Radiation imagery chemistry: process – composition – or product th – Nonradiation sensitive image processing compositions or... – Developer
Patent
1995-01-17
1997-05-13
Huff, Mark F.
Radiation imagery chemistry: process, composition, or product th
Nonradiation sensitive image processing compositions or...
Developer
430598, 430486, 430214, G03C 134, G03C 143, G03C 7392
Patent
active
056291400
ABSTRACT:
An improved photographic element comprises a support bearing at least one silver halide emulsion layer having associated therewith a hydrazide compound that functions as a scavenger for oxidized developing agent. The hydrazide compound includes an electron-withdrawing and aqueous-solubilizing group on an aromatic ring linked to the carbonyl of the hydrazide group and a ballasting group on an aromatic ring linked to a nitrogen atom of the hydrazide group. Preferably, the hydrazide compound is incorporated in a photographic element which comprises a four-equivalent 5-pyrazolone magenta-dye-forming coupler.
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patent: 5468592 (1995-11-01), Nii et al.
Harder John W.
Nelson John V.
Singer Stephen P.
Eastman Kodak Company
Huff Mark F.
Lorenzo Alfred P.
Tucker J. Lanny
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