JPH0291639A - Image exposing device - Google Patents

Abstract

PURPOSE:To automatically set an optimum exposure standard condition based on a corrected exposure condition by adding values decided for an original to be used and a photosensitive material to be used with reference to a standard original and an appropriate photosensitive material to a reference set value and performing processing. CONSTITUTION:Sensors for a red color, a green color and a blue color respectively output electrical signals in accordance with incident light quantity(exposure), which are A/D converted 65 and converted into digital signals in look-up tables 66a, 66b and 66c. The tables 66a-66c hold data for correcting the sensitivity characteristics of sensors 64a-64c and transmit the corrected exposure data to a RAM 71 through an I/O port 68 and a CPU 70. The CPU 70 is actuated according to a program stored in a ROM 72 and performs the calculation and the automatic setting of the exposure standard condition in accordance with the original to be used and the photosensitive material to be used, the reference setting of the exposure standard condition and the control of the sequence of each part in the case of color copying. The values decided for the original to be used and the photosensitive material to be used with reference to the standard original and the appropriate photosensitive material are added to the reference set value to perform the processing.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an image exposure device with good gradation reproduction, and more specifically, to an image exposure device that combines a plurality of originals of different types and a plurality of photosensitive materials of different types. The present invention relates to an image exposure apparatus that can expose an original image under suitable conditions regardless of the combination and has good gradation reproduction when used.

<Prior Art> In a color image forming apparatus, particularly a color copying apparatus, color image forming conditions, particularly exposure standard conditions (for example, filter conditions), are set or adjusted at the time of installation of the apparatus and periodically thereafter, and color originals are A reproduced image with color and density faithful to the image is created. In general, factors that affect the reproducibility of the density, gradation, color, and color balance of reproduced images include variations in the exposure optical system and changes over time, variations in the characteristics of the image recording material and changes over time,
Because of variations in the characteristics of developing materials, changes over time, and fluctuations in developing conditions, it is necessary to set color image forming conditions, especially standard exposure conditions, for each image forming device even if it is the same model. However, even if the image forming apparatus is the same, it is necessary to reset the exposure standard conditions periodically or when changing the developing solution or agent, or the recording material such as the photosensitive material.

Incidentally, currently, photographs and printed matter are often used as color originals in image forming apparatuses, especially color copying apparatuses, but these are subject to differences in coloring materials and differences in visual sensitivity and spectral sensitivity of copying materials. Therefore, when performing color copying, the same copying conditions, particularly exposure conditions, will result in copied images with different color balances, so it is necessary to change the standard exposure conditions depending on the type of document.

Furthermore, in order to obtain an optimal reproduced image according to the type of original, for example, in a silver halide photographic color image forming apparatus,
For photographic originals that require continuous tone and important reproducibility in halftones, a soft sensitive material (photosensitive material) for soft tones with a relatively low γ characteristic is used, and for printed originals with halftone dots, a comparatively low γ characteristic is used. A normal photosensitive material (photosensitive material) for high contrast (high gradation) is used, and the color image forming conditions, especially the standard exposure conditions, are changed depending on the photosensitive material to achieve the density and gradation required for the reproduced image. The color reproducibility and color balance have also been optimized.

<Problems to be Solved by the Invention> By the way, in the case of a copying apparatus in which standard exposure conditions are set for one type of original but do not automatically correct the standard exposure conditions for other types of originals, for example, for color printing originals. Because the spectral density distributions of magenta ink and cyan ink overlap greatly, color copying machines that have set exposure standard conditions (copying conditions) so that the color printed originals can be finished well are not able to reproduce the high magenta density of the printed originals. , the copying conditions are such that magenta density formation is suppressed. Therefore, when a color photo original is copied under these copying conditions, a color copy image with a greenish tinge due to lack of magenta color will be created.

To solve this problem, in conventional color copying machines, copying conditions (color filter adjustment amount, exposure amount, charge amount, development bias amount) are set depending on color photo originals and color print originals. , the operator selects copying conditions according to the type of color document by operating a selection key at his or her discretion.

