Vacuum contact printing device and exposure apparatus and origin

Details Vacuum contact printing device and exposure apparatus and origin Vacuum contact printing device and exposure apparatus and origin

1991-03-07

1992-01-21

Wintercorn, Richard A.

Photocopying

Contact printing

Fluid pressure retention of carrier and receiver in exposure...

355 99, 355114, G03B 2720

Patent

active

050831569

ABSTRACT:
A vacuum contact printing device comprises a pair of frame members for supporting a pair of originals disposed on both sides of a base member and a pair of transparent plates disposed outside the frame members. A first vacuum chamber is formed between the paired originals and a second vacuum chambers are formed between the paired originals and the transparent plates. A vacuum device is connected to the first and second vacuum chambers for exhausting inner air in the first and second chambers for reducing inner pressures thereof and being capable of releasing the vacuum condition at least in the second vacuum chamber. There is provided an exposure apparatus to which the original contact printing device is applicable, in which original contact devices are movable from exposure positions to other positions and a supplemental original contact device is movable to the exposure position. The original contact device includes a first slide mechanism for supporting a first frame member so as to be movable in a direction normal to the base member and a second slide mechanism supported by the first frame member for supporting a second frame member so as to be movable in a direction normal to the base member.

REFERENCES:
patent: 601882 (1898-04-01), Schwarz
patent: 3531198 (1970-09-01), Delp
patent: 3622241 (1971-11-01), Dexter
patent: 3689153 (1972-09-01), Suzuki
patent: 4721980 (1988-01-01), Yazaki
patent: 4764791 (1988-08-01), Omata et al.
patent: 4827316 (1989-05-01), Brown

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