JPH0239139A - Copying device - Google Patents

Abstract

PURPOSE:To attain a copied image from a transmitting original just as from a reflecting original by pre-scanning a transmitting original image formed on the surface of a original platen by means of the image-forming optical system of a copying device main body for the purpose of correcting its color before scanning and exposing it on a photosensitive material. CONSTITUTION:Even as for the transmitting original, its projected image is formed on an image forming member on the original platen 80 where the reflecting original is placed. In a way the same as the reflecting original, the image is pre-scanned by the image-forming optical system 82 of the copying device main body 12; its pre-scanned information is ready by a sensor 94; its exposure correction condition is set. In addition, the color correction, diaphragm, etc., of the image-forming optical system 82 are adjusted; afterwards, the image is exposure on the optimum photosensitive material 34 or 36. Thus, a copied image of high quality, preferable color balance can and high definition be attained from a transmitting original just as from a reflecting original.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a copying device using a photosensitive material, and more particularly to a copying device capable of obtaining a copied image from a transparent original as well as from a reflective original.

<Prior Art> A copying device using a photosensitive material copies an image of an original onto a photosensitive material, and has the advantage of being able to make high-quality copies compared to an electrophotographic copying device. Examples of such photosensitive materials include silver salt photographic materials, photosensitive pressure sensitive materials, photosensitive resin materials, heat sensitive photosensitive materials, and diazo photosensitive materials.

Generally, in a copying machine that uses such photosensitive materials, the photosensitive material is fed from the magazine of the photosensitive material supply unit to the exposure position, and after exposing the original image, it is sent to the processing unit where it is developed and processed into a product. It is said that

By the way, the originals that are usually targeted by such copying devices are mainly reflective originals such as printed originals and photographs, and even if it is possible to copy transparent originals, the operation is extremely difficult compared to copying reflective originals. Since this is not only troublesome but also poor in image quality, there has been a strong demand for a copying apparatus that can easily switch between copying both transmissive and reflective originals and that can copy with high image quality.

Regarding electrophotographic copying devices, several copying devices capable of copying transparent originals have been proposed. For example, a copying machine that enlarges and copies microfilm or a slide projector is used to form a projected image of a slide on a halftone screen, and this halftone optical image is formed on a photoconductive member, or it is separated into each color and each color is An image is formed and transferred to obtain a black and white or color copy image.

<Problems to be Solved by the Invention> However, with the above-mentioned electrophotographic copying apparatus for enlarging microfilm copying or using a slide projector, it is extremely difficult to form a high-quality copy image equivalent to a photograph. there were.

In addition, in conventional copying machines that use photosensitive materials, in the case of transparent originals such as slides and negatives, the projected image is not formed on the imaging member on the original table surface on which the reflective original is placed, so the transparent original A fixed magnification determined by the device for projecting the image and the scanning exposure optical system of the copying device main body, that is, for example, only a copy image of one predetermined magnification determined by the combination of the projection lens, Fresnel lens, and the imaging lens of the copying device main body is obtained. This poses problems such as the inability to freely enlarge or reduce the original image using the variable magnification mechanism of the main body of the copying apparatus, similar to the case with reflective originals.

Furthermore, even with conventional copying machines that can copy transparent originals, it is not possible to obtain copies of sufficient image quality under the same exposure conditions as reflective originals, so copying machines that do not perform prescanning cannot actually copy images. A copy image of suitable image quality was obtained by performing the following operations several times: checking the obtained copy image and performing manual correction. Therefore, it takes a lot of effort, time, and money to obtain a high-quality copy image. For example, even if the exposure conditions are optimally determined for one transparent original, the exposure conditions will be different for another transparent original, resulting in the need to perform manual correction again.

For this reason, the above-mentioned conventional copying machines that can also copy transparent originals do not perform preliminary scanning (prescanning) to correct exposure conditions, etc., which increases the cost per copy of a transparent original. Q) Not only does it have problems, it is not possible to freely change the magnification such as enlarging or reducing it, making it troublesome for users to copy transparent originals, and it is not easy to use as it is not possible to copy as easily as reflective originals. There was a problem.