Furthermore, even if a copying machine is capable of setting standard exposure conditions according to the document type and recording material such as photosensitive material, a photosensitive material suitable for the print document, such as a normal photosensitive material, is usually used for the print document. Standard exposure conditions are set for standard printed originals in case of printing, and standard exposure conditions for standard photographic originals are set for photo originals when using a photosensitive material suitable for photo originals, for example, a soft photosensitive material. There is.

However, depending on the purpose or preference, there may be a need to make a reproduced image of a printed original with a glossy, soft finish, or to make a reproduced image of a photographic original with a glossy finish, just like ordinary paper. There is a desire to keep it in a file, but when trying to reproduce a printed original on soft sensitive material or a photographic original on normal sensitive material, the gradation tends to be distorted because the standard exposure conditions are not appropriate, especially for photographic originals. If you play back with normal photosensitive material, you will not be able to get a good quality playback image.

For this reason, in conventional copying machines, it is necessary for the operator to place a standard original, a test chart, or the like on the document table, perform trial printing or test copying, and then reset standard exposure conditions using selection keys while viewing the reproduced image. On the other hand, in a copying machine that can automatically set, for example, a color copying machine disclosed in Japanese Patent Application No. 82-37249 filed by the present applicant, standard exposure conditions can be set depending on the combination of document type and photosensitive material. Since the exposure conditions can be changed, good images can be obtained with various combinations, but in order to reset the standard exposure conditions, first place the test chart on the platen, prescan, and then make a test copy. make,
Furthermore, it is necessary to place this test copy on the document table again and pre-scan it, which poses problems such as setting exposure standard conditions is troublesome for users and operators.

It is an object of the present invention to solve the problems of the above-mentioned prior art, and to improve the OHP
When using any combination of document types such as manuscripts and illustration manuscripts and photosensitive materials that are properly defined for these G4 types, no matter what type of original 8% type and photosensitive material the combination is. , so that reproduced images with appropriate density, gradation, color, and color balance can be obtained.
An object of the present invention is to provide an image exposure device that can automatically and easily reset appropriate exposure standard conditions.

Means for Solving the Problems> In order to achieve the above object, the present invention identifies at least the types of originals, that is, photographic originals and printed originals, and uses a photosensitive material that is properly determined corresponding to the original type. In an image exposure device that can form an image using As a setting value, the setting value of the exposure standard condition is corrected in advance due to the difference in type between the standard original and the used original and/or the difference between the appropriate photosensitive material and the used photosensitive material. To provide an image exposure device characterized in that a value determined for a used original and a photosensitive material is added to the standard set value for the material, and image exposure is performed based on the modified exposure standard conditions. It is something.

The present invention will be explained in detail below.

The types of originals used in the present invention include printed originals, photographic originals, and 0HP (overhead projector).
) manuscripts, illustration manuscripts, manuscripts that carry images that can be read to obtain color reproduction images, and manuscripts containing a mixture of these manuscripts. Color manuscripts are preferred, but not all manuscripts need to be full-color manuscripts. Often, it may include a black-and-white original, or it may be a black-and-white original.

The photosensitive materials used in the present invention include silver salt photosensitive materials, photosensitive pressure sensitive photosensitive materials, photosensitive resin materials, heat sensitive photosensitive materials, diazo photosensitive materials, as well as electrophotographic photosensitive materials and the like. Any material may be used as long as it can carry the reproduced image as a latent image or a developed image by exposing the image accordingly.

<Operation of the invention> In the present invention, first, a commonly used standard method is used.
f! Exposure standard conditions, such as filter conditions, when exposing an image of one type of standard original that is most suitable for the photosensitive material, ie, Y (yellow), M (magenta), C (
Set the standard conditions for the cyan) filter and D (?IA degree) aperture. These standard exposure conditions serve as reference setting values for the image exposure apparatus of the present invention. This standard setting value may be set by a user or operator making a test copy, looking at the result, and manually correcting various filters, but as disclosed in the above-mentioned Japanese Patent Application No. 62-37249, The settings may be automatically set by making a test copy of the test chart and having the image exposure device of the color copying machine roughly read the results.

