondary latent image by second and subsequent full-surface exposures, it eliminates the negative effects caused by the residual latent image from the first exposure. Therefore, recharging is required. This recharging is carried out by an alternating current or negative direct current discharge, preferably by a negative corona discharge using a Sufrotron charger.

Note that "charging" as used in the method of the present invention includes cases in which 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. (Japanese Patent Application No. 60-22952.4) The development in the present invention is preferably carried out by a magnetic brush method, and the developer is so-called one-component development using a non-magnetic toner or a magnetic toner, or a magnetic toner such as toner and iron powder. It can be used with any two-component developer mixed with a carrier. For development, a method of direct rubbing with a magnetic brush may be used, but after the second development, in order to avoid the formed toner image, a development method is used in which the developer layer does not adhere to the photoreceptor surface,
A developing method in which the gap between the developing sleeve and the photoreceptor is set to be larger than the thickness of the developer layer on the sleeve (provided there is no potential difference between the two), for example, U.S. Pat. No. 3,893,
No. 418 Meiji JI3, Japanese Patent Application Publication No. 18656/1983, Japanese Patent Application No. 58/1974, Japanese Patent Application No. 58/1982: 11829
It is particularly preferable to use the methods described in Japanese Patent No. 5 and Japanese Patent Application No. 58-238236. In this method, a one-component developer consisting only of non-magnetic toner that can freely select the coloring, and a two-component developer M containing non-magnetic toner are used, and an alternating current electric field is formed in the development area to form a goo image support and a developer layer. It is preferable that development is carried out without contacting. However, a developer using magnetic toner may be used.

The color toner used for development consists of known adhesive resins commonly used in toners, various chromatic colors such as organic and inorganic pigments and dyes, and various additives such as charge control agents.
It is possible to use a toner for developing a goo image made by a known technique, and as a carrier, iron powder or ferrite powder usually used for Seiden images, more preferably iron powder or ferrite coated with a resin, or Various known carriers can be used, such as a high-resistance magnetic carrier such as one in which a magnetic substance is dispersed in +H blood.

In addition, the applicant filed the patent application No. 58-24966 earlier.
9 and No. 58-240066 may be used.

[Effect of the invention 1] As is clear from the above, the fine color filter according to the present invention does not require etching of the coloring material film, so the already formed color elements are not eroded, so the intermediate layer etc. do not need. Therefore, there is no reduction in transmitted light due to only the color elements of the filter according to the present invention, and since the electrophotographic photoreceptor of the present invention does not require an intermediate layer or a resist mask, it has excellent heat resistance. Furthermore, since the coloring material film is formed parallel to the surface, a fine color filter with uniform spectral characteristics can be obtained.

Therefore, when forming an image using the electrophotographic photoreceptor of the present invention having the above-mentioned fine color filter, after charging and image exposure, repeating the entire surface exposure with specific light and development will prevent density unevenness, sharpness ν1, color tone, etc. Compared to conventional photoreceptors, it was possible to obtain multicolor images with superior image quality.

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

(Image Formation Using Photoreceptor of the Present Invention) FIG. 8 shows essential parts of a multicolor image forming apparatus for copying a multicolor image using the photoreceptor described above obtained by the image forming method according to the present invention. FIG. SD is a photosensitive drum 4 in which the film-like photosensitive member 40 is mounted on a metal drum;
1 is a positive DC-order charger, 42 is a negative DC corona discharge scorotron charger having a slit for image exposure, 43
B is a light source that has a blue filter F[l and irradiates blue light LB, and 44Y is a developer containing yellow toner.

45 is a scorotron charger for negative DC corona discharge, 46
G is a light source that has a green filter FC and emits green light Lll; 47M is a developer containing magenta toner; 48
5 is a scorotron charger for negative DC corona discharge; 49R is a light source that has a red filter FR and emits red light LR;
0 is 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 side of the electrode to white light, and 54 is a cleaning blade for removing residual toner.

