JPH0281073A - Image forming method - Google Patents

Abstract

PURPOSE:To speedily form a high quality image with high transfer efficiency by transferring an electrostatic latent image developed on a photosensitive body by developer, which is solid at room temperature and reversibly repeats heating fusion and cooling solidification, onto material to be transferred. CONSTITUTION:The photosensitive body 3 on which an electrostatic latent image is developed after a developer 4 selectively sticks to it is brought into contact with the body to be transferred 5 such as normal paper. At this time, the photosensitive body 3 is heated to a prescribed temperature by a heater 2 incorporated in a stage 1, and the developer 4 is heated and fused. Therefore, when the body 5 is brought into contact with the developer 4, it readily moves to the body 5, and a part of the developer is shifted into the inside of the body 5. When the body 5 is separated from the photosensitive body 3, transfer is completed to form an image on the body 5. By these operations, a high quality image excellent in gradation and resolution can be formed with high transfer efficiency.

Description

[Detailed Description of the Invention] (Industrial Application Field) Is the present invention applicable to electrophotographic processes, etc.? ? Concerning formula expression method.

(Prior Art) In the field of image forming technology, a method in which light is selectively irradiated onto a negatively charged photoreceptor according to an image signal and the formed electrostatic latent image is developed is generally an electrostatic latent image. It's called the photographic process. This electrostatic photographic process can be roughly divided into a dry developing method and a wet developing method.

Among these, the wet development method uses a liquid developer in which a dye or pigment as a coloring agent is dispersed in the form of fine particles in an insulating medium. According to the wet development method, it is possible to obtain resolution and gradation comparable to silver halide photography, and the weather resistance of the formed image is excellent, especially when pigments are used as colorants. Development is progressing in all directions.

In addition, the applicant of the present application previously filed a patent application filed in Japanese Patent Application No. 63-156 to improve the storage stability and handling properties of the above-mentioned liquid developer.
No. 846 discloses an electrostatic latent image developer in which colorant particles are dispersed in an electrically insulating organic compound that is solid at room temperature and has an average molecular weight of 12,000 or less.

[Problem to be solved by the invention]

By the way, in order to record and preserve the electrostatic latent image developed as described above in a readily visible form, it is preferable to transfer it to a suitable transfer object. However, in the conventional wet development method, the adsorption between the colorant particles and the photoreceptor is too strong, resulting in a decrease in transfer efficiency, and the method is not necessarily suitable for the purpose of image formation in pursuit of high image quality.

In contrast, image forming methods that do not involve transfer, such as so-called electro-fax, have also been proposed. This is a method of directly forming an image on a transparent photoreceptor such as polyvinyl carbazole or a white photoreceptor such as ZnO. However, since the amount of sensitizing dye used is naturally limited due to the need to maintain appropriate transparency or whiteness of the photoreceptor, it is difficult to improve sensitivity and there is a limit to speeding up image formation and readout. Furthermore, there are disadvantages such as low dispersion stability of the colorant and high cost as the photoreceptor cannot be reused since no transfer is performed. It is only applied to limited uses such as

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an image forming method that is low cost, has high transfer efficiency, and can form high quality images at high speed.

[Means to solve the problem]

The present invention is proposed to achieve the above object.

That is, the image forming method according to the first aspect of the present invention develops an electrostatic latent image on a photoreceptor using a developer that is solid at room temperature and reversibly repeats heating and cooling solidification. 4) is characterized in that it is transferred onto a transfer target.

The image forming method according to the second aspect of the present invention is characterized in that the transfer is performed by contact between the photoreceptor and the transfer target when the developer is heated and melted.

Furthermore, the image forming method according to the third aspect of the present invention includes:
The image forming apparatus is characterized in that the above-mentioned transfer is performed by pressure contact between a photoreceptor and an object to be transferred when the above-mentioned developer is cooled and solidified.

