Print mask device

Details Print mask device Print mask device

1984-05-02

1986-02-04

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Detailed holder for photosensitive paper

G03B 2758

Patent

active

045681805

ABSTRACT:
A print mask device for which a mask opening size can be easily set without removing the print mask device from the printing device in which it is installed. First and second L-shaped mask members are provided, each having edges extending parallel to the widthwise and lengthwise directions of the print paper, with the mask opening being defined between the two mask members. Each of the mask members has a pair of externally extending racks affixed thereto engaged with and slidable along respective rack gears, the two rack gears extending parallel to the widthwise and lengthwise directions of the print paper. The rack gears can be rotated by associated pulse motors to automatically set the mask opening.

REFERENCES:
patent: 3737227 (1973-06-01), Harter et al.
patent: 3807861 (1974-04-01), Nosco et al.

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