JPS63261246A - Image light exposing device - Google Patents

Abstract

PURPOSE:To obtain a proper exposure result by providing two cathode-ray tubes which have screen panel parts. CONSTITUTION:A control part 10 displays an image based upon a red primary color signal component SR on the screen panel part 12 of a cathode-ray tube 8. On the other hand, an image based upon a blue primary color signal components SR is displayed on a screen panel part 14 by a video signal switching part 7 with a control signal CS2, a filter element 18 is put opposite the panel part for a specific period by a filter switching part 11 under the control of the signal CS2, and then a filter element 19 is put opposite an image based upon a green primary color signal component SG. Then exposure using the image light of the panel 12 by the component SR is performed so as to set capsules selectively, and exposure using image light which is emitted by the image based upon the component SB and image light passage through the element 19 by the component SG is performed for the panel part 14 simultaneously so while their exposure times are controlled independently. Consequently, a proper exposure result is obtained.

Description

[Detailed description of the invention] The present invention will be explained in the following order.

A. Field of industrial application B. Outline of the invention C. Prior art D. Problem to be solved by the invention E. Means for solving the problem F. Effect G. Example G-1 First example (Fig. 1 to Figure 4) G-, 2 Second embodiment (Figures 5 to 8) G-3 Modification H Effect of the invention A Industrial application field The present invention is sensitive to light in different wavelength ranges. The present invention relates to an apparatus for exposing a sheet-like light-sensitive material, which has a surface in which a large number of microcapsules of a plurality of types containing a photosensitizer that is cured by curing and a dye or a dye precursor different from each other, mixed and dispersed, to image light.

B. Summary of the Invention The present invention provides a large number of first microcapsules containing a photosensitizer that cures in response to light in a first wavelength range and a first dye or dye precursor; a large number of second microcapsules containing a photosensitizer that cures in response to light in the third wavelength range and a second dye or dye precursor; In an apparatus that exposes a photosensitive material having a surface in which a large number of third microcapsules containing the dye or dye precursor No. 3 are mixed and dispersed with image light, each inner surface is used as an exposure source for the photosensitive material. Using first and second cathode ray tubes each having a screen panel portion with a fluorescent surface formed on its side, the first cathode ray tube is supplied with a first primary color component of a color video signal, and the fluorescent surface is formed on the first cathode ray tube. From 1st. Of the second and third microcapsules, the one with the lowest sensitivity to the light that causes curing reacts with the photosensitizer contained in the one that cures. emitting one of the light in the second and third wavelength ranges;
An image based on the first primary color component of the video signal is displayed on the screen panel section, and a second cathode ray tube is supplied with the second and third primary color components of the color video signal to display fluorescent light. From the side, 1st. Among the second and third microcapsules, except for the one with the lowest sensitivity to the light that causes curing, the photosensitizers contained in the second and third microcapsules are sensitive and cured. Two of the lights in the second and third wavelength ranges are emitted to display an image based on the second and third primary color components of the video signal on the screen panel section;
By projecting the images displayed on the screen panel portions of the first and second cathode ray tubes onto the photosensitive material and exposing the photosensitive material, the photosensitive material can be exposed to light according to the color image. 1st. This can be carried out efficiently while taking into account the difference in sensitivity to light that causes curing between the second and third microcapsules, and the exposure time can be shortened.

C. Conventional technology A plurality of microcapsules containing a dye or a dye precursor and a photosensitizer that is cured by a photopolymerization reaction caused by light in a relatively short wavelength range are formed on the surface of a sheet-like substrate. A photosensitive sheet consisting of a large number of mixed and dispersed microcapsules is irradiated with light in a predetermined wavelength range to selectively harden each type of mixed and dispersed microcapsules, and then incorporated into the microcapsules of the photosensitive sheet. A developing sheet with a layer of a color developing substance that reacts with the dye or dye precursor to develop a color depending on the type of dye or dye precursor is layered and pressed together to produce an uncured photosensitive material. For example, a method of forming a color image by crushing the microcapsules containing the agent and causing the color developer of the developing sheet to develop colors according to the pigments contained in the crushed microcapsules has been proposed, for example, in JP-A-Sho. It has been proposed as described in Japanese Patent No. 50-30537.

In order to obtain a copy of a color image using such a color image forming method, for example, first, second and third photosensitizers that are cured upon exposure to light in different wavelength ranges; 1. Reacts with the color developing substance of the developing sheet to develop yellow, magenta and cyan colors respectively.
the second and third dyes or dye precursors, the first photosensitizer and the first dye or dye precursor, the second photosensitizer and the second dye or dye precursor, and Third
A photosensitive sheet is prepared in which a large number of three types of microcapsules containing a combination of a photosensitizer and a third dye or dye precursor are mixed and dispersed. A color image to be copied is captured by a developing means, and a color video signal consisting of primary color signals formed according to the three primary color components of blue, green and red of the color image is supplied to a multicolor cathode ray tube. . In such a multicolor cathode ray tube, a fluorescent surface formed on the inner surface of the screen panel emits light covering the entire wavelength range in which the photosensitizer contained in each of the three types of microcapsules is cured. Then, an image based on the color image signal is displayed on the screen panel section.