An object of the present invention is to solve the above-mentioned problems of the prior art, and even when copying a transparent original, a transmission thickness f high projection device having a projection device for a transparent original and an image forming member can be used for copying the original of a copying apparatus main body. By simply placing it on a processing table, it is possible to copy exactly the same 21 times as a reflective original, reducing the cost of copying each transparent original, and making it easy for the user to use it. To provide copying equipment.

Means for Solving the Problems> In order to achieve the above object, the present invention Ct includes an exposure unit unit equipped with a thread-image light system for scanning and exposing an image of a reflective original onto a photosensitive material. A copying machine main body having a photosensitive material supply unit unit that supplies the photosensitive material t1 to the exposure position and a processing unit unit that develops the completed photosensitive material and an irradiation light source for irradiating the transparent original are installed. and a transparent original projection device that is detachably attached to the copying apparatus main body, which forms a transparent original image on the reflection original platen surface of the exposure unit; The present invention provides a copying apparatus characterized in that a preliminary scan is performed for color correction before scanning and exposing a transparent original image formed on the photosensitive material by the imaging optical system of the copying apparatus main body. .

DESCRIPTION OF THE PREFERRED EMBODIMENTS A copying apparatus according to the present invention will be described in detail below based on preferred embodiments shown in the accompanying drawings.

FIG. 1 is a schematic cross-sectional view of a silver halide photographic color copying apparatus which is an example of the configuration of a copying apparatus capable of copying a transparent original according to the present invention.

As shown in the figure, a copying apparatus 10 of the present invention includes a copying apparatus main body 12 for copying both reflective originals and transparent originals, and a transparent original such as a negative film or slide as a projection original using a projection lens or the like. It has a projection document projection device 14 for projecting images for copying.

The copying apparatus 10 of the present invention is configured such that when copying a reflective original, the original projection device 14 can be removed and replaced with an original presser 15, as shown in FIG.

In addition, when copying a transparent original such as negative film or slides, or 0HP (overhead brochure) paper, which allows light to pass through, by placing it directly on the document table, as shown in Figure 3, Remove the projection original projector 14 or the original holder 15, and remove the transparent original light source device 13.
It is configured so that it can be installed.

In the present invention, the projection original projector 14 and the transparent original light source device 13 are collectively referred to as a transparent original projector.

The copying apparatus main body 12 will be explained in detail below with reference to FIGS. 1 and 2.

The copying apparatus main body 12 is provided with a photosensitive material supply unit 16 on its right side, an exposure unit 18 above it, and a processing unit 20 below it. Furthermore, the processing section unit 20 has a processing section 22 in the upper right corner, a drying section 24 in the upper left corner thereof, and a reserve liquid storage section 26 in which a supply bottle for replenishing a spare processing solution is stored below. .

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. The magazines 30 and 32 are each housed in a roll and taken out from the tip to the photosensitive material supply unit 16, and an opening/closing opening i38 is provided on the outside of the magazine 30, 32. Also, the photosensitive material supply section frame 28 is transferred to the main body 12 of the apparatus via the bottle 40! FI
The photosensitive material supply unit 16 is supported in such a way that it can be opened in the event of a jam or maintenance.

As an example of a photosensitive material, 34 is a photosensitive material most suitable for copying a color printed original which is a reflective original, and 36 is a photosensitive material most suitable for copying a color slide original or a color negative film original which is a transparent original.

Conveyance rollers 42a and 42b are horizontally extended and pivoted to the photosensitive material supply section frame 28 in correspondence with the slits at the outlet of the photosensitive material 34 of the magazine 30.

A cutter 44 is arranged on the opposite side 11117 of these transport rollers 42a and 42b from the magazine 30, and a photosensitive material transport guide 4 is disposed between the cutter 44 and the exposure section 46.
8a, 48b, and 48c are placed on the photosensitive material 3 after cutting.
4 to the exposure section 46. Between the conveyance guides 48a and 48b is a conveyance roller 5°5.
0 is arranged so that the photosensitive material 34 sent from the cutter 44 is sent upward through the transport guides 48a and 48b.

