Color negatives adapted for visual inspection

Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...

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Details

430505, 430506, 430359, G03C 730, G03C 7333

Patent

active

059725850

ABSTRACT:
A color negative photographic element is disclosed containing yellow, magenta and cyan dye-forming couplers and masking dyes. Visual judging of the negative image obtained following processing is facilitated by choosing the masking dyes to provide, following imagewise exposure and processing, in CIE1976(L.sup.* a.sup.* b.sup.*) color space L.sup.* values of greater than 30 and C.sup.* values of less than 20, where C.sup.* values are derived from the formula: C.sup.* =[(a.sup.*).sup.2 +(b.sup.*).sup.2 ].sup.1/2.

REFERENCES:
patent: 2449966 (1948-09-01), Hansen
patent: 4992357 (1991-02-01), Haga et al.
patent: 5364753 (1994-11-01), Yamazaki et al.
patent: 5399468 (1995-03-01), Sawyer et al.
patent: 5447831 (1995-09-01), Singer et al.
Science and Technology of Photography. Karlheinz Keller, pp. 114-115, 1993.
Stroebel, et al "Photographic Materials and Processes", Focal Press, Boston/London 1986, Sect. 16.8 Color-Negative Masking, pp. 525-528.

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