JPH01112275A - Image forming device - Google Patents

Abstract

PURPOSE:To obtain color images whose color is excellent reproduced and clear, excellent linear images such as a character at high density by simultaneously or individually operating a color image forming device and a monochromic electrophotographic device. CONSTITUTION:The title device consists of an image reading device 200, an image processing device 250, a color exposing device 300, a heating developing device 40, a transferring device 88 and the monochromic electrophotographic device 500. In this case, the color image forming device and the monochromic electrophotographic device can be simultaneously operated. Recording can be overlapping performed onto the color image obtained by the color image forming device by means of the monochromic electrophotographic device. The color image forming device and the monochromic electrophotographic device 500 can be individually operated. Moreover, a color image formation range and a monochromic image formation range can be set. Thus, color images whose color is excellently reproduced and clear linear images such as the character at high density can be simultaneously obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image forming apparatus, and more particularly to an image forming apparatus for copying a color image and a character contour image original.

[Conventional technology and problems]

2. Description of the Related Art As image forming apparatuses for copying color originals, those based on a color electrophotographic method, a silver halide color photographic method, and a photosensitive pressure-sensitive color material method are known.

In color electrophotography, a color original is generally exposed to light using a blue, green, or red color separation filter to form an electrostatic latent image on a charged photoreceptor drum, and then the latent image is converted into yellow, magenta, or cyan. The color toner image is then transferred to a transfer paper and fixed, and then the same process is repeated for each color to reproduce a color image.

Furthermore, in the silver halide color photographic system, a color image is reproduced using a certain type of silver halide color photosensitive material.

In addition, in the photosensitive pressure-sensitive color material method, a color image is reproduced using a photosensitive pressure-sensitive color photosensitive material.

As a photosensitive and pressure sensitive color photosensitive material, for example, a polymerizable compound is cured imagewise by exposure, as disclosed in JP-A-57-179836 filed by the present applicant.
There is a type that then applies pressure and obtains a visible image.

This material has a synthetic polymer resin wall capsule containing a vinyl compound, a photopolymerization initiator, and a colorant precursor supported on a support.

Also, after containing silver halide and exposing it to light, heat development is performed to develop the silver halide, the polymerizable compound is simultaneously cured in correspondence with this development, and then pressure is applied to obtain a visible image. As a type, the specification of Japanese Patent Application No. 121284/1984 or Japanese Patent Application No. 6/1983 related to the application filed by the applicant is
There is a material disclosed in Japanese Patent No. 1-53881. The material disclosed in the above-mentioned Japanese Patent Application No. 121284/1984 is a material that is thermally developed and then transferred to an image-receiving material having an image-receiving layer to obtain an image on the image-receiving material. At least a photosensitive 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. . Furthermore, the material disclosed in the above-mentioned Japanese Patent Application No. 61-53881 is for obtaining an image on a light-sensitive material without using an image-receiving material. One of the substances that cause a color reaction and a polymerizable compound are contained in microcapsules, and the other substance that causes a color reaction contains a polymerizable compound. It has a photosensitive layer on the support that exists outside the microcapsules.

A method for obtaining images using this photosensitive material is disclosed in the aforementioned Japanese Patent Application No. 121284/1984.

This image forming method first performs imagewise exposure to form a latent image, and then polymerizes the polymerizable compound in the area where the latent image is present by heating or by using light energy during the formation of the latent image to produce a polymer compound. Harden the microcapsules. Then, the image-receiving material having an image-receiving layer to which the color image-forming substance can be transferred is overlapped with the image-receiving material and pressure is applied to rupture at least a portion of the microcapsules in the areas where no latent image exists, thereby transferring the color image-forming substance to the image-receiving material. to obtain an image on an image-receiving material.

To obtain a color image using the color electrophotographic method,
Since steps such as charging, exposure, development, and transfer are repeated at least three times, it takes time to form an image, and the apparatus becomes complicated and large. Further, color shift occurs due to overlapping of toner images of at least three colors, and it is difficult to obtain clear line images such as letters. In addition, in the silver halide color photography method, only one exposure is required, but complex wet processing steps such as developing, bleaching, fixing, and washing the light-sensitive material must be carried out, so each step requires A tank for storing the liquid is required, which increases the size of the apparatus, and requires complicated maintenance such as replenishment and replacement of the processing liquid.

