Heat-stabilized IR-sensitive thermally developable imaging materials
AssigneeEastman Kodak Company
InventorsSteven H. Kong, Bryan V. Hunt, William D. Ramsden
Life of this patent
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Abstract
A black-and-white photothermographic material that is sensitive at a wavelength greater than 700 nm, and comprises a support having thereon one or more thermally-developable imaging layers comprising a binder and in reactive association, a photosensitive silver halide, a non-photosensitive source of reducible silver ions, and a reducing composition for the non-photosensitive source reducible silver ions. The thermally-developable layers further comprises one or more indolenine dyes as post-processing stabilizing compounds and one or more merocyanine dyes or cyanine spectral sensitizing dyes that comprise one or more thioalkyl, thioaryl, or thioether groups.
Claims32
A black-and-white photothermographic material comprising a support having on one side thereof:
- a) a thermally-developable imaging layer(s) comprising a hydrophobic binder and in reactive association, a photosensitive silver halide, one or more non-photosensitive silver carboxylates, a hindered phenol reducing agent, an indolenine dye that is one of the following compounds III-1 to III-27 wherein W− is an anion, and a benzothiazole dye that is one of the following compounds II-1 to II-11 wherein X− is an anion,
- b) a hydrophobic protective layer that is farther from said support than said imaging layer(s),
- said photothermographic material also comprising an antihalation layer on the backside of said support, said antihalation layer comprising a binder and an antihalation dye,
A black-and-white photothermographic material comprising a support having on one side thereof:
- a) a thermally-developable, high contrast imaging layer(s) comprising a hydrophobic binder and in reactive association, a photosensitive silver halide, one or more non-photosensitive silver carboxylates, a hindered phenol reducing agent, an indolenine dye that is one of the following compounds III-1 to III-27 wherein w− is an anion, and a merocyanine dye that is one of the following compounds I-1 to I-13 wherein X− is an anion
- b) a hydrophobic protective layer that is farther from said support than said imaging layer(s),
- said photothermographic material also comprising an antihalation layer on the backside of said support, said antihalation layer comprising a binder and an antihalation dye,
A black-and-white photothermographic material that is sensitive at a wavelength greater than 700 nm, and comprises a support having thereon one or more thermally-developable imaging layers comprising a binder and in reactive association, a photosensitive silver halide, a non-photosensitive source of reducible silver ions, a reducing composition for said non-photosensitive source of reducible silver ions, and a spectral sensitizing dye for said photosensitive silver halide that is a merocyanine dye, or a cyanine dye that comprises one or more thioalkyl, thioaryl, or thioether groups,
- wherein said one or more thermally-developable layers further comprises one or more indolenine dyes as post-processing stabilizing compounds and a substituted propenenitrile compound.
A black-and-white photothermographic material that is sensitive at a wavelength greater than 700 nm, and comprises a support having thereon one or more thermally-developable imaging layers comprising a binder and in reactive association, a photosensitive silver halide, a non-photosensitive source of reducible silver ions, a reducing composition for said non-photosensitive source of reducible silver ions, and a spectral sensitizing dye for said photosensitive silver halide that is a merocyanine dye, or a cyanine dye that comprises one or more thioalkyl, thioaryl, or thioether groups,
- wherein said one or more thermally-developable layers further comprises one or more indolenine dyes as post-processing stabilizing compounds that are represented by the following Structure III:
- wherein R1′, R2, R3, R4′, R5, and R6 are independently alkyl or aryl groups, Z1′ and Z2′ independently represent 4 or 8 carbon atoms necessary to provide a benzo- or naphtho-condensed ring, L1′, L2′, L3′, L4′, L5′, L6′, and L7′ independently represent substituted or unsubstituted methine groups, m is 0, 1 or 2, W is a charge neutralizing counterion, and k2 is an integer inclusive of 0 and represents sufficient counterions to provide a net charge of zero,
- provided that when W is an anion, it is an alkylsulfonate, aryldisulfonate, alkylsulfonyl methide or amide, sulfate, thiocyanate, picrate, acetate, hexafluoroantimonate, or trifluoromethanesulfonate ion.
A black-and-white photothermographic material that is sensitive at a wavelength greater than 700 nm, and comprises a support having thereon one or more thermally-developable imaging layers comprising a binder and in reactive association, a photosensitive silver halide, a non-photosensitive source of reducible silver ions, a reducing composition for said non-photosensitive source of reducible silver ions, and a spectral sensitizing dye for said photosensitive silver halide that is a merocyanine dye, or a cyanine dye that comprises one or more thioalkyl, thioaryl, or thioether groups,
- wherein said one or more thermally-developable layers further comprises one or more indolenine dyes as post-processing stabilizing compounds and one or more toners that have been incorporated within said one or more thermally-developable imaging layers prior to coating,
- said toner being a phthalazine, phthalazine derivative, phthalazinone, or phthalazinone derivative, or a metal salt of a phthalazinone derivative.
A black-and-white photothermographic material that is sensitive at a wavelength greater than 700 nm, and comprises a support having thereon one or more thermally-developable imaging layers comprising a binder and in reactive association, a photosensitive silver halide, a non-photosensitive source of reducible silver ions, a reducing composition for said non-photosensitive source of reducible silver ions, and a spectral sensitizing dye for said photosensitive silver halide that is a merocyanine dye, or a cyanine dye that comprises one or more thioalkyl, thioaryl, or thioether groups,
- wherein said one or more thermally-developable layers further comprises one or more indolenine dyes as post-processing stabilizing compounds,
- said photosensitive silver halide having been chemically sensitized with a tetrasubstituted thiourea compound or with the combination of a gold(III)-containing compound and a sulfur-containing compound and/or a tellurium-containing compound.
A black-and-white photothermographic material that is sensitive at a wavelength greater than 700 nm, and comprises a support having thereon one or more thermally-developable imaging layers comprising a binder and in reactive association, a photosensitive silver halide, a non-photosensitive source of reducible silver ions, a reducing composition for said non-photosensitive source of reducible silver ions, and a spectral sensitizing dye for said photosensitive silver halide that is a merocyanine dye, or a cyanine dye that comprises one or more thioalkyl, thioaryl, or thioether groups,
- wherein said one or more thermally-developable layers further comprises one or more indolenine dyes as post-processing stabilizing compounds,
- said photothermographic material further comprising an antihalation layer on the backside of said support that comprises a heat-bleachable antihalation composition.
A black-and-white photothermographic material that is sensitive at a wavelength greater than 700 nm, and comprises a support having thereon one or more thermally-developable imaging layers comprising a binder and in reactive association, a photosensitive silver halide, a non-photosensitive source of reducible silver ions, a reducing composition for said non-photosensitive source of reducible silver ions, and a spectral sensitizing dye for said photosensitive silver halide that is a merocyanine dye, or a cyanine dye that comprises one or more thioalkyl, thioaryl, or thioether groups,
- wherein said one or more thermally-developable layers further comprises one or more indolenine dyes as post-processing stabilizing compounds,
- said photothermographic material further comprising a high contrast co-developing compound that is a hydroxylamine, alkanolamine, ammonium phthalamate compound, hydroxamic acid compound, or hydrogen donor compound.
Dependencies are inferred from the claim text.