Device for aligning a photomask on a printed circuit board

Details Device for aligning a photomask on a printed circuit board Device for aligning a photomask on a printed circuit board

1977-11-14

1979-06-26

Wintercorn, Richard A.

Photocopying

Contact printing

Superimposed carriers

355 86, 355 99, 355125, G03B 2702

Patent

active

041591763

ABSTRACT:
There is described an exposure frame for aligning and holding photomasks in registration with a printed circuit board coated with a light sensitive material. The printed circuit board is held between an independently adjustable mounting strip and slides. A contact strip is floated on the mounting strip by a spring mounting to permit the slides to position the printed circuit board relative to the photomask. The photomask, in turn, is mounted on the adjustable mounting strip. This facilitates good registration between the board and mask.

REFERENCES:
patent: 3580676 (1971-05-01), Sarka et al.
patent: 3639056 (1972-02-01), Gerson

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