Projection printing using transparent covering layers

Details Projection printing using transparent covering layers Projection printing using transparent covering layers

G - Physics

03

B

95/94.4

G03B 27/00 (2006.01) G03B 27/62 (2006.01) G03F 1/14 (2006.01) G03F 7/20 (2006.01)

Patent

CA 1087898

Abstract of the Disclosure In a projection printing system the pattern mask, whose image is projected onto a light sensitive layer, is encased in a glass sandwich so that any dirt particles on the surfaces of the sandwich are out of focus and are not printed in the light sensitive layer. The purpose of this abstract is to enable the public and the Patent Office to rapidly determine the subject matter of the technical disclosure of the application. This abstract is neither intended to define the invention of the application nor is it intended to be limiting as to the scope thereof.

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