JPH0820683B2 - Image forming device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document image forming apparatus, and more particularly to an image forming apparatus capable of forming images by different methods with a single apparatus.

<Prior Art and Problems Thereof> As an image forming apparatus for a color original, there are known a color electrophotographic method, a silver halide color photographic method, and a photosensitive pressure-sensitive color material method.

In the color electrophotographic method, a color original is generally exposed by using a blue, green or red color separation filter to form an electrostatic latent image on a charged photoconductor, and then this latent image is transferred to yellow, magenta or cyan. After developing with the color toner of, and then transferring the color toner image to the transfer paper,
After fixing, a similar process is repeated for each color to reproduce a color image.

In the silver halide color photographic system, a color image is reproduced by using a certain kind of silver halide color light-sensitive material.

In the photosensitive pressure-sensitive color material system, a color image is reproduced using a photosensitive pressure-sensitive color photosensitive material.

Examples of the light-sensitive and pressure-sensitive color light-sensitive material include, for example, Japanese Patent Application Laid-Open No. 57-179836 filed by the present applicant, which cures a polymerizable compound in an imagewise manner by exposure, and then applies pressure to make it visible. There is a type that gets a statue. In this material, a synthetic polymer resin wall capsule containing a vinyl compound, a photopolymerization initiator and a colorant precursor is supported on a support.

Further, after the silver halide is contained and exposed to light, heat development is performed to develop the silver halide, and the polymerizable compound is simultaneously cured corresponding to the development, and then pressure is applied to obtain a visible image. As a type, Japanese Patent Application No. 60-121284 or Japanese Patent Application No. 61-53881 filed by the applicant.
There are materials disclosed in the specification.

The material disclosed in Japanese Patent Application No. 60-121284 is a material for obtaining an image on an image-receiving material by transferring a color image-forming substance to the image-receiving material having an image-receiving layer after being subjected to heat development. At least a light-sensitive silver halide, a reducing agent, a polymerizable compound and a color image forming substance are coated, and at least the polymerizable compound and the color image forming substance are encapsulated in the same microcapsule. .

Further, the material disclosed in Japanese Patent Application No. 61-53881 obtains an image on a light-sensitive material without using an image-receiving material, and the silver halide, a reducing agent, a polymerizable compound, and a color-forming reaction in a contact state. Including the two types of substances that cause a color reaction, one of the substances that cause a color reaction and the polymerizable compound are in a state of being contained in a microcapsule, and the other of the substances that cause a color reaction include a polymerizable compound. Of the microcapsules present on the support.

For how to obtain an image using this photosensitive material,
It is disclosed in Japanese Patent Application No. 60-121284.

In this image forming method, first, a latent image is formed by performing imagewise exposure, and a polymerizable compound in a portion where the latent image is present is polymerized by heating or light energy at the time of forming the latent image to form a polymer compound. To cure the microcapsules. Then, pressure is applied to the image receiving material having an image receiving layer to which the color image forming substance can be transferred, and at least a part of the microcapsules where the latent image does not exist are ruptured to transfer the color image forming substance to the image receiving material. To obtain an image on the image receiving material.

In order to obtain a color image by the color electrophotographic method, steps of charging, exposing, developing, transferring and the like are repeated at least three times, so that it takes time to form an image, and the apparatus becomes complicated and large. In addition, it is difficult to obtain a color image due to the superposition of at least three color toner images or to obtain a clear line image such as a character.

In the silver halide color photographic method, one exposure is required, but complicated wet processing steps such as development, bleaching, fixing, and washing of the photosensitive material must be performed. A tank for storing the liquid is required, which increases the size of the apparatus, and also requires complicated maintenance such as replenishment and replacement of the processing liquid.

In order to solve the problems of these color electrophotographic system and silver halide color photographic system, the above-mentioned light and pressure sensitive color material system has been proposed in order to obtain a color image with a simple structure.

However, in the conventional image forming apparatus for color originals including this method, it is not possible to obtain a high density and sharp image of character contour lines. For this reason, there is a need for a coupling device that couples a plurality of image forming devices such as an image forming device for color originals and a monochrome electrophotographic image forming device for images of characters and lines, and the applicant of the present invention is Japanese Patent Application No. Sho 62-187831. The issue is proposed to that effect.