The image forming method of the present invention is based on the premise that an electrostatic latent image is first formed and developed on a photoreceptor.

First, the method for forming and developing this electrostatic latent image will be explained with reference to FIG. For convenience, this figure is shown assuming that each step is sequentially applied to a long photoreceptor (3). First, in the charging step, the photoreceptor (3) is charged with a corona discharger (12).
), etc., for example, to uniformly charge it negatively. In the next exposure step, selective light irradiation corresponding to the image information is performed using a suitable exposure means such as a semiconductor infrared laser light source (13), and the negative charge on the exposed area is eliminated. Here, as the photoreceptor (3), a well-known organic photoconductor or inorganic photoconductor can be used.

For example, organic photoconductors can be selected from a wide range of well-known materials, and the ones that have been put into practical use include poly-N-vinylcarbazole and 247-dolinitrofluoren-9-one. Photographic photosensitive substrates, poly-N-vinylcarbazole sensitized with biryllium base dyes, poly-N-vinylcarbazole sensitized with cyanine dyes, electrophotographic photosensitive substrates containing organic pigments as the main component, Examples include electrophotographic photosensitive substrates mainly composed of eutectic complexes consisting of dyes and resins. Inorganic photoconductors include zinc oxide, zinc sulfide, cadmium sulfide, selenium, selenium-tellurium alloy, selenium-arsenic alloy, selenium-tellurium-
Examples include arsenic alloys and amorphous silicon-based materials.

In the next developing step, the photoreceptor (3) on which the electrostatic latent image has been formed as described above passes over the developing tank (14). Inside the developing tank (14), there is an electrostatic latent image developer (hereinafter referred to as developer) in which positively charged colorant particles (16) are dispersed in an electrically insulating organic substance (15) that is solid at room temperature.
4). ), and the developer (4) is heated and melted by the heating means (17) and is in a liquid state.

The developer (4) is stored in the developer tank (1) as described above.
4), or may be held on some kind of support to form a sheet or tape, which further improves handling properties.

Here, the melting point of the electrically insulating organic substance (15) is set to be 30°C or higher in consideration of the normal usage environment and ease of handling,
More preferably, the temperature is 40°C or higher. The upper limit of the melting point is not particularly defined, but practically it is around 100°.
The temperature is more preferably 80°C or less than C1.

This means that even if the melting point is too high, extra energy will be consumed for heating, and that when used while being held on a support, it must not exceed the heat-resistant temperature of the material commonly used as the support. This was taken into consideration.

Materials that meet these requirements include paraffins, waxes, and mixtures thereof. First, as paraffins, there are various normal paraffins having 19 to 60 carbon atoms, ranging from nonadecane to hexaconcune. In addition, waxes include plant waxes such as carnauba wax and cotton wax;
Examples include animal waxes such as beeswax, osichelite, and petroleum waxes such as paraffin wax and microcrystalline wax 1 petrolatum. These materials generally have a dielectric constant of 1.9 to 2.
．． It is a dielectric material of about 3.

Furthermore, long alkyl groups are added to the side chains of polyethylene, polyacrylamide, and polyacrylate homopolymers or copolymers (e.g., copoly-n-stearylacrylate-ethyl methacrylate) such as poly-n-stearylacrylate and poly-n-stearyl methacrylate. It is also possible to use crystalline polymers having the following properties, but the above-mentioned paraffins and waxes are preferable in consideration of viscosity upon heating.

Furthermore, as the colorant particles (16) dispersed in the electrically insulating material (15), conventionally known inorganic pigments, organic pigments, dyes, and mixtures thereof can be used.

