JPS623256A - Developing and transferring device - Google Patents

Abstract

PURPOSE:To perform the development of a sensitive material and the diffusion transfer to a transfer sheet easily and efficiently by backing the sensitive material having a diffusion transfer type heat developed photosensitive layer and a transfer sheet which is brought into contact with the sensitive material with a conductive layer, and flowing a current to the conductive layers and generating heat. CONSTITUTION:A heat processing control part 10 flows currents to a carry-in roller 6 and a carry-out rollers 7 through cords 8 and 9 when the carry-in roller 6 and carry-out roller 7 stop while clamping the head and tail ends of the composite body of the sensitive material 1 and transfer sheet 2. The current value and feed time are calculated previously from the resistance value of a conductive layers with which the sensitive material 1 or transfer sheet 2 is backed, so the sensitive material 1 or transfer sheet 2 generate heat and rise in temperature instantaneously to necessary temperature. Consequently, an exposed part of the sensitive material 1 is developed thermally and a silver image appears; and diffusive dye is formed corresponding to the image and transferred to the transfer sheet 3 which contacts the sensitive material 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a development and transfer device for a photosensitive material having a diffusion transfer type heat-developable photosensitive layer.

[Conventional technology]

Conventionally, as a heat developing means for heat-developable photosensitive materials used in dry silver, etc., the photosensitive material is lined with a conductive layer, and the photosensitive material itself generates heat by passing an electric current through the conductive layer. No. 5-22737) was known. This heat treatment method was superior to heat treatment methods using heaters in that it could uniformly heat the photosensitive material, but with heat-developable photosensitive materials such as dry silver, the photosensitive material itself develops color to express the image. However, there is a problem that the color may change due to subsequent heat, and the storage stability of one image is poor.

[Purpose and structure of the invention]

This invention relates to a light-sensitive material having a diffusion transfer type heat-developable photosensitive layer (for example, the applicant's (Patent Application No. 1983-104900, etc.)
With the development of ``Diffusion transfer type heat-developable photosensitive layer'', a conductive layer is lined with a photosensitive material and a transfer sheet that is brought into close contact with the photosensitive material, and an electric current is applied to the conductive layer between the photosensitive material or the transfer sheet. Utilizes a heat treatment method that generates heat by flowing
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1-1f 9-h0...] The purpose of the present invention is to provide a development transfer device that can perform diffusion transfer simply and efficiently.
- [Embodiments] Next, the present invention will be described based on the embodiments shown in the accompanying drawings.

Figure 1 shows a development transfer device that realizes a process in which a transfer sheet 2 is brought into close contact with an exposed photosensitive material 1 and heat-treated while in close contact to simultaneously perform development and diffusion transfer. This is a development and transfer device that realizes a process in which a heat treatment section for developing the material 1 and a heat treatment section for bringing the transfer sheet 2 into close contact with each other after development and performing diffusion transfer are independent. One or both of the sensitive material used here and the transfer sheet 2 that is brought into close contact with the material are lined with a conductive layer.

The developing and transferring device shown in FIG.
a contact portion 4 for tightly contacting the transfer sheet 2 supplied along the re-guide member 3 in a direction perpendicular to the supply direction;
A heat treatment section 5 is provided behind it. The heat treatment section 5 is equipped with a carry-in roller 6 and a Ta-out roller rough at a position where the front and rear ends of the photosensitive material 1 and the transfer sheet 2 can be sandwiched from above and below. ．．
The 141-person roller 6, to which a heat treatment control section 10 capable of passing an electric current is connected via the contact section 9, holds the photosensitive material 1 and the transfer sheet 2, which have passed through the contact section 4 and are in close contact with each other, with appropriate pressure. When the tip of the composite of the cough sensitive material 1 and the transfer sheet 2 bites into the rotating carry-out roller 7, the convey-in 2 is sent toward the carry-out roller 7 along a guide member (not shown). 6°7 are designed to stop together. On the other hand, the heat treatment control section 10 controls the carry-in roller 6 and Il! ! When the composite body of the rough material 1 and the transfer sheet 2 is stopped with the front and rear ends sandwiched together, code 8 is generated.
9, the current is applied to the loading/unloading rollers 6 and 7. The current value and current application time at this time are calculated in advance from the resistance value of the conductive layer lining the sensitive material 1 or the transfer sheet 2.

The sensitive material 1 or the transfer sheet 2 generates heat and instantly rises in temperature to a predetermined temperature (for example, 1'L0 to 200°C).

Therefore, the exposed portion of the exposed photosensitive material 1 is thermally developed and a silver image appears, and a diffusible dye is formed accordingly, and the diffusible dye is diffused into the transfer sheet 2 that is in close contact with the photosensitive material 1. It will be transcribed. The heat treatment time required for this development and diffusion transfer is 3 times when the temperature at the time of heat generation is 150°C.
A time of about 0 seconds is satisfactory.