However, in the combination device of the image forming apparatus for color original document and the image forming apparatus for character equal-line image, the original reading unit is common, but the exposure unit is a digital image using a laser optical system. Since the exposure apparatus is provided for each, the apparatus as a whole is inevitably large and expensive. Furthermore, when an analog type image exposure apparatus is used, an optical fiber or the like must be used as an exposure path, which makes the apparatus expensive and complicated.

<Objects of the Invention> An object of the present invention is to solve the above-mentioned problems of the prior art, and images of two or more different image forming methods by one device, for example, a color image with good color reproduction, An object of the present invention is to provide a small-sized image forming apparatus which can obtain a line image of characters and the like having high density and good sharpness and which is inexpensive, has a simple structure.

<Brief Description of the Invention> A first aspect of the present invention is an image forming apparatus which directly exposes an original image on a photosensitive material to form an image, and comprises a slit scanning exposure system and the exposure of the slit scanning exposure system. Route 2
According to the image to be formed, it has a unit for branching as described above and a plurality of image forming units arranged in front of each of the branched exposure paths and carrying out an image forming method corresponding to different photosensitive materials. The image forming apparatus is characterized in that an image is formed by an image forming unit.

Further, it is preferable that the plurality of image forming means share an imaging lens and have the same conjugate length.

Further, it is preferable that the exposure path is branched by a half mirror.

Further, it is preferable that the image forming method is a color image forming method in which a latent image or a visible image is formed in an image form by utilizing a chemical reaction, and a monochrome electrophotographic image forming method.

In the color image forming method, it is preferable to use a silver halide photosensitive material as the photosensitive material.

In the color image forming method, it is preferable to use a photosensitive resin material as the photosensitive material.

In the color image forming method, it is preferable to use a light and pressure sensitive material as the light sensitive material.

A second aspect of the present invention is an image forming apparatus that directly exposes an original image on a photosensitive material to form an image, and includes a slit scanning exposure system and an exposure path of the slit scanning exposure system.
An image corresponding to an image to be formed is provided, which has a unit for switching the above and a plurality of image forming units arranged in front of each of the switched exposure paths and performing an image forming method corresponding to each different photosensitive material. The image forming apparatus is characterized in that an image is formed by a forming unit.

Further, it is preferable that the plurality of image forming means share an imaging lens and have the same conjugate length.

Further, it is preferable to switch the exposure path by moving a mirror provided in the exposure path.

Further, it is preferable that the image forming method is a color image forming method in which a latent image or a visible image is formed in an image form by utilizing a chemical reaction, and a monochrome electrophotographic image forming method.

In the color image forming method, it is preferable to use a silver halide photosensitive material as the photosensitive material.

In the color image forming method, it is preferable to use a photosensitive resin material as the photosensitive material.

In the color image forming method, it is preferable to use a light and pressure sensitive material as the light sensitive material.

<Specific Configuration of the Invention> In the present invention, it is possible to obtain a clear color image and a sharp character contour image with one device. The color image of the original can be obtained as a color image with good color reproduction by a color image forming method that forms a latent image in an image using a chemical reaction. The method is configured so that an image with high density and good sharpness can be obtained. Moreover, since the image information of the original document is directly exposed to the light-sensitive material which is subjected to each image forming method, a clear and high-quality image can be obtained. In addition, a half mirror is arranged in the exposure path to the photosensitive material and the exposure path is branched so that the respective photosensitive materials can be directly exposed at the same time, or a movable mirror is used to move the mirror. By making it possible to switch and select the exposure path so as to expose the photosensitive material, it is possible to obtain an image forming apparatus that is small in size, has a simple structure, and is inexpensive.

Note that the image forming apparatus of the present invention normally selects each image forming method and performs one image forming method independently, but it is also possible to form a monochrome electrophotographic image again after forming a color image. And vice versa.

The color image forming method is not particularly limited, but a color image forming method of forming a latent image or a visible image in an image form by utilizing a chemical reaction is preferable, for example, a method using a silver halide photosensitive material as a photosensitive material, Examples thereof include a method using a photosensitive resin material and a method using a photosensitive pressure-sensitive material.

Hereinafter, the image forming apparatus of the present invention will be described in detail with reference to the accompanying drawings, with reference to preferred embodiments in which a photosensitive pressure-sensitive material is used as a photosensitive material and a heat developing step is included.

FIG. 1 is a sectional view of an image forming apparatus according to an embodiment of the present invention.

