JP2884818B2 - Photosensitive recording medium - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photosensitive recording medium used for recording characters and images, and more particularly, to a photosensitive recording medium for characters and images using photosensitive microcapsules containing a photosensitive substance. It is about.

[0002]

2. Description of the Related Art Conventionally, as an image forming method using the photosensitive material, for example, U.S. Pat. Nos. 2,548,366, 4,399,209, 4,416,966, and 45.
No. 76891, JP-A-48-65011, JP-A-48-95420, JP-A-51-16807, JP-A-57-124343, JP-A-57-179636
JP-A-57-197538, JP-A-58-887
39, JP-A-58-88740, JP-A-60-25
No. 9490, JP-A-61-130945 and JP-A-61-130945.
JP-A-275742, JP-A-62-162147, JP-A-62-174195, JP-A-62-209444 and JP-A-62-209531 are generally known.

The general one is as follows. That is, a photosensitive recording medium formed by uniformly applying a photosensitive microcapsule containing a photosensitive substance to the surface of a support is irradiated with light of image information to be exposed. The photosensitive microcapsules that have not been exposed to light at the time of exposure are in an unreacted state, and after exposure, if necessary, processing such as heating is performed. Then, after the post-treatment, the uncured photosensitive microcapsules are destroyed by applying pressure or heating, and the photosensitive material as the inclusion is transferred to the medium to be transferred.

[0004]

However, in the conventional image forming method using a photosensitive recording medium as described above, a positive image can be formed by analog light, but a negative image cannot be formed. There was a problem. The present invention has been made to solve the above-described problem, and has as its object to provide a photosensitive recording medium capable of forming a negative image by analog light.

[0005]

In order to achieve this object, the photosensitive recording medium according to the first aspect of the present invention comprises a photosensitive microcapsule containing at least a photosensitive substance which reacts upon exposure to light on a surface of a support via a binder. In the photosensitive recording medium coated on the above, the photosensitive uncured by exposure
Break the microcapsules and use the photosensitive substance
Reduces the binding and adhesion of the binder,
The photosensitive microcapsules and the binding and adhesive properties are low.
By peeling the dropped binder off the support
An image is formed. Also, in claim 2
The photosensitive recording medium according to claim 1, wherein the photosensitive recording medium is a photosensitive recording medium according to claim 1.
In the photosensitive microcapsules, the color of cyan
Microcapsules containing magenta, magenta pigment
Containing microcapsules and yellow dye
Including three types of microcapsules of microcapsules,
The three types of microcapsules have different wavelengths of exposure.
It is characterized by being cured by light. Also, in claim 3
The image forming method described is a photosensitive material that reacts upon exposure.
Photosensitive microcapsules containing at least
Photosensitive recording medium coated on the surface of a support via a
An image forming method for forming an image using
Before breaking the more uncured photosensitive microcapsules
The binding property and adhesiveness of the binder are determined by the photosensitive material.
Lower and destroy the destroyed photosensitive microcapsules and
The binder having the reduced binding property and adhesion property is placed on the support.
Forming an image by peeling it off
You.

[0006]

According to the present invention having the above-described structure, the uncured photosensitive microcapsules are destroyed by exposure, and the photosensitive substance contained in the destroyed photosensitive microcapsules is impregnated into a binder. A negative image can be formed on the photosensitive recording medium by reducing the binding property and adhesiveness of the binder and peeling off the reduced binder together with the destroyed photosensitive microcapsules from the photosensitive recording medium.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the photosensitive recording medium 1 of this embodiment is made of polyethylene terephthalate (PET).
A film is used as a support 11, and a photosensitive microcapsule 1 having a photosensitive substance encapsulated on the surface of the support 11 is provided.
2 is applied by the binder 13.

There are three types of photosensitive microcapsules 12 having cyan, magenta and yellow dyes. That is, the photosensitive microcapsules 12 containing the cyan dye are hardened by exposure at a wavelength around 650 nm (red). The photosensitive microcapsules 12 containing the magenta dye are hardened by exposure to light having a wavelength of about 550 nm (green). Further, the photosensitive microcapsules 12 containing the yellow dye are solidified by exposure at a wavelength of around 450 nm (blue). The photosensitive microcapsules 12 contain a photosensitive substance, a polymerization initiator, and a dye.

For example, US Pat. No. 2,730,456 and US Pat.
No. 800457, No. 2800458, No. 2969
No. 331, No. 3111407, No. 3281383
No. 3,287,154, No. 3,418,250, No. 3,551,346, No. 3,576,660, No. 35
No. 78605, No. 3660304, No. 37268
No. 03, No. 3755190, No. 3773695
No. 3,793,268, No. 3,796,669, No. 3,803,046, No. 3,816,331, No. 40
No. 01140, No. 4025455, No. 40873
No. 76, No. 4,089,802, British Patent No. 92
No. 7807, No. 930422, No. 965074
No. 990443, Canadian Patent 8790
No. 43, JP-B-36-9168, JP-B-38-
19574, JP-B-42-446, JP-B-42-7
No. 71, JP-B-48-40347, JP-B-49-24
No. 159, JP-B-51-28589 and JP-B-52-
The method described in JP-A-12150 is cited. However, it is a matter of course that the present invention is not limited to these, and it is preferable that the outer wall forming material has a property of sufficiently transmitting light.

