JPS59111628A - Processor for diffusion transfer photosensitive material - Google Patents

Abstract

PURPOSE:To obtain a positive picture speedily by diffusion transfer by exposing a diffusion transfer photosensitive material to an original negative picture and developing it, and superposing it in close contact with transfer positive form. CONSTITUTION:The photosensitive material supplied by feed-out rollers 11 is fed by rollers 13 and developed in a dish 15 by a switch pack. A positive form 7 in the dish 5 is supplied to the 2nd tray 20 with the image receiving layer down. The photosensitive material (b) and form 7 are superposed in close contact by superposition contacting rollers 23. The photosensitive material 6 and form 7 in contact stay on an accumulating belt 26 and is carried out by the belt 26. Therefore, unexposed silver halide on the photosensitive surface of the photosensitive material is transferred to the image receiving layer of the form 7 and reduced and fixed. Further, when a reversal film is used as an original negative and the diffusion transfer photosensitive material is used as a positive, the same effect is obtained.

Description

[Detailed Description of the Invention] This invention applies the diffusion transfer principle adopted in the Polaroid photography method to enlarge an original negative image to the required magnification in one operation and print it on positive paper easily and in a short time. The present invention relates to a diffusion transfer photosensitive material processing apparatus capable of printing.

In the Polaroid photography method, a negative film coated with a photosensitive emulsion is exposed to light, and then developed by bringing it into close contact with specially treated transfer positive paper, which itself is not photosensitive. It is transferred to the image-receiving layer of the transfer positive paper and is reduced and fixed, and the convenience of being able to obtain a positive image immediately after photographing is generally preferred and has become popular. However, in the case of Polaroid photography, the image of the subject exposed on negative film is simply obtained as a positive image.

There is a point that it is not possible to print or enlarge the image later, so if printing or enlarging is required, a photograph is taken with a normal camera, and the resulting negative film is developed to create an original negative. The original negative image had to be exposed and fixed on positive paper, and it took a considerable amount of time for the exposure and fixation.

In view of the above points, this invention exposes an original negative image to a diffusion transfer photosensitive material at a necessary magnification, develops the exposed photosensitive material, and then attaches a transfer positive paper to the photosensitive material to form a positive image by diffusion transfer. It is an object of the present invention to provide a novel diffusion transfer photosensitive material processing apparatus that allows images to be obtained quickly.

Next, the present invention will be described based on an embodiment shown in the accompanying drawings.

1 is a casing, 2 is a light source, and 3 is an enlarger lens.

4 is a support means for the original negative a provided between the light source 2 and the enlarger lens 3, and 5 is a magazine placed at the image forming area a' of the original negative a. Magazine 5 is the second
As shown in the figure, it consists of an outer frame 5a and an inner frame 5b which are open on the exposure side and the opposite side, respectively, and a shutter member 5C is provided at the open side of the exposure side of the outer frame 5a.

Reference numeral 6 denotes a diffusion transfer photosensitive material (hereinafter simply referred to as photosensitive material) which is laminated and housed on the exposure side of the inner frame 5b of the magazine 5. The photosensitive material 6 has a surface coated with a photosensitive emulsion and a back surface coated with a black film or the like. By forming a surface, light is blocked and the next layer of photosensitive material is not covered with light even when the uppermost layer of photosensitive material is exposed. 1 is positive paper stacked back to back on the opposite side of the inner frame 5b of the magazine 5.

The positive paper 7 itself is not photosensitive, but has a specially treated image-receiving layer. The stacked photosensitive material 6 and positive paper 7 are placed in the inner frame 5b of the magazine 5 by a movable member 9.9 which is biased to expand by a common spring 8, and are moved to a stopper frame provided at each opening. Pressed by 5d and 5e.

It maintains ease of feeding and flatness of the photosensitive material. IO
1 is a conveyance mechanism that suctions and conveys the photosensitive material after exposure, and the conveyance mechanism 10 retreats from the image irradiation area of the original negative during exposure, protrudes after the exposure is completed, and descends to suction the uppermost layer of photosensitive material with a suction cup 10a. The photosensitive material is held, and then raised and moved forward to supply the attracted photosensitive material to the delivery roller 11. It is free to adopt other configurations for the transport mechanism 10. The photosensitive material thus supplied to the feed roller 11 is supplied to the forward and reverse rotation rollers 13 via the guide path 12, and is then fed upwardly by the forward and reverse rotation rollers 13.