Furthermore, conveyance rollers 52, 52 are arranged above the conveyance guides 48b and 48c for the same purpose.

The upper part of the conveyance guide 48c has a substantially U-shape that opens downward, and guides the photosensitive material 34 downward to the exposure section 46.

The exposure section 46 is a part that defines an exposure position 46 a of the photosensitive material 34 , and the exposure section 46 is a part that defines an exposure position 46 a of the photosensitive material 34 .
A glass plate 54 is fixed facing the imaging optical system, and a suppression plate 56 is pressed to this glass plate 54. The photosensitive material 34 sent from the conveyance guide 48c passes through this glass plate 54.
and the suppression plate 56 with the emulsion surface facing the glass plate 54.

A pair of conveyance rollers 58 are provided upstream (upper side) of the exposure section 46.
a, 58b, and a pair of conveyance rollers 6 on the downstream side (lower side).
0a and 60b are provided so as to send out the photosensitive material 34 (36) vertically downward. Here, the conveyance rollers 58a and 60a are drive rollers, and are synchronously driven by a motor (not shown).
8b and 60b are driven rollers.

A conveyance guide 62 is arranged vertically below the exposure section 46 to guide the exposed photosensitive material 34 downward.

A switching guide 64 is provided at the vertical intermediate portion of the conveyance guide 62, and the photosensitive material 34 fed vertically downward within the conveyance guide 62 is transferred to a branch conveyance guide 66 that communicates with the processing section 22 of the processing section unit 20 when necessary. It is now possible to change direction.

On the other hand, conveyance rollers 68a and 68b are horizontally hooked to the magazine 32 disposed below the magazine 30, corresponding to the exit slits for the photosensitive material 36, so as to feed the photosensitive material 36 to the cutter 70. It has become. Conveyance guides 72a and 72b are arranged between the cutter 70 and the intermediate portion of the conveyance guide 48a.

A transport roller 74 is provided between the transport guides 72a and 72b.
．． 74 is arranged to pass the photosensitive material 36 sent from the transport rollers 68a and 68b to the transport guide 48a.

By the way, when the magazine 30, 32 is replaced, jammed, or maintained, when the opening/closing M38 is opened, the transport roller 42a,
68a separates from the transport rollers 42b and 68b, respectively, to open the photosensitive material 34.36, and when the open/close M38 is closed, the transport rollers 42a and 42b and 68a and 68b come into contact and press the photosensitive material 34.36, respectively. It is configured like this.

Furthermore, the conveying speed of conveying rollers 58a and 60a on both sides of the exposure section 28 is synchronized with the scanning speed of the document by a light source unit, which will be described later.

In order to accurately synchronize with this scanning speed, the transport roller 50
, 52.74 is set to be slightly faster than the above-mentioned scanning speed, and a rotation guide 76 biased by a thread node or a spring is provided upstream of the exposure section 46 to transport the photosensitive material 34.36.
It is possible to form a loop portion in the conveyance trajectory.

Next, the exposure section unit 18 of the copying apparatus main body 12 will be explained. In the case of a reflective original, the exposure section unit 18 places the reflective original on its back side, and in the case of a transparent original, it is placed on the projection original projector 14 or on the transparent original and the transparent original light source device 1.
3 i1i! An original platen 80 made of a transparent glass plate or the like is used to print the image on the original platen 80 to an exposure unit 46.
an imaging optical system 82 for performing slit scanning exposure on the photosensitive material 34 (36); an image sensor 94 used for image adjustment; It also has a shutter 96 for switching.

Here, the imaging optical system 82 moves in the same direction at 1/2 the speed of the light source unit having a light source 84 and a reflection mirror 86 that integrally scans the lower surface of the document table 8o. It is composed of mirrors 88 and 90 that reflect light from the light source 84 in a predetermined direction, and an imaging lens 92.

The imaging lens moving type imaging optical system 82 applied to the copying apparatus 10 of the present invention is configured to be capable of 0.5 to 2° zoom copying.