Examples of inorganic pigments include chromium pigments, cadmium pigments, iron pigments, cobalt pigments, ultramarine blue, and navy blue. In addition, organic pigments and dyes include Hansa Yellow (C, 1, 11680), Benzidine Yellow G
(C,1,21090), benzidine orange (C,1,
, 211to), First Trend (C, 1,370
85), brilliant carmine 3 B (C,1,1
6015-Lake), Phthalocyanine Blue CC, [
74160), Victoria Blue (C, 1,4259
5-Lake), Spirit Black (C, 1,50
415), Oil Blue (C,T, 74350), Alkaline Blue (C,1,4277OA), Fast Scarlet (C,!, 12315), Rhodamine 6 B (C,1,45160), Rhodamine Lake (C,1 , 45160-Lake), Fast Sky Blue (C, 1,74200-Lake), Nigrosine (C, 1,50415), and carbon blank.

These can be used alone or as a mixture of two or more, and those having the desired color development may be selected and used.

In addition to the electrically insulating organic substance (15) and colorant particles (16), the developer may also contain a resin for the purpose of improving the dispersibility and fixing properties of the colorant. Known materials can be appropriately selected and used as the resin that can be used. Examples include rubbers such as butadiene rubber, styrene-butadiene rubber, cyclized rubber, and natural rubber, styrene resins, vinyltoluene resins, and acrylic resins. , synthetic resins such as methacrylic resins, polyester resins, polycarbonate resins, and polyvinyl acetate resins, alkyd resins including modified alkyds such as rosin resins, hydrogenated rosin resins, linseed oil modified alkyd resins, and polyterpenes. Examples include natural resins such as . In addition, phenolic resins, modified phenolic resins such as phenol-formalin resin, pentaerythritol phthalate, coumaron-indene resins, ester gum resins, vegetable oil polyamide resins, etc. are also useful, and polyvinyl chloride, chlorinated 2. Halogenated hydrocarbon polymers such as polypropylene, synthetic rubbers such as vinyltoluene-butadiene, butadiene-isoprene, etc.
- Polymers of acrylic monomers with long chain alkyl groups such as ethylhexyl methacrylate, lauryl methacrylate, stearyl methacrylate, lauryl acrylate, octyl acrylate, or copolymers of these with other polymerizable polymers (for example, styrene-lauryl (methacrylate copolymer, acrylic acid-lauryl methacrylate copolymer, etc.), polyolefin II such as polyethylene, polyterpenes, etc. can also be used.

Furthermore, a charge donor is usually added to the developer,
The developer used here is no exception. The charge-donating agents used are, for example, metal salts of fatty acids such as naphthenic acid, octenoic acid, oleic acid, stearic acid, isostearic acid or lauric acid, metal salts of sulfosuccinic acid esters, oil-soluble sulfonic acid metal salts, and phosphoric acid esters. These include metal salts, metal salts such as abietic acid, aromatic carboxylic acid metal salts, aromatic sulfonic acid metal salts, and the like.

Moreover, in order to improve the electrostatic charge of the colorant particles (6), S i O,, AE, Oh, T i O,, Zn○
Ga, Off, Inzox, Ge0z, 5nOz
Fine particles of metal oxides such as Pb0g and MgO or mixtures thereof may be added as a charge enhancer.

Regarding the blending ratio of each component described above, it is preferable that the colorant particles (16) be in an amount of 0.01 to 100 g, more preferably 0.1 to 100 g, based on the molten LJi11 of the electrically insulating organic substance (15). It is log. Also, the charge donor is l
Usually 0.001 to 10 g, preferably 0.0 to β
It is in the range of 1 to 1 g. Further, the charge enhancer is added in an amount of at most twice the weight of the colorant particles (6), preferably at most the same amount.

The above-mentioned developer is heated by the heating means (17) to be in a molten state, and the heating temperature may be appropriately set depending on the melting point, etc., and is usually 30-130''C1, preferably 40-110''C1. It is assumed to be °C.

When this liquefied developer (4) comes into contact with the photoreceptor (3), the positively charged colorant particles (16)
) migrates toward and attaches to negatively charged sites.

