JPH0422952A - Photosensitive transfer type image recorder - Google Patents

Abstract

PURPOSE:To eliminate the waste of an unused photosensitive material by providing a supply roller and a take-up roller. CONSTITUTION:The unexposed and undeveloped part of the photosensitive material past an exposing section and heating and developing section is rewound so as to be reused while the used photosensitive material is taken up. Namely, the unexposed part is rewound by rotating the supply roller 3 in the arrow w direction. The supply roller is merely necessitated to be rotated in the w direction by as much as the length between the terminal of the exposed and heat developed photosensitive material and the rewinding position. The rewinding position is set at least up to the take-up roller 3 side from the exposing part. The photosensitive material is preferable returned to the inside of a cassette. The wasting of the photosensitive material before use is prevented in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image recording apparatus that records an image using a photosensitive heat-developable material.

More specifically, a photosensitive material is coated on a support with a substance that is photosensitive and is developed by heating, and the resulting image is transferred by pressure, and the photosensitive material is subjected to imagewise exposure. It then relates to an image recording apparatus in which heat development is carried out, and then an image is obtained on the image-receiving material through transfer by superimposing the image-receiving material on the image-receiving material and applying pressure thereto.

[Technical background of the invention and its problems] As an example of an image recording material using microcapsules encapsulating a photosensitive composition, for example, Japanese Patent Application Laid-Open No. 57-1798
A system is known in which a synthetic polymer resin wall capsule containing a vinyl compound, a photopolymerization initiator, and a colorant precursor is supported on a support, as disclosed in Japanese Patent No. 36. 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, has high photosensitivity, and can obtain high-quality images through simple dry processing has been proposed in Japanese Patent Application Laid-Open No. 1983-1981 filed by the present applicant.
It is disclosed in Japanese Patent No. 275742. This recording material is a photosensitive heat-developable material, in which at least a photosensitive silver halide, a reducing agent, a polymerizable compound, and a color image forming substance are coated on a support. The color imaging material consists of a photosensitive composition encapsulated in identical microcapsules.

Regarding the image recording method of recording images using this photosensitive material, Japanese Patent Application Laid-Open No. 61-2788 filed by the present applicant
It is disclosed in Publication No. 49. In this image recording method, first, imagewise exposure is performed to form a latent image, and then the polymerizable compound in the area where the latent image exists is polymerized by heating to generate a polymer compound and the microcapsules are hardened. The color image-forming substance is then placed on an image-receiving material onto which the color image-forming substance can be transferred, and pressure is applied to rupture at least a portion of the microcapsules in areas where no latent image exists, thereby transferring the color image-forming substance to the image-receiving material. This is to obtain an image. On the other hand, a method of polymerizing a polymerizable compound in a portion where a latent image is not formed, and an image forming method using the same are described in JP-A-62-81635 and JP-A-1-54.
It is described in Publication No. 101.

In conventional photosensitive transfer type image recording apparatuses using this photosensitive material, the following two methods of transporting the photosensitive material have been considered. The first method is to take out the photosensitive material that has been cut into sheets of the required size or the photosensitive material that has been wound around a supply roller, cut it, imagewise expose the sheet-shaped photosensitive material, and then heat develop it. This is a method of performing transcription. The second method is to convey the photosensitive material sent out from the supply roller in only one direction through imagewise exposure, heat development, and transfer without cutting it, and then wind the used photosensitive material around a take-up roller or the like to remove it from the outside. It was discharged to

[Intelligence M to be Solved by the Invention] However, in the first method of the prior art described above, since the photosensitive material is in the form of a sheet, it is necessary to firmly hold both sides of the support with conveying rollers. The drawback is that the photosensitive layer containing microcapsules is easily scratched.

On the other hand, in the second method, it is possible to feed the photosensitive layer without the conveyance roller coming into contact with it, but since the photosensitive material is conveyed only in one direction, it is difficult to form an image on the image-receiving material sheet by sheet. The end of the exposed photosensitive material is pressure-transferred and the photosensitive material is conveyed until it is sent out from between the pressure rollers. In this state, exposure for the next image formation is performed, so the exposure section There is a problem in that the unused photosensitive material between the roller and the pressure roller is wasted.

