Coating apparatus – Work surface shields – masks or protectors
Patent
1995-04-27
1997-09-23
Lamb, Brenda A.
Coating apparatus
Work surface shields, masks or protectors
427282, B05C 1111
Patent
active
056699727
ABSTRACT:
A mask for printing a pattern on a substrate comprises a sheet preferably of metal having a printing pattern thereon comprising through mask openings in the sheet. The through mask openings are interconnected by tabs or bridges which have a structure which provides a bending moment in a portion of the tab when a force is applied to the mask to force material to be deposited on the substrate through the mask openings. A preferred tab structure has a step shape and at least one through opening in the tab. The step shape and through mask opening both provide bending moments in the tab and the through opening also provides enhanced patterning definition because the deposition material flows both under the tab and through the through tab opening. The masks have a longer operating life than conventional masks and enhanced operating characteristics.
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Cox Harry David
Littell Connie Fassett
Shroedl Richard Michael
Trumpetto John Amodio
Vanca Michael Stephen
International Business Machines - Corporation
Lamb Brenda A.
Soucar Steven J.
Tomaszewski John J.
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