JPH0532846Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an illuminator for copying film, particularly positive film.

(Prior art) Since film is a light-transmitting material that allows images with appropriate contrast to be produced by transmitted light, for example, if you try to copy a slide film (positive film) on the mounting surface of an electronic copying machine, it will be completely black. and cannot get the image. The situation is similar with negative film. A device for making copies of positive film using an ordinary copying machine is known as seen in Japanese Patent Laid-Open No. 57-210335.

However, the invention is merely a lamp house in which a light irradiation source is covered with a light-shielding cover and a holding plate or the like is provided on the irradiation surface, and is still at the theoretical stage. For example, when in use, a light-shielding cover must be attached by providing an engaging portion on the copying machine and engaging a pin there. Further, the original must be set on the document table of the copying machine using a translucent member and a presser plate.

Furthermore, the irradiation source is located at the top of the pyramid-shaped cover.
It is obvious that light source unevenness will occur because the light sources are arranged individually, and it is not possible to correspond to the shading of the original plate. In other words, it has problems that are not only very fundamental, but also difficult to handle and have poor performance.

(Technical Issues) The present invention was made focusing on the above points.
The problem is to make it possible to easily copy film using an electronic copying machine.

(Technical Means) In order to achieve the above-mentioned problem, the present invention provides a film mounting surface having a transparent surface 3 on which the film F can be mounted and which allows the film F to be viewed from the direction facing the document table. For the plate 1, the power supply part 7 provided on the side of the transparent surface of the mounting plate 1, the power supply part cover 4 that independently covers the power supply part 7, and the transparent surface 3 on which the film F is placed. Lighting board 10 that can be stacked so that it can be opened and closed
and a light source section including a plurality of rod-shaped light source lamps 11 for illuminating the illumination plate 10, and a light source section cover 8 that independently covers the light source section;
The brightness of the light source lamp 11 can be adjusted by a brightness control operator 6.

(Operation of the invention) The illuminator according to the invention has a light source lamp 11 that illuminates the film sandwiched between the film mounting plate 1 on which the film F is placed and the lighting plate 10 stacked thereon from the lighting plate side. Since the brightness is adjusted to be strong or weak, when copying a film by placing the transparent surface 3 of the film mounting plate 1 on the copying surface of an electronic copying machine, the brightness can be adjusted to the optimum brightness for the shading of the target film. The best copying results are obtained by being able to illuminate the film from the back side.

Furthermore, in terms of structure, the illuminator according to the present invention has a light source section completely independent from the power supply section 7, and the heat generated by the light source section is blocked by the light source section cover 8 and the power supply section cover 4, so that the light source section is completely independent from the power supply section 7. The part 7 will not be overheated.

Further, since the light source section is composed of a plurality of rod-shaped light source lamps 11, the illumination light evenly spreads over the entire surface of the illumination plate 10.

(Embodiment) The following will explain the embodiment shown in the drawings. 1 is a film mounting plate, 2 is a transparent window formed in a part of the plate, and 3 is a film mounting plate.
is the perspective surface on which the film F is placed,
In the embodiment, a transparent plate is laminated and pasted on the lower surface of the mounting plate in which the see-through window 2 is punched out. The mounting plate 1 may be entirely made of a transparent material, leaving a see-through window 2 and masking the periphery, but having the see-through window 2 has the advantage of making it easier to position the film F using the frame. Transparent surface 3
As a transparent plate, in addition to a normal transparent resin sheet, a diffusion net film, a dot screen, etc. can be used.

The film mounting plate 1 of the embodiment also serves as a base plate, and a power source cover 4 is provided on the side of the transparent surface. 5 is a power switch, 6 is a volume for illuminance control, and 7 is a power supply circuit. In addition, the lighting board 10
The illumination intensity can be adjusted not only by adjusting the brightness of the light source lamp 11 but also by changing the light transmittance of the illumination plate 10 itself by replacing or superimposing them.

Switch 5 has a built-in timer, and when it is turned on, it will turn on for the sufficient time necessary for copying and then turn off automatically, eliminating wasted power and
The system is designed to prevent more powerful light from being irradiated than necessary. Note that the reason why the power source section 7 is provided separately from the light source section described later is to prevent the heat of the light source section from having an adverse effect on the power source section 7.

The light source section is provided in a light source section cover 8 adjacent to the power supply section cover 4, and is connected at the upper part by a hinge 9 so that a light-transmissible illumination plate 10 provided on the lower surface overlaps the transparent surface 3. open and close. Reference numeral 11 denotes a halogen lamp as a light source, 12 its socket, 13 a reflector, and 14 a film retainer laminated on the illumination plate 10, which fits comfortably into the transparent window 2 (FIG. 4). The reflector 13 is the light source lamp 11
The light source cover 8 reflects the light from the light source toward the illumination plate 10 and further disperses it, and also blocks the heat of the light source from reaching the power source 7 .

When the film is a sheet film, it fits within the viewing window 2, but when a roll film is used, as illustrated in FIG. It is best to prevent bending. Reference numeral 17 indicates a handle for opening and closing, and reference numeral 18 indicates a transparent bag for protecting the film F.
Note that the power supply section cover 4 and the light source section cover 8 are designed to have a thin box shape as a whole.
Further, in order to increase the friction with the copying machine glass surface (original platen), a rubber material or the like can be attached to an appropriate position on the lower surface of the base plate.

(Effect of the invention) Since the present invention is constructed and operates as described above, it can be placed on the copying surface of an electronic copying machine and copies can be made by uniformly scattering light from the plurality of rod-shaped light source lamps 11, and In addition, the brightness control means illuminates the film at the optimal brightness for the shading of the original, making it possible to easily obtain a copied image with the same density and contrast as the original. This has the effect that negative images can be easily copied.

In particular, according to the present invention, since the power supply section and the light source section are separated and covered independently by the covers 4 and 8, the power supply section is not overheated.
Further, even if a halogen lamp is used, its brightness can be adjusted by the operator 6, so that the adverse effects of heat are less likely to be exerted on the film F, and optimum copying can always be carried out.

Furthermore, since the illuminator of the present invention is equipped with a power supply, it does not require an external power source and is independent from the copying machine, so it is possible to set the film in the illuminator at a different location, and it is possible to avoid misalignment. This makes handling extremely easy.

[Brief explanation of the drawing]

The drawing shows one of the illuminators for film copying according to the present invention.
Fig. 1 is a partially cutaway perspective view, Fig. 2 is a partially sectional view, Fig. 3 is a front view with the light source section raised, and Figs. 4 and 5 are film mounting diagrams. FIG. 3 is a partially enlarged sectional view of the placing plate. 1...Film mounting plate, 3...See-through surface, 4...
Power supply unit cover, 6... Brightness control volume, 7...
...Power supply unit, 8...Light source cover, 10...Lighting board,
11...Light source lamp, F...Film.

Claims (1)

[Scope of claim for utility model registration] (1) Set the film on the document table of an electronic copying machine,
This is a film copying illuminator that illuminates from the back for copying, on which the film F can be placed, and the film F is illuminated from the direction facing the document table.
A film mounting plate 1 having a transparent surface 3 on the mounting surface that allows the film to be seen through, a power supply unit 7 provided on the side of the transparent surface of the film mounting plate 1, and a power supply unit that independently covers the power supply unit 7. A lighting plate 10 that can be opened and closed over the transparent surface 3 on which the film F is placed.
It consists of a light source unit including a plurality of bar-shaped light source lamps 11 for illuminating the illumination plate 10, and a light source unit cover 8 that independently covers the light source unit. An illuminator for film copying configured to be adjustable by a brightness control operator 6 for adjusting brightness. (2) The illuminator for film copying according to claim 1, wherein the film mounting plate 1 comprises a diffusion net film or a halftone screen. (3) The illuminator for film copying according to claim 1, wherein the light source lamp 11 comprises a plurality of rod-shaped halogen lamps arranged in parallel to each other. (4) The illuminator for film copying according to claim 1, wherein the light source section includes a reflecting plate 13 interposed between the light source lamp 11 and the light source section cover 8.