In order to solve the problems of the color electrophotographic method and the silver halide color photographic method, the above-mentioned light-sensitive and pressure-sensitive color material method has been proposed to obtain color images with a simple configuration. Among color image forming apparatuses for copying color originals, although color images with good color reproduction can be obtained, none are capable of producing high-density, clear character contour images.

[Purpose of the invention]

An object of the present invention is to simultaneously solve the above-mentioned problems, and to provide an image forming apparatus that can obtain a color image with good color reproduction and a high-density and clear character contour image. .

[Means for solving problems]

An object of the present invention to solve the above-mentioned problems is to provide a color image forming apparatus that forms a latent image on a photosensitive material using a chemical reaction, and a monochrome electrophotographic apparatus. This is achieved by an image forming apparatus that Color photosensitive materials used in the color image forming apparatus include, for example, silver halide photosensitive materials, photosensitive resin materials, and photosensitive pressure sensitive materials.

That is, a color image of a document can be obtained with good color reproduction by a color image forming apparatus that forms a latent image in the form of an image on a photosensitive material using a chemical reaction, and a character isoline image can be obtained by A monochrome electrophotographic device can produce high-density, clear images.

Note that in the present invention, the color image forming apparatus and the monochrome electrophotographic apparatus can operate simultaneously, and the monochrome electrophotographic apparatus can perform superimposition recording on the color image obtained by the color image forming apparatus. .

Further, the color image forming apparatus and the monochrome electrophotographic apparatus can each be operated independently.

Furthermore, a color image forming range and a monochrome image forming range can be set.

[Embodiment]

Hereinafter, the image forming apparatus of the present invention will be explained with reference to drawings of an example in which a photosensitive pressure-sensitive heat development material is used.

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

This image forming apparatus basically includes an image reading device 200, an image processing device 250, a color exposure device 300, a heat developing device 40, a transfer device 88, and a monochrome electrophotographic device 500. . In the upper part of the housing 1, a portion including an image reading device 200, an image processing device 250, and a color exposure device 300 is separated from other portions by a partition wall 3. An opening 230 is provided in a portion of the color exposure device 300 through which the optical axis passes.

A photosensitive material magazine 14 containing a photosensitive material roll 12 wound with a photosensitive and pressure sensitive heat-developable color photosensitive material S (hereinafter referred to as photosensitive material) is removably attached to the side of the housing 1. At the outlet 16 of the photosensitive material S of the photosensitive material magazine 14, a pair of photosensitive material take-out rolls 22,22 housed in the magazine connection dark box 20 are arranged, whereby the photosensitive material S wound on the photosensitive material roll 12 is removed. It is pulled out to a certain length at a predetermined time.

When the leading edge of the photosensitive material S advances, the photosensitive material take-out rolls 22.22 move in a direction away from each other as shown by the imaginary lines to facilitate the advance of the photosensitive material S. A cutter unit 23 for cutting the photosensitive material S and a guide plate 24 are disposed in front of the magazine connection dark box 20 (hereinafter, the term "front" refers to the downstream side in the traveling direction of the photosensitive material, etc.).

In front of the guide plate 24, an exposed photosensitive material support roll 26 and two photosensitive material nip rolls 28 and 30 that are pressed against the exposed photosensitive material support roll 26 are arranged. The photosensitive material S guided by the guide plate 24 is brought into close contact with the exposed photosensitive material support roll 26 by the photosensitive material nip rolls 28.30.
Imagewise exposure is performed by an exposure device 300 at a position 32 between 30 and 30 .

A heat developing device 40 that heats and develops the exposed photosensitive material S is arranged in front of the exposed photosensitive material support roll 26 . The heat developing device 40 includes a developing housing 42 having a heat insulating effect, and is disposed within the developing housing 42, and has a diameter of about 120 mm.
An endless belt 50 is supported by a heating roll 44 heated to °C and four belt support rolls 46, 47, 48, 49, and is wound around the outer circumference of an arc of about 270° of the heating roll 44, and the support roll 49. The nip roll 52 is pressed against the nip roll 52.