Based on the exposure standard conditions, which are the standard setting values set in this way, and the combination of document type and photosensitive material at this time, the exposure standard conditions when changing the document type and/or photosensitive material are set in advance to the standard setting values. Difference ΔY1Δ set according to the original type and/or photosensitive material
Correct and newly set by adding M1ΔC and ΔD. The image exposure apparatus of the present invention exposes this combination of original images to the photosensitive material based on newly set exposure standard conditions to obtain a reproduced image as a developed image or a latent image.

In the image exposure apparatus of the present invention, the differences (ΔY, 6M1ΔC, and ΔD) is preferably uniquely determined in advance. In this way, in an image forming apparatus or a color copying apparatus using the image exposure apparatus of the present invention, for example, the standard setting values themselves using a standard original and photosensitive material can be measured and re-measured periodically using the setting method described above. Even if the reference value is set, it is not necessary to actually measure the difference (6716M1ΔC and ΔD) each time the reference value setting changes, which is extremely convenient. This is because although the reference setting value changes due to changes over time of the image forming apparatus, etc., the difference (6716M1ΔC and ΔD) does not change in the reference setting value.

Therefore, even if the reproduced image formed by exposure by the image exposure device of the present invention is not a standard combination of document type and photosensitive material, the exposure standard conditions may be adjusted or reset by test copying each time. Even though this is not necessary, images with good density, gradation, color and color balance are always obtained.

<Embodiments> Below, an image exposure apparatus according to the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.

FIG. 1 is a schematic cross-sectional view of one embodiment of a silver halide photographic color copying apparatus to which an image exposure apparatus according to the present invention is applied.

As shown in the figure, an apparatus main body 11 of a silver halide photographic color copying apparatus 10 has a photosensitive material supply section unit 12 on the right side, an exposure section unit 14 consisting of the image exposure apparatus of the present invention above, and a processing section below it. 16 is provided.

Roughly speaking, the processing section unit 16 has a processing section 17 at the upper right,
It has a drying section 18 on the upper left side thereof, and a reserve liquid storage section 19 below which stores a supply bottle for replenishing a preliminary processing liquid.

The photosensitive material supplying unit 12 of the silver halide color copying apparatus 10 also includes a pair of magazines 20 and 22 located above and below.
The photosensitive materials 24 and 26 are stored in rolls inside these, and are taken out from the tip to the photosensitive material supply unit 12. - For example, 24 is a photosensitive material (for example, normal photosensitive material) that is most suitable for copying color photographic originals;
6 is a photosensitive material suitable for copying color printed originals (for example,
(soft sensitive material).

The photosensitive material 24 or 26 pulled out from the magazine 20, 22 is sent to the exposure section 28 through a conveyance path of the photosensitive material supply unit 12, which will be described later.

The exposure section unit 14 is a feature of the present invention and is composed of an image exposure device of the present invention, as shown in FIG.
A transparent original platen 30 is installed on the upper part, on which a color original 32 can be placed with the original side facing down, and the color original g432 can be pressed from above with an original presser foot 34 whose underside is white. It is composed of

A white standard plate 35 is attached to the lower surface of the left end of the document table 30, and the white (or gray) balance is adjusted by measuring the reflected light.

In the exposure unit 14, a light source unit 36 is provided that can move eight times in a reciprocating manner parallel to the document table 3o in order to scan the document 32 from the bottom surface. 37, a light source 38, a reflector 39, and a first mirror 40 are built in, and the slit light illuminated by the light source 38, reflected by the document 32, and passed through the slit 37 is reflected by the first mirror 40 and sent to the mirror unit 42. incident on .

The mirror unit 42 synchronously moves in the same direction at 1/2 the speed of the light source unit 36, and faces and parallels the optical path.
The long second mirror 43 and the third mirror are arranged at an angle of 5 degrees.
The mirror 44 rotates to return the light from the light source unit 36 in parallel and make it enter the lens unit 46.

The lens unit 46 includes a front group 47 and a rear group 48 of imaging lenses for forming an image of the original 32 onto the photosensitive material 24 (26) that is conveyed in synchronization with the light source unit 36.
A yellow filter Y, a magenta filter M, and a cyan filter C are arranged between them, and behind the rear group 48 is an aperture 50 consisting of two aperture plates 51 and 52 that move in opposite directions to adjust the amount of light. is arranged. Here, the color filters Y, M, and C are movable in a direction perpendicular to the optical axis, and the amount of insertion thereof adjusts the light quality of the slit light to correct the color balance. Here, the insertion amounts of the color filters Y, M, and C and the aperture amount of the aperture 50 are set according to the exposure standard conditions and the exposure correction conditions. Further, the lens unit 46 moves in the direction of the arrow to adjust the optical path length when changing the copying magnification.

The light whose light quantity, light quality and focus have been adjusted by the lens unit 46 is released when the long shutter 54 is opened (solid line position in the figure).
Two sets of nip rollers 56 that define the exposure area 28 by
．． 57, 58, and 59, the photosensitive material 24 (26), which is sandwiched and conveyed in synchronization with the light source unit 36, is moved to the exposure position 28.
Expose at a.

On the other hand, when setting standard exposure conditions or correcting white balance, the shutter 54 is in the closed state shown by the dotted line in the figure, and the image on the white plate or the original image is captured by the shutter. 54 and inputted to the image sensor 50, the document type, document color density, etc. are determined, and exposure standard conditions (reference setting values) and exposure correction conditions are determined.

The image sensor 60 includes a mirror 61 that horizontally reflects all or part of the slit light reflected by the shutter 54 and incident on the image sensor 60;
A condensing means 6 consisting of a lens, a Fresnel lens, a condensing mirror, etc. that condenses the slit light reflected by the
2, and a measuring means 64 for measuring the slit light collected by the light collecting means 62 in a focused state.

Here, the measuring means 64 is red (red) as shown in FIG.
R) sensor 64a, green (G) sensor 64b1
It is composed of a blue (B) sensor 64c and measures the three primary color components of the reflected slit light, that is, the three colors of R, 0% B. Here, the three colors to be measured are:
It is not limited to the three primary colors R, G, and B.

FIG. 4 is a block diagram of the control system of the image exposure apparatus of the present invention. In the figure, a red sensor 64a, a green sensor 64b, and a blue sensor 64c output electrical signals according to the amount of incident light (exposure amount). This output signal is amplified if necessary, and then sent to the A/D converter 65a.
, 65b, and 65c, where they are converted into digital signals. These digital signals are stored in a lookup table 66a.

Signals are converted at 66b and 66c. These lookup tables 66a-66c are used for sensors 64a-84.
Data for correcting the sensitivity characteristics of c is written, and corrected exposure amount data is output. The signals output from the lookup tables 66a to 66c are I
The data is taken into the RAM 71 via the 10-board 68 and the CPU 70.

The CPU 70 operates according to a program stored in the ROM 72, and calculates and automatically sets exposure standard conditions according to the original document and photosensitive material used, which is a feature of the present invention.
Performs sequence control of each part during reference setting of exposure standard conditions and color copying (including pre-scanning). R
AM71 specifies the standard exposure conditions for image reproduction or copying using a combination of a standard original and a standard light-sensitive material appropriate for this original when installing an applicable image forming device or copying device. It is better to memorize it as a reference setting value.

Furthermore, when installing the apparatus, it is preferable to store in the RAM 71 the difference between the standard exposure conditions and the reference setting values when the original and/or photosensitive material used is changed from the standard original or standard photosensitive material described above. preferable.

The mode designation key 73 selects between reference setting value setting mode and copying mode. The document type input key 74 is a key for selecting or manually inputting the type of document to be used. The photosensitive material diagonal input key 75a is a key for selecting or manually selecting the photosensitive material to be used, and the photosensitive material reading device 75b is a device for automatically reading the photosensitive material to be used. These are readers or barcode readers that read marks, codes, barcodes, etc. attached to photosensitive materials. The copy key 76 is operated to start the reference setting value setting mode or the copy mode. Cyan correction key 77c, magenta correction key 77M, and yellow correction key 77Y
is operated when manually making desired color corrections for the set exposure conditions.