First, the assembled photoreceptor 40 is uniformly positively charged by a charger 41, and then a scorotron charger 42 for corona discharge is applied, and at the same time image exposure from the three primary color originals of blue, green, and red is performed. Perform scanning exposure. 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, the blue filter Fr
The entire surface is exposed L8 by a white light source 43B equipped with
An electrostatic charge image corresponding to the second-order latent image is formed in the region of the blue color IIIF filter, and this is developed into yellow by a yellow developing device 44Y. Next is the negative suflotron? i? Electric appliances 45
A white light source 46G equipped with a trailing edge color filter FC that erases a goo image remaining in the area of the blue separation filter by
The entire surface is exposed LG using the following method, and magenta development is carried out using a magenta developing device 47N.

Next, after erasing the remaining goo image with a negative suflotron charger 48, a white light source 4 equipped with a red filter Flt
Full-surface exposure LR is performed using 9R, and cyan development is performed using a cyan developer 50. In this way, a multicolor toner image corresponding to the original is formed on the photoconductor, and then the transfer 71 is transferred to the recording paper P fed at the same timing by the action of the pole 51, and separated by the action of the separation electrode 52. After that, the image is fixed by a fixing device (not shown).

On the other hand, after the transfer, the photoreceptor 40 is neutralized by a static eliminator 53, and then residual toner is cleaned by a cleaning blade 54, and the photoreceptor 40 is 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 M 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 color of the separation filter and the combination of the corresponding toner color can be arbitrarily selected depending on the purpose.

[Brief explanation of the drawing]

1, 2, and 3 are cross-sectional views of a filter showing an example of the manufacturing process of the fine color filter used in the electrophotographic photoreceptor of the present invention, and FIG. Figure #IJ5 is a cross-sectional view showing the configuration of the electrophotographic photoreceptor having
The figure is color g, a diagram explaining the process of forming an image from a manuscript, number 7.
The figure is a diagram illustrating the process of forming images from various colored originals, and FIG. 8 is a sectional view of essential parts of a multicolor image forming apparatus using a photoreceptor according to the present invention. 1... Transparent substrate 5... Color filter layer 9... Adhesion WJ'to... Photosensitive layer 11... Conductive substrate Applicant Konishi Roku Photo Industry Co., Ltd. No. 1 Fig. 2 Fig. 2 Figure 3 Figure 5 Hino → No. 6]

Claims (1)

[Claims] 1) A step of forming on a substrate a film made of an inorganic material that can be removed after film formation and a resin film that can be dissolved in aliphatic hydrocarbons, and a step of forming a film made of an inorganic material that can be removed after film formation and a resin film that can be dissolved in aliphatic hydrocarbons, and applying a film on the surface of the top layer of these films. A step of performing imagewise exposure on the surface and removing the uppermost layer film according to the exposure pattern to form a relief image, and removing the exposed dye film previously laminated on the formed substrate, An electrophotographic photoreceptor comprising, on a photosensitive layer or a transparent support, a fine color filter in which a dye film of a desired shape is formed by applying a dye film to an exposed pattern area. 2) A step of forming a dye film on the substrate, a step of forming a film made of an inorganic material and a resin film soluble in aliphatic hydrocarbons on the surface, and performing imagewise exposure on the uppermost resin film to form an exposure pattern. 2. The electrophotographic photoreceptor according to claim 1, wherein a fine color filter is formed on the photosensitive layer and the transparent support by a step of transferring a resist image according to the above method to a lower layer film and removing the exposed dye film. 3) A step of forming a resin that is soluble in aliphatic hydrocarbons on a substrate, forming a film made of an inorganic substance on this, forming a photoresist layer as the top layer, and imagewise exposing this resist layer, A patent claim having a fine color filter formed on a photosensitive layer and a transparent support by forming a resist pattern, transferring the pattern to a lower layer film, exposing the substrate, and forming a dye film on the exposed portion. The electrophotographic photoreceptor according to any one of the ranges 1 to 2. 4) Forming a film made of an inorganic material that can be removed after film formation and a resin film that can be dissolved in aliphatic hydrocarbons on a substrate, and performing imagewise exposure on the surface of the top layer of these films. , removing the resin film according to the exposure pattern using an aliphatic hydrocarbon developer and removing the inorganic film. Using an electrophotographic photoreceptor having, on a photosensitive layer or a transparent support, a fine color filter on which a dye film of a desired shape is formed by removing or applying a dye film to the exposed pattern area, On the other hand, an image forming method is characterized in that after charging and imagewise exposure, a multicolor image is formed on the photoreceptor by repeating whole-surface exposure with specific light and a plurality of development steps.