As shown in FIG. 1, this image forming apparatus basically includes an image forming optical system 200, a photosensitive material supply unit 12, and a heat developing device 40.
A transfer device 88 and a monochrome electrophotographic image forming device 500.
It consists of and.

A document table 2 made of a transparent glass plate or the like for supporting a document placed thereon is attached to the upper part of the housing 1. An imaging optical system 200 is arranged below the document table 2 and is shielded from other parts by the partition wall 3.

The image forming optical system 200 may be configured by a known image forming lens moving type image forming optical system. That is, as shown in FIG.
The imaging optical system 200 includes an illumination lamp 208 and a mirror 210 that integrally scan the entire lower surface of the document table 2 formed of a glass plate or the like,
Mirrors 212 and 214 that move in the same direction at a speed half that of the illumination lamp 208 and reflect the light of the illumination lamp 208 in a predetermined direction.
And an imaging lens 220 and a mirror 21 for reflecting the light adjusted by the imaging lens 220 to the exposure position 34 on the monochrome electrophotographic side.
6. A half mirror 250 that distributes the light reflected by the mirror 216 to the color image forming apparatus side, and a mirror 218 that reflects the light distributed by the half mirror 250 to the color image side exposure position 32.

That is, in this case, the exposure path is branched by the half mirror 250 into the exposure path 264 on the monochrome electrophotographic image forming apparatus side and the exposure path 262 on the color image forming apparatus side, and the monochrome electrophotographic photoreceptor 510 and the color image forming apparatus are formed. That is, the photosensitive material S is exposed at the same time.

A photosensitive material magazine 14 accommodating a photosensitive material roll 12 around which a heat-developable color photosensitive material S (hereinafter referred to as photosensitive material S) is wound is detachably attached to the side portion of the housing 1. Exit of the photosensitive material S of the photosensitive material magazine 14
A pair of sensitive material feeding rolls 22 and 22 housed in a magazine-connected dark box 20 are arranged in the 16 so that the sensitive material roll 12
The photosensitive material S wound around is rolled out for a certain length at a predetermined time.

When the leading end of the photosensitive material S advances, the photosensitive material rolls 22, 22 move away from each other as indicated by imaginary lines, thereby facilitating the advance of the photosensitive material S. A cutter unit 23 for cutting the photosensitive material S and a guide plate 24 are arranged in front of the magazine connection dark box 20 (hereinafter, the front side means a downstream side in a traveling direction of the photosensitive material S and the like). .

In front of the guide plate 24, an exposure light-sensitive material support roll 26 and two light-sensitive material nip rolls 28 and 30 pressed against the support roll are arranged. The photosensitive material S guided by the guide plate 24 is
The photosensitive material support roll 26 is exposed by the photosensitive material nip rolls 28 and 30.
Position between the sensitive material nip rolls 28 and 30
In, direct imagewise exposure is performed by the light traveling through the exposure path 262.

In front of the exposure sensitive material support roll 26, a heat developing device 40 for heating and developing the exposed photosensitive material S is arranged.
The heat developing device 40 includes a developing housing 42 having a heat insulating function.
And a heating roller 44 disposed in the developing housing 42 and heated to about 120 ° C. and four belt supporting rollers 46, 47, 4
It has an endless belt 50 supported by 8, 49 and wound around the outer periphery of an arc of about 270 ° of the heating roll 44, and a nip roll 52 pressed against the support roll 49.

The heating and developing device 40 further includes a guide device 54 that guides the photosensitive material S sent from the exposure photosensitive material support roll 26 onto the heating roll 44 and removes the photosensitive material S from the heating roll 44 after the heat development, and a support roll. It has a vertical guide device 58 for guiding the developed photosensitive material S sent by 49 and the nip roll 52 to an outlet 56, and the outlet 56 is provided with a photosensitive material tip detection sensor 60.

Directly below the outlet 56, a pair of pressure contact rolls 62, 64, a nip roll 66 pressed against the pressure contact roll 64, and a pressure contact roll 64.
And a guide member 68 for guiding the image receiving paper C sent by the nip roll 66 to the abutting portions of the pressure contact rolls 62, 64.