Finally, in the fixing step, the colorant particles (6) adhering to unnecessary portions are removed, and the electrostatic latent image is developed on the photoreceptor (3) through a static elimination step.

Note that the photoreceptor (3) on which the electrostatic latent image has been developed as described above
Not only the colorant particles (16) but also some electrically insulating organic matter (15) are attached on the top. The electrostatic latent image developed as described above is recorded and immediately visible.
For storage, it is transferred onto a suitable recipient. Transfer methods at this time include (a) a method in which a heating means is provided on a stage that supports the photoreceptor (3), and the developer (4) is brought into contact with the transferred material while being heated and melted; or (b) development A conceivable method is to bring the material into pressure contact with the transfer target using a roller or the like while the agent is cooled and solidified.

In the case of method (a) above, the heating temperature of the photoreceptor (3) may be set as appropriate depending on the type, characteristics, etc. of the photoreceptor, but it must be at least the temperature at which the developer (4) becomes liquid. It is preferable. Usually from room temperature to 130'C2, preferably 30
~110°C.

Here, the material that can be used as the transfer target can be appropriately selected depending on the purpose as long as it can be impregnated with the above-mentioned electrically insulating organic substance to some extent. Examples include natural paper, various papers such as synthetic paper, cloth or nonwoven fabric made of vegetable fibers such as cotton and hemp, animal fibers such as silk and wool, and organic synthetic materials such as boilyamide, polyester, polyacetal, and polyurethane. These include cloth or nonwoven fabric made of inorganic fibers such as fibers, ceramics, and carbon, menschs made of metals, organic polymers, etc., and polymer foams such as polyurethane foam. In order to preserve the document in the form of a normal document, it is preferable to use blank paper or the like as the transfer medium 2 from the viewpoint of improving visibility, but of course this is not restrictive.

Note that the image forming method according to the present invention is not limited to forming a monochrome image, but can also be applied to forming a full-color image using, for example, yellow, magenta, and cyan color developers. In this case, the light development method may be repeated for each color developer, and the order of development may be selected depending on the type of light source used during exposure. For example, when an infrared laser is used, the order is yellow → magenta → cyan, and when ultraviolet light is used, the order is yellow → magenta → yellow. Further, if necessary, ink may be inked with black, and the development of this blank may be performed at an appropriate location of the development of each color.

[Effect]

In the image forming method according to the present invention, a developer is used in which colorant particles are uniformly dispersed in an electrically insulating material that is solid at room temperature.

When this electrostatic latent image developer is used, it is kept in a molten state by a suitable heating means, and when it comes into contact with a photoreceptor on which an electrostatic latent image has been formed, the colorant particles become electrically charged toward the electrostatic latent image developer. is electrophoresed, and selective IR development is performed. here,
Since the color saving agent particles migrate along with a small amount of the electrically insulating organic material which is the dispersion medium, the two are attached to the light emitter in a mixed state, that is, as a developer. Therefore, if the photoreceptor is maintained at a predetermined temperature using an appropriate heating means, the developer can be kept in a molten state even after development. In this state, when the photoreceptor is brought into contact with a suitable transfer object, the image developed on the photoreceptor is transferred onto the transfer object.

Alternatively, even if the developer is in a cooled and solidified state,
An image can be similarly transferred onto a transfer target by contacting it with a roller or the like while applying an appropriate pressure.

In any case, the developer used in the image forming method of the present invention has a moderate adsorption power to the photoreceptor, so it is difficult to use the conventional N and V development methods. The image on the other transferred object is efficiently transferred, making it possible to form a high-quality image at high speed.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described.

First, the 41 components of the developing device used in this actual collaboration will be explained.

This developing device has an electrostatic latent image forming section and a developing section, which are housed in an intermediate tank (21) as shown in the fourth circle. (3) is held and the f:f/chip (1) is moved along the guide shaft (24) to perform the entire process from charging and exposure to development.

