JPH02219040A - Scanning exposure device - Google Patents

Abstract

PURPOSE:To adjust a slit in front of an exposure planne at any magnification in response to the magnification and to realize exposure under the excellent condition that flare infiltration to the exposure plane is greatly reduced by providing a pair of individually movable slit plates on front of the exposure position of photosensitive material. CONSTITUTION:The device is composed of light source units such as an exposure light source 152, etc., a mirror unit, a lens unit 160 which is movable in front/rear direction along an optical path L, a shutter 162, a senser 164 and the variable slit for the pair of slit plates 170 and 172 which are arranged directly in front of a partition wall 168 and are individually movable in scanning direction. For the exposure, each slit plate is individually shifted matching with the shift of the photosensitive material A carried in synchronism with the exposure light source 152. Therefore, reflected light beam from an original changes its width in the scanning direction by the exposure magnification, but the slit width can be adjusted in response to the change. Thus, the flare infiltration to the exposure plane is greatly prevented, and an excellent image is formed at any exposure magnification.

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a scanning exposure apparatus. Specifically, the present invention relates to a scanning exposure device that prevents flare from entering the exposure position and also allows editing.

<Prior art> Exposure devices used in various types of copying machines, printers, printing presses, etc., can: ■ Reduce the exposure area and make the exposure device more compact, compared to one-shot exposure that exposes a still image at once. ■ Slit scanning exposure is often used because the amount of light from the light source can be reduced.

The fifth example is the application of such a scanning exposure device to a copying machine.
As shown in the figure.

The exposure apparatus 500 normally includes an exposure light source 506 that irradiates the original 504 while scanning the lower surface of the original 1'i1% 504 placed on the original platen 502 in the direction of arrow X; A mirror 508 that moves integrally, a mirror 510° 512 that moves at 1/2 the speed in the same direction as the exposure light source 506, and a lens unit 514 that includes an imaging lens, a color filter, various apertures, etc. , a photometer 516 that measures light reflected from the document 504 during pre-scanning and white balance adjustment, and a photometer 51 that measures the light path.
6 side and the exposure surface 518 side.
Consists of etc.

In the scanning exposure apparatus 500, an exposure light source 506 illuminates the original 504 while scanning in the direction of arrow X at a predetermined speed.

The reflected light from this original 504 (hereinafter referred to as reflected light) passes through a slit 507 and moves in the same direction as the exposure light source 506 to a mirror 508 that moves integrally with the exposure light source 506 at 1/2 the speed. It is reflected by the moving mirrors 510 and 512 and travels along the optical path, and the amount of light is changed by the lens unit 514.
The light quality is adjusted, passes through the slit 522, and is exposed to the exposed surface 5.
An image is formed at 18, and a photosensitive material 528, which is scanned and conveyed by a pair of rollers 524 and 526, is exposed.

When the exposure is completed, the exposure light source 506 is turned off, and the shutter 520 is moved to the position shown by the dotted line in the figure, and the fulcrum 520 is
It rotates around axis a to block light from the optical path.

<Problem to be Solved by the Invention> In such an exposure apparatus 500, the position of the imaging lens (lens unit 514) is moved in the front-rear direction of the optical path, and at the same time the mirrors 510 and 512 are moved to change the optical path length. This allows the image to be formed to be enlarged or reduced by changing the exposure magnification.

Here, the width of the reflected light imaged on the exposure surface 518 in the scanning direction of the photosensitive material indicated by arrow 2 (hereinafter referred to as scanning width) varies depending on the exposure magnification. Temporarily set the slit width of 507 to 10
Assuming 111m, 10mm for equal exposure, 20+nm for double exposure, and 5a+m for 1/2 exposure.
becomes.

