Contact print test window

Details Contact print test window Contact print test window

1975-05-30

1977-01-18

Moses, R. L.

Photocopying

Contact printing

Frames

355 74, G03B 2728

Patent

active

040036545

ABSTRACT:
A sheet of opaque material has a window therein and marks on the sheet indicating the positioning of an edge of a test print for placement over the window to expose different areas of the test print in succession.

REFERENCES:
patent: 2246920 (1941-06-01), Kromholz
patent: 2834273 (1958-05-01), Bartilotta
patent: 2915941 (1959-12-01), Finberg
patent: 3709591 (1973-01-01), Alzmann

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