An image receiving paper supply device 72 is arranged beside the photosensitive material image receiving paper superposing device 70. The image receiving paper supply device 72 includes the housing 1.
An image receiving paper supply cassette 74 that is detachably attached and protrudes from the image receiving paper, a receiving paper feeding roll 76 for feeding out the image receiving paper C in the cassette 74, and an image receiving paper C fed by the feeding roll 76 under pressure. 64 and nip roll
The guide plate 78 guides to the contact portion of 66. Here, the width of the image receiving paper C is about 6 mm wider than the width of the photosensitive material S.
In the small-sized photosensitive material image receiving paper superposing device 70, the image receiving paper C is superposed so as to be in the center of the photosensitive material S in the width direction. Here, as the image receiving paper C, any material that can transfer an image carried by the photosensitive material S under pressure can be used, and examples thereof include cut sheets, roll paper, and overhead projector paper.

A pair of pressure nip rolls 80 and 82 and a backup roll for equalizing the pressure nip rolls 80 and 82 in the pressure axis direction are provided below the photosensitive material image receiving sheet superposing device 70.
A transfer device 88 including 84 and 86 is provided. The pressure nip rolls 80 and 82 are pressed against each other by a pressure of about 200 to 600 kg / cm ² .

Below the transfer device 88, a photosensitive material image receiving paper peeling device 90 is provided. The photosensitive material image receiving paper peeling device 90 includes a guide member 92 and a first member.
Feed roll 94, second feed roll 96, and first feed roll
The peeling belt 102 is wound around the guide rolls 98 and 100 so as to press only the photosensitive material S at both outer end portions on the 94.
Have and.

A photosensitive material discarding unit 104 is provided in front of one of the peeling devices 90, and a monochrome electrophotographic image forming apparatus 500 is provided in front of the other.
Is provided.

The sensitive material discarding unit 104 includes guide members 108, 115, 116, 117,
The peeling device 90 has two pairs of feed rolls 107, 109 and 110, 112, guide rolls 105, 106, and a waste box 114.
Material S sent from the sheet and guided by the guide member 108
Guide roll 105, feed rolls 107, 109, guide roll 1
Waste box 11 fed by rolls 110, 112 fed through 06
It is thrown into 4.

The monochrome electrophotographic image forming apparatus 500 is a drum-shaped photoreceptor 510 coated with an organic photoconductive material having a peak in the vicinity of 780 nm as spectral sensitivity, and a charger 512 for charging the photoreceptor 510 with electric charge. A magnetic brush type toner developing device 514 for developing an electrostatic latent image like an image formed on the photoconductor 510 by exposure with toner, and for transferring the toner image on the photoconductor 510 to the image receiving paper C. Transfer charger 516, a cleaner 518 for removing the residual toner on the photoconductor 510 after the transfer, an exposure lamp 519 for removing the residual charge of the photoconductor 510, and the image receiving paper C for the photoconductor 510. Separation roll 524 for separating from the feed rolls 506 and 508, and image receiving paper C
The photoconductor 510 rotates in the direction of the arrow in the figure and is sequentially charged by the charger 512, and the exposure path 264 at the exposure position 34.
Directly imagewise exposed to the light that has traveled to form an electrostatic latent image and then developed by a toner developing device 514 to form a toner image on the photoconductor 510.

The image receiving paper C sent through the peeling device 90 is a sending roll 96.
Guide member 120, a pair of feed rolls 121a, 121b, registration rolls 122, 124 match the timing for transfer with the photoconductor 510, and are sent out and guided by guide members 504, 505. At the same speed as the outer peripheral speed of the body 510, it is sent along the outer periphery of the photoconductor 510 and brought into close contact with the toner image on the photoconductor 510 so that the toner image on the photoconductor 510 is received by the transfer charger 516. It is transferred onto C and separated from the photoconductor 510 by the separation roll 524,
Then, the image receiving paper C is guided by the guide member 525 to the heating roll 530 arranged in front of the photoconductor 510, and the toner image on the image receiving paper C is heated and fixed.

In front of the heating roll 530, a take-out tray 130 that receives the image receiving paper C is attached so as to project from the housing 1. The image receiving paper C is fed by the feed rolls 126 and 128 to the tray 130.
Sent to.

The photoconductor 510 may be not only the organic photoconductive substance described above but also an inorganic photoconductive substance.
4 may be a cascade method as well as a magnetic brush method.