Therefore, the width of the slit 522 in front of the exposure surface 518 is usually 16 to 20 a+m in a scanning exposure device that has a scanning width of 101111 for the isometric light and can perform 1/2 to 2 times the exposure.
It is said that the degree of

However, if the slit width of the slit 522 is 16 mm, the scanning width is smaller than the slit width when performing isostatic light or reduction exposure, and gaps are created above and below in the scanning direction of the reflected light in the slit 522. Put it away.

Therefore, there is a problem that so-called flare such as diffusely reflected light from the imaging lens or light from the outside enters the exposure surface 518 through this gap, resulting in blurred images, blurred outlines, etc., and it is impossible to obtain a good image.

In addition, in recent scanning exposure devices, a small original is exposed to certain parts of the photosensitive material while leaving the rest unexposed. It would be desirable to be able to perform so-called editing, such as compositing desired parts of multiple images, by performing operations such as; and later exposing the unexposed parts for multiple exposure. Conventional scanning exposure devices require masking, etc., making such editing difficult, and improvements are desired.

An object of the present invention is to solve the problems of the prior art described above, and the slit in front of the exposure surface can be adjusted according to the magnification in exposure at any magnification, thereby preventing flare from entering the exposure surface. It is possible to perform exposure in a good condition with significantly reduced exposure, and it is also possible to perform operations such as exposing only an arbitrary position on the photosensitive material of a small original, or exposing only an arbitrary position of the original image on the photosensitive material. It is an object of the present invention to provide a scanning exposure apparatus which can also have an editing function by combining them and performing multiple exposure.

Means for Solving the Problems> In order to achieve the above objects, the present invention provides an exposure light source;
A scanning exposure device that includes a plurality of mirrors and an imaging lens and scans and exposes a photosensitive material with reflected light emitted from the exposure light source and reflected on the original image, the scanning exposure device comprising: a pair of slit plates that are arranged to be movable independently in the scanning direction; a moving means that moves each of the pair of slit plates independently; A scanning exposure apparatus is provided, characterized in that it has a control means for controlling a moving means to move each plate independently.

<Operation of the Invention> The scanning exposure apparatus of the present invention includes a
It has a pair of slit plates that can be moved individually, and each slit plate can be moved individually in accordance with the movement of the photosensitive material that is transported in synchronization with the exposure light source during exposure. .

Therefore, the width of the reflected light from the document in the scanning direction changes depending on the exposure magnification, but in the scanning exposure apparatus of the present invention, it is possible to adjust the slit width accordingly. There is no gap between the light and the slit, and flare, such as diffusely reflected light from the imaging lens, can be largely prevented from entering the exposed surface, ensuring good image formation at any exposure magnification. can be done.

Furthermore, in the scanning exposure apparatus of the present invention, by specifying the exposure position on the photosensitive material by various means, it is also possible to move each slit plate in accordance with the specification and open/close the slits.

Therefore, by using an area specifying means such as a digitizer, it is possible to expose a part of the original image to only a certain part of the photosensitive material, or to expose only a predetermined position on the photosensitive material using a small original image. By using this to perform multiple exposure, it is also possible to combine and edit multiple manuscripts.

<Embodiments> Hereinafter, a scanning exposure apparatus of the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.

FIG. 1 shows a preferred embodiment of the scanning exposure apparatus of the present invention.

The scanning exposure device 150 shown in FIG. The photosensitive material A is scanned and conveyed in the two directions of the arrows by the conveyance rollers 58 and 60 while being pressed by the exposure position 4.
6a performs slit scanning exposure.

Such a scanning exposure apparatus 150 basically includes a light source unit having an exposure light source 152, a reflector 17.1, and a mirror 154, a mirror unit having mirrors 156 and 158, and a light source unit along an optical path. A lens unit 160 that is movable in the front-rear direction, a shutter 162, a sensor 164, and a sensor 164 are arranged in front of the partition wall 16B (hereinafter, ``front'' refers to the front in the traveling direction of reflected light) in the scanning direction (up and down in the figure). A pair of slit plates 1 that can be moved independently in
70 and 172 variable slits.

