Method and apparatus for producing color internegatives with a d

Details Method and apparatus for producing color internegatives with a d Method and apparatus for producing color internegatives with a d

1993-04-06

1994-07-12

Coles, Sr., Edward L.

Facsimile and static presentation processing

Natural color facsimile

358506, 358509, 358527, H04N 146, G03F 310

Patent

active

053293835

ABSTRACT:
An improved method of producing positive photographic prints in hybrid photofinishing system employing a digital image printer to produce an intermediate negative image on a non-photographic medium wherein digital data used to print the negative includes code values simulating an orange mask effect in the negative. The improvement in the method involves a reduction in the orange mask values in the digital data so as to reduce the D-max values required for digitally printing the intermediate negative thereby reducing print cost and throughput time in the process. In a further improvement, the printer code values for pixels corresponding to full white in the final image are forced to values that print as black in the negative thereby eliminating the orange mask effect for these pixels and rendering improved rendition of full white areas in the final image print.

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patent: 5132786 (1992-07-01), Ishiwata
patent: 5132788 (1992-07-01), Hirota

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