Then, between the photosensitive sheet and the screen panel part of the multicolor cathode ray tube, only the light in the wavelength range that the first photosensitizer is sensitive to and cures is passed through, and the first filter and the second photosensitizer are connected to each other. A second filter that passes only light in a wavelength range to which the photosensitive agent is sensitive and hardens, and a third filter that passes only light in a wavelength range to which the third photosensitizer is responsive and hardens, and the photosensitive sheet is An exposure state in which light is irradiated through the first filter to cause curing of the first photosensitizer from a color image obtained on the screen panel portion of the multicolor cathode ray tube, and curing of the second photosensitizer occurs. The photosensitive sheet is sequentially placed in an exposure state in which it receives light irradiation through the second filter and in an exposure state in which it receives light irradiation through the third filter that causes curing of the third photosensitizer, thereby causing the development of the photosensitive sheet. Curing and development of the developing sheet in response to the image light from the multicolor cathode ray tube through the first filter inside the microcapsule containing the first dye or dye precursor that causes the color developing substance of the sheet to develop a yellow color. Curing in response to image light from a multicolor cathode ray tube via a second filter inside a microcapsule containing a second dye or dye precursor that causes a color developing substance to develop magenta color, and curing of a developing sheet. Curing occurs in response to the image light from the multicolor cathode ray tube passing through the third filter inside the microcapsule containing the third dye or dye precursor that causes the color developer to develop a cyan color.

Thereafter, a developing sheet provided with a layer of a color developing substance is superposed and pressed onto the photosensitive sheet in which the interiors of the three types of microcapsules have been selectively hardened, and the interiors of the photosensitive sheet are hardened. Microcapsules that have not been crushed are crushed.

As a result, magenta and cyan coloring areas are formed in the color developing substance layer provided on the developing sheet at positions corresponding to the crushed microcapsules.

A cyan and yellow coloring area and a yellow and magenta coloring area, that is, a blue coloring area, a green coloring area, and a red coloring area are formed, and a copied image corresponding to the color image to be copied is formed. You will get it.

In addition, as another method for obtaining color images using the photosensitive sheet and developing sheet as described above, primary color signals formed according to the three primary color components of blue, green, and red of the color image are incorporated into microcapsules. A monochromatic cathode ray tube that displays an image by emitting light that causes curing of a first photosensitizer contained in a microcapsule, and a monochromatic cathode ray tube that displays an image by emitting light that causes curing of a second photosensitizer contained in a microcapsule. Supplying light that causes curing of the third photosensitizer contained in the tube and the microcapsule to each of the monochromatic cathode ray tubes that display an image, causing the three monochromatic cathode ray tubes to simultaneously emit light; The photosensitive sheet is placed in the first layer of the microcapsule. By placing the second and third photosensitizers in an exposed state where they are irradiated with light that causes curing, the same as described above can be obtained.
It is also conceivable that selective curing of the interior of the three types of microcapsules in the photosensitive sheet may occur.

D Problems to be Solved by the Invention However, when obtaining a copy of a color image using a photosensitive sheet and a developing sheet as described above,
When the photosensitive sheet is exposed to light using a multicolor cathode ray tube and first, second, and third filters that transmit light in three different wavelength ranges, the photosensitive sheet is Light that causes curing of the first photosensitizer contained in one of the three types of microcapsules, light that causes curing of the second photosensitizer contained in the other one, and Three exposures are performed with light that causes curing of the third photosensitizer contained in the remaining one, and the exposure process that is repeated three times increases the length of time it takes to copy a color image. There is a problem in that this results in increased complexity of the work.

In addition, the three types of microcapsules dispersed on the substrate of the photosensitive sheet have different sensitivities to the light that causes curing of the photosensitizer, for example, the wavelength range of light to which the photosensitizer is sensitive is long. It is assumed that the sensitivity decreases as the wavelength range increases. Therefore, assuming that the intensity of light from each exposure source is approximately equal, the exposure time for each of the three types of microcapsules will also be different. Therefore, as mentioned above, when three monochromatic cathode ray tubes are used and the light is emitted simultaneously to expose a photosensitive sheet, the intensity of the light emitted by each of the three monochromatic cathode ray tubes is made approximately equal. of the three types of microcapsules, the required exposure time is
It is determined that the sensitivity of the built-in photosensitizer to light that causes curing is the lowest. Therefore, among the three types of microcapsules, the two monochrome cathode ray tubes, which expose the one with the lowest sensitivity to light that causes curing of the photosensitizer contained therein, are different from the three types of microcapsules. After the exposure of the two types of microcapsules other than the one with the lowest sensitivity to light that causes curing of the built-in photosensitizer is completed, it is not used effectively, resulting in extremely inefficient exposure. Processing will be carried out.

