Eastman-kodak Company

John H Becher

Roger A Bryant

A color negative photographic element is disclosed that is constructed with the following layer unit coating sequence, starting with the support: slower red, slower green, slower blue, faster red, faster green and faster blue. A surprising enhancement in speed is realized when color development is undertaken in a time (S) ranging from 15 to 110 seconds and a development temperature (T) ranging from 40 to 65.degree. C., development time and temperature being chosen to satisfy the relationship:

Color development process that results in high observed speeds

A color negative photographic element is disclosed that is constructed for development in less than 2 minutes. Increased red and green speeds are realized by employing the following layer unit coating sequence, starting with the support: slower red, slower green, slower blue, faster red, faster green and faster blue. Total hydrophilic colloid in the layer units, interlayers and protective layer unit is limited to less than 15 g/m.sup.2 to facilitate more rapid development.

Rapid access color photographic element exhibiting increased red and

Increased speed of the red record is realized when a color negative film is developed in 2 minutes or less and contains a fast and slow pair of red recording emulsion layers, the fast layer containing at a concentration of at least 0.1 mole per silver mole a colorless cyan dye-forming 2-(alkoxyarylcarbamoyl)-1-naphthol coupler.

Process of producing color negative image at shortened development times

A color negative photographic element is disclosed that a pair of fast green and red recording layer units coated to receive exposing radiation prior to at least one pair of slow green and red recording layer units. The green recording layer units together contain at least 1.0 g/m.sup.2 of silver with at least 60 percent of the silver in the green recording layer units being in a location other than the fast green recording layer unit, and the red recording layer units together contain at least 1.8 g/m.sup.2 of silver with at least 70 percent of the silver in the red recording layer units being in a location other than the fast red recording layer unit. When development times are reduced to 2 minutes or less during processing increased red speed, reduced granularity of the green record, and increased sharpness of the red record are observed.

Color photographic element with enhanced properties at reduced

When a color negative film is developed in 2 minutes or less at a temperature of less than 40.degree. C. and contains in overlying blue and green recording layer units high bromide silver halide grains containing from 1 to 10 mole percent iodide, based on silver, and in an underlying red recording layer unit high bromide silver halide grains containing less than 0.05 mole percent iodide, based on silver, and at least 1.times.10.sup.-6 mole per silver mole of a hexacoordination complex of a Group 8 metal and coordination ligands, at least four of the ligands being anionic and at least one of the ligands being more electronegative than halide ligands, loss of lower scale contrast in the red record attributable to the faster time of development is avoided.

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Webster, NY, United States of America

John H Becher