JP2779817B2 - Suction and holding device for photosensitive materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial application field The present invention relates to a method of making a photosensitive material, a negative, a manuscript, a printing paper, a printed matter, etc. in a plane or in a photograph, plate making, printing and drafting, printing, exhibiting, displaying, etc. The present invention relates to a device for simply, inexpensively, and efficiently adsorbing and holding a curved surface, or for ensuring close contact.

(B) Prior art A method, apparatus, and tool for adsorbing a photosensitive material by pasting a thin plate having a small hole for adsorption, which was filed by the same applicant, with another plate having a ventilation path left, Japanese Patent Application No. 54-111931, Japanese Patent Application No. 55-114983, Japanese Patent Application No. 56-114561,
Japanese Patent Application No. 57-008394, Japanese Patent Application No. 57-134025, Japanese Patent Application No. 59-268011, and Japanese Patent Application No. 62-206030).

(C) Problems to be Solved by the Invention Among the above methods, any of the above-mentioned methods of sucking from the peripheral portion of the photosensitive material have drawbacks that the suction efficiency and operability are poor in order to achieve the purpose. Was. To be efficient, a number of small holes for suction must be made around the original, such as a thin photosensitive material. In the case of a pre-made negative carrier and a contact printer for duplication, the negative must be removed (and in the case of When set, the rubber plate portion must be compressed by that thickness. Air leaks easily occur, so a strong crimp and a strong pump are required. In addition, it is difficult to perform this process if there is no gap inside the carrier to attach both the thin plate and the rubber plate, as in the case of a pre-made negative carrier, and it is difficult to install a stopper for positioning the negative or the original. There was a major operational problem that positioning was difficult.

(D) Means for Solving the Problem An embodiment in which the present invention is implemented as an adsorption device will be described with reference to the drawings.

FIG. 1 shows an embodiment of a suction base plate used in the suction holding device.

On a support having an opening 2 and an air discharge unit 3 punched out to the image size, a rubber plate 4 having the same outer periphery as the photosensitive material and the same opening as the opening 2, and the thickness of the original to be held around the rubber plate 4 Rubber plate 5 thicker than rubber plate 4 with a step
Are arranged so that a narrow groove-shaped gap is formed between the rubber plate 4 and the rubber plate 4.

(E) Function As the pressure bonding plate 9 for pressing the photosensitive material or the like against the suction base plate, in the case of a negative carrier holding a transparent original, the negative is pressed using a transparent glass.
In the case of an opaque document such as an easel, a printing table, or a display panel, a normal opaque plate is used. The purpose can be easily achieved by arranging another adsorption plate for adsorbing.

In any case, it is possible to easily bring the document positioning stopper 7 to the entire periphery of the document at the groove position of the groove-shaped ventilation path 6.

(C) Effects of the Invention Therefore, the original can be set easily and quickly by relying on the stopper. If the original is set, the original is pressed down by the pressing plate and the air is sucked from the air discharge unit 3, the original and the pressing plate (glass plate) can be set. ) Is sucked from the entire periphery of the document through the ventilation path 6. In this case, when the original is inserted, the level difference between the surfaces of the rubber plate 4 and the rubber plate 5 is averaged, and the original is sucked from the entire periphery of the original. It can be achieved with much weaker suction than before, it is not necessary to drill many small holes, so it is cheap to manufacture, it is hard to cause
Unprecedented effects can be obtained in both adsorption efficiency and operability.

[Brief description of the drawings]

The figure shows an embodiment of the suction base plate of the suction holding device of the present invention,
FIG. 1 is a cut-away side view, and FIG. 2 is a front view.
In the drawing, 1 is a support plate, 2 is an opening, 3 is an exhaust port, 4 is a rubber plate, 5 is a rubber plate, 6 is a groove-shaped air passage formed by a gap between 4 and 5, and 7 is a stopper for positioning a document. , 8 is the original position,
Reference numeral 9 denotes a crimp plate.

Claims (1)

(57) [Claims] 1. A first rubber plate having the same size as a photosensitive material and having the same opening as a photosensitive material, and a second rubber plate on an outer periphery thereof, on a support having an opening punched to a screen size and an air exhaust port. A rubber plate is arranged with a narrow gap to create a groove-shaped ventilation path, a photosensitive material is set on the first rubber plate and pressed against a glass plate or an adsorption plate, and air is discharged from the air exhaust port. A suction holding device characterized in that air is discharged between the photosensitive material and the glass plate or the pressure plate so that the photosensitive material or the original is suction-fixed to the glass plate or the pressure plate.