In view of these points, the present invention provides the first and second aspects of the invention. 2nd and 3rd
The first layer is cured by exposure to light in the wavelength range of . second and third photosensitizers; the second and third dyes or dye precursors, the first photosensitizer and the first dye or dye precursor, respectively;

A large number of three types of microcapsules containing a combination of a second photosensitizer and a second dye or dye precursor, and a third photosensitizer and a third dye or dye precursor are mixed. Exposure of a sheet-like photosensitive material having dispersed surfaces in accordance with a color image,
It is an object of the present invention to provide an image light exposure device that can efficiently perform exposure and obtain appropriate exposure results in a shortened exposure time.

E. Means for Solving the Problems In order to achieve the above-mentioned object, the image light exposure apparatus according to the present invention comprises a photosensitizer that cures in response to light in a first wavelength range and a first dye or pigment. a large number of first microcapsules containing a precursor, a large number of second microcapsules containing a photosensitizer that cures in response to light in a second wavelength range, and a second dye or dye precursor; , and a large number of third microcapsules containing a photosensitizer that cures in response to light in a third wavelength range and a third dye or dye precursor are mixed and dispersed on the surface of a sheet-like substrate. a support part for supporting a photosensitive material made of a photosensitive material; a screen panel part having a fluorescent surface formed on the inner surface of the support part; and a screen panel part for supplying a first primary color component of a color video signal. Then, from the fluorescent surface, the first. A photosensitive agent incorporated in the second and third microcapsules that has the lowest sensitivity to light that causes curing reacts and cures;
emitting one of the lights in the second and third wavelength ranges;
a first cathode ray tube that displays an image based on the primary color components of the color video signal on the screen panel section; is supplied, and from the fluorescent surface, the first. Among the second and third microcapsules, the photosensitizer contained in the microcapsules other than the one with the lowest sensitivity to the light that causes curing reacts and hardens. a second cathode ray tube that emits two of the wavelength ranges of light to display an image based on the second and third primary color components of the video signal on the screen panel; An image projection section is provided for projecting an image displayed on the screen panel section of each of the two cathode ray tubes onto a photosensitive material and exposing the photosensitive material.

F Effect In the image light exposure apparatus according to the present invention configured as described above, the first primary color component of the color video signal is supplied to the first cathode ray tube, and the second and third primary color components of the color video signal are supplied to the first cathode ray tube. primary color components are supplied to a second cathode ray tube to
An image based on the first primary color component of the color video signal is displayed on the screen panel of the cathode ray tube of the photosensitive material.
．． Among the second and third microcapsules, the photosensitizer incorporated in the one having the lowest sensitivity to the light that causes curing is sensitive and cured;
At the same time, an image based on the second and third primary color components of the color video signal is displayed on the screen panel section of the second cathode ray tube. Among the second and third microcapsules, excluding the one with the lowest sensitivity to light that causes curing, the other two types of microcapsules are sensitive to and cured by the photosensitizers incorporated therein. ．． Two light sources of light in the second and third wavelength ranges are obtained. And the first
and the images obtained on the screen panel section of the second cathode ray tube are projected onto the photosensitive material by an image projection section,
As a result, the photosensitive material is exposed to image light from each of the screen panel sections of the first and second cathode ray tubes.

Therefore, the image light from the screen panel section of the first cathode ray tube causes the first . The first and second microcapsules in the photosensitive material are selectively exposed to light of the second and third microcapsules that have the lowest sensitivity to light that causes curing, and the image light from the screen panel section of the second cathode ray tube is applied to the second and third microcapsules. Of the second and third microcapsules,
Selective exposure for the other two types of light, excluding the one with the lowest sensitivity to light that causes curing, is carried out simultaneously and under conditions such as each exposure time that can be set independently, As a result, exposure of the photosensitive material according to the color image is efficiently carried out, and the first . Appropriate exposure results can be obtained for each of the second and third microcapsules.

G Example G-1 First Example (FIGS. 1 to 4) FIG. 1 schematically shows an example of an image light exposure apparatus according to the present invention.

In this example, the original 2 is placed on the photosensitive sheet 30.
Exposure is performed according to the color image above.

