JP2551553Y2 - Copy camera - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diffusion-transfer type copying camera used for producing a composition.

[0002]

2. Description of the Related Art In a diffusion transfer type copying camera, a latent image is formed by exposing a planar image of an original to a photosensitive material called negative paper, and an image receiving material called positive paper is formed on the exposed photosensitive material. Are superimposed on each other, and this is put into a developer, and the image recorded on the photosensitive material is diffused and transferred to the image receiving material. In order to form a latent image on the photosensitive material, the type of imaging a document by copying camera, must be without distortion can accurately record up large document about A ₃ size, and have a scaling function To do so, the copying camera becomes very large and heavy.

For this purpose, a scanning unit including a light source is caused to travel, and the surface of a document placed on a transparent glass platen is scanned from below in a slit shape by the scanning unit, so that the reflected light from the document is conveyed. When the photosensitive material in the shape of a circle is irradiated through a lens, the apparatus can be simplified and miniaturized, and can be copied as if it were a copy. Also, in order to provide a reduction / enlargement function, the ratio of the optical path length from the original to the lens and from the lens to the photosensitive material can be changed, and the ratio between the scanning speed of the scanning unit and the feeding speed of the photosensitive material can be adjusted. It is.

Such a copying camera scans a slit-shaped image from an exposure box on a sheet-like photosensitive material to be conveyed, and superposes an image receiving material on the exposed photosensitive material. It comprises a transfer box for transferring an image recorded on a photosensitive material to an image receiving material, and an exposure box is arranged on the transfer box. The pins are positioned and fixed by pins.

[0005]

By the way, in such a copying camera, in order to accurately transfer the image of the original to the image receiving material, it is necessary to completely match the traveling axis of the scanning unit with the transport axis of the photosensitive material. . If there is an angle between the direction in which the scanning unit travels and the direction in which the photosensitive material is conveyed, the transferred image will be distorted into a parallelogram. Therefore, the exposure box and the transfer box must be accurately positioned and fixed.

However, as described above, the exposure box and the transfer box are positioned by the pins. However, the positions of the pins and the pin holes vary, the scanning unit travels in the exposure box, and the photosensitive unit in the transfer box. Since there are variations in the transport direction of the material, if the pins erected on the transfer box are fitted only into the pin holes of the exposure box, the direction between the direction in which the scanning unit travels and the direction in which the photosensitive material is transported Angles can be created.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a copying camera which can completely match a traveling axis of a scanning unit and a transport axis of a photosensitive material with a simple structure and can obtain an accurate transferred image. And

[0008]

In order to achieve the above object, the present invention provides an exposure box having a built-in scanning unit that travels while exposing a document placed on a document table in a slit shape, and transporting the document. Diffusion transfer type copying consisting of a transfer box that scans a sheet-like photosensitive material with a slit-like image from an exposure box, overlays the image receiving material on the exposed photosensitive material, and transfers the image recorded on the photosensitive material to the image receiving material. In the camera, the exposure box is rotatably arranged on the transfer box, and after the traveling axis of the scanning unit and the transport axis of the photosensitive material are matched, the exposure box is fixed to the transfer box.

[0009]

That is, since the exposure box is rotatably arranged on the transfer box, it is possible to adjust the angle of the exposure box in each copying camera so that the traveling axis of the scanning unit coincides with the transport axis of the photosensitive material. It is possible to fix both of them afterwards, so that an accurate transferred image can be obtained.

[0010]

FIG. 1 conceptually shows a diffusion transfer type copying camera, which comprises an exposure box A and a transfer box B. In Figure 1, on the upper surface of the exposure box A, for example, up to A ₃ platen 11 clear glass of the document 50 can be mounted in size and is located, it has become tabletop. A scanning unit 20 is arranged directly below the document table 11 so as to be movable at a variable speed V.
The scanning unit 20 is of a two-lamp type equipped with two tube-shaped light source lamps 21 each surrounded by a gutter-shaped mirror 22, and scans the original 50 in a slit shape. M ₁ is disposed. Therefore, the scanning unit 20 scans the entire surface of the original 50 by moving the reflected light of the document 50 is reflected in a horizontal direction by the mirror M _1. Here, the light source lamp 21 has a rated voltage of 100
V, the rated power consumption is 330 W.

The first mirror unit 31 and the second mirror unit 32 have a pair of flat mirrors M ₂ and M ₃ and a pair of flat mirrors M ₄ and M ₅ mounted on a roof at an angle of 45 °. The optical axis is disposed on both sides of the lens 40 in the horizontal direction. Accordingly, the lens optical reflection of the original 50 is reflected by the mirror M ₁ is reflected by the mirror M _2, M ₃ 40
Incident on the lens and exiting the lens 40 are reflected by mirrors M ₄ and M ₅
In reflected and further emitted from the reflected and exposure box A by the plane mirror M _6.

The first mirror unit 31 has a speed of 1/2
V, that is, it moves in the same direction as the scanning unit 20 at half the speed of the scanning unit 20, so that the optical path length from the document 50 to the lens 40 does not change with the movement of the scanning unit 20. And the first mirror unit 3
The initial position of (1) (position to start moving) and the installation position of the second mirror unit 32 can be changed, thereby changing the optical path length from the original 50 to the lens 40 and from the lens 40 to the photosensitive material 60. , A reduction / enlargement ratio can be set. However, scanning unit 2
The scan 0 and the reduction / magnification in the direction perpendicular to the original can be set by changing the optical path length from the original 50 to the lens 40 and from the lens 40 to the photosensitive material 60. It is necessary to adjust the ratio between the scanning speed V of the original 50 and the moving speed V ₀ of the photosensitive material 60. For this reason, the scanning speed V is changed in conjunction with the reduction / enlargement magnification, and the reduction / enlargement magnification in the scanning direction and the direction perpendicular to the scanning are made the same.

