Photographic enlarger for producing giant-size prints

Details Photographic enlarger for producing giant-size prints Photographic enlarger for producing giant-size prints

1978-10-26

1980-10-21

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Focus or magnification control

355 18, 355 43, 355 72, G03B 2770

Patent

active

042290988

ABSTRACT:
A photographic enlargement system of the kind used in producing posters or giant-size prints has been improved by installing the focal plane, the photographic-paper feeding mechanism and a focal-plane-masking roller blind system on a carriage which can be moved toward or away of the optical enlarging system for focussing the image. The carriage forms a compact and self-contained unit which is enclosed in a light-tight fixed casing with which the optical enlarging system is integral.
Convenience and reliability of use are the distinguishing features.

REFERENCES:
patent: 3146661 (1964-09-01), Young
patent: 3207030 (1965-09-01), Polland
patent: 3315561 (1967-04-01), Boutigue

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