The heat developing device 40 further includes an exposed light-sensitive material support roll 26.
A guide device 54 guides the photosensitive material S fed from the heating roll 44 onto the heating roll 44 and separates the photosensitive material S from the heating roll 44 after being heated and developed; It has a vertical guide device 58 for guiding to the exit 56, and the exit 56 is provided with a sensor 60 for detecting the tip of the sensitive material.

Directly below the outlet 56, a pair of pressure rolls 62, 64,
A photosensitive material image-receiving paper stacking device comprising a nip roll 66 pressed against a pressure roll 64, and a guide member 68 that guides the image-receiving paper C fed by the pressure roll 64 and the nip roll 66 to the contact portion of the pressure rolls 62 and 64. is placed.

An image-receiving paper supply device 72 is disposed on the side of the photosensitive image-receiving paper stacking device 70 . The receiver paper supply device 72 includes a receiver paper supply cassette 74 that protrudes from the housing 1 and is detachably attached, a receiver paper take-out roll 76 for preventing the receiver paper C from being ejected from the cassette 74, and a delivery roll 76. The ejected image receiving paper C is pressed into contact with the roll 64.
and a guide plate 78 that guides the nip roll 66 to the contact portion. Here, the width of the image receiving paper C is about 6 nm smaller than the width of the photosensitive material S, and the width of the image receiving paper C is about 6 nm smaller than the width of the photosensitive material S.
0, the image-receiving paper C is stacked on top of the photosensitive material S so that it is in the center of the photosensitive material S in the width direction.

A pair of pressure nip rolls 80, 82 and pressure nip rolls 80, 8 are provided below the photosensitive image receiving paper stacking device 70.
A transfer device 88 is provided, which includes backup rolls 84 and 86 for equalizing the pressure of the two in the axial direction. Pressure nip roll 80.82 weighs approximately 500 kg
They are pressed together by a pressure of /ci.

A photoreceptor paper peeling device 90 is provided below the transfer device 88 . The photosensitive material receiving paper peeling device 90 includes a guide member 92, a feed roll 94, and a guide roll 98 so as to press only the photosensitive material S at both end portions of the feed roll 94.
．． 100 and a peeling heald 102 wrapped around it.

A sensitive material disposal section 104 is provided in front of one side of the peeling device 90 . The sensitive material disposal section 104 includes a guide section +4' 108
.

115, 116, 117, and two pairs of feed rolls 10
7°109 and 110.112, and guide roll 105.
106 and a waste box 114, the peeling device 9
The photosensitive material S fed from 0 and guided by the guide member 108 is transferred to the guide roll 105 and the feed rolls 107 and 109.
, passing through the guide roll 106 and passing through the feed roll 110.11.
2, it is thrown into the waste box 114.

A branching device 95 for branching the conveyance path of the image receiving paper C is provided in front of the other side of the peeling device 90. It consists of a moving member 97. A monochrome electrophotographic device 500 is provided in front of one side of the branching device 95, and feed rolls 125, 127 and a take-out tray 131 are provided in front of the other side. When the electrophotographic apparatus 500 does not need to form an image, the image receiving paper C is attached to the electrophotographic apparatus 50.
The branching device 95 is unloaded so as to be transported to the take-out tray 131 without being transported to the take-out tray 131.

The monochrome electrophotographic apparatus 500 includes a monochrome exposure device 310 for imagewise exposure, a drum-shaped photoreceptor 510 coated with an organic photoconductive material having a spectral sensitivity peak around 780 nm, and a drum-shaped photoreceptor 510 that charges the photoreceptor 510. a charger 512 for charging the photoconductor 510; a magnetic brush type toner developer 514 for developing with toner an image-like electrostatic latent image formed on the photoconductor 510 by exposure; Transfer charger 5 for transferring the toner image to the image receiving paper C
16, a cleaner 518 for removing residual toner after transfer on the photoreceptor 510, an exposure lamp 519 for removing residual charge on the photoreceptor 510, and for separating the image receiving paper C from the photoreceptor 510. It consists of a separation roll 524, a feed roll 506, 508, and a heating roll 530 for heating and fixing the toner image on the image receiving paper C.
10 rotates in the direction of the arrow in M and is sequentially charged by a charger 512, subjected to imagewise exposure by an exposure device 310 to form an electrostatic latent image, and then developed by a toner developer 514 so that the toner image is exposed to light. formed on body 510.

Receiving paper C sent from the peeling device 90 via the branching device 95
is guided by the guide member 120, and the registration roll 12
2.124, the toner image on the photoreceptor 510 is timed and sent out, guided by the guide members 504 and 505, and runs along the outer circumference of the photoreceptor 510 at the same speed as the outer circumference speed of the photoreceptor 510. The toner image on the photoreceptor 510 is transferred onto the image receiving paper C by the transfer charger 516, and the toner image on the photoreceptor 510 is transferred from the photoreceptor 510 by the separation roll 524. After separation, the image receiving paper C is transferred to the photoreceptor 51.
The toner image on the image receiving paper C is heated and fixed by being guided by a guide member 525 to a heating roll 530 disposed in front of the image receiving paper C.

A take-out tray 130 for receiving the image-receiving paper C is protruded from the housing 1 and attached in front of the heating roll 530, and the image-receiving paper C is sent to the tray 130 by the feed rolls 126 and 128.

The photoreceptor 510 may be made of not only the above-mentioned organic photoconductive material but also an inorganic photoconductive material as long as it has a spectral sensitivity peak close to the wavelength of the laser light source used, and the toner developer 514 may be made of an inorganic photoconductive material. Not only the magnetic brush method but also the cascade method may be used.

Further, the electrophotographic apparatus 500 is formed into a unit and is configured to be detachably attached to the image forming apparatus housing 1. When the electrophotographic device 500 is not required, a laminating device or a coating device that forms a protective layer on the surface of the image receiving paper C having a color image is formed into a unit.
It can be attached to the housing 1 instead of the electrophotographic device 500.

FIG. 2 shows the image passing from an image reading device 200 to an image processing device 250, a color exposure device 300 and a monochrome exposure device 310.
FIG. 3 is a schematic diagram showing an exposure path up to

The image reading device 200 includes an illumination lamp 208 and a mirror 210 that integrally scan the entire lower surface of the glass plate 2, and moves in the same direction at 1/2 the speed of the illumination lamp 208 to direct the light of the illumination lamp 208 in that direction. mirrors 212, 214 that reflect
, a liquid crystal filter unit 216 divided into three color areas on a plane perpendicular to the optical axis as shown in FIG. 3, which time-divides the light from the mirror 214 into three colors, and an imaging lens 2.
18, and a CCD sensor 220 that performs optical note conversion. By rotating the filter unit 216 at a constant high speed by a drive device (not shown), the light from the mirror 214 is repeatedly time-divided into three colors, and the light of each color is sequentially irradiated onto the CCD sensor 220.

CCD sensor 220 scanning and filter unit 2
By synchronizing the 16 rotations, a certain 1
By irradiating the CCD sensor 220 with colored light, signals of three colors, R, G, and B, can be sequentially read out as shown in FIG. 4.

Next, in the image processing device 250, the analog/digital conversion circuit 222 converts the read signal from the CCD sensor 220 into a digital signal. Next, the imaging lens 21
The deterioration of the spatial frequency response caused by the sensor 220 (8 or CCI) is corrected by the contour enhancement circuit 224, the color correction calculation circuit 226 determines the exposure amount of each pixel, and the exposure control circuit 228 controls the exposure amount of each color. .

Then, light is emitted from the color exposure device 300 at a distance of 1 m for each of the three colors, and the photosensitive material S is exposed along the optical axis. Here, as the photosensitive material S, the photosensitive material (■) of Example 3 disclosed in Japanese Patent Application No. 61-42747 filed by the present applicant can be used.

In the color exposure apparatus 300, the red light has a wavelength of 1300
It is formed by a semiconductor laser 251 that emits a laser beam of 172 nm, and a second harmonic generation element (hereinafter referred to as an SHG element) 255 that converts the wavelength of this laser beam to 172 nm. The semiconductor laser 251 is, for example, an ND manufactured by NEC Corporation.
It is L5004. The SHG element 255 is L t N
b It is an O3 optical waveguide type element, and the wavelength of the incident laser light is set to 172, and a red light beam with a wavelength of 650 nm is emitted. A laser beam with a wavelength of 650 nm emitted from the SHG element 255 passes through a collimator lens 258 and is shaped.
The light is reflected by the total reflection mirror 261 toward the polygon mirror 270 .

