JPS5924039Y2 - photosensitive thermal copying machine - Google Patents

Description

[Detailed explanation of the invention] This invention consists of a device that overlaps and exposes an original and an intermediate paper having a photosensitive and heat-sensitive layer on the surface, and a copying device that has the exposed intermediate paper obtained from this and an image forming layer on the surface. The present invention relates to a photosensitive/thermal copying machine equipped with a device that heat-processes sheets of paper in an overlapping manner.

Conventional printers of this type have a built-in safety switch to prevent the heat generated from the light source of the exposure processing equipment during copying from heating the contact glass and causing it to break if copies are made continuously. For example, after making 10 or so copies in a row, a safety switch is activated and the light source is turned off. Therefore, if the safety switch is activated, the copying operation must be interrupted and the exposure processing device must wait until it cools down.

Moreover, since the light source is turned off by the safety switch even during copying, there is a drawback that in such a case, the copying fails and must be repeated.

The purpose of this invention is to provide a photosensitive thermal copying machine that eliminates the drawbacks of the conventional copying machine described above, effectively radiates heat from the exposure processing device, and thereby enables more continuous copying than the conventional copying machine. be.

This invention will be explained with reference to embodiments shown in the drawings.

As shown in FIG. 1, the photosensitive/thermal copying machine 1 is constructed by incorporating an exposure processing device 3 and a heat processing device 4 into a case 2. As shown in FIG.

5 is a light source, 6 is a light reflecting plate, 7 is a contact glass, 8 is a diffusion film coated on the surface of the contact glass 7, and 9 is a document holding plate, which constitutes an exposure processing device 8; 10 is an insertion port, 11 is a conveyance roller,
12 is a guide roller, 13 is a heating member, 14 is a heat shield plate,
15 is a discharge port, and these constitute the heat treatment device 4.

In the exposure processing apparatus 3, a heat absorbing section 16 of a vaporization heat absorbing member 18 is provided inside the light reflecting plate 6, which is composed of a heat absorbing section 16 that extends almost horizontally and a heat dissipating section 17 that extends upward from the end of the heat absorbing section 16.
is arranged, and its heat radiating part 17 is arranged to protrude outward from the light reflecting plate 6.

19 is a heat radiation fan, and 20 is an exhaust hole. As shown in FIG. 2, the vaporization heat absorbing member 18 is a closed container made of metal such as stainless steel, in which a working liquid 21 such as methanol is sealed and the internal pressure is reduced.
When the working liquid 21 in 6 vaporizes according to the ambient temperature, the surface of the heat absorption part 16 absorbs heat from the surroundings, and the two vaporized working liquid glasses condense and liquefy in the heat radiating part 17 by the action of the heat radiation fan 19. It is supposed to be done.

In such a light and heat sensitive copying machine, for example, if one stainless steel vaporization heat absorbing member 18 filled with methanol and having a diameter of 1 cm and a length of 20 cm is used, approximately 20 sheets can be continuously copied. If ten vaporization heat absorbing members 18 are used in parallel, approximately 100 sheets can be continuously copied.

FIG. 3 shows another embodiment, in which the vaporization heat absorbing member 18'
A plurality of heat absorbing fins 22 whose surfaces reflect light are provided around the heat absorbing portion 16' (on its upper surface in the figure) in order to increase the contact area and improve light reflection. Each is installed at an appropriate angle.

It goes without saying that this invention can be modified in various ways to the above embodiments.

This invention is constructed as described above, has a simple structure, and can effectively dissipate the heat generated by the exposure processing device during copying to the outside, thereby making it possible to make continuous copies of a large number of sheets. It has excellent effects such as being extremely convenient for use in a variety of applications.

[Brief explanation of the drawing]

Fig. 1 is a schematic sectional view showing one embodiment of this invention;
The figure is an enlarged sectional view of the main part of the one shown in Fig. 1, and Fig. 3 is an enlarged view of the main part showing another embodiment of this invention. 1... Photosensitive and thermal copying machine, 3... Exposure processing device, 4... Heat processing device, 6, 6'...
...Light reflecting plate, 16°16'... Heat absorption part, 1
7.17'...Heat radiation part, 18.18'...
...Vaporization heat absorption member, 19.19'... Heat radiation fan, 20... Exhaust hole, 21... Working liquid, 21'... Action Liquid gas, 22...
- Endothermic fins.

Claims (1)

[Scope of utility model registration request] A device for stacking and exposing an original document and an intermediate paper having a light-sensitive and heat-sensitive layer on its surface, and a device for stacking and heat-treating the resulting exposed intermediate paper and copy paper having an image-forming layer on its surface. In a light- and heat-sensitive copying machine equipped with a heat-absorbing member, the heat-absorbing member is formed of a heat-absorbing member extending horizontally and a heat-radiating member extending upward from the end of the heat-absorbing member, the heat-absorbing member having the shape of a closed container with a liquid sealed inside. A photosensitive/thermal copying machine, characterized in that the photosensitive copying machine is disposed inside the exposure processing apparatus, the heat radiating section is disposed outside the exposure processing apparatus, and a heat radiating fan and an exhaust hole are provided near the heat radiating section.