In the case of a reflective original, the original image on the original table 8o is illuminated by a light source 84 in the light source unit, and the reflected light enters the first mirror 86 in the same light source unit, whereas in the case of a transparent original, As will be described later, the light source 84 is not turned on to prevent the occurrence of flare, etc., and the original image projected by the transparent original projector and formed on the focused surface on the original platen 80 is reflected in the first image in the light source unit. The light enters the mirror 86. Whether it is a reflective original or a transparent original, the light carrying the original image incident on the first mirror 86 is direction-changed by the mirror 86, and then transferred to the second and third mirrors 88, 90.
The light is reflected by the light beam, passes through the imaging lens 92, and when the shutter 96 is opened, the photosensitive material 34 (36) in the exposure section 46 is exposed.

Note that during pre-scanning, white balance correction, etc., the shutter 96 is in the closed state shown by the dotted line in the figure, and the original g
The four images or the image formed by the white plate are reflected by a shutter 96 and manually inputted to an image sensor 94 to determine exposure correction conditions.

Here, the imaging lens 92 is composed of units such as a plurality of lenses, an aperture, and a color correction filter, and exposes the original image on the original table 80 whether it is a reflective original or a transparent original. It forms an image on the photosensitive material 34 (36) of the section 46 at a predetermined magnification and performs exposure under optimal exposure conditions, and is equipped with an aperture and a color correction filter to enable adjustment of the exposure conditions.

As an example of such an imaging lens 92, a configuration as shown in FIG. 4 can be cited.

As shown in the figure, the imaging lens 92 is connected to the front group 200 of the lens.
, a rear group 202 , a first color filter plate 204 , a fixed aperture plate 206 , a second color filter plate 208 , and a rear group 202 arranged in order therebetween, arranged behind the rear lff 202 and arranged in vertically opposite directions to each other in the figure. A pair of aperture plates 210 that can be used for daytime shifts,
212 and a variable aperture 214.

Here, the first and second color filter plates 204 and 208 are made of, for example, transparent glass plates, with a transparent central part and color filter films of different colors deposited on both sides, as shown in FIG. The first color filter plate 204 has C (cyan) and Y (yellow) color filters, and the second color filter plate 208 has C (cyan) and M (magenta) color filters.

The above-mentioned first and second color filter plates 204 and 208 are measured and calculated by the above-mentioned image sensor 94 by pre-scanning, and the insertion amount of each color filter into the optical path is changed according to the determined exposure correction conditions. It is configured as follows. Color filter plate 204.
Adjustment of the insertion amount of 208 is performed by using gears 204b and 208b provided at the shaft ends of stepping motors 204a and 208a, which serve as drive sources, respectively, and gears 204b and 208b.
Reduction gears 204c and 208c mesh with each other, and racks 204 mesh with the reduction gears 204c and 208c and provided on the respective color filter plates 204 and 208.
d, 208d.

The variable diaphragm 214 is made up of a diaphragm plate 210° 212 and a plate cam 216.
18, 218, 21.9° 219 and aperture plate 210.21
The aperture plates 210, 212 are moved in opposite directions by engaging the bins 220, 220, 221, 221 fixed to the aperture plates 220, 221, and 221 fixed to the aperture plates 210, 212, respectively. Here, variable aperture 2
Similarly, the aperture amount of 14 is set to the stepping motor 214a according to the exposure correction conditions, and the gear 214
This is done by moving the plate cam 216 using the racks 214d, 214c, and 214d, and moving the pair of aperture plates 210, 212 in opposite directions.

In the exposure section unit 18, after the photosensitive material supply section unit 16 is opened, the exposure section frame 98 of the exposure section unit 18 is pivotally supported on the main body 12 of the apparatus via the bin 100. When a problem occurs or during maintenance, the entire exposure section unit 18 is configured to rotate counterclockwise around the bin 100 to open the upper part of the processing section unit 20.

fi In the filling section unit 20, the processing section 22 includes a developing tank 102, a bleaching/fixing tank 104, and washing tanks 106, 108.
are provided in succession, and the photosensitive material 34 (35), which has been developed, bleached, fixed, and washed with water by the processing liquid filled inside these, 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 projection original projecting device 14 of the transparent original projecting device is one of the features of the present invention, and is removably attached to a predetermined position on the original table 80, and is used for projecting the transparent original 111. light source 112 and peripheral illumination correction filter 11
4, a color correction filter 116, a transparent original supporting means 118 that correctly supports the transparent original 111 in the projection optical path, a projection lens 120 that projects the original image, and a mirror that reflects the projected original image and directs it toward an imaging member. 122, a Fresnel lens 124 and a focusing glass 126, which constitute an imaging member for forming a projected original image.

Here, any light source may be used as the projection light source 112 as long as it can form a projected original image on the focusing glass 126 placed on the original platen 80 with a brightness that allows the copying apparatus main body 12 to copy. For example, a halogen lamp or the like can be used.

When using the projection original projector 14, in order to prevent flare etc. from occurring in the obtained copied image, the reflective original scanning light source 84 of the copying apparatus main body 12 is not turned on, and the focus from the projection light source 112 is not turned on. The photosensitive material 36 is exposed at the exposure position 46a by the projection light transmitted through the surface 126a.

Further, the peripheral illumination correction filter 114
The color correction filter 116 is used to correct the decrease in the amount of peripheral illumination at 0, and the color correction filter 116 is used to correct the color balance of the projected original image formed on the viewing glass 126, since the color balance is different between negative and positive films, for example, negative film and slides. To adjust the balance, filters are replaced depending on whether the image is negative or positive.

The transparent document support means 118 is used for both negative and positive documents. teeth,
It is configured so that a special holder for general-purpose negative sleeves (6 domestic frames, 4 overseas frames) is loaded and the negative holder is slid vertically or horizontally.

The projection lens 120 is a lens that projects a transparent original image onto an imaging system.

The Fresnel lens 124 is disposed on the focusing glass 126 to allow light to enter the focusing plane of the focusing glass 126 perpendicularly and to improve light collection efficiency.

Since the lower surface of the focusing glass 126 is placed directly on the document table 80, the focusing surface of the focusing glass 126 is configured to be the lower surface of the focusing glass 126.

Here, the projection optical system of the projection document projection device 14 may be a same-magnification optical system or a variable magnification optical system that enlarges or reduces the image. For example, if the projection optical system is a same-magnification optical system, the focusing surface of the focusing glass that is the imaging member is 5 inches x 6 inches.
(,5'x6'), and if the machine zoom magnification of the copying device main body 12 is 0.5 to 2 times, then
Imprinting can be reduced or enlarged up to x12'.

Next, as shown in FIG. 3, the transparent original light source device 13, which is another feature of the present invention, can be replaced with the projection original projector 14 or the original presser 15, so that the copying machine main body 1
This device is installed and used on a document table 80 on which a reflective document No. 2 is placed, and is used for copying a transparent document 132 placed on the document table 80.

As shown in the figure, the transparent original light source device 13 has a housing 13.
4, a transparent original light source 136 that illuminates the transparent original 132 housed in the housing 134, and a light source 136 that reflects the irradiated light from the light source 136 onto the transparent original 132.
It has a reflector 138 arranged behind the light source device, and a cooling means 140 for cooling the inside of the light source device.

Here, when using a photosensitive material with high exposure sensitivity,
It is preferable that the transparent original light source device 13 is shielded from light from the outside. It is preferable that a plurality of linear light sources are provided as the transparent original light source 136 in order to equalize the amount of light, and in the example shown in FIG. 3, three linear light sources are provided. At the same time, the same number of reflectors 138 as the light sources are provided. Cooling fans are used as the cooling means 140, and two cooling fans are used in FIG. 3.

Furthermore, in the transparent original light source device 13 shown in FIG.
4 and the transparent original 132 may be provided with a heat absorbing glass 142. Further, in order to equalize the amount of light from the light source 134, a diffuser plate 144 such as frosted glass may be provided between the light source 134 and the transparent original 132.

When using the transparent original light source device 3, the transparent original 132
is irradiated by the transparent original light source 134, and the light carrying the transparent original image is transmitted through the original platen 80 and sent to the copying apparatus main body 12.
The photosensitive material 36 enters the first mirror 86 constituting the imaging optical system 82, is reflected, is reflected by the mirror 88, 90, passes through the imaging lens 92, and is at the exposure position 46a.
(34) is exposed. Therefore, as described above, the scanning light source 84 of the imaging optical system 82 is not turned on in this case as well. Here, the first mirror 86 scans the entire surface of the transparent original 132 and exposes the transparent original image onto the photosensitive material 36 (34).

Since the following is the same as when the projection original projector 14 is installed, the explanation will be omitted.

For further information, the copying apparatus according to the present invention is basically constructed as described above, and its operation will be explained below.

As shown in FIG. 1, the projection document projection device 14 is
0, and set the transparent original 111 on the transparent original supporting means 118. For example, this transparent manuscript 1
If 11 is a slide, color correction filter 116
Replace with positive one. When the projection light source 112 is turned on in this manner, it is emitted by the light source 112, and the peripheral light amount correction filter 114 adjusts the amount of light to the color correction filter 1.
The light beam LP whose color balance has been corrected by 16 irradiates a transparent original (slide) 111 .

A light ray t passes through the transparent original 111 and carries the original image,
p passes through a projection lens 120, is reflected by a mirror 122, and is directed toward an imaging member. In the imaging member,
The Fresnel lens 124 adjusts the light beam LP reflected by the mirror 122 so that it enters the focusing plane of the focusing glass 126 perpendicularly, increasing the light collection efficiency and directing it to the focusing glass 1.
26, and an image is formed on the focal plane 126a. At this time,
If the above projection optical system is a same-magnification optical system, the transparent original 11
An image of the same size as 1 is formed.

Furthermore, the projection light that has passed through the focusing glass 126 is incident on the first mirror 86 of the light source unit, and its direction is changed.
The light is reflected by the mirrors 88 and 90, passes through the imaging lens 92, is reflected by the shutter 96 inserted into the optical path as shown by the dotted line in FIG. 1, and enters the image sensor 94.

Here, the copying machine itself! When the copy start button 2 (not shown) is pressed, the imaging optical system 8 of the exposure unit 18
2 is the focus surface 12 of the focus glass 126 on the document table 80
Pre-scanning of the transparent original image formed on 6a is started. At this time, the light source 84 of the copying apparatus main body 12 is not turned on, and the magnification of the imaging optical system 82 is set between 0.5 and 2.0 times.

The first mirror 86 of the light source unit is a focusing glass 126
At the same time, the mirror unit consisting of mirrors 88 and 90 moves during the day at half the speed of the first mirror 86 of the light source unit, The original image formed on the focus glass 126 is prescanned, image information of the original image is read by the image sensor 94, and exposure correction conditions are set.

During pre-scanning, in the example shown in FIG.
The two first and second color filter plates 204 and 208 are both set so that their central transparent portions are inserted into the optical path, and the variable aperture 214 is set to be open.

When the above-mentioned exposure correction conditions are set, the stepping motors 204a, 208a, 21 are operated according to the exposure correction conditions.
4a each rotates a predetermined amount, and the rack 20 rotates accordingly.
4d, 208d.

214d, the first color filter plate 204, the second color filter plate 208, and the plate cam 216 are moved, and necessary color filters such as cyan (C), yellow (Y), etc. are moved in the optical path.
The insertion amount of magenta (M) is obtained, and the necessary aperture amount of the variable aperture 214 is set.

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

On the other hand, while the above-described prescanning and color filter and aperture correction are being performed, a photosensitive material necessary for copying according to the original is selected.

If the transparent original 111 is a slide, a photosensitive material for slide copying is selected, and if it is a negative film, a photosensitive material for negative copying is selected, so that the necessary magazines are loaded in the photosensitive material supply unit 16. preferable.

As an example, when the photosensitive material 36 is selected as the photosensitive material for slide copying and the photosensitive material 36 is selected, when the conveyance motor (not shown) is driven, the conveyance rollers 68a, 68
8b, 74, and 74 feed out the photosensitive material 36 by a predetermined length, and the cutter 70 cuts the photosensitive material 36 into the required length. Thereafter, the transport motor is driven again, and the photosensitive material 36 is sent to the exposure section 46, where it waits just before the exposure position 46a.