The photosensitive sheet 30, as shown enlarged in FIG.
On the surface of the sheet-like substrate 32, first, second and third photosensitizers which are cured by exposure to light in different wavelength ranges; The second and third dyes or dye precursors, such as the first. The second and third leuco dyes are respectively the first photosensitizer and the first leuco dye, the second photosensitizer and the second leuco dye, and the third photosensitizer. A large number of three types of microcapsules a, b, and C, which contain a combination of a leuco substance and a third dye, are mixed and dispersed. The first . The second and third photosensitizers are shown by curve A in FIG. 4, which shows the spectral sensitivity characteristics in which the vertical axis represents the exposure intensity per unit area and the horizontal axis represents the wavelength. As shown by curve B, the first photosensitizer is sensitive to light in a wavelength range that peaks at a wavelength of about 450 nm, and as shown by curve B, the second photosensitizer peaks at a wavelength of about 550 nm. As shown by curve C, the third photosensitizer is cured in response to light in a wavelength range having a peak wavelength of approximately 650 nm. .

In addition, microcapsules a to c each contain the first to third
The first to third leuco dyes incorporated together with the photosensitizer react with the color developing substance of the developing sheet used in connection with the photosensitive sheet 30, and convert the color developing substance of the developing sheet into yellow. , is said to have the property of producing colors of magenta and cyan.

As can be seen from the spectral sensitivity characteristics shown in FIG.
The third photosensitizer has a sensitivity to light in a wavelength range that peaks at a wavelength of about 650'nn+ of the third photosensitizer, and has a sensitivity to light in a wavelength range of about 45'n+ for each of the first and second photosensitizers.
It is said that the sensitivity is lower than the sensitivity to light in the wavelength range that peaks at 0 nm and 550 nm. Therefore, among microcapsules a to C, microcapsule C has the lowest sensitivity to light that causes curing. It is said that

The color image on the original document 2 is captured by an imaging means included in the video signal forming section 4, and from the video signal forming section 4,
Blue color image on manuscript 2.

Blue primary color signal components S3. formed according to the three primary color components of green and red, respectively. Green primary color signal component SG
A color video signal consisting of the red primary color signal component SR and the red primary color signal component SR is obtained. Then, among the blue primary color signal component SB, green primary color signal component SG, and red primary color signal component SR from the video signal forming unit 4, the red primary color signal component SR is supplied to the video signal supply unit 6 in the image display unit 5, Further, the blue primary color signal component SIl and the green primary color signal component SG are supplied to the video signal switching section 7 in the image display section 5.

The image display unit 5 includes a first cathode ray tube 8 connected to a video signal supply unit 6 and a second cathode ray tube 9 connected to a video signal switching unit 7, and is configured to form a video signal. The red primary color signal component SR supplied from the section 4 to the video signal supply section 6 is supplied to the first cathode ray tube 8 under control based on the control signal C81 from the control section 10. 4 to the video signal switching unit 7, the blue primary color signal component SR and the green primary color signal component S6 are selectively switched to the second cathode ray based on the control signal C82 from the control unit 10 (under control). The first cathode ray tube 8 has a fluorescent surface 1 on the inner surface of its screen panel section 12.
3 is provided, and this fluorescent surface 13 is scanned and emitted by an electron beam modulated based on the red primary color signal component SR supplied from the video signal supply section 6, and an image based on the red primary color signal component SR is generated. Displayed on the screen panel section 12. Further, the second cathode ray tube 9 is also provided with a fluorescent surface 15 on the inner surface of its screen panel section 14, and this fluorescent surface 15 serves as a blue primary color signal component SR selectively supplied from the video signal switching section 7. and green primary color signal component SG, and are scanned and emitted by an electron beam modulated based on each of green primary color signal component SG, and blue primary color signal component S! + and green primary color signal components Sc.

An image based on each of the images is displayed on the screen panel section 14.

The control signal cs2 from the control section 10 can also be supplied to the filter switching section 11 in the image display section 5.

The filter switching section 11 drives the filter section I7 provided for the second cathode ray tube 9 in the image display section 5 based on the control signal C82, and drives the first filter element 18 provided in the filter section 17. and second filter element 19
The screen panel section 14 of the second cathode ray tube 9 is switched. This switching of the first and second filter elements 18 and 19 causes the blue primary color signal component S to be applied to the screen panel section 14 of the second cathode ray tube 9.
When an image based on L+ is displayed, the first filter element 18 is connected to the screen panel section 14 of the second cathode ray tube 9.
Further, when an image based on the green primary color signal component S6 is displayed on the screen panel section 14 of the second cathode ray tube 9, the second filter element 19
This is done so that the second cathode ray tube 9 is placed at a position facing the screen panel portion 14 of the second cathode ray tube 9.

When the fluorescent surface 13 of the first cathode ray tube 8 is scanned by an electron beam to emit light, the first cathode ray tube 8 has an emission spectrum in which, for example, the vertical axis represents the emission intensity and the horizontal axis represents the wavelength. In FIG. 2A showing the characteristics, as shown by curve Q1, the third photosensitizer contained in the microcapsules C in the photosensitive sheet 30 is sensitive to light in a wavelength range that peaks at a wavelength of about 650 nm. It is said to emit light that causes curing. Also,
When the fluorescent surface 15 of the second cathode ray tube 9 is scanned by an electron beam to emit light, the second cathode ray tube 9 has a light emitting characteristic in which, for example, the vertical axis represents the light emission intensity and the horizontal axis represents the wavelength. In FIG. 2B, as shown by a curve Q2, light in a wavelength range having a peak at a wavelength of about 450 nm, that is, microcapsules a in the photosensitive sheet 30
The light that the first photosensitizer built in is sensitive to and hardens is emitted through the first filter element 18 in the filter section 17, and in FIG. 2B, the light is shown by curve Q3. As shown in FIG.
The filter section 17 transmits light that causes the second photosensitizer contained in the microcapsule b to be sensitive to and harden.
It is assumed that the light will be emitted through the second filter element 19 at.

As described above, the images obtained on the screen panel section 12 of the first cathode ray tube 8 and the screen panel section 14 of the second cathode ray tube 9 in the image display section 5 are obtained from the images of the first cathode ray tube 8. What is obtained on the screen panel section 12 is reflected by a half mirror 20 and guided to an image projection section 21 formed including a lens 22 and a shutter 23 . The image obtained is transmitted through the half mirror 20 through the first filter element 18 or the second filter element 19 in the filter section 17 and is transmitted to the image projection section 2.
It will lead you to 1. Then, each image is displayed on the image projection unit 21.
Accordingly, the photosensitive sheet 30 supported by the support section 25
projected onto the photosensitive sheet 30, thereby
Exposure with image light from an image obtained on the screen panel portion 12 of the first cathode ray tube 8 and exposure with image light from an image obtained on the screen panel portion 14 of the second cathode ray tube 9 are performed.

Under such circumstances, the red primary color signal components S and l from the video signal forming section 4 are supplied to the first cathode ray tube 8 by the video signal supply section 6 controlled by the control signal CS from the control section 10. When an image based on the red primary color signal component SR is displayed on the screen panel section 12 of the first cathode ray tube 8, the video signal switching section 7 controlled by the control signal C32 from the control section 10, for example, first The blue primary color signal component S8 from the video signal forming section 4 is supplied to the second cathode ray tube 9, and an image based on the blue primary color signal component S8 is displayed on the screen panel section 14 of the second cathode ray tube 9. , the filter switching unit 11 controlled by the control signal C32 maintains a state in which the first filter element 18 in the filter unit 17 faces the screen panel unit 14 of the second cathode ray tube 9 for a predetermined period, and then , the green primary color signal component S6 from the video signal forming section 4 is replaced with the blue primary color signal component SB,
An image based on the green primary color signal component S6 is displayed on the screen panel section 14 of the second cathode ray tube 9, and the filter section 17 is supplied to the second cathode ray tube 9 by the filter switching section 11 controlled by the control signal C82. A state in which the second filter element 19 is opposed to the screen panel section 14 of the second cathode ray tube 9 is maintained for a predetermined period.

Therefore, the photosensitive sheet 30 supported by the support section 25 is exposed to the image light from the image obtained on the screen panel section 12 of the first cathode ray tube 8 based on the red primary color signal component SR. Microcapsules Cf [exposure for selectively curing is performed, and at the same time, light is emitted from the image obtained based on the blue primary color signal component SR to the screen panel section 14 of the second cathode ray tube 9, and the first light in the filter section 17 is ) Exposure with image light that has passed through the filter element 18, followed by
Exposure to image light emitted from an image obtained on the screen panel section 14 of the second cathode ray tube 9 based on the green primary color signal component S and passed through the second filter element 19 in the filter section 17, that is, the photosensitive sheet 30 Exposure to selectively harden the microcapsules a in the photosensitive sheet 30 and subsequent exposure to selectively harden the microcapsules b in the photosensitive sheet 30 are performed.

In this way, among the microcapsules a''-c on the photosensitive sheet 30, microcapsules C, which have the lowest sensitivity to light that causes curing, are exposed to light for selective curing, and the remaining microcapsules a and b are exposed to light. Exposure for selective curing is performed simultaneously and in a state where each exposure time can be controlled independently.As a result, the control signals CS and C82 from the control unit 10 are controlled appropriately. By setting this, the exposure process for the photosensitive sheet 30 can be performed efficiently, and appropriate selective exposure results can be obtained for each of the microcapsules a to C under a shortened exposure time. .

Note that after the photosensitive sheet 30 is exposed to light,
A developing sheet provided with a color developer layer is superimposed on the surface of the photosensitive sheet 30 on which the microcapsules a to C are arranged, and the photosensitive sheet 3o and the developing sheet are pressed by a pair of rollers to form microcapsules a- The C that is not cured inside is crushed, and the leuco dye inside reacts with the color developing material layer of the developing sheet.
The color developer layer develops yellow, magenta, and cyan depending on the leuco dye, and these yellow, magenta, and cyan colors produce blue, which corresponds to the image on the document 2.
A color image of the three primary colors of green and red is obtained, and the image on the original 2 is copied onto the developer sheet as a color image.

c-3 Second Embodiment (Figs. 5 to 8) Fig. 5 schematically shows another example of the image light exposure apparatus according to the present invention.
In the drawings, parts and members corresponding to the respective parts shown in FIG. 1 are shown with the same reference numerals as those in FIG. 1, and repeated explanation thereof will be omitted.

In this example as well, as shown in the enlarged view of FIG. In this example, in the example shown in FIG. 1, the image display section 5
In place of the video signal switching unit 7, a video signal supply control unit δ1 is provided, and in place of the combination of the second cathode ray tube 9 and the filter unit 17, a second cathode ray tube configured as a beam index type color cathode ray tube is provided. This corresponds to one having a cathode ray tube 45.

Then, the video signal supply control section 51 controls the video signal forming section 4
The blue primary color signal component S and the green primary color signal component Sc are supplied from the controller 10, and are controlled by a control signal cs2' from the controller 10. On the other hand, the red primary color signal component SR from the video signal forming section 4 is
The video signal is supplied to the first cathode ray tube 8 via the video signal supply section 6, and the first
An image based on the red primary color signal component SR is displayed on the screen panel section 12 of the cathode ray tube 8 .

The second cathode ray tube 45, which is a beam index type color cathode ray tube, is provided with a fluorescent surface section 48 on the inner surface of its screen panel section 47. The electron beam is scanned by an electron beam modulated based on the blue primary color signal component S++ and the green primary color signal component S6, which are supplied under the control of the control signal C32' from 10. In the fluorescent surface portion 48 formed on the inner surface of the screen panel portion 47 of the second cathode ray tube 45, for example, as shown enlarged in FIG. 6, two types of fluorescent stripes j2. and 12 via a blank drive 52 between them,
They are arranged in a predetermined repeating order. Fluorescent stripe l, and! ! 2 is indicated by a curved line in FIG. 7, which shows the emission spectrum characteristics in which the vertical axis represents the emission intensity and the horizontal axis represents the wavelength when excited by an electron beam, respectively. As if,
The phosphor stripe 11 emits light in a wavelength range that peaks at a wavelength of about 450 nm, and as shown by the curve L2, the phosphor stripe 7!2 emits light in a wavelength range of about 550 nm.
It is said to emit light in a wavelength range that has a peak in odor. In addition, the fluorescent surface portion 48 includes
As shown in FIG. 8, which shows a cross section along the line, the phosphor stripes β1 and the phosphor stripes are formed on the aluminum film 54 that covers the phosphor stripes β1 and 12 and the black stripe 52 from the inside of the screen panel section 47. Black stripe 5 interposed between light stripe 12
A plurality of index phosphor stripes 53 with positions corresponding to every other one of the phosphor stripes L
, and 7!2.

Each of these index phosphor stripes 53 emits index light that reaches the ultraviolet range when excited by an electron beam.

At a predetermined position in the funnel section 46 of the second cathode ray tube 45, there is an index which detects the index light emitted by the index phosphor stripe 53 when the fluorescent surface section 48 is scanned by the electron beam. A light detection means 49 is arranged. This index light detection means 49 generates an index signal Si based on the detection output of the index light, and this index signal Si is supplied to the modulation control section 50. Modulation control section 50
sends a control signal Sc formed according to the index signal Si to the video signal supply control section 51, and
The fluorescent surface portion 48 of the electron beam scanning the
Appropriate modulation control is performed depending on the scanning position above.

Under control according to the index signal Si, the blue primary color signal component SR from the video signal forming section 4
The fluorescent surface section 48 is scanned by an electron beam modulated based on the green primary color signal component Sc.
and 12 are excited by an electron beam modulated based on the blue primary color signal component SE and the green primary color signal component S6, respectively, and have a peak wavelength of about 450 nm, and a wavelength range of about 550 nm, respectively. Light in a wavelength range that has a peak at
It is assumed that the second photosensitizer contained in the microcapsule b emits light that causes curing in response. As a result, an image corresponding to the blue primary color signal component SB and the green primary color signal component S from the video signal forming section 4 is displayed on the screen panel section 47 of the second cathode ray tube 45.