When setting standards/values, setting the exposure standard conditions, setting exposure correction conditions, or manual correction, the CPU
70 is a motor 79C, 79M via a driver 78C, 78M, 78Y.

79Y is driven to adjust the amount of insertion of color filters Y, M, and C into the optical path. Further, the driver 78D is connected to the motor 79
D is driven to move the aperture plates 51 and 52 of the aperture 50 toward or away from each other.

An example of a method for setting exposure standard conditions in the present invention is shown below. In the example below, the photosensitive materials include a soft photosensitive material suitable for photographic originals, a normal photosensitive material suitable for printing originals, and an OH photosensitive material suitable for printing originals.
The description will be made by citing OHP photosensitive materials for P and document types such as print documents, photo documents, and intermediate document types in which printing and photos are mixed.

(1) With soft photosensitive materials, standard exposure conditions are adjusted to ensure an appropriate finish for standard photographic originals, and RAM is stored in advance.
71 is set as a reference setting value.

y=ys M=Mg C=C5 D=Ds Here, when the soft sensitive material is selected by the photosensitive material diagonal input key 758, the CPU 70 automatically reads it from the RAM 71 and sets the standard exposure conditions to the above reference setting values. It is best to configure it so that it is set (auto set up).

Difference ΔY in exposure standard conditions from the standard setting value when copying a printed original or an intermediate type original onto this soft sensitive material! ,
ΔM! , ΔCI r ΔD1 or Y Mg, ΔMM
I! + ΔCMS + ΔDMS is stored in the RAM 71 in advance, and when a print original or an intermediate type original is selected by automatic discrimination based on the original type 74 or color data from the measuring means 64, the CPU 70 sets the exposure standard conditions to the following. Automatically set as follows.

For a printed document, the following is true for an intermediate type document, and the insertion amounts of the Y, M, and C filters and the spacing between the aperture plates 51 and 52 of the aperture 50 are automatically set to these values.

(2) With normal photosensitive materials, standard exposure conditions are adjusted to ensure proper finishing when printing a standard original, and RA
It is set in M71 as a reference setting value.

Y = Y N For a printed original, for an intermediate pole original, M ” M s C” CN D = DH Here, when the normal sensitive material is selected by the photosensitive material manager 75a, the CPU 70 automatically It is preferable that the exposure standard conditions be read from the RAM 71 and set (auto set-up) to the standard exposure conditions.

Difference in exposure standard conditions ΔYP from the standard setting value when copying a photographic original or an intermediate polarity original onto this normal sensitive material
, ΔMP, ΔCP+ ΔDp or Y MNI ΔM
MN+ ΔCMN+ ΔDMN is stored in advance in the RAM 71, and the CPU 70 sets the exposure standard conditions to Automatically set as follows.

becomes.

(3) For OHP photosensitive materials, exposure standard conditions that provide a proper finish for standard OHP originals are set as reference setting values (auto set-up) in the same way as in (1) and (2).

Y=Y.

M=MO C= 00 D=DO Similarly to (1) and (2), the original type is automatically set to: photo original, print original, and intermediate pole original.

As described above, in the present invention, the difference ΔKu (K=Y, M, C, D, U=1, P, Po
, 10. MS, MN, MO) are stored in the RAM 71, but since these values also fluctuate somewhat, the RAM 71
The ΔKU stored in the memory may also be corrected by actually measuring it using a test chart or the like.

For example, for the next reference setting value, + to Δ can be set to the following initial setting value.

Here, the CC value indicates the exposure amount (ILogE) and is 0.01 in density.

As described above, in the present invention, a plurality of original g4f! i
The exposure standard conditions for a combination of different and multiple photosensitive materials are determined by adding ΔKu stored in the RAM 71 to the standard setting values automatically set for each photosensitive material in advance. Even if the original is not suitable for the photosensitive material, standard exposure conditions can be easily set without performing test copies, and good reproduced images can always be obtained.

