JPS63223642A - Image forming method - Google Patents

Abstract

PURPOSE:To shorten the copying time per a sheet of copy, omitting the transport time of a photo-pressure sensitive material by setting said material to be subsequently exposed, on the exposure position at the end of driving an apparatus and at the time of replenishing said material to the apparatus. CONSTITUTION:First, the top of the photo-pressure sensitive material S to be subsequently exposed is automatically set on the exposure position 32 by nip rollers 28, 30 equipped with the exposure part at the end of driving the apparatus and at the time of mounting a roll 12 of the sensitive material on a cartridge 14 for the sensitive material. In this time, the part of the sensitive material which is allowed to contact with a setting device, is overlapped with an image receiving paper. As said part is a surplus part which is necessary for peeling off the sensitive material from said paper, and is the outside of the image, any trouble does not occur. Thus, as the time for transporting the photo-pressure sensitive material to the exposure position before exposure makes unnecessary, the copying time per one sheet of copy is shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image forming method using a photosensitive pressure-sensitive material having microcapsules encapsulating a photosensitive composition. In particular, it relates to a method for positioning a photosensitive pressure sensitive material during image formation.

[Conventional technology]

As an example of a photosensitive pressure sensitive material having microcapsules encapsulating a photosensitive composition, for example, Japanese Patent Application Laid-Open No. 57-179836
A system is known in which a synthetic polymer resin wall capsule containing a vinyl compound, a photopolymerization initiator, and a colorant precursor is carried on a support as disclosed in the above publication. The image recording method using this system is to imagewise harden the microcapsules by exposure to light, rupture the unhardened microcapsules by applying pressure, and obtain a color image from the released colorant precursor. The method is characterized in that high quality images can be obtained through simple dry processing. However, this system has the drawback of significantly lower photosensitivity than systems using silver halide.

A new recording material that improves these drawbacks and has high photosensitivity and can obtain high quality images through simple dry processing has been proposed in Japanese Patent Laid-Open No. 61-2 filed by the present applicant.
No. 75742. In this recording material, at least a photosensitive silver halide, a reducing agent, a polymerizable compound, and a color image-forming substance are coated on a support, and at least the polymerizable compound and the color image-forming substance are encapsulated in the same microcapsule. It consists of a photosensitive composition.

Regarding the image forming method of forming an image using this photosensitive and pressure sensitive material, Japanese Patent Laid-Open No. 61-27 filed by the present applicant
No. 8849. This image forming method first performs imagewise exposure to form a latent image, then develops it by heating, and polymerizes the polymerizable compound in the area where the latent image exists to form a high molecular compound to form microcapsules. harden. Then, the image-receiving material having an image-receiving layer to which the color image-forming substance can be transferred is stacked and pressurized to rupture at least a portion of the microcapsules in the area where the latent image does not exist, and the color image-forming substance is transferred to the image-receiving material. to obtain an image on an image-receiving material.

Then, using the above-mentioned photosensitive pressure-sensitive material, the photosensitive pressure-sensitive material is subjected to imagewise exposure, heat development is performed, and then it is superimposed on an image-receiving material and pressurized to transfer them to obtain an image on the image-receiving material automatically. An image forming apparatus that performs this is disclosed, for example, in Japanese Patent Application No. 1987-287492 filed by the present applicant.

Devices and methods of this type were as follows.

That is, in the image forming apparatus according to the present invention shown in FIG.
A document is placed face down on the glass plate 2, and the glass plate 2 moves back and forth in the direction of arrow A.

At the bottom of the glass plate 2, there is a reflecting mirror 6 for illuminating the original.
An additional illumination lamp 8 is provided, and a fiber lens array 1O for forming an original image on the photosensitive pressure sensitive material S at a predetermined position is provided.

A photosensitive material cartridge 14 containing a photosensitive material roll 12 wound with a photosensitive pressure sensitive material S is removably attached to the side of the housing 1. At the outlet 16 of the photosensitive material S of the photosensitive material cartridge 14, a pair of photosensitive material feeding rollers 21 and 22 housed in the magazine connection dark box 20 are disposed, and the photosensitive material S wound on the photosensitive material roll 12 is disposed on the outlet 16 of the photosensitive material cartridge 14. The pressure-sensitive material S is extended by a certain length at a predetermined time, and is also retracted as desired.

When the leading edge of the photosensitive pressure sensitive material S advances, the sensitive material feeding rollers 21 and 22 move away from each other as shown by phantom lines to facilitate the advance of the photosensitive pressure sensitive material S. A cutter unit 23 for cutting the photosensitive pressure sensitive material S and a guide plate 24 are arranged in front of the magazine connection dark box 20 (the front refers to the downstream side in the direction of travel of the photosensitive pressure sensitive material, etc.). There is.

In front of the guide plate 24, an exposed photosensitive material support roller 26 and two photosensitive material nip rollers 28, 30 pressed against the exposed photosensitive material support roller 26 are arranged. The light-sensitive pressure-sensitive material S guided by the guide plate 24 is brought into close contact with the exposed light-sensitive material support roller 26 by the light-sensitive material nip rollers 28 and 30.
Imagewise exposure of the document is made by the fiber lens array 10 at a position 32 between 8.30 and 30.