The light source unit moves on the lower surface of the document table 8o in the scanning direction indicated by the arrow X by means not shown, and the light source 1 for exposure
At 52, the original 130 is irradiated.

The exposure light source 152 of the light source unit is a halo ν lamp, a fluorescent lamp, or the like, and a slit 176 is formed in the reflector 174 to define the width of the reflected light from the original 130 in the scanning direction.

The light reflected from the original 130 (hereinafter referred to as reflected light) passes through the slit 176, is reflected by the mirror 154, and enters the mirror unit.

The mirror unit includes mirrors 156 and 15 as described above.
8, and 172 in the same direction as the light source unit.
, and reflects the reflected light onto a predetermined optical path.

The lens unit 156 is a combination of an imaging lens and a light control device that adjusts the amount and quality of reflected light, and includes a front lens group 178 and a rear lens group 180, which are imaging lenses, 178 and the rear group 180, a first color filter 182 consisting of a clear through filter, a cyan filter, and a magenta filter, a fixed aperture 184, and a second color filter 186 consisting of a clear through filter, a cyan filter, and a yellow filter; It has a variable aperture consisting of a pair of aperture plates 188a and 188b, which is arranged behind the rear lens group 180.

This lens unit 160 is configured to be movable in the front and rear directions of the optical path and, if necessary, in the vertical direction on the same plane as the reflected light beam. By moving it toward the rear, magnification exposure is performed, and by moving it backward, reduction exposure is performed.

The shutter 162 switches the optical path between the sensor 164 side and the exposure position 46a side, and is rotatably supported by a support shaft 190 at a position shown by a solid line and a position shown by a dotted line, and is used for normal exposure. Sometimes it is placed in a position away from the optical path shown by the solid line in the figure, and when pre-scanning or adjusting white balance, it is placed in a position inserted into the optical path shown by the dotted line in the figure to reflect the reflected light. The light is made incident on the sensor 164 through the mirror 192.

The sensor 164 measures the amount of light, light quality, etc. during pre-scanning and white balance adjustment, and depending on the measurement results, the type and insertion of color filters in the lens unit 156, as well as the variable The amount of light intensity adjustment at the diaphragm is determined and adjusted.

The scanning exposure apparatus 150 of the present invention includes a pair of slit plates 1 that are movable independently in the scanning direction of the photosensitive material shown by the arrow Z, in front of the partition wall 168 with the photosensitive material supply unit 12.
Variable slits having 70 and 172 are arranged.

FIGS. 2a to 2f show schematic diagrams representing such variable slits.

The variable slit of the scanning exposure apparatus 150 of the present invention includes a pair of slit plates 170 and 172, a moving means that allows each slit plate to move independently in the scanning direction (vertical direction in the figure), and a moving means for moving each slit plate. and control means for controlling.

In the illustrated example, each of the slit plates 170 and 172 has a rack formed on one end surface in a direction perpendicular to the scanning direction (in the rear direction in the figure), and the rack formed on the slit plate 170 is connected to the rack through a gear 194. A motor 196 and a motor 200 are respectively locked to a rack formed on the slit plate 172 via a gear 198 to form moving means, and the slit plate 170 is rotated by the motor 196, and the slit plate 172 is rotated by the motor 200. This makes it possible to move independently in the scanning direction.

A control circuit 202 is also connected to the motors 196 and 200 to control the movement of each motor.

By having such a variable slit in the scanning exposure device 150 of the present invention, during normal exposure, the slit width of the variable slit can be adapted to the scanning of reflected light at that magnification during exposure at any magnification. It is possible to set the exposure position 46a to 46a, and it is possible to perform exposure in a good condition with greatly reduced intrusion of flare into the exposure position 46a.

In addition, by controlling the movement of each slit plate, it is possible to expose only a part of the original image onto an arbitrary part of the photosensitive material, or to expose only a predetermined position on the photosensitive material with a small original image. By using this feature and performing multiple exposure, it is also possible to combine and edit multiple manuscripts.