Note that the stage (1) that holds the photoreceptor (3) is provided with a heating means (2), and the M? The photoreceptor) can be heated to a predetermined temperature.

The electrostatic latent image forming section is further divided into a charging section and an exposure section, and in the charging section, the entire surface of the photoreceptor (3) is charged with, for example, a negative charge by a charger (26).

The exposure part consists of a laser diode (27) and a lens (2B).
), a reflecting mirror (29), and other optical systems, and serves to selectively expose the photoreceptor (3), which is entirely charged, in a manner ()R according to the signal, and to remove the electrical charges on this portion.

On the other hand, the developing section consists of developing tanks (30131) (32) containing three types of developer corresponding to full color development, each of these developing tanks (30) (31),
<32) are arranged in sequence in the extending direction of the guide rods (2, 4) in an air tank (34) in which a blow fan (33) is installed.

Each developing tank (30), (31), (32) is stirred! First tank (30a) (31a) (32a) provided with P mechanisms (35), (36), (37)
and a second tank (30b) (31b) that covers the outside.
), (32b), and at the bottom there are IID heating means (38), (39), (40), respectively.
is provided.

And each of these developing tanks (30) and (31)
, (32) developer (41), (4
2) and (43) are heated and melted into a liquid by the heating means, and at the time of development, the first tank (
30a), (31a), (32a>)
The liquid is slightly blown up through the slits (44a), (45a), and (46a) provided in 44), (45), and (46), and comes into contact with the photoreceptor (3).

In addition, each developing tank (30), (31,), (32
) is blocked by air blown out from the air squeeze part (34a) provided in the air tank (34).
This prevents color mixing.

At the rear of the developing section, a static eliminator (47) is provided to remove unnecessary charges.

In the developing device having such a configuration, the entire surface of the photoreceptor (3) is first charged with a negative charge by the charger (2G).

Next, this photoreceptor (3) is selectively exposed to light by an exposure section, and the electrical charges in the exposed portion are released to form a predetermined electrostatic latent image.

Next, the photoreceptor (3) moves along the guide rod (24) while being heated to a position facing the developing tank (30), and is developed with the developer in the developing tank (30).

Thereafter, it moves to the position of the static eliminator (47), and unnecessary charges are removed.

Then, the photoreceptor (3) moves again to the electrostatic latent image forming section, and similarly charges, exposes, develops in the developing tank (31), charges neutralizes, charges, exposes, develops in the developing tank (32), and eliminates static electricity. A full color image is formed through these steps.

Using the developing device having the above configuration, each developing tank (3
0), (31), (32) with the following developer A~
An attempt was made to form a full color image by adding developer C.

I, (L elbow A This developer is a cyan electrostatic latent image developer.

First, 0.625 g of Lionor Blue KXFl (manufactured by Toyo Ink Co., Ltd.) as a colorant and 0.5 g of an isoparaffinic solvent (manufactured by Idemitsu Oil Co., Ltd., trade name: I P2825) were kneaded by the Zuber-Mercy method until it became a paste. , the colorant was made into small particles. Next, this paste was mixed with another isoparaffinic solvent (manufactured by Esso, trade name: Isopar H).
), 0.05 g of alumina fine particles (manufactured by Nippon Aerosil Co., Ltd., trade name: Aluminum Oxide C) was added as a charge enhancer, and a dispersion treatment was carried out together with alumina beads in a paint shaker for 12 hours. Furthermore, acrylic resin (manufactured by Mitsubishi Rayon Co., Ltd., product name FRIO)
0.5 g of a 50% toluene solution of I) and 0.025 g of zirconium naphthenate and 0.025 g of calcium naphthenate, which serve as charge-donating agents, were added to obtain a concentrated developer.

Next, 120 mj2 of paraffin having a melting point of 42 to 44°C was melted in advance at 70°C, and 5 ml of the above concentrated developer was dispersed therein to prepare a cyan electrostatic latent image developer.