In front of the exposed photosensitive material support roller 26, a heat developing device 40 is arranged to heat and develop the exposed photosensitive material S, and the photosensitive pressure sensitive material S is heated to about 120° C. by the heat developing device 40. After being developed, the image receiving paper C sent from the image receiving paper cartridge 73 through the vertical guide device 58 is superimposed in the superimposing device 70, and is subjected to a pressure of about 500 kg/- in the transfer device 88. An image is transferred from the material S to an image-receiving paper C, and the used photosensitive pressure-sensitive material S and the image-receiving paper C on which the image has been formed are peeled off by a photosensitive image-receiving paper peeling device 90 and taken out.

In the above-mentioned apparatus, the standby position before exposure of the photosensitive and pressure-sensitive material S is at the position of the sensitive material feeding rollers 21° and 22 at the beginning when the sensitive material roll 12 is loaded into the sensitive material cartridge, and during operation, the standby position is the position of the sensitive material feeding rollers 21 and 22. It was in position 23.

[Problem that the invention seeks to solve]

In this case, when you press the copy start key, the photosensitive pressure-sensitive material in standby is transported from the standby position to the exposure position, and then exposure begins, which increases the copying time per sheet. .

It is an object of the present invention to provide an image forming method which eliminates the time required to transport the photosensitive pressure sensitive material and shortens the copying time per sheet by one hour.

[Means for solving problems]

An object of the present invention is to provide an image forming method using a photosensitive pressure sensitive material, which includes setting the photosensitive pressure sensitive material to be exposed next at the exposure position at the end of the operation of the apparatus and at the time of replenishing the photosensitive pressure sensitive material. This is achieved by a characteristic image forming method.

The photosensitive pressure-sensitive material and the image forming method of the present invention are those of the type in which a polymerizable compound is imagewise cured by imagewise exposure and then pressure is applied to obtain a visible image, which is related to the application filed by the present applicant. The material disclosed in Japanese Patent Application Laid-Open No. 57-179836 is cited. This material contains a vinyl compound, a photoinitiator, and a colorant precursor on a support.
It supports a synthetic polymer resin wall capsule containing.

Alternatively, after containing silver halide and giving imagewise exposure, heat development is performed to develop the silver halide, the polymerizable compound is simultaneously cured in correspondence with this development, and then pressure is applied to form a visible image. An example of the material that can be obtained is the material disclosed in Japanese Patent Application Laid-Open No. 61-278849 filed by the present applicant.

The material disclosed in JP-A No. 61-278849 is
After thermal development, a color image-forming substance is transferred to an image-receiving material having an image-receiving layer to obtain an image on the image-receiving material. and a color image-forming substance and a color image-forming substance encapsulated in the same microcapsule.

In the present invention, setting the photosensitive pressure-sensitive material to be exposed next at the exposure position at the end of the device operation and when replenishing the photosensitive pressure-sensitive material means first setting the photosensitive pressure-sensitive material to the exposure position at the end of the device operation and at the time of replenishing the photosensitive pressure-sensitive material. When the light-sensitive and pressure-sensitive material to be exposed next is loaded into the
(For example, a nip roller, a presser guide plate, a nip belt, a suction roller, etc.) is used to set the exposure position.

In this case, the portion of the photosensitive material that comes into contact with the setting device is an extra portion outside the screen that is necessary for overlapping and peeling off the image-receiving paper, so that it does not interfere with the image.

The method of the present invention can also be applied when the photosensitive material is supplied not in the form of a photosensitive material roll but in the form of cut paper.

[For production]

The present invention is an image forming method using a photosensitive pressure sensitive material,
By setting the photosensitive pressure sensitive material to be exposed next to the exposure position at the end of the device operation and when replenishing the photosensitive pressure sensitive material, the transportation time to the exposure position before exposure is unnecessary, so one copy can be It can save you that much time.

〔Example〕

Although one embodiment of the present invention will be described, the present invention is not limited to this embodiment.

In FIG. 1, a mechanism is provided in which the nip rollers 28 and 30 are automatically set to the exposure position 32 when the apparatus is finished operating and when a new photosensitive material cartridge is loaded.
It used to take 20 seconds to complete the exposure of the first sheet, but now the exposure can be completed in 10 seconds.

〔Effect of the invention〕

The present invention is an image forming method using a photosensitive pressure sensitive material,
By setting the photosensitive pressure sensitive material to be exposed next to the exposure position at the end of the operation of the apparatus and when replenishing the photosensitive pressure sensitive material, it was possible to reduce the copying time per sheet by one hour.

[Brief explanation of drawings]

FIG. 1 is a side view of one embodiment of the method for forming an image on a photosensitive pressure-sensitive material according to the present invention. l...Housing 2...Glass plate S...Photosensitive pressure sensitive material 6...Reflector 8...Illumination lamp 10...Fiber lens array 12...Sensitive material roll 14...Sensitivity Material cartridge 7 16...Exit 20...Magazine connection dark box 21.22...Sensitive material feeding roller 23...Cutter unit 24...Guide plate 26...Exposed sensitive material support roller 28. 30...Sensitive material nip roller 40...Heat developing device 58...Vertical guide device 73...Image receiving paper cartridge 70...Layering device 88...Transfer device 90...Sensitive material image receiving paper peeling Device C...image receiving paper

Claims (1)

[Claims] An image forming method using a photosensitive pressure sensitive material, characterized in that the photosensitive pressure sensitive material to be exposed next is set at an exposure position at the end of device operation and at the time of replenishment of the photosensitive pressure sensitive material. Method.