As another aspect of the present invention, as shown in FIG. 2, instead of the half mirror 250, a movable total reflection type mirror 255 is used, and the movement of the mirror 255 causes an exposure path 26.
The exposure path may be switchable so that 2,264 can be selected.

In this case, when the color image forming apparatus is selected, the mirror 255 is installed at the position shown by the solid line in the same manner as the half mirror 250, and the original image is reflected along the exposure path 262. Further, when selecting monochrome electrophotography, the mirror 255 is moved to the position of the broken line 255 ′ shown in the figure, and the original image is displayed on the exposure path 264.
It should be reflected as if going through.

The method of moving the mirror may be a conventionally known method such as rack and pinion.

Further, in the present embodiment, the copying apparatus of the type that performs thermal development is shown as the light and pressure sensitive color photosensitive material, but when the type that does not perform thermal development is used, the heat developing apparatus 40 is omitted. It becomes a thing.

In the embodiment shown in FIG. 1, a monochrome electrophotographic image forming apparatus 500 is arranged in front of the color image transfer apparatus 88, and a monochrome image is formed after a color image is formed on a predetermined area of the image receiving paper C. Although it was configured as
As in the image forming apparatus shown in FIG. 3, the monochrome electrophotographic image forming apparatus 500 is arranged upstream of the transfer device 88, and a monochrome electrophotographic image is formed on the image receiving paper C before the color image is transferred from the photosensitive material S. Even if an image is formed, the same effect can be obtained.

The image forming apparatus shown in FIG. 3 is exactly the same as the image forming apparatus shown in FIG. 1 except that the transfer order of the color image and the monochrome image is different, and the same reference numerals are given to the same constituent elements, and therefore the description will be omitted. Omit it.

In the example shown in FIGS. 1 and 3, an original is placed on a transparent original table 2 such as a glass plate and fixed, and an image forming optical system 200 having a light source 208 from below the transparent original table 2 is provided. Although the light source moving type for moving and scanning is used, the image forming optical system 200 may be fixed and the document moving type for moving the document table on which the document is placed may be used.

Further, in the examples shown in FIGS. 1 and 3, the example in which the color image and the monochrome image are selectively formed on the image receiving paper C is shown, but the color image is formed on the image receiving paper C and the monochrome image is formed. Can also be formed by transferring it onto plain paper or the like supplied from a separately prepared paper feeding device.

<Specific Action of the Invention> The image forming apparatus of the present invention is basically configured as described above, and its specific action will be described below.

In the apparatus shown in FIG. 1, when color image formation is selected and performed, when the original is placed on the original table 2 face down, the switch is turned on, and the color image formation is instructed, the color photosensitive material S is detected. Rolled from the material magazine 14, cut into a predetermined length by the cutter unit 23, the roll 28,
It is conveyed by being in close contact with the exposure light sensitive material support roll 26 by 30. At this time, the document is illuminated by an illumination lamp 208 that moves in synchronization with the photosensitive material. When illuminating the original on the illumination lamp 208, the illumination lamp 208 and the mirror 210 scan the entire lower surface of the original placing table 2, so that the distance between the illumination lamp 208 and the imaging lens 220 does not change at this time. Mirror 212 and
214 moves in the same direction as illumination lamp 208 and mirror 210 at a speed of 1/2.

The light emitted by the illumination lamp 208 is used for the document table 2
It is reflected by the original placed on the sheet, is reflected by the mirrors 210, 212, 214, and travels toward the imaging lens 220 along a predetermined path. The light adjusted by the imaging lens 220 is reflected by the mirror 216 in a predetermined direction. This light is half mirror 25
It is half-branched by 0, is reflected by the mirror 218 via the exposure path 262, and the photosensitive material S is directly exposed at the exposure position 32. The exposed photosensitive material S is sent to the heating and developing device 40, heated by the heating drum 44, the leading end position is detected by the sensitive material leading edge detection sensor 60 at the exit 56, and sent to the sensitive material image superimposing device 70. When the front end position of the photosensitive material S is detected, the image receiving paper C is also sent from the image receiving paper supply device 72 to the sensitive material image receiving paper superposing device 70, and the photosensitive material S and the image receiving paper C are superposed in a predetermined positional relationship. And sent to the transfer device 88. In the transfer device 88, the color images carried by the photosensitive material S are transferred onto the image receiving paper C by the pressure nip rollers 80 and 82.
The pressure-transferred photosensitive material S and the image receiving paper C are separated by the peeling device 90, and the photosensitive material S is transferred to the photosensitive material discarding section 104.
Is sent to the take-out tray 130 through the inside of the monochrome electrophotographic image forming apparatus 500.

In this case, the monochrome electrophotographic image forming apparatus 500 is normally configured not to operate in response to the above-described color image formation selection instruction, so that the image receiving paper C simply passes through the monochrome electrophotographic image forming apparatus 500. However, if necessary, the monochrome electrophotographic forming apparatus 500 is operated in such a case, and when the image receiving paper C is inserted into the monochrome electrophotographic forming apparatus 500, a monochrome toner image is transferred onto the image receiving paper C. It can also be configured.

On the other hand, when selecting monochrome electrophotographic image formation,
Upon receiving the instruction to that effect, the monochrome electrophotographic forming apparatus 500 operates.

At this time, the original image is reflected by the mirror 216 in the same manner as when the color image formation is selected, then passes through the half mirror 250, and directly exposes the photoconductor 510 at the exposure position 34 via the exposure path 264. At this time, the operation of the apparatus relating to the color light-sensitive material is normally stopped.

In this way, an electrostatic latent image is formed on the photoconductor 510 and then developed to form a monochrome toner image.

At the same time, the image receiving paper C is sent out from the image receiving paper supply cassette 74, and the photosensitive material image receiving and superposing device 70, the transfer device 88,
After passing through the peeling device 90, the timing is adjusted by the resist rolls 122 and 124, and in close contact with the photoconductor 510 in synchronization with the rotation speed of the photoconductor 510. Here, the toner image on the photoconductor 510 is transferred onto the image receiving paper C by the transfer charger 516,
It is heated and fixed by the heating roll 530 and sent to the take-out tray 130.

In the mode in which the mirror 255 can be moved as shown in FIG. 2, an image formation selection instruction causes
The mirror 255 may be moved so that the predetermined exposure paths 262 and 264 can be selected.

Further, in the present embodiment, the color image is transferred onto the image receiving paper C.
After the transfer, the photoconductor 510 may be exposed and a monochrome electrophotographic image may be superimposed on the color image.

 Further, in this case, the image to be exposed may be another image.

The image forming apparatus according to the present invention has been described above with reference to the preferred embodiments, but the present invention is not limited to this. For example, a plurality of discharged image forming image receiving papers are grouped, A device having various processing functions such as a sorter for automatically collating documents, a finisher for automatically folding and aligning the image receiving sheets, and an automatic document feeder for automatically feeding a large number of documents to a document table. It is needless to say that various improvements and design changes can be made without departing from the gist of the present invention such as addition of the above.

<Effects of the Invention> As described above in detail, according to the present invention, two or more different image forming methods can be selected and implemented by one apparatus. For example, a color image of an original can be obtained as a color image with good color reproduction by a color image forming method in which a latent image is formed on the image by utilizing a chemical reaction, and a character isoline image is a monochrome electrophotographic image. An image with high density and good sharpness can be obtained depending on the forming method.

Moreover, in the present invention, since the original image is directly exposed on the photosensitive member and the photosensitive material, a clear and high-quality image can be obtained.

Further, by selecting the exposure path of the photosensitive material and the photoconductor to the exposure part by using the half mirror or the moving mirror, the number of parts is smaller and the operating part is smaller than the conventional one. It is easy and can be miniaturized.

Further, in the present invention, by reading the image several times, images formed by different image forming methods can be overprinted in good condition.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the image forming apparatus of the present invention. FIG. 2 is a partial sectional view of another embodiment of the image forming apparatus of the invention. FIG. 3 is a sectional view of another embodiment of the image forming apparatus of the invention. FIG. 4 is a partial sectional view of another embodiment of the image forming apparatus of the invention. Explanation of symbols S ... Photosensitive material, C ... Image receiving paper, 1 ... Housing, 2
...... Manuscript table, 3 ... Partition, 12 ... Sensitive material roll, 14 ... Sensitive material magazine, 16 ... Exit, 20 ... Magazine connection dark box, 22
…… Sensitive material feeding roll, 23 …… Cutter unit, 24
…… Guide plate, 26 …… Exposure sensitive material support rolls, 28,30 ……
Sensitive material nip roll, 32, 34 ... Exposure position, 40 ... Heat developing device, 42 ... Development housing, 44 ... Heating roll, 4
6, 47, 48, 49 …… Belt support roll, 50 …… Belt, 5
2 ... Nip roll, 54 ... Guide device, 56 ... Exit, 5
8 ... Vertical guide device, 60 ... Sensor, 62, 64 ... Pressure contact roll, 66 ... Nip roll, 68 ... Guide member, 70 ...
… Sensitive material image superimposing device, 72 …… Image receiving paper feeding device, 74
…… Image receiving paper supply cassette, 76 …… Image receiving paper feeding roll, 78 …… Guide plate, 80, 82 …… Pressure nip roll, 8
4, 86 …… Backup roll, 88 …… Transfer device, 90…
... Peeling device, 92 ... Guide member, 94 ... First feed roll, 96 ... Feed roll, 98,100 ... Guide roll, 102 ...
… Peeling belt, 104 …… Sensitive material discarding section, 105,106 …… Guide roll, 107,109 …… Feed roll, 108 …… Guide member, 110,112 …… Feed roll, 114 …… Disposal box, 1
15, 116, 117 ... Guide member, 122, 124 ... Registration roll, 121a, 121b, 123a, 123b, 126, 128 ... Feed roll, 130 ... Take-out tray, 200 ... Imaging optical system, 208 ...
… Illumination lamps, 210, 212, 214, 216, 218 …… Mirrors, 2
20 ... Imaging lens, 250 ... Half mirror, 255 ... Total reflection mirror, 230 ... Aperture, 262, 264 ... Exposure path, 500 ...
... Monochrome electrophotographic forming device, 504, 505 ... Guide member, 506, 508 ... Feed roll, 510 ... Photoconductor, 512 ...
Charging device, 514 …… Toner developing device, 516 …… Transfer charging device, 51
8 ... Cleaner, 519 ... Exposure lamp, 524 ... Separation roll, 525 ... Guide member, 530 ... Heating roll,

Claims (14)

[Claims] 1. An image forming apparatus for forming an image by directly exposing a document image onto a photosensitive material, comprising a slit scanning exposure system, means for branching an exposure path of the slit scanning exposure system into two or more, and A plurality of image forming means arranged in front of each of the branched exposure paths and performing an image forming method using different photosensitive materials, and performing image formation by the image forming means according to an image to be formed. An image forming apparatus characterized by. 2. The image forming apparatus according to claim 1, wherein the plurality of image forming units share an imaging lens and have the same conjugate length. 3. The image forming apparatus according to claim 1, wherein the exposure path is branched by a half mirror. 4. The image forming method is a color image forming method which forms a latent image or a visible image in an image form by utilizing a chemical reaction, and a monochrome electrophotographic image forming method. The image forming apparatus according to any one of items 3. 5. The image forming apparatus according to claim 4, wherein a silver halide photosensitive material is used as the photosensitive material in the color image forming method. 6. The image forming apparatus according to claim 4, wherein a photosensitive resin material is used as the photosensitive material in the color image forming method. 7. The image forming apparatus according to claim 4, wherein in the color image forming method, a photosensitive material is used as a photosensitive material. 8. An image forming apparatus for forming an image by directly exposing an original image on a photosensitive material, comprising a slit scanning exposure system, means for switching the exposure path of the slit scanning exposure system to two or more, and the switching. A plurality of image forming means arranged in front of each of the exposure paths and performing an image forming method corresponding to different photosensitive materials, and image formation is performed by the image forming means according to the image to be formed. An image forming apparatus characterized by. 9. The image forming apparatus according to claim 8, wherein the plurality of image forming means share an imaging lens and have the same conjugate length. 10. The image forming apparatus according to claim 8, wherein the exposure path is switched by moving a mirror provided in the exposure path. 11. The image forming method is a color image forming method which forms a latent image or a visible image in an image form by utilizing a chemical reaction, and a monochrome electrophotographic image forming method. Item 10. The image forming apparatus according to any one of items 10. 12. The image forming apparatus according to claim 11, wherein a silver halide photosensitive material is used as the photosensitive material in the color image forming method. 13. The image forming apparatus according to claim 11, wherein a photosensitive resin material is used as the photosensitive material in the color image forming method. 14. The image forming apparatus according to claim 11, wherein in the color image forming method, a photosensitive material is used as a photosensitive material.