The green light is a GaAsxP (1-X) semiconductor laser 252
Wavelength 1 emitted by the Nd:YAG crystal 254 after being excited by
It is formed by converting a 1064n laser into a wavelength of 172n by the SHG element 256. The laser beam emitted from the Nd:YAG crystal 254 is converted to a wavelength of 532 nm by the SHO element 256, shaped through a collimator lens 259, and then converted into a polygon mirror by a dichroic mirror 262 that passes red light and reflects green light. reflected towards 270.

The blue light is produced by a semiconductor laser 253 that emits a laser beam with a wavelength of 850 nm and a 5) I that converts this laser beam into 172.
It is formed by a C element 257. Semiconductor laser 253
is, for example, NDL3108 manufactured by NEC Corporation. S.H.
The laser beam with a wavelength of 425 nm emitted by the G element 257 is
A quick lock mirror 263 is shaped through a collimator lens 260 and passes red and green light and reflects blue light.
is reflected toward the polygon mirror 270.

The above-mentioned red light, green light, and blue light pass through the same optical path 264 and are reflected by the polygon mirror 270, and are reflected by the fθ lens 280.
The light is further reflected by a mirror 290 and reaches the photosensitive material S. As the polygon mirror 270 rotates around the shaft 271, the image light scans and exposes the photosensitive material S. A color image is formed by moving the photosensitive pressure-sensitive color photosensitive material S in a direction perpendicular to the scanning direction of the laser beam.

The color exposure apparatus 300 does not rely only on the above laser light,
A three-color liquid crystal shutter array, a three-line plasma array, or the like may also be used.

The edge enhancement circuit 224 calculates the corrected gradation values R4' and Gi' for the i-th pixel based on the following formula.

The image is corrected by determining Bi'. In the formula below, α and β are correction coefficients that vary depending on the color.

Ri' -αRR4-βR (R+, -+ +R engineering +1)
Gj' −αGGi−βG (G, −, +C,,.,
) Bi' −αBBi−βB (B, −, +B, .1
) Furthermore, the color correction calculation circuit 226 determines the exposure amount C4, Mi, and Yi of each pixel based on the following formula.

Here, all ""'a33 is a correction coefficient that takes into consideration the characteristics of the filter and the like.

Further, the color correction calculation circuit 226 is provided with a color balance automatic setting mode. That is, a pattern having a predetermined hue, saturation, and brightness is irradiated from the color exposure device 300, and the hue, saturation, and brightness of the image receiving paper C to which the pattern has been transferred are detected by the sensor 400 provided downstream of the peeling unit 90. The color correction calculation circuit 226 measures and compares it with a predetermined value.
control the correction coefficient of In the sensor 400, the fifth
As shown in the figure, a lamp 402 illuminates the image on the image receiving material, the reflected light is separated by a color separation filter 403, and the CCD
A photoelectric conversion element 404 such as a photodiode or an amorphous silicon diode converts light into an analog signal, and an arithmetic circuit 405 digitizes the analog signal.

FIG. 6 shows a block diagram of the arithmetic circuit 405.

404 is a photoelectric change element that converts red light, 406 is an operational amplifier that converts current to voltage, 407 is an analog switch, 408 is a sample/hold circuit, 409 is an A/D converter, 410 and 412 are green light and blue light, respectively. Photoelectric conversion elements 411 and 413 are operational amplifiers of the elements. The microprocessor 414 compares the digital signal from the arithmetic circuit 405 with a reference signal, and the color correction arithmetic circuit 2
The correction is controlled by changing all to a33 in 26. Further, all to a33 may be changed based on a lookup table (LUT).

Further, the correction coefficients of the color correction calculation circuit 226 can be determined not only in the above-mentioned automatic color balance setting mode but also in, for example,
The CCD sensor 220 detects a section on the original where the hue, saturation, and brightness are constant, and the sensor 400 measures the hue, saturation, and brightness in the section on the image receiving paper C after transfer that corresponds to this section. , correction coefficients all~ are set so that the value of the image receiving paper detected by the sensor 400 and the value of the main scanning line are equal to each other.
By determining a3+, all correction coefficients can be adjusted online without setting up a color balance mode.
'a33 can be changed.