As described above, the screen panel section 12 of the first cathode ray tube 8 and the second cathode ray tube 45 in the image display section 5
The images obtained on the screen panel sections 47 of the first cathode ray tube 8 are reflected by the half mirror 20 and are formed by including the lens 22 and the shutter 23. The image guided to the image projection section 2■ and obtained on the screen panel section 47 of the second cathode ray tube 45 is the half mirror 20.
The light passes through and is guided to the image projection section 21. Then, each image is projected by the image projection section 21 onto the photosensitive sheet 30 supported by the support section 25, and thereby is obtained on the screen panel section 12 of the first cathode ray tube 8 with respect to the photosensitive sheet 30. Exposure with image light from the image and exposure with image light from the image obtained on the screen panel section 47 of the second cathode ray tube 45 are performed.

In this way, the red primary color signal component S from the video signal forming section 4 is supplied to the first cathode ray tube 8 by the video signal supply section 6 controlled by the control signal CS from the control section 10, When an image based on the red primary color signal component SR is displayed on the screen panel section 12 of the first cathode ray tube 8, a video signal is formed by the video signal supply control section 51 controlled by the control signal cs2' from the control section 10. The blue primary color signal component SR and the green primary color signal component SG from the section 4 are supplied to the second cathode ray tube 45, and the blue primary color signal component sB and the green primary color signal component SG are supplied to the screen panel section 47 of the second cathode ray tube 45. An image based on is displayed.

Therefore, in this example, exposure of the photosensitive sheet 30 supported by the support section 25 by image light from an image obtained on the screen panel section 12 of the first cathode ray tube 8 based on the red primary color signal component SR; That is, exposure is carried out to selectively harden the microcapsules C on the photosensitive sheet 30, and at the same time, light is obtained on the screen panel section 47 of the second cathode ray tube 45 based on the blue primary color signal component SR and the green primary color signal component S6. Exposure to image light from the image, that is, exposure to selectively harden the microcapsules a on the photosensitive sheet 30 and exposure to selectively harden the microcapsules b on the photosensitive sheet 30 are performed.

In this way, even in such an example, the photosensitive sheet 30
Among the microcapsules 3-C in , exposure to selectively harden microcapsule C, which has the lowest sensitivity to light that causes curing, and exposure to selectively harden the remaining microcapsules a and b. This is done simultaneously and in a state where each exposure time can be controlled independently. As a result, by appropriately setting the control signals C8 and C82° from the control unit 10, the exposure process for the photosensitive sheet 30 can be performed efficiently, and the microcapsules can be exposed with reduced exposure time. Appropriate selective exposure results can be obtained for each of a to C.

Further, after the photosensitive sheet 30 has been exposed to light, a developing sheet provided with a color developing material layer is used to create the original 2.
The above image is copied onto the developing sheet as a color image, which is the same as in the case where exposure is performed according to the first example.

G-3 Modified Example As mentioned above, when a beam index color cathode ray tube is used as the second cathode ray tube, if there is a risk that the relatively low resolution of the beam index color cathode ray tube may be a problem. For example, it is conceivable to supply the green primary color signal component S to the first cathode ray tube 8, and to supply the blue primary color signal component S and the red primary color signal component S+t to the second cathode ray tube 45.

In such a case, the fluorescent surface 13 of the first cathode ray tube 8
is emitted by an electron beam modulated based on the green primary color signal component S, and emits light in a wavelength range having a peak wavelength of about 660 nm, and the fluorescence of the second cathode ray tube 45 body stripes 11 and 1
2 is excited by an electron beam modulated based on the blue primary color signal component S5 and the red primary color signal component S, l, respectively, to emit light in a wavelength range having a peak at a wavelength of about 480 nm and at a wavelength of about 570r++n. It is said to emit light in a wavelength range that has a peak. Further, in such a case, the first to third photosensitizers contained in the microcapsules a''-c arranged on the surface of the photosensitive sheet 30 are such that the first photosensitizer among them is 2 cathode ray tube 4
In response to light in a wavelength range having a peak wavelength of about 480 nm, which corresponds to the light emitted from the phosphor stripes 7!1 arranged in the phosphor stripes 7! In response to light in a wavelength range that peaks at approximately 570 nm, which corresponds to the light emitted from the phosphor stripes 12 arranged in the phosphor stripes 12 arranged in the They are said to be cured in response to light in a wavelength range that peaks at about 660 nm, which corresponds to the light emitted from the surface 13. Furthermore, the first to third dye leuco bodies contained in the microcapsules a-C together with the first to third photosensitizers are contained in the photosensitive sheet 3.
It has the property of reacting with the color developing material layer of the developing sheet used in connection with 0, and causing the color developing material layer of the developing sheet to develop yellow, cyan, and magenta colors, respectively.