By the way, as mentioned above, soft photosensitive materials are used for standard photographic originals, and normal photosensitive materials are used for standard printing originals.
For the P sensitive material, standard setting values are set for standard OHP originals, but this setting may be done in any way; for example, by repeatedly making test copies of the standard original on a predetermined photosensitive material, M, Y and D correction keys 77C, 77M, 77
Y and 77D may be manually set, but the method disclosed in Japanese Patent Application No. 62-37249 by the present applicant,
Using the test chart in exposure standard condition setting mode,
A preferred method is to make a second copy and read the test copy with a measuring means to determine standard exposure conditions and use them as standard set values.

Such standard setting values may be set for each photosensitive material used, but the differences ΔY, ΔM, and ΔC9ΔD in the standard setting values between the photosensitive materials are determined in advance and stored in the RAM 71. A test copy is made only for a certain reference photosensitive material, the reference setting values are corrected, and the reference setting values for other photosensitive materials are determined by adding the differences ΔY, ΔM, ΔC1ΔD between the photosensitive materials to the corrected reference setting values. You can leave it as is. Alternatively, first, for example, when setting up the device, the initial reference setting values for multiple photosensitive materials are stored in the RAM 71, and the reference setting values are corrected for only one photosensitive material, and the difference between the initial value and the corrected value is calculated. , the difference may also be calculated for each other photosensitive material and the reference set value may be set.

In the present invention, the type of original to be used may be determined visually and selected using the original type input key 74, or by automatic determination. Patent application by person 1986-1977
This can be carried out by the method disclosed in No. 7, etc.

The image exposure apparatus according to the present invention is basically constructed as described above, but with reference to FIG. The processing system will be explained.

At the start of copying, for example, a normal photosensitive material 26 suitable for a printing document is supplied from the photosensitive material supply unit 12 to the exposure unit 28, but as described above, the photosensitive material supply unit 12 A photosensitive material supply section frame 80 has a photosensitive material conveyance path, a magazine 20.22 is detachably attached thereto, and an opening/closing opening i81 is provided on the outside of the magazine 20.22. Further, the photosensitive material supply section frame 81 is pivotally supported to the apparatus main body 11 via a pin 82.

The ejection port for the photosensitive material 24 of the magazine 20 and the magazine 2
In addition, cutters 86a and 86b for cutting the photosensitive material 24, 26 to a predetermined length are provided corresponding to the outlet for taking out the photosensitive material 26 of No. Conveyance guides 88a and 88b forming channels are provided. Above the conveyance guide 88b is a conveyance nip roller 84C1, above which is a conveyance guide 88 that merges with the conveyance guide 88a.
c is provided.

Furthermore, after merging, the tree transport path forms an inverted U-shape.
Conveyance guides 88d, 88e, 88f188g, and 88h are provided. Here, the conveyance guide 88f is provided between the conveyance nip rollers 56 and 57 and between 58 and 59, and limits the exposure section 28. Further, conveyance nip rollers 84d and 84e are provided between conveyance guides 88a and 88d and between 88d and 88e.

A switching guide 90 is provided between the conveyance guides 88g and 88h, and the photosensitive material 26 (24
) to the processing section 17 of the processing section unit 16.

In the processing section unit 16 that processes the exposed photosensitive material 26 (24), a developing tank 92, a bleaching/fixing tank 94, and a washing tank 96, 98 are successively provided in the processing section 17, and the insides of these tanks are filled with water. Developing, bleaching, fixing,
The photosensitive material 26 (24) that has been washed with water is sent to the drying section 18.

In the drying section 18, the photosensitive material 26 (24) after being washed with water is dried and sent onto the take-out tray 100.

Further, the exposure section unit 14 has its frame 102 pivotally supported by the main body of the apparatus via a bin 104, and when adjusting, jamming, or maintaining the processing section unit 16, the exposure section unit 14 is rotated counterclockwise after opening the photosensitive material supply section unit 12. The upper part of the processing section unit 16 is opened when the upper part of the processing section unit 16 is rotated.

