Filter apparatus use in a photographic printer

Details Filter apparatus use in a photographic printer Filter apparatus use in a photographic printer

1989-10-30

1990-06-12

Hayes, Monroe H.

Photocopying

Projection printing and copying cameras

Multicolor picture

355 68, G03B 2780

Patent

active

049337106

ABSTRACT:
A rotatable disc is provided, for use in a photographic printer, supporting both scanning and large area transmissive filters. The disc is used to selective position a scanning or large area filter between a photographic negative and a single light sensor. The disc thus permits the single light sensor to be used to measure both the scanned and large area transmissive characteristics of the photographic negative.

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