In this way, by supplying the green primary color signal component SG to the first cathode ray tube 8, which is a normal cathode ray tube, image light from an image obtained on the screen panel section 12 of the first cathode ray tube 8 is generated. Based on the microcapsules C subjected to selective exposure by
This results in magenta coloring, which is said to have the most impact on the human eye, so that efficient exposure is performed and the resolution of the second cathode ray tube 45, which is a beam index type color cathode ray tube, is low. In this case, a color image corresponding to the color image on the original 2 can be obtained in the color developer layer of the developer sheet.

Further, the photosensitive sheet 30 includes microcapsules a to c.
Instead, it is equipped with multiple types of microcapsules that contain a photosensitizer that hardens upon exposure to light in a specific wavelength range, and a dye or dye precursor other than the leuco dye. Of course, the image light exposure apparatus according to the present invention can also be applied in the same manner as in the case of the photosensitive sheet 30 including microcapsules a to C.

[2] Effects of the Invention As is clear from the above description, according to the image light exposure apparatus according to the present invention, for example, the first... The first one is cured by being exposed to light in the second and third wavelength ranges. second and third photosensitizers; the second and third dyes or dye precursors, the first photosensitizer and the first dye or dye precursor, respectively;

There are a large number of three types of microcapsules containing combinations of a second photosensitizer and a second dye or dye precursor, and a third photosensitizer and a third dye or dye precursor. When exposing a sheet-like photosensitive material having mixed and dispersed surfaces in accordance with a predetermined color image, the first . Of the second and third microcapsules, selective exposure to those having the lowest sensitivity to light that causes curing and selective exposure to the remaining two types of microcapsules are carried out simultaneously and for respective exposure times. This can be carried out in a state where the conditions such as 1. Appropriate exposure results can be obtained for each of the second and third microcapsules.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing an example of an image light exposure apparatus according to the present invention, FIGS. Fig. 3 is a cross-sectional view for explaining the photosensitive sheet applied to the example shown in Fig. 1, and Fig. 4 is a photosensitive agent incorporated in the microcapsules arranged in the photosensitive sheet shown in Fig. 3. 5 is a schematic configuration diagram showing another example of the image light exposure apparatus according to the present invention, and FIG. 6 is a diagram of the beam index type color cathode ray tube used in the example shown in FIG. Diagram 7 for explaining the fluorescent surface
The figure shows the emission spectrum characteristics of the phosphor arranged on the fluorescent surface of the beam index color cathode ray tube used in the example shown in Figure 5. Figure 8 shows the emission spectrum characteristic along the ■-■ line at the 6th leap. FIG. In the figure, 2 is a document, 4 is a video signal forming section, 5 is an image display section, 6 is a video signal supply section, 7 is a video signal switching section, and 8 is a first
9 and 45 are second cathode ray tubes, 10 is a control section, 11 is a filter switching section, 17 is a filter section, 2o is a half mirror, 121 is an image projection section, 25 is a support section, 3o
51 is a photosensitive sheet, 51 is a video signal supply controller, and a, b, and C are microcapsules. - Published by O (sha) Kwakan - Nepharyngeal saw saw

Claims (1)

[Claims] A large number of first microcapsules containing a photosensitizer that cures in response to light in a first wavelength range and a first dye or dye precursor; a large number of second microcapsules containing a photosensitizer that hardens in response to light and a second dye or dye precursor, and a photosensitizer that hardens in response to light in a third wavelength range and A large number of third microcapsules containing the dye or dye precursor of No. 3,
It has a support section that supports a photosensitive material mixed and dispersed on the surface of a sheet-like substrate, and a screen panel section that has a fluorescent surface formed on its inner surface, and supplies the first primary color component of a color video signal. Then, from the fluorescent surface, the photosensitizer contained in the one of the first, second, and third microcapsules that has the lowest sensitivity to light that causes curing reacts and cures the above-mentioned microcapsule. 1st
, a first cathode ray tube that emits one of light in a second and third wavelength range to display an image based on the first primary color component on the screen panel section; and a fluorescent surface on the inner surface side. The screen panel section has a screen panel section formed with a screen panel section formed with the second and third primary color components of the color video signal, and receives the second and third primary color components of the color video signal from the fluorescent surface to display one of the first, second and third microcapsules. Two of the above-mentioned lights in the first, second and third wavelength ranges that are cured by being sensitive to the built-in photosensitizers of the light, except for the light that has the lowest sensitivity to the light that causes curing. a second cathode ray tube that emits an image based on the second and third primary color components of the video signal on the screen panel section; and a screen panel section of each of the first and second cathode ray tubes. An image light exposure device comprising: an image projection unit that projects a displayed image onto the photosensitive material and exposes the photosensitive material.