Timing layers and auxiliary neutralizing layer for color...

Details Timing layers and auxiliary neutralizing layer for color... Timing layers and auxiliary neutralizing layer for color...

G - Physics

03

C

96/185, 96/26

G03C 8/54 (2006.01) G03C 8/52 (2006.01)

Patent

CA 1172493

ABSTRACT OF THE DISCLOSURE Photographic assemblages, elements, receiv- ing elements and cover sheets comprise a combination of two timing layers and two neutralizing layers for use with negative-working silver halide emulsions and positive-working redox dye-releasers. The outermost timing layer has a negative temperature coefficient? while the innermost timing layer has higher a posi- tive or negative temperature coefficient and has a penetration time by alkaline processing composition that is greater than the penetration time of the outermost timing layer. An auxiliary neutralizing layer is located between the two timing layers. Dye release is restricted more at low temperatures than at high temperatures so that the temperature latitude of the system is thereby increased.

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