Since the carry-in/take-out rollers 6.7 are driven again as the energization time elapses, the composite of the photosensitive material 1 and the transfer sheet 2 after development and transfer is transferred to the next process (separation section) by the IB delivery control and rough action. IM is now being sent.

In addition, in the above embodiment, the heat treatment section 5 includes the carry-in and carry-out rollers 6.
The current from the heat treatment control unit 10 is passed through the conductive layer of the photosensitive material 1 through the lower roller 7 to generate heat, and the current is passed through the conductive layer of the transfer sheet 2 through the upper roller to generate heat. However, it goes without saying that it is also possible to generate heat by passing a current through the conductive layers of both the photosensitive material 1 and the transfer sheet 2 through the upper and lower rollers. The contact roller constituting the contact section 4 that brings the transfer sheet 2 into close contact with the material 1 has a built-in heater, or a separate preheating means is provided before supplying the transfer sheet 9 to the contact section 4 to heat the transfer sheet 2 to 60 to 60 IQ.
If it is possible to heat the film to a constant temperature within the range of Q'C, it is possible to further improve the degree of adhesion between the photosensitive material 1 and the transfer sheet 2.

The contact surfaces of the photosensitive material 1 and the transfer sheet 1-2 supplied to the contact section 4 are desirably static-eliminated and dust-removed by a static illuminator and an air cleaner (not shown).

The developing and transferring device shown in FIG. 2 includes a heat treatment section 5a for developing the exposed photosensitive material 1 at the front and rear of the contact section 4, and a heat treatment section 5a for performing diffusion transfer onto the transfer sheet 2 that is in close contact with the photosensitive material 1 at the contact section 4. 0 heat treatment parts 5a each independently provided with parts 5b
, 5b is provided with a carry-in roller 6 and a carry-out roller 7 at positions capable of supporting the front and rear ends of the photosensitive material l and the transfer sheet 2, as in FIG. , in some cases both upper and lower rollers) are connected to a heat treatment control unit 10 via a cord 8.9.

Therefore, before the exposed photosensitive material 1 reaches the contact area 4, its front and rear ends are first sandwiched between the worker roller 6 and the IM exit roller rough in the heat treatment section 5a, and the heat treatment control section 10 is operated to control the conductivity of the exposed photosensitive material 1. A current flows through the layer to generate heat, and after development, the layer is supplied to the contact area 4. The transfer sheet 2 is supplied to the contact portion 4 through the guide portion 3 and is brought into close contact with the photosensitive material 1. The composite of the photosensitive material 1 and the transfer sheet 2 is in the contact area 4
After passing through the transfer sheet 2, the front and rear ends are held between the loading and unloading rollers 6 and 7 of the heat treatment section 5a configured in the same manner as described above, and the heat treatment control section 10 is operated to generate heat again, and the developed image dye is transferred to the transfer sheet 2. is diffusely transferred to. In this case, since the heat treatment sections for development and diffusion transfer are independent, the heating temperature in the transfer heat treatment section 5b is kept below the heating temperature in the development heat treatment section 5a to prevent development of the photosensitive material 1 from proceeding during transfer. It is important to do so.

For example, since the normal photosensitive material 1 is exposed to light by heating at 150°C for 30 seconds, the heat treatment time in the transfer heat treatment section 5b and the transfer heat treatment section 5b is 2 seconds to 3 seconds depending on the heat generation temperature.
However, it is not necessary that the reheat treatment parts 5a and 5tl have the same time.

Further, the conveyor belt (or roller) 6 used in the development heat treatment section 5a is made of a material (for example, fluororesin) to which the diffusible dye formed by development does not adhere;
Of course, a surface-treated material may be used.

〔Effect of the invention〕

As described above, the development and transfer device according to the present invention has a diffusion transfer type heat-developable photosensitive layer that thermally develops a latent image formed by exposure and stores the resulting image dye in the form of a non-photosensitive transfer sheet. Development and diffusion transfer to a transfer sheet that is in close contact with the photosensitive material are characterized by the provision of a heat treatment means that generates heat by passing an electric current through the conductive layer that lines the photosensitive material and the transfer sheet. Therefore, it is possible to generate heat uniformly over the entire surface of the photosensitive material and the transfer sheet, and the development and transfer can be carried out simply and efficiently.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention +711, with FIG. 1 being a schematic sectional view showing a first example, and FIG. 2 being a schematic sectional view showing a second example. 1.--Sensitive material 2.--Transfer sheet 4--Adhering section 5a, 5b.--Heat treatment section 6-1
Input roller 7・-l! ! ! Out roller 8...Code 10...-Heat treatment control unit patent Applicant Konishi Roku V Shin Kogyo? 1', Shikisha Figure 1 O Figure 2

Claims (1)

[Claims] A heat treatment means that can carry out development and transfer by lining a conductive layer on a photosensitive material having a diffusion transfer type heat-developable photosensitive layer and a transfer sheet in close contact with the photosensitive material, and generating heat by passing an electric current through the conductive layer of the photosensitive material or the transfer sheet. A development transfer device characterized by comprising: