Print mask switching device

Details Print mask switching device Print mask switching device

Filed on

1983-02-16

Date issued

1984-09-04

Examiner

Hayes, Monroe H.

Patent Class

Photocopying

SubClass

Projection printing and copying cameras

SubSubClass

Detailed holder for photosensitive paper

Other Related Categories

G03B 2758

Type

Patent

Status

active

Patent number

044694385

Description

ABSTRACT:
A print mask switching device in a photographic printing unit in which a plurality of print masks of different size are provided. The print mask necessary for printing is set at the printing position. The plurality of print masks of different size are detachably set on a print mask supporting board which is movable from the printing position. A drive system is provided for opening and closing a print paper guide associated with each of said print masks to close an opening thereof.

REFERENCES:
patent: 3588248 (1971-06-01), Freund
patent: 3674365 (1972-07-01), Kohler

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