When the shutter 96 comes to the position shown by the solid line in FIG. When scanning is started, at the same time, the conveying rollers 58a, 58b, 60a, 60b of the exposure section 46 start scanning and conveying the photosensitive material 36 in synchronization with the scanning speed of the light source unit.

During main scanning, the projection light carrying the original image passes through the focusing glass 126 on which the original image is formed, and is incident on the mirror 86 and reflected, and the mirror rotates in the same direction at 1/2 the speed of the mirror 86. 88.90, passes through an imaging lens 92 whose color and aperture are suitably adjusted, and is reflected at an exposure position 46.
At step a, the photosensitive material 36 that is scanned and conveyed synchronously is exposed.

As this exposure progresses, the photosensitive material 36 is transferred to the conveying roller 58.
The conveyance guide 62 is inserted between a, 58b and 80a, 60b.
is sent downward through. In this case, the switching guide 6
4 does not act on the photosensitive material conveyance path, and the photosensitive material 36 sent from one exposure section 46 moves vertically downward within the conveyance guide 62. Therefore, when the exposed photosensitive material 36 is fed into the processing section 22 of the processing section unit 20, there is no slack in the intermediate portion of the photosensitive material 36 due to the speed difference between the photosensitive material supply section unit 16 and the processing section 22.

When all exposure is completed, the shutter 96 is rotated to the position shown by the dotted line in FIG. 2, and the transport motor (not shown) is rotated in the reverse direction.

Therefore, the exposed photosensitive material 36 is transferred to the conveying rollers 58a and 6.
With the reverse rotation of 0a, the rear end portion moves up the conveyance guide 62, and a portion is sent into the conveyance guide 48c.

Note that, in the present invention, the projection document projection device 14 may be configured to turn off the projection light source 112 when exposure is completed.

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

Thereafter, the conveyance motor 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 the leading end of the photosensitive material 36 is branched from the conveyance guide 62 and delivered to the branch conveyance guide 66.

Therefore, the tip of the photosensitive material 36 is connected to the branch conveyance guide 66.
and is sent to the processing section 22 of the processing section unit 20.

The exposed photosensitive material 36 sent into the processing section 22 is developed by 4 g.
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.

Even if it is the projection original projector 14, the transparent original light source device 1
3, it is exactly the same in that there is an image to be copied on the document table 80, whether it is the transparent original image itself or a projected image.
The operation of the copying machine main body 12 that can be performed with the transparent original light source device 1
Since it is the same as 3, the explanation will be omitted.

In this way, even if the obtained copy image is a transparent original, in the same way as a reflective original, the original image formed on the document table by the transparent original projection device is pre-scanned by the imaging optical system 82 of the copying apparatus main body 12. After setting exposure correction conditions using the image sensor 94 and adjusting the color filters C, M, Y, and aperture in the imaging lens 92 of the imaging optical system 82 according to these conditions, the optimum exposure according to the type of transparent original is determined. Since the material is exposed to light, the images are of extremely high quality and have good color balance. Therefore, the user can easily obtain such a high-quality copy image in one go without making any mistakes.

Further, as shown in FIG. 2, a reflective original 13 is placed on the original table 80.
Even if copying is performed after the document is placed on the original document 130 and pressed with the original presser foot 15, the copying apparatus main body 12 is loaded with a photosensitive material, e.g. 34, slit scanning exposure is performed and the same operation is repeated.

In the example shown in FIGS. 1 to 3, the imaging member is composed of a Fresnel lens 124 and a focusing glass 126.
Any device that can form a projected image of the transparent original 111 may be used, such as a diffuser plate, a Fresnel lens, a halftone screen, or a combination thereof.

In the example shown in FIG. 1, the structure is such that two magazines 30 and 32 can be loaded to use two types of photosensitive materials 34 and 36, but it is possible to use photosensitive materials of 3 fffi or more. , it may be configured to be able to load three or more magazines.

Although the copying apparatus according to the present invention is configured as described above, the present invention is not limited to this, and it goes without saying that various improvements and changes in design can be made without departing from the gist of the present invention. It is.

