Simulator for automatic photographic printers

Details Simulator for automatic photographic printers Simulator for automatic photographic printers

1988-06-15

1989-09-12

Hix, L. T.

Photocopying

Projection printing and copying cameras

Multicolor picture

355 68, G03B 2772

Patent

active

048664758

ABSTRACT:
A simulator for automatic color photographic printers which are adapted to print an image recorded on a film on a sheet of printing paper as a final print. Said image is picked up by an image sensor and displayed on a CRT as an image that is identical with the final print. The simulator includes a gamma correction circuit which processes the output signals from the image sensor without transducing them logarithmically, performing gamma correction such that the total gamma of said CRT and the output signals of said gamma correction circuit is made equal substantially equal to the gamma of the printing paper, whereby the image simulated can be displayed on the CRT with a high accuracy without deterioration of the image signals detected by the image sensor.

REFERENCES:
patent: 4393398 (1983-07-01), Horiguchi et al.
patent: 4736244 (1988-04-01), Shiota et al.
patent: 4736245 (1988-04-01), Seto et al.
patent: 4812874 (1989-03-01), Suzuki

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