The effect of the variable slit when only a portion of the photosensitive material is exposed will be explained below using FIGS. 2a to 2f.

The following description will be made in the scanning exposure device 150 in which the document is placed in the center position as shown in FIG.
30a is placed, and the image of this original 130a is exposed at the same magnification in the area shown in the area 130b in FIG. 3b.

The original M 130a is placed on the document table 80 as shown in FIG. 3a, and then the exposure area on the photosensitive material A is set as shown in FIG. 3b by a digitizer or the like connected to the control circuit 202. It is set in the area indicated by b.

When the copy button is pressed, the photosensitive material A is conveyed in the two directions of the arrows.

Here, as shown in FIG. 2a of the variable slit, mutually opposing surfaces of the slit plates 1 f0 and 172 are brought into close contact,
It functions as a shutter that blocks light from the exposure position 46a.

When the exposure start position a of the specified area on the photosensitive material A is conveyed to the position where the two slit plates are in close contact with each other, the motors 196 and 200 start rotating clockwise in the figure, as shown in FIG. 2b. , each slit plate has its opposing surfaces in close contact with each other, shielding the exposure position 468 from light, and moving the opposing surface to the exposure starting position 8.
, and move backward (hereinafter referred to as "downward") in the scanning direction.

When the exposure start position a (the opposing surfaces of both slit plates) is conveyed to the upper end of the reflected light beam from the original, the motor 198 stops as shown in FIG. 2C, and the slit plate 170
stops at a position where its lower end surface is aligned with the upper end of the reflected light beam.

Meanwhile, the motor 200 continues to rotate, and the slit plate 172 aligns its upper end surface with the exposure start position a and descends in synchronization with the conveyance of the photosensitive material A to open the variable slit, and the photosensitive material A is removed from the original. Exposure is performed with reflected light from the exposure start position a.

When the upper end surface of the slit plate 172 moves to the lower end of the reflected light beam, the motor 200 stops and the slit plate 172 stops descending, and the variable slit has a width in the scanning direction of the reflected light as shown in FIG. 2d. The photosensitive material A is exposed to light at the exposure position 46a in a suitable state without intrusion of flare.

When the exposure progresses and the photosensitive material A is conveyed until the exposure end position of the specified area on the photosensitive material A reaches the upper end of the reflected light beam, the motor 196 starts rotating clockwise again.
As shown in FIG. 2e, the slit plate 170 aligns its lower end with the end of exposure position, descends in synchronization with the conveyance of the photosensitive material A, and begins to close the variable slit.

When the photosensitive material A is conveyed until the exposure end position reaches the lower end of the reflected light beam, the slit plate 1, which has been lowered synchronously,
The lower end surface of the slit plate 70 and the upper end surface of the slit plate 72 are brought into close contact with each other to close the variable slit and move to the exposure position 46.
act as a shutter by blocking light from the motor 20.
0 begins to rotate clockwise, and as shown in FIG. 2f, both slit plates align their opposing surfaces to the exposure position 46
The exposure position 46 is set using the slit plate 170 while blocking light from a.
Move a downward to a position where it can completely block light.

When the exposure of the photosensitive material A is completely completed, the motors 196 and 200 start rotating counterclockwise in the figure, and the two slit plates are moved at the slit plate 172 shown in FIG. The exposure position 46a is moved upward to a position where it can be shielded from light, and it waits for the next exposure.

In the scanning exposure apparatus of the present invention, by having such a variable slit, it is possible to expose the original 130a to any arbitrary position on the photosensitive material A, and only that position.

Therefore, in the above operation, area 1 on photosensitive material A
Since the portions other than 30b (FIG. 3b) are unexposed, it is possible to edit a plurality of images by multiple exposing other images to other portions in the same manner.

Furthermore, by repeating the same operation and exposing the same image multiple times, it is also possible to expose a large number of the same images on one sheet of photosensitive material A.

