Patricia Berdean Graham

US Patent:

43906060, Jun 28, 1983

Filed:

Jul 1, 1982

Appl. No.:

6/394349

Inventors:

Rolf S. Gabrielsen - Webster NY
Patricia A. Graham - Williamson NY
James E. Klijanowicz - Pittsford NY
Max H. Stern - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 700
G03C 140

US Classification:

430 9

Abstract:

A color-forming para-sulfonamidodiphenylamine dye precursor in a photographic material and process enables formation of a sulfonimide dye image by means of cross-oxidation without the need for a coupling reaction. The color-forming para-sulfonamidodiphenylamine dye precursor is useful in a photographic silver halide material for producing (i) a dye image, or (ii) a dye image and silver image. The exposed photographic material is processed to produce (a) a positive dye image, (b) a negative dye and negative silver image, (c) a negative dye image or (d) a positive dye image and a positive silver image.

US Patent:

44993048, Feb 12, 1985

Filed:

Jun 8, 1982

Appl. No.:

6/386457

Inventors:

Rolf S. Gabrielsen - Webster NY
Patricia A. Graham - Williamson NY
James E. Klijanowicz - Pittsford NY
Max H. Stern - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

C07C14379
C09B 4904

US Classification:

564 92

Abstract:

Color-forming para-sulfonamidodiphenylamines and their corresponding sulfonimide dyes are useful in imaging materials. The color-forming sulfonamidodiphenylamines are prepared by condensation reactions. The corresponding sulfonimide dyes are formed by oxidation of the color-forming sulfonamidodiphenylamines by means of a suitable oxidizing agent, such as the oxidized form of a cross-oxidizing silver halide developing agent.

US Patent:

41232747, Oct 31, 1978

Filed:

Mar 16, 1977

Appl. No.:

5/778183

Inventors:

Phillip D. Knight - Fairport NY
Richard A. DEMauriac - Webster NY
Patricia A. Graham - Fairport NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 530
G03C 102
G03C 176
G03C 300

US Classification:

96 66T

Abstract:

A photothermographic material comprising in reactive association (a) photosensitive silver halide, (b) an image-forming combination comprising (i) a silver salt of certain 1,2,4-mercaptotriazole derivatives with (ii) a silver halide developing agent, and (c) a polymeric binder, provides developed images without the need for processing solutions or baths. An image can be developed in this material by merely heating the material to moderately elevated temperatures. The silver salts of certain 3-amino-1,2,4-mercaptotriazole derivatives are particularly preferred compounds. Other addenda employed in heat developable photothermographic materials, such as sensitizing dyes, can be employed with the photothermographic materials described.

US Patent:

43806660, Apr 19, 1983

Filed:

Jul 6, 1981

Appl. No.:

6/280628

Inventors:

Rolf S. Gabrielsen - Webster NY
Patricia A. Graham - Williamson NY
James E. Klijanowicz - Pittsford NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

C07C14375

US Classification:

564 82

Abstract:

A color-forming para sulfonamidodiphenylamine dye precursor has one or two sulfonamido groups in positions ortho to the amine --NH-- moiety separating the two phenyl rings of the para sulfonamidodiphenylamine and, in oxidized form, intramolecularly reacts to produce a sulfonamido-substituted phenazine dye. Such color-forming para sulfonamidodiphenylamine dye precursors are useful to produce a dye image by cross-oxidation in an imaging material.

US Patent:

45074798, Mar 26, 1985

Filed:

Sep 29, 1982

Appl. No.:

6/426576

Inventors:

Rolf S. Gabrielsen - Webster NY
Patricia A. Graham - Williamson NY
James E. Klijanowicz - Pittsford NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

C07D24146

US Classification:

544348

Abstract:

A color-forming sulfonamidodiphenylamine dye precursor has sulfonamido groups in the ortho position and para position in relation to the --NH-- moiety of the sulfonamidodiphenylamine and, in oxidized form, intramolecularly reacts to produce a sulfonamido-substituted phenazine dye. Such color-forming sulfonamidodiphenylamine dye precursors are useful to produce a dye image by cross-oxidation in an imaging material.

US Patent:

41285573, Dec 5, 1978

Filed:

Nov 3, 1977

Appl. No.:

5/848254

Inventors:

Phillip D. Knight - Fairport NY
Richard A. DEMauriac - Webster NY
Patricia A. Graham - Fairport NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

C07F 110
G03C 102

US Classification:

260299

Abstract:

A photothermographic material comprising in reactive association (a) photosensitive silver halide, (b) an image-forming combination comprising (i) a silver salt of certain 1,2,4-mercaptotriazole derivatives with (ii) a silver halide developing agent, and (c) a polymeric binder, provides developed images without the need for processing solutions or baths. An image can be developed in this material by merely heating the material to moderately elevated temperatures. The silver salts of certain 3-amino-1,2,4-mercaptotriazole derivatives are particularly preferred compounds. Other addenda employed in heat developable photothermographic materials, such as sensitizing dyes, can be employed with the photothermographic materials described.

US Patent:

43682464, Jan 11, 1983

Filed:

Jul 6, 1981

Appl. No.:

6/280673

Inventors:

Rolf S. Gabrielsen - Webster NY
Patricia A. Graham - Williamson NY
James E. Klijanowicz - Pittsford NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

430
G03C 700
G03C 140

US Classification:

430 9

Abstract:

In a photographic material for producing a dye image or a dye image and silver image comprising (1) a photographic metal salt, such as photographic silver halide, and (2) a dye precursor, improved images are provided by means of a color-forming para-sulfonamidodiphenylamine dye precursor having one to two sulfonamido groups in positions ortho to the --NH-- moiety separating the two phenyl groups of the sulfonamidodiphenylamine and wherein the sulfonamidodiphenylamine, in oxidized form, intramolecularly reacts to produce a sulfonamido-substituted phenazine dye. An exposed photographic material containing the color-forming sulfonamidodiphenylamine dye precursor is processed to produce a negative phenazine dye-enhanced silver image. Alternatively, the exposed photographic material is processed to produce a positive phenazine dye image.