Radiation imagery chemistry: process – composition – or product th – Color imaging process – Using identified radiation sensitive composition in the...
Patent
1995-11-17
1997-10-07
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Color imaging process
Using identified radiation sensitive composition in the...
430359, 430503, 430504, 430505, 430506, G03C 722, G03C 7407
Patent
active
056746652
ABSTRACT:
A color negative photographic film wherein on the curve of density versus log E for each color sensitive record: (1) a straight line, which connects the point at density Dmin+0.1 and the point at 1.5log E above the exposure required for density Dmin+0.2, has a mathematical slope .ltoreq. 0.50; and (2) the difference in log E is .gtoreq.1.7 between the point 0.9log E above the exposure required for density Dmin+0.2 and the point where the density difference is 0.1 between the curve and the straight line which results from a linear regression of the three density points at exposures 0.3log E, 0.9log E, and 1.5log E above the exposure required for the density Dmin+0.2; and (3) the difference in log E is .gtoreq.1.20 between the exposure needed for density Dmin+0.1 and the point that corresponds to the exposure, in lux-seconds, of 9.2/(Film Speed). The exposure of the foregoing gray card is a typical normal exposure based on the film speed rating (i.e. the film is not overexposed or underexposed).
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The Negative by Ansel Adams, New York Graphic Society, Boston, MA USA (1981), Chapter 4, "The Zone System", pp. 47-98.
*SMPTE Journal, vol. 91, No. 10, Oct. 1982, Scarsdale New York, pp. 922-930 "Eastman Color High-Speed Negative Film 5293", by Glenn L. Kennel, Richard C. Sehlin, F. R. Reinking, S. W. Spakowsky, and G. L. Whittier.
Brewer John Charles
Keech John Tyler
Kelly Elizabeth Laura
Keyes Michael Paul
Sawyer John Frank
Anderson Andrew J.
Eastman Kodak Company
Schilling Richard L.
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