Note that the photosensitive material S in the above embodiment has a structure in which microcapsules that develop colors of yellow, magenta, and cyan are dispersed in a single layer.
Compared to a color photosensitive material composed of three cyan emulsion layers, the sharpness of the recorded image is poor.

In other words, the outline of the image tends to become blurred. In this embodiment, predetermined signal processing (contour enhancement processing) is performed on the three-color separation signals read by scanning the original, so that a clear image can be obtained. moreover,
In this embodiment, a copying apparatus using a type that performs heat development as a photosensitive and pressure-sensitive color photosensitive material is shown, but if a type that does not perform heat development is used, the heat development device 40 may be omitted. It becomes what is given.

In the monochrome exposure device 310, the read signal from the CCD sensor 220 of the image reading device 200 is transmitted to the analog/digital conversion circuit 222 of the image processing device 250,
The exposure amount is controlled by the outline enhancement circuit 224, the color correction calculation circuit 226, and the exposure control circuit 228, and the photoreceptor 510 is exposed from the monochrome exposure device 310.

In the monochrome exposure apparatus 310, a semiconductor laser 312
A laser beam with a wavelength of 780 nm emitted from the collimator lens 313 is shaped and reflected by the rotating polygon mirror 315, passes through the f/θ lens 316,
The light is reflected by the mirror 317 and exposed onto the charged photoreceptor 510. The semiconductor laser 312 is, for example, HL7801E manufactured by Hitachi Seisakusho. At this time, as the polygon mirror 315 rotates, the laser beam is directed to the photoreceptor 5.
Scanning exposure is performed in the direction of the 100-rotation axis. And photoreceptor 5
10 rotates in a direction perpendicular to the scanning direction of the laser beam, an image-like electrostatic latent image is formed and developed with toner, and the toner image is then transferred onto image-receiving paper C to form a monochrome electrophotographic image. be done.

FIG. 7 is a sectional view of an image forming apparatus that is a modification of the embodiment of the present invention. In this image forming apparatus, a monochrome electrophotographic apparatus 500 is arranged upstream of a transfer apparatus 88, and an image receiving paper C before a color image is transferred from a photosensitive material S.
This device attempts to form images using monochrome electrophotography, and the same effect can be obtained with this device.

In the embodiments shown in FIGS. 1 and 7, when performing only image formation using the monochrome electrophotographic device 500, the image is received without operating the color image forming devices such as the color exposure device 300 and the heat developing device 40. Paper supply bag W
72 can be controlled to operate.

Furthermore, a color image forming range and a monochrome image forming range can be set. In other words, it is possible to set in advance the range in which only color images are formed and the range in which only monochrome images are formed, and the color exposure device is controlled so that color images are not formed outside the color image formation range, and the white light source is A liquid crystal shutter is used to expose the photosensitive material outside the color image formation range to white light to prevent color image formation. In an electrophotographic device, the monochrome exposure device is controlled so that a monochrome image is not formed within the color image formation range, and the charges on the area corresponding to the color image formation range on the photoreceptor are erased by white exposure similar to the above. do. Then, a latent image of a monochrome image can be formed outside the color image formation range on the photoreceptor, so it is possible to set a color image formation range and a monochrome image formation range.

Further, in the embodiment described above, after the original image is read by the image reading device, the image information read by, for example, a CCD element is segmented in order to expose the photosensitive material S and the photoreceptor of the monochrome electrophotographic device. Although an exposure method in which control is performed by converting into a digital image signal is used, the present invention is not limited to this, and can also be implemented using an analog image exposure method. That is, a lens and a mirror are arranged in an exposure device to directly expose an original image onto a photosensitive material S and a photoreceptor of a monochrome electrophotographic apparatus. At this time, if the original, the photosensitive material S, and/or the photoreceptor of the monochrome electrophotographic device are remote, for example, an optical fiber array may be used.

〔Effect of the invention〕

According to the present invention, color images with good color reproduction can be obtained by a color image forming device that forms a latent image in the form of an image on a photosensitive material using a chemical reaction, and a color image with good color reproduction can be obtained by using a monochrome electrophotographic device. It is possible to obtain a character isoline image with good density and clarity.