In the illustrated example, the movement of the slit plates 1F0 and 172 is performed by individually arranged motors 196 and 200, but the present invention is not limited to this.
Both slit plates may be independently movable by a single drive source using a clutch, gear, or the like.

Furthermore, the movement method is not limited to the rack formed on the slit plate, but various methods such as those using various cams, drive shafts, links, belts, wires, etc. can be used.

Furthermore, in the scanning exposure apparatus of the present invention, the movement of each slit plate is controlled by arranging a sensor in the middle of the conveyance path of the photosensitive material A, thereby detecting the position of the photosensitive material A, and moving the slit plate. Various methods are available, such as a method in which the movement method of each slit plate is determined in advance according to the exposure magnification, image forming size, etc., and input by the operator, or a method in which these are measured by the sensor 164 and automatically controlled. is applicable.

In the above explanation, the entire area in the width direction (hereinafter referred to as the width direction) in the direction perpendicular to the scanning direction indicated by the arrow X was exposed to light. by moving vertically, or
By masking unnecessary parts, it is also possible to expose only a part of the film instead of the entire width.

FIG. 4 shows a scanning exposure apparatus 150 of the present invention as described above.
An example of application to a silver halide photocopying device is shown.

A silver halide photocopying apparatus 10 (hereinafter referred to as the copying apparatus 10) shown in the figure includes a photosensitive material supply unit 16 on the right side, an exposure unit 18 above it, and a processing unit 20 below it. ing.

Here, the exposure unit 18 is the scanning exposure device 1 described above.
50 is applied.

The photosensitive material supply section unit 16 has a photosensitive material conveyance path within the photosensitive material supply section frame 28, and a pair of magazines 30.32 are removably attached to the upper and lower sides, and photosensitive materials 34.36 are stored inside these magazines. are housed in a roll, respectively, and are taken out from the tip to the photosensitive material supply unit 16. - For example, 34 is a photosensitive material most suitable for copying a color printed original, and 36 is a photosensitive material most suitable for copying a color photographic original.

In front of the magazine 30, a conveying roller 42 for drawing out the photosensitive material 34 and a cutter 44 for cutting the photosensitive material 34 into a predetermined length are arranged.

Between the cutter 44 and the exposure section 46 are photosensitive material conveyance guides 48a, 48b, 48c and conveyance rollers 50.5.
2 is arranged to guide the cut photosensitive material 34 to the exposure section 46.

The exposure section 46 is a part that defines an exposure position 46a of the photosensitive material 34, and in this exposure section 46, the exposure section unit 18
A glass plate 54 is fixed facing the exposure device 150, and a press plate 56 is pressed onto the glass plate 54.

A pair of conveyance rollers 58 and a pair of conveyance rollers 60 are provided on the upstream side (upper side) and the downstream side (lower side) of the exposure section 46, respectively.
is provided.

A conveyance guide 62 that guides the exposed photosensitive material 34 downward is arranged vertically below the exposure section 46, and a conveyance guide 66 that branches the conveyance path of the photosensitive material 34 (36) is arranged in the vertically intermediate part thereof. A switching guide 64 is provided for switching to the processing section unit 20 through the switching section.

On the other hand, the magazine 32 disposed below the magazine 30 also has a conveying roller 68 and a cutter 70 corresponding to the photosensitive material 36, and in front thereof, conveying guides 72a, 7
2b and a conveyance roller 74 are arranged to convey the photosensitive material 36 to the conveyance guide 48a.

The exposure section unit 18 has the above-described scanning exposure device 150 applied and arranged in the exposure section frame 98, so the same members are given the same numbers and the explanation thereof will be omitted.

The processing section unit 20 includes a processing section 22 and a drying section 24. A developing tank 102, a bleaching/fixing tank 104, and a washing tank 106 and 108 are successively provided in the processing section 22,
The processing liquid filled inside these allows for development, bleaching,
The photosensitive material 34 (36) that has been fixed and washed with water is sent to the drying section 24.

