Vacuum contact exposure apparatus

Details Vacuum contact exposure apparatus Vacuum contact exposure apparatus

1986-12-10

1987-12-08

Wintercorn, Richard A.

Photocopying

Contact printing

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

G03B 2720

Patent

active

047115700

ABSTRACT:
A vacuum contact exposure device for exposing a light-sensitive sheet to another sheet, which comprises a housing with a hinged top cover, a contact exposure space formed between a glass plate and a flexible blanket inside said housing, and means for creating an underpressure in the housing, wherein in succession the housing and the contact exposure space are evacuated, the exposure space is closed, the atmospheric pressure is restored in the housing while the exposure space remains evacuated, and the lid is opened and the exposure carried out.

REFERENCES:
patent: 3455634 (1969-07-01), Guffon
patent: 3604800 (1971-09-01), Jordan et al.
patent: 3995955 (1976-12-01), Topfer
patent: 4054383 (1977-10-01), Lin et al.
patent: 4484813 (1984-11-01), Maher et al.
patent: 4551016 (1985-11-01), Maher et al.

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