The photosensitive material 60 has a speed V within the transfer box B.
₀ moves horizontally. The photosensitive material 60 is obtained by coating a photosensitive layer on the surface of a support made of paper or film.
When exposed by the slit image emitted from the exposure box A, a latent image corresponding to the image of the original 50 is formed on the photosensitive layer. The photosensitive material 60 is contained in a magazine 61 in the form of a roll. The photosensitive material 60 is fed horizontally by a transport roller 63 and cut into a predetermined length by a cutter 62 to form a sheet. Then, as described above, the sheet-shaped photosensitive material 60
The slit image of the original 50 is sequentially exposed.

The image receiving material 70 is obtained by coating an image receiving layer on the surface of a support made of paper or film, and is sent out from a magazine 71 by a transport roller 73. Then, the image receiving material 70 is superimposed on the exposed photosensitive material 60, and
After entering the developing solution in 74, it is pressed by the squeezing roller 75. In this developing solution, the latent image of the photosensitive layer is developed into blackened silver, while the silver halide in the unexposed portion is changed to a water-soluble silver salt and diffuses into the image receiving layer of the image receiving material 70. Then, the silver salt in the image receiving layer is reduced by the developer to form a black silver image. In other words, the image of the original 50 is copied onto the image receiving material 70,
The image receiving material 70 and the photosensitive material 60 are taken out from the outlet 12.

Next, the top plate 90 of the transfer box B is
The pins 91 and 92 are erected diagonally and fitted into pin holes 81 and 82 formed in the bottom plate 80 of the exposure box A, respectively, and positioned. Here, the pin 91 is directly erected on the upper plate 90, while the pin 92 is
As shown in the figure, the erection plate 96
Is mounted on the back side of the upper plate 90 as shown in FIG. To explain this further, mounting holes 93, 93 are drilled at both ends of the mating plate 96, while the top plate 90
Are provided with long mounting holes 95, 95.
A through hole 94 larger than the pin 91 is formed therebetween, and the pin 92 is erected while being inserted into the through hole 94. Then, as shown in FIG.
The fixing plate 96, the top plate 90 and the bottom plate 80 are fixed with 8, but the mounting holes 95 and 95 are long holes and the through holes 94 through which the pins 92 are inserted are larger than the pins 92.
92 positions can be adjusted. That is, pin 91
Is a fixed pin, and pin 92 is a movable pin.

Then, the bolt 99 is loosely temporarily tightened to the nut 98, and the position of the pin 92 is adjusted so that the pin 92 can be adjusted.
Insert 91 and 92 into the pin holes 81 and 82 respectively. Therefore, the exposure box A is rotatable about the pin 91 with respect to the transfer box B as shown in FIG.
Note that the actual rotation angle is within ± 1 ° at most, and FIG. 5 is exaggeratedly illustrated. Then, the image is actually copied to the image receiving material 70 using the inspection document. At this time, if the traveling axis of the scanning unit 20 does not completely coincide with the transport axis of the photosensitive material 60 and an angle is formed between the direction in which the scanning unit 20 travels and the direction in which the photosensitive material 60 is transported,
The transferred image is distorted into a parallelogram. While confirming this state, the exposure box A is rotated and the scanning unit 2 is rotated.
Make the traveling axis of 0 coincide with the transport axis of the photosensitive material 60. Then, retighten the bolt 99 to the nut 98 and fix it completely. Therefore, the transferred image is not distorted into a parallelogram,
An accurate transfer image can be obtained.

[0017]

As described above, in the diffusion transfer type copying camera according to the present invention, since the exposure box is rotatably arranged on the transfer box, the position of the pin and the pin hole varies, and the position of the exposure box in the exposure box is reduced. Adjusting the angle of the exposure box so that the traveling axis of the scanning unit coincides with the transport axis of the photosensitive material despite the variation in the traveling direction of the scanning unit and the variation in the transport direction of the photosensitive material in the transfer box. Since both are fixed afterwards, a copying camera capable of obtaining an accurate transferred image can be obtained.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a diffusion transfer type copying camera.

FIG. 2 is an explanatory diagram of a laminated plate.

FIG. 3 is an explanatory plan view showing a mounting state of a pin.

FIG. 4 is an explanatory cross-sectional view of a mounted state of a pin.

FIG. 5 is an explanatory diagram of a rotating state.

[Explanation of symbols]

 Reference Signs List A Exposure box B Transfer box 11 Document table 20 Scanning unit 21 Light source lamp 40 Lens 50 Document 60 Photosensitive material 70 Image receiving material 80 Exposure box bottom plate 81, 82 Pin hole 90 Transfer box top plate 91, 92 pins 96 Mating plate

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Katsutoshi Kabata 262 Kondo, Tatebayashi, Gunma Prefecture Inside Ushio Gunma Electric Co., Ltd. References JP-A-57-133469 (JP, A) JP-A-1-221732 (JP, A)

Claims (1)

(57) [Scope of request for utility model registration] 1. An exposure box having a built-in scanning unit that travels while scanning a document placed on a document table in a slit shape, and exposing a slit image from the exposure box to a conveyed sheet-like photosensitive material. In a diffusion transfer type copying camera comprising a transfer box for superimposing an image receiving material on an exposed photosensitive material and transferring an image recorded on the photosensitive material to the image receiving material, an exposure box is rotatably arranged on the transfer box. And an exposure box fixed to the transfer box after the traveling axis of the scanning unit is made to coincide with the transport axis of the photosensitive material.