In the drying section 24, the photosensitive material 34 (36) after being washed with water is dried and sent onto the take-out tray 110.

The following describes the operation when normally copying the original 130 (when copying the entire image of the original 130 onto the entire surface of the photosensitive material A) using such a copying apparatus 10 that is compatible with the scanning exposure bag [150] of the present invention. do.

First, the original 130 is placed on the original table 80, and the original holder 1
5 is closed.

Next, when the exposure magnification is selected and a copy start button (not shown) of the copying device 10 is pressed, the exposure light source 152
lights up, the light source unit starts scanning, and pre-scanning begins.

In this case, each slit plate of the variable slit has its opposing surfaces in close contact with each other, and functions as a shutter.

The reflected light enters the mirror 154, is reflected, is reflected by the mirrors 156 and 158 of the mirror unit working B in the same direction as the light source unit at a speed of 1/2 of the scanning speed, travels along the optical path, and passes through the lens unit. ) 160 and shutter 1
62 and enters the sensor 164, image information is read by the sensor 164, and exposure correction conditions are set.

After the pre-scan ends, the light source unit and mirror unit return to the scan start position.

Further, each motor operates the variable slit to optimize the slit width according to the scanning width of the reflected light at the copying magnification.

On the other hand, while the above-mentioned pre-scanning and color filter and aperture correction are being performed, the photosensitive material necessary for copying according to the original is selected.9 As an example, when the original 130 is a color photographic original, When the photosensitive material 36 is selected and the transport motor (not shown) is driven, the transport roller 68
, 74 feed out the photosensitive material 36 by a predetermined length, and the cutter 70 cuts the photosensitive material 36 to the required length.

Thereafter, the conveyance motor is driven again to transport the photosensitive material 36.
is sent to the exposure section 46 and waits just before the exposure position 46a.

When the light source unit starts main scanning of the original 130 and the shutter 162 rotates to the position indicated by the solid line to enable exposure, at the same time, the conveyance rollers 58 and 60 of the exposure section 46 move the photosensitive material 36 at the scanning speed of the light source unit. Scan conveyance is started in synchronization.

During main scanning, reflected light that is irradiated to the light source 152 of the light source unit and reflected by the mirror 154 is transmitted to 1/1/2 of the light source unit.
The light is reflected by mirrors 158, 158 moving in the same direction at a speed of 2, passes through a lens unit 160 whose color and aperture are suitably adjusted, is modulated, passes through a variable slit in front of a partition wall 168, and is exposed. An image is formed at position 46a, and a pair of rollers 58 and 60 expose photosensitive material 36, which is scanned and conveyed in synchronization with the light source unit.

Here, since the copying apparatus 10 is an apparatus to which the scanning exposure device 150 of the present invention is applied, the variable slit is optimized according to the scanning width of the reflected light from the document, and the flare exposure position 46a is set to the variable slit. Exposure is carried out under good conditions with very little intrusion.

As this exposure progresses, the photosensitive material 36 is transferred to the conveying roller 58.
and 60, and is sent downward through the conveyance guide 62. In this case, the switching guide 64 does not act on the photosensitive material transport path, and the photosensitive material 36 sent from the exposure section 46 moves vertically downward within the transport guide 62.

When all exposure is completed, the shutter 162 rotates to the position shown by the dotted line in FIG.
2 and a portion is sent into the conveyance guide 48c.

This reverse conveyance is stopped when the leading end of the photosensitive material 36 is upstream of the switching guide 64.

Thereafter, each conveyance roller is rotated again in the same direction as the initial conveyance direction. In this case, the switching guide 62 acts on the photosensitive material conveyance path and sends out the leading end of the photosensitive material 36 to the branch conveyance guide 66. Therefore, the leading end of the photosensitive material 36 is sent to the processing section 22 of the processing section unit 20 through the branch conveyance guide 66.

The exposed photosensitive material 36 sent into the processing section 22 is subjected to development 41.
102, bleached and fixed in a bleaching/fixing tank 104, thoroughly washed with water in a washing tank 106°108, and then sent to a drying section 24. After drying, the take-out tray 1
It is taken out on top of 10.

Although the scanning exposure apparatus according to the present invention is configured as described above, the present invention is not limited thereto. It goes without saying that various improvements and changes in design can be made without departing from the spirit of the present invention, including application.

<Effects of the Invention> The scanning exposure device of the present invention has the following advantages:
Preferably, it has a pair of slit plates that are individually movable immediately in front.

Therefore, the slit width of the variable slit in front of the exposure position can be optimized to match the width of the light reflected from the document in the scanning direction of the photosensitive material at the exposure magnification. does not invade the exposure position, and good image formation can be performed.

Furthermore, since it is possible to independently control the movement of the slit plate, it is possible to expose only a part of the original image onto any part of the photosensitive material, or only at a predetermined position on the photosensitive material in the case of a small original image. For example, by specifying the exposure position on the photosensitive material using various means, it is also possible to move each slit plate accordingly and open and close the slits. , a digitizer, or other area specifying means, it is possible to expose only a part of the original image or to expose a small original image at a predetermined position on the photosensitive material.

Furthermore, by utilizing this and performing multiple exposure, arbitrary portions of multiple originals can be exposed onto a single sheet of photosensitive material for editing.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an example of a scanning exposure apparatus of the present invention. FIGS. 2a to 2f are schematic diagrams showing the operation of an example of a variable slit arranged in the scanning exposure device shown in FIG. 1. 3a and 3b are schematic diagrams for explaining a partial exposure method using the scanning exposure apparatus shown in FIG. 1. FIG. FIG. 4 is a schematic diagram of an example in which the scanning exposure apparatus shown in FIG. 1 is applied to a silver halide photocopying apparatus. FIG. 5 is a schematic diagram of a conventional scanning exposure apparatus. Explanation of symbols 10...Copying device, 12...Device main body,
DESCRIPTION OF SYMBOLS 15... Original holding unit, 16... Photosensitive material supply unit, 18... Exposure unit, 20... Processing unit, 22... Processing unit, 24... Drying unit, 2
8...Photosensitive material supply unit frame, 30.32...Magazine, 34.36...Photosensitive material, 38...Opening/closing lid, 42
．． 68... Conveyance roller, 46... Exposure section, 46a.
...Exposure surface, 54...Glass plate, 56...
・Press plate, 58. 60... Conveyance roller, 64... Switching guide, 80... Original table, 9
8... Exposure section frame, 102... Developer tank, 104
...Bleach/fixing tank, 106.108...Washing tank, 110...Take-out tray, 130...Document, 15
0...Scanning exposure device, 152...Light source for exposure, 154.156,158,192...Mirror 160.
... Lens unit, 162 ... Shutter, 164 ... Sensor, 1
68...Partition wall, 170.172...Slit plate 174...Reflector, 176...Slit,
178... Lens rear group, taO... Lens front group, 182... First color filter, 184... Fixed aperture, 186... Second color filter, tasa, taab... Aperture plate, 190... Support shaft, 194.198... Gear, 196.200... Motor, 202... Control circuit, 210... Area, A... Photosensitive material, L... Optical path, a ...Exposure start position, b...Exposure end position, X...Scanning direction FIG, 3a September 8, 1999

Claims (1)

[Claims] (1) A scanning exposure device that includes an exposure light source, a plurality of mirrors, and an imaging lens, and scans and exposes a photosensitive material with reflected light emitted from the exposure light source and reflected on a document image, a pair of slit plates that are arranged in front of the exposure position of the photosensitive material and are movable independently in the scanning direction; a moving means that moves the pair of slit plates independently; and an exposure area on the photosensitive material. and a control means for controlling a moving means so as to move the pair of slit plates independently in accordance with the movement of the pair of slit plates.