Heat developable material and process

Claim 2

A heat developable, photographic element for providing a dye enhanced, silver image comprising a support having thereon: (A) at least one heat developable layer comprising (i) photosensitive silver halide, (ii) at least one active silver halide developing agent, (iii) an activating concentration of a development activator precursor, and (iv) a polymeric binder, and, contiguous to this layer (A), (B) at least one layer comprising an azoaniline dye that upon development of a latent image in said layer (A) by uniformly heating is bleached in the non-image areas of said element.

Claim 3

A heat developable, photographic element for providing a dye enhanced silver image comprising a support having thereon: (A) at least one heat developable, photographic layer comprising (i) photosensitive silver halide, (ii) at least one active silver halide developing agent, (iii) an activating concentration of a development activator precursor, and (iv) a gelatino binder, and, contiguous to this layer (A), (B) at least one layer comprising at least one azoaniline dye selected from the group consisting of ##STR50## and combinations thereof.

Claim 4

A heat developable, photographic element for providing a dye enhanced silver image comprising a support having thereon: (A) at least one heat developable, photographic layer comprising (i) photosensitive silver halide, (ii) at least one active silver halide developing agent, (iii) an activating concentration of a development activator precursor, and (iv) a gelatino binder, and, contiguous to this layer (A), (B) at least one layer comprising at least one azoaniline dye selected from the group consisting of ##STR50## and combinations thereof.

Claim 5

A heat developable, photographic element as in claim 1 wherein said activator precursor is an activator-stabilizer precursor represented by the formula: Q.sub.m A.sub.w ' wherein Q is a protonated basic nitrogen containing moiety selected from the group consisting of ##STR51## wherein Y' is alkylene containing 2 or 3 carbons; X' is SR 7 or NHR 8 , wherein R 7 is aminoalkyl containing 2 to 6 carbon atoms; R 8 is hydrogen, alkyl containing 1 to 20 carbon atoms, phenyl, or aminoalkyl containing 2 to 6 carbon atoms; p is 1 or 2; when p is 1, Z' is ##STR52## when p is 2, Z is a divalent linking group selected from ##STR53## and --SO 2 --; y is 1 to 6; R 6 is alkylene containing 1 to 12 carbon atoms, or phenylene, R 5 and R 4 are individually selected from the group consisting of hydrogen, alkyl; or taken together represent alkylene containing 2 or 3 carbon atoms; and m is 1 to 4 and w is 1 or 2; and wherein A' is an alpha-sulfonylacetate or a 2-carboxycarboxamide.

Claim 6

A heat developable, photographic element as in claim 1 wherein said developing agent consists essentially of a 3-pyrazolidone developing agent.

Claim 7

A heat developable, photographic element as in claim 1 wherein said developing agent comprises a combination of a hydroquinone developing agent with an ascorbic acid developing agent.

Claim 8

A heat developable, photographic element as in claim 1 wherein said activator precursor is also an image stabilizer precursor.

Claim 9

A heat developable, photographic element as in claim 1 wherein said activator precursor consists essentially of a 2-carboxycarboxamide.

Claim 10

A heat developable, photographic element as in claim 1 wherein said activator is a compound selected from the group consisting of bis(2-amino-2-thiazoline) methylene(sulfonylacetate), N-(2-thiazolino)-N'-(imidazolino) propanediamine ethylenebis(sulfonylacetate), 1,3-bis[2S-(N,N'-ethyleneisothiourea)ethyl]urea ethylenebis(sulfonylacetate), and 1,3-bis(2-amino-2-thiazolinyl)propane.N,N'-ethylenebis(phthalamic acid), and combinations thereof.

Claim 11

A heat developable, photographic element for providing a dye enhanced, silver image comprising a support having thereon: (A) at least one heat developable photographic layer comprising (i) photosensitive silver halide, (ii) a 3-pyrazolidone silver halide developing agent, (iii) an activating concentration of an activator precursor consisting essentially of 1,3-bis(2-amino-2-thiazolinyl)propane.N,N'-ethylenebis(phthalamic acid), and (iv) a polymeric binder, and, contiguous to this layer (A), (B) at least one layer comprising an azoaniline dye that upon development of a latent image in said layer (A) by uniformly heating is bleached in the non-image areas of said element.

Claim 12

A heat developable, photographic element for providing a dye enhanced, silver image comprising a support having thereon: (A) at least one heat developable photographic layer comprising (i) photosensitive silver halide, (ii) a 3-pyrazolidone silver halide developing agent, (iii) an activating concentration of an activator precursor consisting essentially of 1,3-bis(2-amino-2-thiazolinyl)propane.N,N'-ethylenebis(phthalamic acid), and (iv) a polymeric binder, and, contiguous to this layer (A), (B) at least one layer comprising an azoaniline dye that upon development of a latent image in said layer (A) by uniformly heating is bleached in the non-image areas of said element.

Claim 13

A heat developable, photographic element for providing a dye enhanced, silver image comprising a support having thereon: (A) at least one heat developable photographic layer comprising per dm 2 of support (i) 10 -4 to 10 -5 moles of photosensitive silver halide, (ii) 10 -4 to 10 -6 moles of at least one active silver halide developing agent, (iii) 5×10 -4 to 2×10 -5 moles of an activator precursor, and (iv) a gelatino binder, and, contiguous to this layer (A), (B) at least one layer comprising 10 -5 to 10 -6 moles of at least one azoaniline dye represented by the formula: ##STR54## wherein X is a benzene, thiophene, pyrrole, thiazole or furan ring having at least one electron withdrawing functional group that is a nitro, halo, trifluoromethyl, acetyl, cyano or methylsulfonyl group, selected to provide a sum of Hammett substituent constants that is greater than +0.7; R 1 , R 2 , R 3 and R 4 are individually selected from hydrogen, alkyl containing 1 to 12 carbon atoms, alkoxy containing 1 to 12 carbon atoms, acyl containing 1 to 12 carbon atoms, and amido containing 1 to 12 carbon atoms; Y and Z are individually selected from hydrogen, alkyl containing 1 to 12 carbon atoms and cycloalkyl containing 5 to 7 carbon atoms.

Claim 14

A heat developable, photographic element for providing a dye enhanced, silver image comprising a support having thereon: (A) at least one heat developable photographic layer comprising per dm 2 of support (i) 10 -4 to 10 -5 moles of photosensitive silver halide, (ii) 10 -4 to 10 -6 moles of at least one active silver halide developing agent, (iii) 5×10 -4 to 2×10 -5 moles of an activator precursor, and (iv) a gelatino binder, and, contiguous to this layer (A), (B) at least one layer comprising 10 -5 to 10 -6 moles of at least one azoaniline dye represented by the formula: ##STR54## wherein X is a benzene, thiophene, pyrrole, thiazole or furan ring having at least one electron withdrawing functional group that is a nitro, halo, trifluoromethyl, acetyl, cyano or methylsulfonyl group, selected to provide a sum of Hammett substituent constants that is greater than +0.7; R 1 , R 2 , R 3 and R 4 are individually selected from hydrogen, alkyl containing 1 to 12 carbon atoms, alkoxy containing 1 to 12 carbon atoms, acyl containing 1 to 12 carbon atoms, and amido containing 1 to 12 carbon atoms; Y and Z are individually selected from hydrogen, alkyl containing 1 to 12 carbon atoms and cycloalkyl containing 5 to 7 carbon atoms.

Claim 15

A heat developable, photographic element for providing a dye enhanced, silver image comprising a support having thereon: (A) at least one heat developable photographic layer comprising (i) photosensitive silver halide, (ii) 4-methyl-4-hydroxymethyl-1-phenyl-3-pyrazolidone, (iii) an activating concentration of an activator precursor consisting essentially of 1,3-bis(2-amino-2-thiazolinyl)propane.N,N'-ethylene bis(phthalamic acid), (iv) a gelatino binder, and, contiguous to this layer (A), (B) at least one layer comprising an azoaniline dye represented by the formula: ##STR55##

Claim 16

A heat developable, photographic element for providing a dye enhanced, silver image comprising a support having thereon: (A) at least one heat developable photographic layer comprising (i) photosensitive silver halide, (ii) 4-methyl-4-hydroxymethyl-1-phenyl-3-pyrazolidone, (iii) an activating concentration of an activator precursor consisting essentially of 1,3-bis(2-amino-2-thiazolinyl)propane.N,N'-ethylene bis(phthalamic acid), (iv) a gelatino binder, and, contiguous to this layer (A), (B) at least one layer comprising an azoaniline dye represented by the formula: ##STR55##

Claim 17

A heat developable, photographic element for providing a dye enhanced, silver image comprising a support having thereon: (A) at least one heat developable layer comprising (i) photosensitive silver halide, (ii) at least one active silver halide developing agent, (iii) an activating concentration of a development activator precursor, and (iv) a polymeric binder, and, contiguous to this layer (A), (B) at least one layer comprising an azoaniline dye that upon development of a latent image in said layer (A) by uniformly heating is bleached in the non-image areas of said element, wherein said azoaniline dye is represented by the formula: ##STR56## wherein X is a benzene, thiophene, pyrrole, thiazole or furan ring having at least one electron withdrawing functional group that is a nitro, halo, trifluoromethyl, acetyl, cyano or methylsulfonyl group, selected to provide a sum of Hammett substituent constants that is greater than +0.7; R 1 , R 2 , R 3 and R 4 are individually selected from hydrogen, alkyl containing 1 to 12 carbon atoms, alkoxy containing 1 to 12 carbon atoms, acyl containing 1 to 12 carbon atoms, and amido containing 1 to 12 carbon atoms; Y and Z are individually selected from hydrogen, alkyl containing 1 to 12 carbon atoms and cycloalkyl containing 5 to 7 carbon atoms.

Claim 18

A heat developable, photographic element for providing a dye enhanced, silver image comprising a support having thereon: (A) at least one heat developable layer comprising (i) photosensitive silver halide, (ii) at least one active silver halide developing agent, (iii) an activating concentration of a development activator precursor, and (iv) a polymeric binder, and, contiguous to this layer (A), (B) at least one layer comprising an azoaniline dye that upon development of a latent image in said layer (A) by uniformly heating is bleached in the non-image areas of said element, wherein said azoaniline dye is represented by the formula: ##STR56## wherein X is a benzene, thiophene, pyrrole, thiazole or furan ring having at least one electron withdrawing functional group that is a nitro, halo, trifluoromethyl, acetyl, cyano or methylsulfonyl group, selected to provide a sum of Hammett substituent constants that is greater than +0.7; R 1 , R 2 , R 3 and R 4 are individually selected from hydrogen, alkyl containing 1 to 12 carbon atoms, alkoxy containing 1 to 12 carbon atoms, acyl containing 1 to 12 carbon atoms, and amido containing 1 to 12 carbon atoms; Y and Z are individually selected from hydrogen, alkyl containing 1 to 12 carbon atoms and cycloalkyl containing 5 to 7 carbon atoms.

Claim 19

A process of providing a dye enhanced, silver image in an exposed heat developable, photographic element comprising a support having thereon: (A) at least one heat developable layer comprising (i) photosensitive silver halide, (ii) at least one active silver halide developing agent, (iii) an activating concentration of a development activator precursor, and (iv) a polymeric binder, and, contiguous to this layer (A), (B) at least one layer comprising an azoaniline dye that upon development of a latent image in said layer (A) by uniformly heating is bleached in the non-image areas of said element; comprising heating said element to a temperature within the range of about 115° C. to about 180° C. until an image is developed.

Claim 20

A process of providing a dye enhanced, silver image in an exposed heat developable, photographic element comprising a support having thereon: (A) at least one heat developable layer comprising (i) photosensitive silver halide, (ii) at least one active silver halide developing agent, (iii) an activating concentration of a development activator precursor, and (iv) a polymeric binder, and, contiguous to this layer (A), (B) at least one layer comprising an azoaniline dye that upon development of a latent image in said layer (A) by uniformly heating is bleached in the non-image areas of said element; comprising heating said element to a temperature within the range of about 115° C. to about 180° C. until an image is developed.

Claim 21

A process of providing a dye enhanced silver image in an exposed heat developable, photographic element as in claim 13 wherein said element is heated to a temperature with the range of about 115° C. to about 180° C. for 5 to 60 seconds.

Claim 22

A process of providing a dye enhanced, silver image in an exposed heat developable, photographic element comprising a support having thereon: (A) at least one heat developable, photographic layer comprising (i) photosensitive silver halide, (ii) at least one active silver halide developing agent, (iii) an activating concentration of a development activator precursor, and (iv) a gelatino binder, and, contiguous to this layer (A), (B) at least one layer comprising at least one azoaniline dye selected from the group consisting of ##STR57## and combination thereof; comprising heating said element to a temperature within the range of about 115° C. to about 180° C. until an image is developed.

Claim 23

A process of providing a dye enhanced, silver image in an exposed heat developable, photographic element comprising a support having thereon: (A) at least one heat developable, photographic layer comprising (i) photosensitive silver halide, (ii) at least one active silver halide developing agent, (iii) an activating concentration of a development activator precursor, and (iv) a gelatino binder, and, contiguous to this layer (A), (B) at least one layer comprising at least one azoaniline dye selected from the group consisting of ##STR57## and combination thereof; comprising heating said element to a temperature within the range of about 115° C. to about 180° C. until an image is developed.