Current 1U hitter This developer is a yellow electrostatic latent image developer.

First, the colorant Shimieror Fast Yellow 8
CF (manufactured by Dainippon Ink Co., Ltd.) 0.5 g and isoparaffinic solvent (manufactured by Idemitsu Oil Co., Ltd., trade name I P2825)
0.5 g was kneaded by the Zuber-Mercy method until it became a paste, and the colorant was made into small particles. Next, this paste was dispersed in 50 mL of another isoparaffinic solvent (manufactured by Enoso Co., Ltd., trade name Isopar H), and ultrafine particulate anhydrous silica (manufactured by Nippon Aerosil Co., Ltd., trade name Aerosil 200) was added as a charge enhancer. 01 g was added and a dispersion treatment was performed for 18 hours in a paint shaker with glass beads. Below, all? ! The developer and electrostatic latent image developer were adjusted in the same manner as in the case of developer A.

First, the colorant Shimierr Rhodamine Y Toner F
(manufactured by Dainippon Ink Co., Ltd.) 0.8g and linseed oil 0.5g
The mixture was kneaded by the Zuber-Mercy method until it became a paste, and the colorant was made into small particles.

Next, this paste was dispersed in 50 ml of another isoparaffinic solvent (manufactured by Enso, trade name: Isopar H), and a dispersion treatment was performed for 18 hours in Paint No Acre together with glass beads. Hereinafter, the adjustment of the 4-condensation developer and the electrostatic latent image developer was carried out in the same manner as in the case of the developer.

On the other hand, as a photoreceptor (3), a sheet (50 μm thick) made of a modified vinyl acetate resin is coated with 1 g of polyvinyl pyrohydrazur as a photosensitizer and a cyanine dye (manufactured by Nippon Kanko Shiki Co., Ltd., trade name NK2982) as a sensitizer. 0.2 m
A photosensitive layer (layer thickness: 200 μm) containing g was used.

Current”C■q This developer is a magenta electrostatic latent image developer.

Example 1 An electrostatic latent image developed using the above-mentioned developing device, each developer, and a photoreceptor was heated and molten by bringing the photoreceptor and the transferred object into contact with each other. An attempt was made to transfer the image onto a transfer target.

This transfer process is shown in Figures 1 (A) to 1 (C).
Shown below.

First, as shown in FIG. 1(A), selectively apply the developer (4).
The photoreceptor (3) on which the electrostatic latent image has been developed is brought into contact with a transfer object (5) such as a passing sheet.

At this time, the photoreceptor (3) is heated to a predetermined temperature by a developer (2) built into the stage (1), and thereby the developer (4) is maintained in a heated and molten state. . Therefore, as shown in FIG. 1(B), when the transfer target (5) comes into contact with the developer (4), the developer (4) easily transfers onto the transfer target (5), and some of it penetrates into the inside of the transfer target (5). . Next, as shown in FIG. 1(C), when the transfer object (5) is separated from the photoreceptor (3), the transfer is completed, and the transfer object (5) is separated from the photoreceptor (3).
) on which the image is formed.

Through such operations, it was possible to form a high quality image with excellent gradation and resolution with good transfer efficiency. Furthermore, since a full-color image can be formed at once without repeating independent transfer processes for each of the three primary colors, image formation is also rapid. Note that the photoreceptor (3) after transfer can be used repeatedly.

Example 2 In this example, an image was transferred onto a transfer target by bringing the photoreceptor and the transfer target into contact with each other while the developer was in a cooled and solidified state.

The developing device, each developer, and the photoreceptor used in this example are the same as those used in Example 1.

This transfer process is shown in Figures 2 (A) to 2 (C).
Shown below.

First, as shown in FIG. 2(A), selectively apply the developer (4).
The photoreceptor (3) on which an image has been formed is brought into contact with a transfer target (5) such as IIWL, for example.

