Self-supporting mask, method for production as well as use of sa

Details Self-supporting mask, method for production as well as use of sa Self-supporting mask, method for production as well as use of sa

1980-12-16

1983-01-25

Anderson, Bruce C.

Radiant energy

Radiant energy generation and sources

With radiation modifying member

2505051, G01J 100

Patent

active

043705561

ABSTRACT:
Mask for use in the treatment of substrates with an image-forming medium. The mask foil is thermally prestressed by the frame at the temperature of use. For this purpose, the material of the frame has a higher coefficient of thermal expansion than the material of the mask foil. A method of manufacturing such masks includes the step wherein the mask foil is mounted in the frame at a temperature which lies below the temperature of use.

REFERENCES:
patent: 3227880 (1966-01-01), Wideroe
patent: 3529960 (1970-09-01), Sloan
patent: 3742230 (1973-06-01), Spears et al.
patent: 4037111 (1977-07-01), Allan et al.
patent: 4101782 (1978-07-01), Seliger
patent: 4171489 (1979-10-01), Adams et al.

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