The seat is moved down the seat passage 14 in a switch bank. This switch bank allows the photosensitive material 6 to be placed in the first tray 15 containing the developer with its photosensitive surface facing up.
The image is loaded through the charging roller 16 and developed.

Separately from the conveyance path of the photosensitive material 6, the positive sheets 7 stacked back to back inside the inner frame 5b of the magazine 5 are fed out by a feed roller 17. It is pulled out from the magazine 5 by a feed roller 18 at a proper timing, passes through a guide 19, and is supplied with the image-receiving layer facing down by a supply roller 21 to a second layer 20 provided overlappingly on the upper surface of the -lth layer 15.

The photosensitive material 6 loaded into the first tray 15 containing the developer and the positive paper 7 supplied to the second tray 20 are transported by a conveying member 22 provided as shown in the third figure. Although the first tray 15 and the second tray 20 have a dimension difference in the length direction, the first tray 15 and the second tray 20 have a dimensional difference in the length direction. The member 22 is configured to be able to convey the positive paper 7 with a delay by the difference. Further, on the inner surface of the single tray 15, 20, grooves 24 for regulating the widths of the photosensitive material 6 and the positive paper 7 are provided in multiple stages, as shown in the fourth figure.

This is because photosensitive materials and positive paper of different sizes are prepared depending on the enlargement magnification of the original negative, and the method can be applied to any of these sizes. Although this embodiment shows a case where there are three grooves, the present invention is not limited thereto.

After passing through both trays 15 and 20, the photosensitive material 6 and the positive paper 7 are brought into close contact with each other by the overlapping contact roller 23 so that the front and rear ring portions and the lateral middle direction are aligned. 25 is a discharge roller for discharging the adhered photosensitive material and positive paper to the outside of the machine;
6 is an accumulation belt for curing the photosensitive material and positive paper that are in close contact with each other until the diffusion transfer is completed;
27 is a roller with claws for receiving and passing the adhered body 6- from the discharge roller 25 to the accumulation heald 26.

When the photosensitive material 6 and the positive paper 7 are brought into close contact with each other and cured on the accumulation belt 25 for a certain period of time, the unexposed silver halide on the photosensitive surface of the photosensitive material is transferred to the image receiving layer of the positive paper, and is reduced and fixed. Ru.

As described above, according to the present invention, the photosensitive material is placed at the image forming part of the original negative supported by the support means provided between the light source and the enlarger lens.

The photosensitive material can be positioned by the lamination storage means and exposed immediately as it is, and the exposed photosensitive material is fed out by the lamination storage means and transported with the photosensitive surface facing upward.
After being developed during transportation, the image-receiving layer of the positive paper is polymerized and adhered to the photosensitive surface, and as a result, the unsensitized silver halide on the photosensitive surface is transferred to the image-receiving layer of the positive paper, where it is reduced and fixed. , from the original negative.

This method has the unique effect of easily and quickly obtaining a positive image by enlarging the negative image at a necessary magnification in a single operation.

It goes without saying that the same effect can be obtained even if a reversal film is used for the original negative and the diffusion transfer light-sensitive material is made positive.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which FIG. 1 is a schematic cross-sectional front view, and FIG. 2 is an enlarged cross-sectional view of a laminated storage means for photosensitive materials.
FIG. 3 is an enlarged sectional view of the developing means and the adhesion means, and FIG. 4 is a sectional view taken along line 1--A in FIG. 2-Light source 3-Enlarger lens 4-Original negative 5-Magazine (layer storage means for diffusion transfer photosensitive material) 6-Diffusion transfer photosensitive material 7-Positive image 1〇-Transport mechanism] 3.-Forward/reverse roller 15-First tray
16-Charging roller 20-Second tray 23-Overlapping adhesion roller

Claims (1)

[Claims] A means for supporting the original negative provided between the light source and the enlarger lens, a means for accommodating the diffusion transfer photosensitive material in a layered manner at the image forming area of the original negative, and feeding out the exposed diffusion transfer photosensitive material to form a photosensitive surface. means for conveying the paper with the sheet facing upward; means for developing the diffusion transfer photosensitive material during transport; and means for bringing the positive paper into close contact with the photosensitive surface of the diffusion transfer photosensitive material after development so that the image-receiving layer overlaps with the photosensitive material. A diffusion transfer photosensitive material processing apparatus characterized by comprising: