Photothermographic element, composition and process

Claim 2

A photothermographic element comprising a support having thereon at least one layer comprising photosensitive silver halide and a stabilizer precursor combination of (a) a blocked thione stabilizer precursor with (b) a halogen containing stabilizer precursor.

Claim 3

A photoThermographic element as in claim 1 comprising a support having thereon at least one layer comprising photosensitive silver halide and a combination of (a) a blocked thione stabilizer precursor which is a compound represented by the formula:

Claim 4

A photothermographic element as in claim 1 wherein said blocked thione stabilizer precursor is 1-cyclohexylcarbamoyl-4-phenyl-2-tetrazoline-5-thione.

Claim 5

A photothermographic element as in claim 1 wherein said halogen containing stabilizer precursor is a compound selected from the group consisting of a. tetrabromobutane, b. Alpha -bromo-gamma-nitro- Beta -phenylbutyrophenone, c. 2-bromo-2-p-tolylsulfonylacetamide, d. 2-tribromomethylsulfonylbenzothiazole, e. 2,2-dibromo-2-phenylsulfonylacetamide, f. 1,3-dibenzoyloxy-2-bromo-2-nitropropane, g. 2-bromo-2-nitro-1,3-di-(4-nitrobenzoyloxy)propane, h. 2-bromo-1,3-di-(4-methoxybenzoyloxy)-2-nitropropane, and combinations thereof.

Claim 6

A photothermographic element as in claim 1 wherein said stabilizer precursor combination comprises (a) about 0.005 to about 0.035 mole of said blocked thione stabilizer per mole of total silver with (b) about 0.001 to about 1.0 mole of said halogen containing stabilizer precursor per mole of total silver.

Claim 7

In a photothermographic element comprising a support having thereon a layer comprising (A) photosensitive silver halide in association with (B) an oxidation-reduction imageforming combination comprising (i) a heavy metal salt oxidizing agent with (ii) an organic reducing agent, (C) a polymeric binder for said layer, and (D) a stabilizer precursor, the improvement wherein said stabilizer precursor comprises a stabilizer precursor combination of (a) a blocked thione stabilizer precursor with (b) a halogen containing stabilizer precursor.

Claim 8

In a photothermographic element comprising a support having thereon a layer comprising (A) photosensitive silver halide in association with (B) an oxidation-reduction imageforming combination comprising (i) a heavy metal salt oxidizing agent with (ii) an organic reducing agent, (C) a polymeric binder for said layer, and (D) a stabilizer precursor, the improvement wherein said stabilizer precursor comprises a stabilizer precursor combination of (a) a blocked thione stabilizer precursor with (b) a halogen containing stabilizer precursor.

Claim 9

A photothermographic element as in claim 6 wherein said stabilizer precursor comprises a stabilizer precursor combination of (a) about 0.005 to about 0.035 mole of a blocked thione stabilizer precursor per mole of total silver with (b) about 0.001 to about 1.0 mole of a halogen containing stabilizer precursor per mole of total silver in said elemEnt.

Claim 10

A photothermographic element as in claim 6 comprising a support having thereon a layer comprising (A) photosensitive silver halide in association with (B) an oxidation-reduction image-forming combination comprising (i) silver behenate with (ii) a sulfonamidophenol reducing agent, (C) a poly(vinyl butyral) binder for said layer, (D) a stabilizer precursor combination comprising (I) 1-cyclohexylcarbamoyl-4-phenyl-2-tetrazoline-5-thione with (II) 2-bromo-2-p-tolylsulfonylacetamide, (E) a spectral sensitizing dye, and (F) a toner comprising succinimide, N-hydroxy-1,8-naphthalimide or phthalazinone.

Claim 11

In a photothermographic element comprising a support having thereon a layer comprising (A) photosensitive silver halide, (B) a silver halide developing agent, (C) a development activator precursor, (D) a polymeric binder for said layer and (E) a stabilizer precursor, the improvement wherein said stabilizer precursor comprises a combination of (a) a blocked thione stabilizer precursor with (b) a halogen containing stabilizer precursor.

Claim 12

In a photothermographic element comprising a support having thereon a layer comprising (A) photosensitive silver halide, (B) a silver halide developing agent, (C) a development activator precursor, (D) a polymeric binder for said layer and (E) a stabilizer precursor, the improvement wherein said stabilizer precursor comprises a combination of (a) a blocked thione stabilizer precursor with (b) a halogen containing stabilizer precursor.

Claim 13

A photographic composition comprising photosensitive silver halide, a polymeric binder for said composition and a stabilizer precursor combination comprising (a) a blocked thione stabilizer precursor with (b) a halogen containing stabilizer precursor.

Claim 14

A photographic composition comprising photosensitive silver halide, a polymeric binder for said composition and a stabilizer precursor combination comprising (a) a blocked thione stabilizer precursor with (b) a halogen containing stabilizer precursor.

Claim 15

A photographic composition as in claim 10 also comprising a silver halide developing agent.

Claim 16

A photographic composition as in claim 10 wherein said stabilizer precursor combination comprises (a) a blocked thione stabilizer precursor represented by the formula:

Claim 17

A photographic composition as in claim 10 wherein said blocked thione stabilizer precursor is 1-cyclohexylcarbamoyl-4-phenyl-2-tetrazoline-5-thione.

Claim 18

A photographic composition as in claim 10 wherein said halogen containing stabilizer precursor is a compound selected from the group consisting of a. tetrabromobutane, b. Alpha -bromo-gamma-nitro- Beta -phenylbutyrophenone, c. 2-bromo-2-p-tolylsulfonylacetamide, d. 2-tribromomethylsulfonylbenzothiazole, e. 2,2-dibromo-2-phenylsulfonylacetamide, f. 1,3-dibenzoyloxy-2-bromo-2-nitropropane, g. 2-bromo-2-nitro-1,3-di-(4-nitrobenzoyloxy)propane, h. 2-bromo-1,3-di-(4-methoxybenzoyloxy)-2-nitropropane, and combinations thereof.

Claim 19

In a photothermographic composition comprising (A) photosensitive comprising halide in association with (B) an oxidation-reduction image-forming combination omprising (i) a heavy metal salt oxidizing agent with (ii) an organic reducing agent, (C) a polymeric binder for said layer, and (D) a stabilizer precursor, the improvement wherein said stabilizer precursor comprises a stabilizer precursor combination of (a) a blocked thione stabilizer precursor with (b) a halogen containing stabilizer precursor.

Claim 20

In a photothermographic composition comprising (A) photosensitive comprising halide in association with (B) an oxidation-reduction image-forming combination omprising (i) a heavy metal salt oxidizing agent with (ii) an organic reducing agent, (C) a polymeric binder for said layer, and (D) a stabilizer precursor, the improvement wherein said stabilizer precursor comprises a stabilizer precursor combination of (a) a blocked thione stabilizer precursor with (b) a halogen containing stabilizer precursor.

Claim 21

A photographic composition as in claim 15 wherein said stabilizer precursor combination comprises (a) about 0.005 to about 0.035 mole of said blocked thione stabilizer precursor per mole of total silver with (b) about 0.001 to about 1.0 mole of said halogen containing stabilizer precursor per mole of total silver in said composition.

Claim 22

A photothermographic composition comprising (A) photosensitive silver halide in association with (B) an oxidation-reduction image-forming combination comprising (i) a silver salt of a long-chain fatty acid with (ii) an organic reducing agent, (C) a polymeric binder for said composition, and (D) a stabilizer precursor, the improvement wherein said stabilizer precursor comprises a stabilizer precursor combination of (a) about 0.005 to about 0.035 mole of blocked thione stabilizer precursor per mole of total silver with (b) about 0.001 to about 1.0 mole of a halogen containing stabilizer precursor per mole of total silver in said composition.

Claim 23

A photothermographic composition comprising (A) photosensitive silver halide in association with (B) an oxidation-reduction image-forming combination comprising (i) a silver salt of a long-chain fatty acid with (ii) an organic reducing agent, (C) a polymeric binder for said composition, and (D) a stabilizer precursor, the improvement wherein said stabilizer precursor comprises a stabilizer precursor combination of (a) about 0.005 to about 0.035 mole of blocked thione stabilizer precursor per mole of total silver with (b) about 0.001 to about 1.0 mole of a halogen containing stabilizer precursor per mole of total silver in said composition.

Claim 24

A photothermographic composition as in claim 17 comprising (A) photosensitive silver halide in association with (B) an oxidation-reduction image-forming combination comprising (i) silver behenate with (ii) a sulfonamidophenol reducing agent, (C) a poly(vinyl butyral) binder for said composition, (D) a stabilizer precursor combination comprising (I) 1-cyclohexylcarbamoyl-4-phenyl-2-tetrazoline-5-thione with (II) 2-bromo-2-p-tolylsulfonylacetamide, (E) a spectral sensitizing dye, and (F) a toner comprising succinimide, N-hydroxy-1,8-naphthalimide or phthalazinone.

Claim 25

A photothermographic composition comprising (a) photosensitive silver halide in association with (b) a silver halide developing agent, (c) a development activator precursor, (d) a polymeric binder for said composition and (e) a stabilizer precursor for said silver halide, the improvement wherein said stabilizer precursor comprises a combination of (i) a blocked thione stabilizer precursor with (ii) a halogen containing stabilizer precursor.

Claim 26

A photothermographic composition comprising (a) photosensitive silver halide in association with (b) a silver halide developing agent, (c) a development activator precursor, (d) a polymeric binder for said composition and (e) a stabilizer precursor for said silver halide, the improvement wherein said stabilizer precursor comprises a combination of (i) a blocked thione stabilizer precursor with (ii) a halogen containing stabilizer precursor.

Claim 27

A process of stabilizing an image in a photothermographic element comprising a support having thereon at least one layer comprising a photosensitive silver halide and a stabilizer precursor combination of (a) a blocked thione stabilizer precursor with (b) a halogen containing stabilizer precursor for said silver salt, comprising heating said element to about 80* to about 250*C.

Claim 28

A process of stabilizing an image in a photothermographic element comprising a support having thereon at least one layer comprising a photosensitive silver halide and a stabilizer precursor combination of (a) a blocked thione stabilizer precursor with (b) a halogen containing stabilizer precursor for said silver salt, comprising heating said element to about 80* to about 250*C.

Claim 29

A process as in claim 20 wherein said element is heated at about 80* to about 250*C. for about 0.5 to about 60 seconds.

Claim 30

A PROCESS DEVELOPING AND STABILIZING AN IMAGE IN A PHOTOTHERMOGRAPHIC ELEMENT COMPRISING (A) PHOTOSENSITIVE SILVER HALIDE IN ASSOCIATION WITH (B) AN OXIDATION-REDUCTION IMAGE-FORMING COMBINATION COMPRISING (I) A SILVER SALT OF A LONG-CHAIN FATTY ACID WITH (II) AN ORGANIC REDUCING AGENT, (C) A POLYMERIC BINDER FOR SAID LAYER, AND (d) A STABILIZER PRECURSOR COMPRISING A COMBINATION OF (A) A BLOCKED THIONE STABILIZER PRECURSOR WITH (B) A HALOGEN CONTAINING STABILIZER PRECURSOR, COMPRISING HEATING SAID ELEMENT TO ABOUT 80* TO ABOUT 250*C.

Claim 31

A PROCESS DEVELOPING AND STABILIZING AN IMAGE IN A PHOTOTHERMOGRAPHIC ELEMENT COMPRISING (A) PHOTOSENSITIVE SILVER HALIDE IN ASSOCIATION WITH (B) AN OXIDATION-REDUCTION IMAGE-FORMING COMBINATION COMPRISING (I) A SILVER SALT OF A LONG-CHAIN FATTY ACID WITH (II) AN ORGANIC REDUCING AGENT, (C) A POLYMERIC BINDER FOR SAID LAYER, AND (d) A STABILIZER PRECURSOR COMPRISING A COMBINATION OF (A) A BLOCKED THIONE STABILIZER PRECURSOR WITH (B) A HALOGEN CONTAINING STABILIZER PRECURSOR, COMPRISING HEATING SAID ELEMENT TO ABOUT 80* TO ABOUT 250*C.

Claim 32

A process of developing and stabilizing an image in a photothermographic element cOmprising a support having thereon a layer comprising (A) photosensitive silver halide in association with (B) an oxidation-reduction image-forming combination comprising (i) silver behenate with (ii) a sulfonamidophenol reducing agent, (C) a poly(vinyl butyral) binder for said layer, (D) a stabilizer precursor combination comprising (I) 1-cyclohexylcarbamoyl-4-phenyl-2-tetrazoline-5-thione with (II) 2-bromo-2-p-tolysulfonylacetamide, (E) a spectral sensitizing dye and (F) a toner comprising succinimide, N-hydroxy-1,8-naphthalimide or phthalazinone; comprising heating said element to about 120* to about 160*C. for about 0.5 to about 30 seconds.

Claim 33

A process of developing and stabilizing an image in a photothermographic element cOmprising a support having thereon a layer comprising (A) photosensitive silver halide in association with (B) an oxidation-reduction image-forming combination comprising (i) silver behenate with (ii) a sulfonamidophenol reducing agent, (C) a poly(vinyl butyral) binder for said layer, (D) a stabilizer precursor combination comprising (I) 1-cyclohexylcarbamoyl-4-phenyl-2-tetrazoline-5-thione with (II) 2-bromo-2-p-tolysulfonylacetamide, (E) a spectral sensitizing dye and (F) a toner comprising succinimide, N-hydroxy-1,8-naphthalimide or phthalazinone; comprising heating said element to about 120* to about 160*C. for about 0.5 to about 30 seconds.

Claim 34

A photographic silver halide image stabilizer precursor composition comprising (a) a polymeric binder for said composition with (b) a blocked thione, silver halide image stabilizer precursor and (c) a halogen containing stabilizer precursor.

Claim 35

A photographic silver halide image stabilizer precursor composition comprising (a) a polymeric binder for said composition with (b) a blocked thione, silver halide image stabilizer precursor and (c) a halogen containing stabilizer precursor.

Claim 36

A photographic silver halide image stabilizer precursor composition comprising (a) a poly(vinyl butyral) binder for said composition with (b) 1-cyclohexylcarbamoyl-4-phenyl-2-tetrazoline-5-thione, and (c) a halogen containing stabilizer precursor which is a compound selected from the group consisting of i. tetrabromobutane, ii. Alpha -bromo-gamma-nitro- Beta -phenylbutyrophenone, iii. 2-bromo-2-p-tolylsulfonylacetamide, iv. 2-tribromomethylsulfonylbenzothiazole, v. 2,2-dibromo-2-phenylsulfonylacetamide, vi. 2-bromo-2-nitro-1,3-propanediol, vii. 1,3-dibenzoyloxy-2-bromo-2-nitropropane, viii. 2-bromo-2-nitro-1,3-di-(4-nitrobenzoyloxy)propane, ix. 2-bromo-1,3-di-(4-methoxybenzoyloxy)-2-nitropropane, and combinations thereof.

Claim 37

A photographic silver halide image stabilizer precursor composition comprising (a) a poly(vinyl butyral) binder for said composition with (b) 1-cyclohexylcarbamoyl-4-phenyl-2-tetrazoline-5-thione, and (c) a halogen containing stabilizer precursor which is a compound selected from the group consisting of i. tetrabromobutane, ii. Alpha -bromo-gamma-nitro- Beta -phenylbutyrophenone, iii. 2-bromo-2-p-tolylsulfonylacetamide, iv. 2-tribromomethylsulfonylbenzothiazole, v. 2,2-dibromo-2-phenylsulfonylacetamide, vi. 2-bromo-2-nitro-1,3-propanediol, vii. 1,3-dibenzoyloxy-2-bromo-2-nitropropane, viii. 2-bromo-2-nitro-1,3-di-(4-nitrobenzoyloxy)propane, ix. 2-bromo-1,3-di-(4-methoxybenzoyloxy)-2-nitropropane, and combinations thereof.