Vacuum apparatus blanket and method of making the same

Details Vacuum apparatus blanket and method of making the same Vacuum apparatus blanket and method of making the same

1986-08-29

1987-11-10

Wintercorn, Richard A.

Photocopying

Contact printing

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

4273935, 428909, G03B 2720

Patent

active

047053925

ABSTRACT:
Method and means are disclosed for producing an improved vacuum blanket with a pattern of air-flow passages that is formed on the underside surface of the air-impervious blanket using conventional printing techniques. The blanket forms an air-tight seal over and around the perimeter of a glass exposure plate, and residual air may be evacuated from beneath the blanket through porous regions beyond the edges of the glass exposure plate.

REFERENCES:
patent: 4234640 (1980-11-01), Wittel
patent: 4423851 (1984-01-01), Heitmann

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