Enlarger for use in photography

Details Enlarger for use in photography Enlarger for use in photography

1985-11-04

1987-11-03

Hix, L. T.

Photocopying

Projection printing and copying cameras

Multicolor picture

355 68, G03B 2780

Patent

active

047040254

ABSTRACT:
An enlarger for copying a film is provided having two modes of operation. A first mode of operation permits preliminary adjustment of the focus of the lens system while the second mode of operation permits an actual exposure, the first mode of operation being inhibited during the actual exposure of the film in the second mode.

REFERENCES:
patent: 3340764 (1967-09-01), Bergson
patent: 3397612 (1968-08-01), Ludloff
patent: 3640620 (1972-02-01), Shatz et al.
patent: 4175853 (1979-11-01), Harvey
patent: 4235551 (1980-11-01), Harvey
patent: 4246514 (1981-01-01), Metzger
patent: 4255046 (1981-03-01), Corona
patent: 4371259 (1983-02-01), Howitt
patent: 4576470 (1986-03-01), Yuasa et al.

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