Photographic color printer

Abstract

Abstract A METHOD AND APPARATUS OF MASKING COLOR RECORDS WITH AN EXPOSURE PATTERN THAT HAS BEEN ELECTRONICALLY CORRECTED FOR PRODUCING COLOR PRINTS FROM PHOTOGRAPHIC COLOR RECORDS. THREE FLYING SPOT SCANNING DEVICES HAVING BLUE, GREEN OR RED FILTERS, RESPECTIVELY, POSITIONED IN FRONT OF THE FACE OF EACH OF THE DEVICES SYNCHRONOUSLY SCAN A PHOTOGRAPHIC COLOR RECORD. THE FILTERED LIGHT OF THE FLYING SPOT SCANNING DEVICES IS MODULATED BY THE COLOR CONTENT OF THE PHOTOGRAPHIC COLOR RECORD. A PORTION OF THE MODULATED LIGHT TRANSMITTED BY THE COLOR RECORD IS DIRECTED TO THREE PHOTOELECTRIC SENSING DEVICES EACH ARRANGED TO SENSE A DIFFERENT COLOR OF THE TRANSMITTED LIGHT TO PROVIDE RESPECTIVE SIGNALS REPRESENTATIVE OF THE INTENSITY OF EACH COLOR. THE RESPECTIVE SIGNALS ARE STORED DURING ONE SCANSION OF THE COLOR RECORD BY THE FLYING SPORT SCANNING DEVICES AND THEREAFTER APPLIED TO A CORRECTION SYSTEM WHEREIN THE BLUE,K GREEN AND RED COLOR COMPONENTS ARE INDIVIDUALLY CORRECTED TO COMPENSATE FOR VARIOUS CONDIDTIONS IN THE PHOTOGRAPHIC COLOR RECORD AND THE COPY MATERIAL. THE CORRECTED SIGNALS ARE THEN FED BACK TO CONTROL THE INTENSITY OF THE FLYING SPOT SCANNING DEVICES DURING A SECOND SCANSION OF THE PHOTOGRAPHIC RECORD AT WHICH TIME THE COLOR PRINT IS MADE.

Inventors

• 👤 Georges July

Bibliographic Details