Paper mask assembly for use in photographic printing

Details Paper mask assembly for use in photographic printing Paper mask assembly for use in photographic printing

1987-08-31

1988-08-23

Hayes, Monroe H.

Photocopying

Contact printing

Frames

355 74, G03B 2728

Patent

active

047664924

ABSTRACT:
A paper mask assembly having a frame which holds a paper mask disposed very near a photographic paper. When changing the size of the opening of the paper mask or replacing a paper mask with another one having an opening of different size, the paper mask is liable to damage the photographic paper. To avoid this, the frame can be pivoted by means of a working arm driven by a reversible motor. The working arm has one end pivotally mounted on the frame and the other end fixedly mounted on the drive shaft of the motor.

REFERENCES:
patent: 2895396 (1959-07-01), Pollock et al.
patent: 4325630 (1982-04-01), Kimura et al.
patent: 4469438 (1984-09-01), Itikawa
patent: 4607949 (1986-08-01), Hakamada et al.

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