As the photosensitive material, for example, US Pat. Nos. 4,399,203, 4,416,966 and 4,440,836, and JP-A-57-124343.
JP-A-57-179636, JP-A-57-197
538, JP-A-58-88739, JP-A-58-8
No. 8740, JP-A-61-130945, JP-A-61-130945
-275742 and JP-A-62-174195, but it is needless to say that the present invention is not limited thereto.

As the binder 13, one in which the binding property and adhesiveness of the binder 13 are reduced by a photosensitive substance contained in the photosensitive microcapsules 12 is used. Examples of the binder 13 include known binders, for example, acetal resin, acrylic resin, cellulose acetate, ethylene-vinyl acetate copolymer, vinyl chloride-vinyl acetate copolymer, ABS, and AS. In the present embodiment, a vinyl chloride-vinyl acetate copolymer is used as the binder 13.

A general support 11 is paper,
Examples thereof include glass, film, metal, and ceramic, but they need to have good wettability with the binder 13 and withstand pressure and heating. Then, for example, a solution in which the photosensitive microcapsules 12 (5 parts by weight) are dispersed in a solution in which the binder 13 (10 parts by weight) is dissolved in toluene (100 parts by weight) is applied to the support 11 and dried. By doing so, the photosensitive recording medium 1 can be obtained.

Next, an image forming method using the photosensitive recording medium 1 will be described. First, as shown in FIG. 2, an original 1 is illuminated by a light source 14 from the support 11 side of the photosensitive recording medium 1.
5 is subjected to analog projection exposure to form a latent image on the photosensitive recording medium 1. Next, as shown in FIG. 3, the uncured photosensitive microcapsules 12a are formed by passing the photosensitive recording medium 1 on which the latent image is formed between a pair of pressure rollers 16, 16.
Destroy. At this time, the cured photosensitive microcapsules 12b are not destroyed. Then, the photosensitive substance released from the broken photosensitive microcapsules 12a permeates into the binder 13 and deteriorates the binding property and adhesiveness of the binder 13.

Further, as shown in FIG. 4, an adhesive layer having an adhesive strength inferior to that of a normal binder, that is, a binder 13 which is not impregnated with a photosensitive substance, and an adhesiveness of the binder 13 and the support 11. (Not shown) on the adhesive roller 17 formed on the surface, the broken photosensitive microcapsules 12a and the photosensitive substance penetrates into the inside by the destruction of the microcapsules 12a, so that the binding property and the adhesive property are improved. The deteriorated binder 13 is removed from the support 11.

In this manner, as shown in FIG. 5, the photosensitive recording medium 1 which becomes the negative image of the original 15 can be obtained. Note that the present invention is not limited to the above-described embodiment, and the structure and operation can be changed without departing from the scope of the claims. For example, the exposure may be from the side opposite to the support, or may be digital exposure. In addition, heating may be performed at the time of pressurization or at the time of peeling off an unexposed portion, or electrostatic peeling may be performed instead of the attaching roller. Further, a transparent, white or blue layer may be provided on the layer on the support on which the image is formed, and the layer may be attached with a sheet or coated with a resin or the like. In addition, the peeled image may be transferred to another object to form a normal image.

[0016]

As is apparent from the above description, according to the present invention, a negative image from an original can be formed on a photosensitive recording medium by a relatively simple method such as analog exposure.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of one embodiment of a photosensitive recording medium of the present invention.

FIG. 2 is a schematic cross-sectional view of an exposure step of image formation using the photosensitive recording medium of the present invention.

FIG. 3 is a schematic cross-sectional view of a pressure step of image formation using the photosensitive recording medium of the present invention.

FIG. 4 is a schematic sectional view of a stripping process of image formation using the photosensitive recording medium of the present invention.

FIG. 5 is a completed sectional view of image formation using the photosensitive recording medium of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Recording medium 11 ... Support body 12 ... Photosensitive microcapsule 13 ... Binder

Claims (3)

(57) [Claims] 1. A photosensitive recording medium comprising at least a photosensitive microcapsule containing at least a photosensitive substance which reacts upon exposure, coated on the surface of a support via a binder.
Breaks down and binds the binder with the photosensitive material.
And the adhesiveness, and the broken photosensitive micro
In front of the binder and the binder having reduced binding and adhesion properties.
A photosensitive recording medium, wherein an image is formed by peeling off from the support . 2. The method according to claim 1, wherein the photosensitive microcapsules are cyan.
Microcapsules containing magenta dye
Contains microcapsules and yellow pigment
Three types of microcapsules
The three types of microcapsules have different waves.
2. The composition according to claim 1, wherein the composition is cured by long exposure.
On the photosensitive recording medium. 3. A photosensitive material which reacts upon exposure to light is reduced.
At least a photosensitive microcapsule containing
Using a photosensitive recording medium coated on the support surface
An image forming method for forming an image, the method comprising:
Of the photosensitive microcapsules
The substance reduces the binding and adhesion of the binder.
And bonding the broken photosensitive microcapsules to the
The binder having reduced adhesiveness and adhesiveness is peeled off from the support.
An image characterized by forming an image by stripping
Forming method.