Although the image exposure apparatus according to the present invention has been described as a representative example in which the image exposure apparatus is applied to a silver halide photographic color copying apparatus shown in FIG. Of course, the present invention is applicable to any copying apparatus or image forming apparatus, such as an electrophotographic color copying apparatus, a thermal transfer color copying apparatus, an inkjet color copying apparatus, a laser color copying apparatus, a video color copying apparatus, etc.

Although the image exposure apparatus according to the present invention is basically configured as described above, the present invention is not limited to this.
For example, the difference ΔY, ΔM from the standard setting value of the exposure standard conditions,
Various improvements and design changes are possible without departing from the gist of the present invention, such as ΔC1ΔD not being the preset value as it is, but various modifications to the preset value. .

<Effects of the Invention> As described in detail above, according to the present invention, originals other than combinations in which appropriate standard exposure conditions of light-sensitive materials for used originals are set as standard setting values. Regardless of the type and/or photosensitive material used, for example, copying a printed original onto a photosensitive material for a soft finish, or conversely, copying a photographic original onto a photosensitive material for printing. The optimal exposure standard conditions for the combination of the original and the photosensitive material used can be automatically set from the standard setting values, so the density and gradation can be adjusted automatically without having to set the exposure standard conditions using test copies or test charts before exposure. A reproduced image with good tone, color, and color balance can be obtained.

Therefore, according to the present invention, it is possible to use not only a certain combination of original type and photosensitive material but also various combinations, so that it is possible to obtain copied images and reproduced images that are good and have unprecedented variations. Can be done.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view of one embodiment of a silver halide photographic color copying apparatus to which an image exposure apparatus according to the present invention is applied. FIG. 2 is a schematic cross-sectional view of an example of an image exposure apparatus according to the present invention. FIG. 3 is a front view of one embodiment of a sensor used in the image exposure apparatus according to the present invention. FIG. 4 is a block diagram showing a control system of the image exposure apparatus of the present invention. Explanation of symbols 10...Silver halide photographic color copying device, 12...Photosensitive material supply section unit, 14...Exposure section unit, 16...Processing section unit, 28...Exposure section, 28a. ...Exposure position, 30... Original table, 32... Color original, 36... Light source unit, 37... Slit, 38... Light source, 39... Reflector, 40.43, 44. 61...Mirror 42...Mirror unit, 46...Lens unit, 47...Imaging lens front group, 48...Imaging lens rear group, 50...Aperture, 51.52...・Aperture plate, 54...Shutter, 56.57, 58.59...Nip roller, 60...
・Image sensor, 62...Condensing means, 64...Measuring means, 64a, 64b, 64c...Sensor 65a, 65b, 85c--A
/D converter, 66a, 66b, 66c...Lookup table, 68...I10 port, 70...Data processing unit, 71...RAM. 72...ROM. 73...Mode designation key 74...Original type entry key 75a...Photosensitive material oblique entry key 75b...Photosensitive material reading device 76...Copy keys 77C, 77M, 77Y...Correction Key 78C, 78M
, 78Y, 78D...driver, 79C, 79M, 7
9Y, 79D...Motor, Y, M, C...Color filter Patent applicant Fuji Photo Film Co., Ltd. Agent Patent attorney Minoru Watanabe, 4

Claims (1)

[Claims] (1) In an image exposure device that is capable of identifying at least the document type of a photographic document and a print document, and performing image exposure using a photosensitive material appropriately determined according to the document type, The exposure standard conditions, which are set in advance when performing image exposure of a standard original onto a photosensitive material appropriate for the standard original, are used as standard setting values to determine the difference in type between the standard original and the used original and/or the appropriate exposure. The setting values of the standard exposure conditions are corrected due to the difference between the materials and the photosensitive materials used, and the values determined for the originals and photosensitive materials used are added to the standard set values for the standard originals and appropriate photosensitive materials, which serve as a reference. An image exposure apparatus characterized by performing image exposure based on the corrected exposure standard conditions.