<Effects of the Invention> As described in detail above, according to the present invention, even if the original is a transparent original, a projection image of the transparent original is formed on the imaging member on the original platen on which the reflective original is placed, or A transparent original image is formed directly on the original platen, and a preliminary scan (prescan) is performed using the imaging optical system of the copying machine body in the same way as for reflective originals.
It is configured to read data with a sensor, set exposure correction conditions, and adjust the color correction, aperture, etc. of the imaging optical system, and then expose the optimal photosensitive material, so even if it is a transparent original, it can be used as a reflective original. Even if there is, the user can easily obtain a high-quality copy image with extremely high image quality and good color balance without making any mistakes in a single operation.

Therefore, according to the present invention, there is no need for trial copying or manual correction by looking at the trial copy image, and there is no failure, so copying costs can be significantly reduced.

Further, according to the present invention, the transparent original projection device for projecting, imaging, or irradiating the transparent original is removably attached to the original table, and can be easily replaced with a document holder for reflective originals. It is easy to switch the copying device from copying to copying a reflective original.

Further, according to the present invention, since it is possible to use the variable magnification mechanism of the imaging optical system of the main body of the copying apparatus, even if the transmission original projection device has a same-magnification optical system, transmission originals such as negatives and slides can be used. can be easily reduced or enlarged. For example, when a transparent original is made into a 4 inch
Copy images from x2.5tn version to Binx10in version can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of an embodiment of a copying apparatus according to the present invention. FIGS. 2 and 3 are schematic sectional views showing another mode of use of the copying apparatus according to the present invention. FIG. 4 is a perspective view showing an embodiment of the imaging lens used in the main body of the copying apparatus shown in FIGS. 1, 2, and 3. FIG. Description of symbols 10... Copying device, 12... Apparatus main body, 13... Transparent original light source device, 14... Projection original projecting device, 15... Presser plate, 16... Photosensitive material supply section Unit, 18... Exposure section unit, 20... Processing section unit, 22... Processing section, 24... Drying section, 26... Reserve liquid storage section, 28... Photosensitive material supply section frame , 30.32...Magazine, 34.36...Photosensitive material, 38...Opening/closing lid, 40.100...Bin, 46...Exposure section, 46a...Exposure position, 54... - Glass plate, 56... Suppression plate, 58a, 58b, 60a, 60b-... Conveyance roller, 64... Switching guide, 80... Document table, 82... Imaging optical system, 84... - Light source, 86.88.90... Mirror 92... Imaging lens, 94... Image sensor, 96... Shutter, 98... Exposure section frame, 102... Developer tank, 104... ...Bleaching/fixing tank, 106.108...Washing tank, 110...Take-out tray, 111...Transparent original, 112...Light source for projection, 114...Peripheral light amount correction filter, 116... - Color correction filter, 118... Transmissive original support means, 120... Lens, 122... Mirror 124... Fresnel lens, 126... Focusing glass, 130... Reflective original, 132... Transparent original, 134... Housing, 136... Transparent original light source, 138... Reflector, 140... Cooling means, 142... Heat absorption glass, 144... Diffusion plate, 200... Front lens group, 202... Rear lens group, 204.208... Color filter plate, 206... Fixed aperture, 210.212... Aperture plate, 214... Variable aperture, 216... Board Cam, 218.219... Slanted groove, 220.221... Pin, 204a, 208a, 214a... Stepping motor, 204b, 208b, 214b, 204c. 208c, 214c...gear,

Claims (1)

[Claims] (1) An exposure unit equipped with an imaging optical system that scans and exposes the image of a reflective original onto a photosensitive material, a photosensitive material supply unit that supplies the photosensitive material to an exposure position, and a processing unit that develops the exposed photosensitive material. a copying apparatus main body having a unit, and an irradiation light source for irradiating a transparent original, capable of forming a transparent original image on a reflective original platen surface of the exposure unit, and detachable from the copying apparatus main body. A flexible transparent original projection device is provided, and a preliminary scan is performed for color correction before the transparent original image formed on the original platen is scanned and exposed onto the photosensitive material by the imaging optical system of the copying apparatus main body. A copying device characterized by: