JPH02210433A - Slide projecting device for copying machine - Google Patents

Abstract

PURPOSE:To load a projecting device on a copying machine which is original platen movable optical system fixed type and to obtain a copy from a slide by shifting the slide at fixed speed in synchronism with the shift of a photosensitive film of the copying machine for exposure. CONSTITUTION:Light emitted from a halogen lamp 4 is condensed by a light condensing optical system, the slide film 10 is lighted and the light is made incident on an imaging lens 11. The photosensitive film (f) fed from a film cassette 16 is image-exposed on an exposing table 19 while being fed at the fixed speed and a latent image is formed. Then, a motor 8 which shifts the slide film 10 is driven so as to shift the slide film 10 at the fixed speed in synchronism with the feeding speed of the photosensitive film (f) in according to a synchronous signal from the copying machine 14. Thus, the copy is obtained from the slide by loading the projecting device on the copying machine.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a slide projection device that is attached to a copying machine and is used to make copies from slides.

[Prior Art 1] Conventionally, a slide projection device has been put into practical use, which is attached to a copying machine with a fixed document table and is used to make copies from slides. This forms a projected image of the entire surface of the slide onto the document table glass of the main body of the copying machine.

[Problem to be Solved by the Invention 1] However, the method of projecting an image of a fixed slide as described above has a problem in that it cannot be applied to a copying machine having a fixed type of optical system for moving the document table.

The present invention has been made in view of this problem, and its object is to provide a slide projection device that can be attached to a copying machine with a fixed optical system for moving the document table and that can make copies from slides.

[Means for Solving the Problems] In order to achieve the above object, the present invention is composed of a light source, a condensing optical system, a slide moving mechanism, an imaging lens, and a folding mirror. It is designed to move at a constant speed in synchronization with the movement of the film.

[Example] Hereinafter, an example of the present invention will be described based on the drawings. 1st
FIG. 1 is a configuration diagram showing a slight projection device, which is an embodiment of the present invention, installed in a copying machine.

1 is the main body of the slide projector, which is attached to the copying machine 14 by a stay 13; 64 is a halogen lamp serving as a light source; the light emitted from the halogen lamp 4 is transmitted through a reflector 3, a condenser lens 5.7, and The light is condensed by a condensing optical system composed of a heat ray absorption filter 6, illuminates the slide film 10 to B, and then enters the imaging lens 11. The slide film 10 is held by a holder 9. Reference numeral 8 denotes a motor for moving the holder 9, and is engaged with the holder 9 via a not-illustrated speed reduction mechanism such as a gear. Reference numeral 11 denotes an imaging lens, which forms an image of the slide film IO onto a photosensitive film f, which will be described later, and exposes it to light.

2 is a mirror stand knit, which is engaged with and positioned in the opening of the copying machine 14. The mirror unit 2 is provided with a folding mirror 12, which folds back the light from the imaging lens 11 and irradiates it onto the photosensitive film f.

Next, the copying machine will be explained. The copying machine 14 shown in Example 7 is a photosensitive microcapsule type copying machine, and the photosensitive films f and 1 are coated with dispersed microcapsules that contain one dye precursor and are cured by being exposed to light of a specific wavelength.
A transfer sheet s coated with a color developer that reacts with a dye precursor to develop color is used.

Reference numeral 16 denotes a film cassette which houses the photosensitive film f and is configured to wind up and collect the used photosensitive film f. The photosensitive film f leaving the film cassette 16 is transported at a constant speed to the exposure table 19.
Upon receiving imagewise exposure, a latent image is formed. Thereafter, at the pressure developing roller 20, the exposed photosensitive film f and the transfer sheet s sent by the conveyance roller 22 are superimposed and strongly pressed. As a result, the microcapsules that were not hardened during exposure are destroyed, and the dye precursor The substance flows out and reacts with the color developer on the transfer sheet s to develop color.The transfer sheet s is then conveyed by the guide plate 28 and guide roller 24 and heated as it passes through the heating unit 25 to promote color development and gloss. After being processed, it is output to the outside of the machine by a discharge roller 26.

Reference numeral 17 denotes a refractive index gradient rod lens array, which is placed above the exposure stage 19 during normal copying from an original, and forms an image of the original to be copied placed on the original glass 15 onto the photosensitive film f. However, as shown in FIG. 1, when the slide projector is attached, it is configured so that it can be moved out of the exposure range. Also, the original table glass 15 is
The mirror unit 2 is moved to a position where there is no problem when it is installed. Also, when copying from a normal original, by removing the mirror unit 2 from the copying machine 14,
It is possible to make a copy. At this time, since the slide projector main body l is disposed outside the movement range of the document table glass 15, there is no problem with the copying operation.

Next, the operation of making a copy from a slide film will be explained. Slide film 1 held in holder 9
0 first moves down to the initial position. Next, at the same time as the photosensitive film f begins to be conveyed, the slide film 10 is also synchronously moved upward in FIG. 1 at a constant speed. Assuming that an A4 size copy is to be made from a normal 35 mm slide film, the magnification of the imaging lens l will be approximately 8 times. At that time, the moving speed of the image formed on the photosensitive film f, which is the moving speed of the slide film 10, is also 8 (@do). If there is a speed difference, the image quality will deteriorate significantly.Therefore, the ratio of the moving speed of the slide film 10 and the moving speed of the photosensitive film f during exposure is 1.
In this example, the ratio of 6 to 8 must be maintained.
A motor 8 for moving the slide film 10 is driven in accordance with a synchronization signal sent from the copying machine 14 so that the slide film 10 moves at a constant speed in synchronization with the transport speed of the photosensitive film f.

After scanning one screen, the slide film 10 is replaced with another slide film, or in the case of copying multiple sheets, it is returned to the initial position and the copying operation is repeated. On the other hand, a copy image is obtained from the exposed photosensitive film f through the process described above.

In this embodiment, the slide projector main body and Mira unit 1 to
Although the slide projector main body and the mirror unit may be constructed as a separate unit if higher optical precision is required.

Further, in this embodiment, a copying machine equipped with a slide projection device using a gradient index rod lens array has been described as an example, but the present invention can be similarly applied to a copying machine using a spherical lens.

[Effects of the Invention] As described above, according to the present invention, it is possible to realize a slide projection device that can be attached to a copying machine with a fixed document table moving optical system and can make copies from slides.

FIG.

Slide projection device body mirror unit Halogen lamp ・Condenser lens ・Morph slide film imaging lens wrap mira

Claims (1)

[Claims] A slide for a copying machine, consisting of a light source, a condensing optical system, a slide movement mechanism, an imaging lens, and a folding mirror, and characterized in that the slide is moved at a constant speed in synchronization with the movement of the photosensitive film of the copying machine during exposure. Projection device.