Furthermore, since the color image forming device and the monochrome electrophotographic device can operate simultaneously or independently, it is possible to obtain a color image and a monochrome electrophotographic image on the same paper, to obtain only a color image, and to obtain a monochrome electrophotographic image on the same sheet of paper. It is possible to obtain only photographic images.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an image forming apparatus according to an embodiment of the present invention, and FIG.
The figure is a route diagram showing the exposure path from the image reading device to the exposure device, Figure 3 is an enlarged view of the filter, Figure 4 is a diagram showing the relationship between the filter and CCD sensor over time, and Figure 5 is a diagram of the sensor on the image receiving paper side. A schematic diagram, FIG. 6 is a block diagram of an arithmetic circuit in the image-receiving paper side sensor, and FIG. 7 is a sectional view of a modified example. Symbols in the figure: S-Photosensitive material C-Receiving paper 1-Housing 2-Glass plate 3-Partition wall 12-Sensitive material roll 14-Sensitive material magazine 16-Exit 20-Magazine connection dark box 22-Sensitive material drawing roll 23-Cutter unit 24- Guide plate 26-Exposed sensitive material support roll 28.30--One sensitive material nib roll 32-Exposure position 40-Heat developing device 42-Developing housing 44-Heating roll 46.47.48.49
- Belt support roll 50 - Heald 52 - Nip roll 54 - Guide device 56 - Outlet 58 - Vertical guide device W60 ~ sensor 62.64 - m - Pressure roll 66 - - Nip roll 68 - Guide member 7 - Photosensitive material receiver paper stack Aligning device 72--Receiving paper supply device 74-Receiving paper supply cassette 76-Receiving paper take-out roll 7B-Guide plate 80.8
2--Pressure nip roll 84.86-Backup roll 88-Transfer device 9〇-Peeling device 92-Guide member 94-Feed roll 95-・Branch device 96-Feed roll 97-
Swinging members 98, 100 - Guide roll 102 - Peeling sheet 104 - Sensitive material disposal section 105, 106 - Guide roll 107 - Feed roll 108 - Guide member 109.1
10,112-Feed roll 114-Waste box 115.116,1.17,120-Guide member 122
．． 124-Register roll 125.126, 127, 128-Feed roll 130.
131 =-Takeout tray 200-m-Image reading device 20B-Illumination lamp 21
0.212,214-Mirror 216-・Liquid crystal filter unit 218-Imaging lens 220-CCD sensor 222
=-Analog/digital conversion circuit 224-・Contour enhancement circuit 226-Color correction calculation circuit 228-Exposure control circuit 2
30-Aperture 250--Image processing device 25L252, 253-Semiconductor laser 254--Nd, YAG crystal 255, 256, 257-, SHG element 258.25
9,260---Collimator lens 261---Total reflection mirror 262.263-Gwiklock mirror 264-Optical path 2
70-polygon mirror 271-axis 280-fθ lens 290- mirror 300-
--Color exposure device 310-Monochrome exposure device 312--Semiconductor laser 313-Collimator lens 315-Polygon mirror 316-fθ lens 317
--Mirror 400-Sensor 402--Lamp 403-Color separation filter 404.41
0,412-Photoelectric conversion element 405-Arithmetic circuit 406
, 411, 413 - operational amplifier 407 - analog switch 408 - sample hold circuit 409 - analog/digital converter 41.1 - microprocessor 500 - monochrome electrophotographic device 504, 505 - guide member 506. 508- Feed roll 510- Photoreceptor 512-- Charger 514-) Toner developing device 516-- Transfer charger 51
8-Cleaner 519-Exposure lamp 524-Separation roll 525-Guide member 530-Heating roll Agent Patent attorney (810'l) Kiyotaka Sasaki (3 idiots)

Claims (1)

[Scope of Claims] 1) An image forming apparatus comprising: a color image forming apparatus that forms a latent image on a photosensitive material using a chemical reaction; and a monochrome electrophotographic apparatus. 2) The image forming apparatus according to claim 1, wherein the photosensitive material in the color image forming apparatus is a silver halide photosensitive material. 3) The image forming apparatus according to claim 1, wherein the photosensitive material in the color image forming apparatus is a photosensitive resin material. 4) The image forming apparatus according to claim 1, wherein the photosensitive material in the color image forming apparatus is a photosensitive and pressure sensitive material.