[Object of the Invention] An object of the present invention is to provide a photosensitive transfer image recording apparatus that does not waste unused photosensitive materials.

[Means for solving problems]

The object of the present invention is to use a photosensitive material having on a support a photosensitive layer containing microcapsules containing at least a silver halide, a reducing agent, a polymerizable compound, a color image forming substance, and a base or a base precursor. In a photosensitive transfer type image recording device that performs heat development and then overlays an image-receiving material and pressurizes them to form an image on the image-receiving material by transfer, a supply roller around which the unused photosensitive material is wound and a used photosensitive material. A mechanical part that allows a take-up roller for winding the material to rotate freely, an exposure part that performs imagewise exposure of the photosensitive material, a heat development part that heats and develops it, a pressure roller part that applies pressure to transfer, and a pressure exposure method. It has a separating section that separates the material and the image-receiving material, and the used photosensitive material is wound up, and the unexposed and undeveloped portion of the photosensitive material that has passed through the exposure section and the heat development section is rewound so that it can be reused. This was achieved using a photosensitive transfer type image recording device characterized by the following.

[Embodiment] FIG. 1 is a main sectional view showing the basic configuration of an embodiment of the present invention.

The original image 2 is placed on the original image stand 1, and the original image stand 1 moves to the start position, stops at -, and then moves again in the direction indicated by the arrow p. An amount of photosensitive material corresponding to the size of the image desired to be formed is pulled out from the supply roller 3 in the direction of arrow q at the same speed as the moving speed of the original stage 1, and passes through the exposure section 4. The take-up roller 8 rotates in the direction of arrow R at the same time as the conveyance of the photosensitive material starts, and the supply roller 3 is rotated in the direction S by the pulling force of the photosensitive material. The exposed portion of the photosensitive material passes through the thermal development section 5 at the same speed and reaches the pressure roller section 6. There, it is superimposed on the image receiving material coming from the image receiving material supply section 9, moves in the direction of the arrow U, and enters the pressure transfer section, at the same time the pressure roller 7 moves in the direction of the arrow t to perform pressure transfer.

Before the end of the image-receiving material is sent out from the pressure transfer section, the pressure roller 7 moves in the direction of the arrow V and the pressure is released. The transferred image-receiving material is discharged, and the rotation of each roller is temporarily stopped. Rewinding of the unexposed area is performed by rotating the supply roller 3 in the direction of the arrow w7i. The supply roller may be rotated in the W direction by the length between the end of the photosensitive material in the exposure and thermal development section and the rewinding position.

The rewinding position is preferably at least to the side of the take-up roller 3 from the exposure section, preferably to the inside of the photosensitive material cassette. However, in this case, the photosensitive material should be moved in the direction of arrow q just before the next exposure. The exposed area is exposed area 4.
You need to pull it out.

[Brief explanation of drawings]

FIG. 1 is a sectional view of one embodiment of the present invention. The numbers and symbols in the figure have the following meanings. P, Q, r, 5% t, u, v, w indicate the direction of travel. 1: Original drawing stand 2: Original drawing : Supply roller :Exposed area : Heat development section : Pressure roller part : Pressure roller : Take-up roller : Image receiving material supply section

Claims (1)

[Claims] Using a photosensitive material having on a support a photosensitive layer containing microcapsules containing at least silver halide, a reducing agent, a polymerizable compound, a color image forming substance, and a base or base precursor, heat development is performed after image exposure, and then In a photosensitive transfer image recording device that forms an image on the image-receiving material by overlapping it with an image-receiving material and transferring it by applying pressure, there are two parts: a supply roller around which the unused photosensitive material is wound, and a roll around which the used photosensitive material is wound. A mechanism section that allows the take-up roller to rotate freely, an exposure section that performs imagewise exposure on the photosensitive material, a heat development section that performs heat development, a pressure roller section that applies pressure to transfer, and a pressurized photosensitive material and image-receiving material. The used photosensitive material is wound up, and
A photosensitive transfer type image recording device characterized in that an unexposed and undeveloped portion of a photosensitive material that has passed through an exposure section and a heat development section is rewound so that it can be reused.