Printing frame

Details Printing frame Printing frame

1986-04-07

1987-06-23

Wintercorn, Richard A.

Photocopying

Contact printing

Frames

G03B 2704

Patent

active

046748687

ABSTRACT:
A printing frame for the preparation of copies from a master. The printing frame has a mat which is secured to a base plate such that the mat is free to shift in all directions. Photographic material and the master are placed on the mat, and a transparent plate is placed over the material and the master. Vacuum is applied to the frame to adhere the mat, the material and the master to the transparent plate. Because the mat can move freely, hollow spots or non-adhering spaces are eliminated.

REFERENCES:
patent: 2399975 (1946-05-01), Ball
patent: 4450536 (1984-05-01), Schroeder
patent: 4533240 (1985-08-01), Jasperson

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