At this time, since the developer (4) is in a cooled and solidified state, as shown in FIG. ) are in close contact with each other. Next, as shown in FIG.
) is transferred onto the transfer target (5), and the image transfer is completed.

The results were excellent as in Example 1.

In each of the above embodiments, the case where a full-color image is formed has been described, but it goes without saying that the present invention can also be applied to the formation of a monochrome image.

[Effects of the Invention] As is clear from the above explanation, if the image forming method according to the present invention is used, efficient transfer can be performed even by wet development, and high-quality images with excellent gradation and resolution can be achieved. A quality image is formed.

Furthermore, since the photoreceptor after transfer can be used repeatedly, it is more economical than conventional methods such as Electrofunx, which do not involve transfer.

[Brief explanation of the drawing]

FIG. 1(A) to FIG. 1(C) are schematic diagrams schematically showing the transfer process in the order of steps in an embodiment to which the present invention is applied, and FIG. 1(A) shows the photoreceptor and the cover. The contact stage of the transfer body, FIG. 1 (B) is the developer transfer stage,
FIG. 1(C) shows the stages of peeling off the photoreceptor and the transfer target, respectively. 2M(A) to 2(C) are schematic diagrams schematically showing the transfer process according to the step order in another embodiment to which the present invention is applied, and FIG. 2(A) shows the photoreceptor and the cover. FIG. 2(B) shows the stage of contact of the transfer member, FIG. 2(B) shows the stage of transfer of the developer by the pressure means, and FIG. 2(C) shows the stage of separation of the photoreceptor and the transferred member. FIG. 3 is a schematic diagram for explaining the principle of an electrostatic latent image developing method which is a pre-stage of the transfer process. 40 is a schematic diagram schematically showing the configuration of the developing device used in the example. 1... Stage 2... Heater 3... Photoconductor 4... Developer 5... Transferred object 6... Roller Figure (A) Figure 1 (B) Figure 1 (C ) Diagram 2 (A) Diagram 2 (B) Diagram 2 (C) Procedural master's letter (spontaneous) March 31, 1999 Director General of the Japan Patent Office Yoshi 1) Moon Yi ■, case display 1988 Year Patent Application No. 232268 2, Name of the invention Image forming method 3, Relationship with the case of the person making the amendment Patent distributor address 6-7-35, Kitashina, Tokyo Parts Ward Name (21
8) “Nojiichi Co., Ltd. Representative Norio Oga 4, Agent address 11, 2-6-4 Toranomon, Minato-ku, Tokyo 105
Mori Building 11th floor h (508) 8266 f/l)7
, Contents of the amendment (1) From page 22, line 12 of the specification to line 17 of the cylinder on the same page, it is stated that ``On the other hand, as the photoreceptor (3), one formed of... was used.'' Change the description to “On the other hand, photoreceptor (3)
As for polyethylene terephthalate film (thickness 1
25 μm) and an ITO layer (thickness 0.2 μm) as a transparent electrode.
The photosensitive layer (film thickness: 8 μm) was laminated with a photosensitive layer (film thickness: 8 μm) interposed therebetween and modified vinyl acetate resin N (film thickness: 2 μm). The photosensitive layer contained 1 g of polyvinylcarbazole as a photosensitizer, and cyanine dye (manufactured by Nippon Kanko Shiki Co., Ltd.) as a sensitizer.
Product name NK2892) Contains 2ff1g. ”
and correct it. that's all

Claims (3)

[Claims] (1) An image forming method characterized by transferring an electrostatic latent image developed on a photoconductor using a developer that is solid at room temperature and reversibly repeats heating and melting and cooling and solidification onto a transfer target. . (2) The image forming method according to claim 1, wherein the transfer is performed by contact between a photoreceptor and a transfer target when the developer is heated and melted. (3) The image forming method according to claim 1, wherein the transfer is performed by pressure contact between a photoreceptor and a transfer target when the developer is cooled and solidified.