G - Physics – 03 – B
Patent
G - Physics
03
B
178/3, 314/43.6
G03B 27/72 (2006.01)
Patent
CA 1177411
ABSTRACT Automatic control of exposure level and contrast correction for a photographic printer is disclosed. The printer uses dynamic masking achieved by modulating the intensity and velocity of a CRT scanning spot. A prescan is employed to evaluate the negative and establish exposure level and contrast grade excursion limits for the subsequent exposure. Different control systems are disclosed for contact printing and projection printing.
392563
Johnson & Hicks
Logetronics Inc.
LandOfFree
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