Photographic elements with light absorbing layers

Abstract

Novel photographic materials comprising a light-sensitive layer and a light-absorbing material are described. The light-absorbing materials comprise colored components which are decolorized by various forms of energy, such as, for example heat. The novel light-absorbing materials are useful in antihalation layers particularly adapted for photographic elements designed for development with heat.

What is claimed is: 
     
       1. Sheet material adapted for making accurate visible records of light images and comprising, in combination as coextensive layers, transparent support means, transparent photosensitive means for recording said light images .Iadd.forming at least one of said layers.Iaddend., and.Iadd., as a remaining of said layers, .Iaddend.light-absorptive heat decolorizable color means .[.which is.]. .Iadd.consisting essentially of .Iaddend.a compound represented by a formula selected from the group consisting of: ##STR30## wherein: R 1  can be one of: (a) a methine linkage terminated by a heterocyclic nucleus of the type contained in cyanine dyes,   .[.(b) an alkyl radical,.].   (c) an anilinovinyl radical,   .[.(d) a hydrogen atom,   (e) an aryl radical,   (f) an aldehyde group,.]. and   (g) a styryl radical;   R 8  can be one of: (a) a methine linkage terminated by a heterocyclic nucleus of the type contained in merocyanine dyes,     R can be one of: (a) an alkyl radical, and   (b) an acyl radical;     X is an acid anion;   Z represents the atoms necessary to complete a five to six membered heterocyclic nucleus.   
     
     
       2. Sheet material of claim 1 wherein said photosensitive means comprises silver halide. 
     
     
       3. Sheet material of claim 1 wherein said photosensitive means is heat-developable. 
     
     
       4. Sheet material of claim 1 wherein said photosensitive means includes a major proportion of organic silver salt oxidizing agent and reducing agent for silver ion as heat-sensitive reactant image-forming means. 
     
     
       5. Sheet material of claim 1 wherein said color means is heat-decolorizable under the same time-temperature conditions required to heat-develop said photosensitive means. 
     
     
       6. Sheet material of claim 1 wherein the color means is heat-decolorizable under the same time-temperature conditions required to heat-develop said photosensitive means. 
     
     
       7. Sheet material of claim 1 wherein said color means and said photosensitive means are in face-to-face contact. 
     
     
       8. Sheet material of claim 1 wherein said support means lies between said color means and said photosensitive means. 
     
     
       9. Sheet material of claim 1 wherein said color means is incorporated in said support means. 
     
     
       10. A photographic element comprising a transparent support having thereon a photosensitive layer and a light absorbing heat-decolorizable color antihalation organic dye wherein said organic dye .Iadd.containing layer .Iaddend.is a compound represented by a formula selected from the group consisting of: ##STR31## wherein: R 1  can be one of: (a) a methine linkage terminated by a heterocyclic nucleus of the type contained in cyanine dyes,   .[.(b) an alkyl radical,.].   (c) an anilinovinyl radical,   .[.(d) a hydrogen atom,   (e) an aryl radical,   (f) an aldehyde group,.]. and   (g) a styryl radical;   R 8  can be one of: (a) a methine linkage terminated by a heterocyclic nucleus of the type contained in merocyanine dyes,     R can be one of (a) an alkyl radical, and   (b) an acyl radical;     X is an acid anion;   Z represents the atoms necessary to complete a five to six membered heterocyclic nucleus.   
     
     
       11. A photographic element of claim 10 wherein said organic dye is 3'-ethyl-1-methoxy-4',5'-benzo-2-pyridothiacarbocyanine perchlorate. 
     
     
       12. A photographic element of claim 10 wherein said organic dye is 3'-ethyl-1-methoxy-2-pyridothiacyanine iodide. 
     
     
       13. A photographic element comprising a support having thereon a photosensitive emulsion layer and an antihalation layer, said antihalation layer comprising at least one light absorptive, heat decolorizable compound having a formula selected from the group consisting of: ##STR32## wherein: R 1  is selected from the group consisting of: (a) a methine linkage terminated by a heterocyclic nucleus of the type contained in cyanine dyes,   .[.(b) an alkyl radical,.].   (c) an anilinovinyl radical,   .[.(d) a hydrogen atom,   (e) an aryl radical,   (f) an aldehyde group,.]. and   (g) a styryl radical;   R 8  is selected from the group consisting of: (a) a methine linkage terminated by a heterocyclic nucleus of the type contained in merocyanine dyes and     R is selected from the group consisting of: (a) an alkyl radical and   (b) an acyl radical;     X is an acid anion; and   Z represents the atoms necessary to complete a 5 to 7 membered heterocyclic nucleus.   
     
     
       14. The photographic element of claim 13 wherein Z is selected from the group consisting of a pyridine nucleus and a quinoline nucleus. 
     
     
       15. The photographic element of claim 13 wherein R 1  is a methine linkage terminated by a 5 to 6 membered heterocyclic nucleus having at least one hetero nitrogen atom. 
     
     
       16. A photographic element comprising a support having thereon a photosensitive emulsion layer and an antihalation layer, said antihalation layer comprising at least one light absorptive heat-decolorizable dye represented by a formula selected from the group consisting of: ##STR33## wherein: Q 1 , Q 2 , Q 4  and Q 9  each represent the non-metallic atoms necessary to complete a 5 to 6 membered heterocyclic nucleus; n is a positive integer from 1 to 4;   m is a positive integer from 1 to 3;   .[.R 5  is an alkyleneoxy radical having 1 to 8 carbon atoms in the alkylene chain;.].   g is a positive integer from 1 to 2;   X is an acid anion;   L is a methine linkage;   R is selected from the group consisting of an alkyl radical and an acyl radical;   R 2  and R 4  are each selected from the group consisting of an aryl radical, a hydrogen atom and an alkyl radical;   R 6  and R 7  are each a cyano radical;   R 3  is selected from the group consisting of an alkyl radical, an alkenyl radical, an aryl radical and an alkoxy radical; and   G is selected from the group consisting of an anilinovinyl radical and an aryl radical.   
     
     
       17. A photographic element comprising a support having thereon: (a) a red-sensitive silver halide emulsion layer,   (b) a green-sensitive silver halide emulsion layer superimposed on said red-sensitive layer,   (c) a bleachable yellow filter layer superimposed on said green-sensitive layer, and   (d) a blue sensitive silver halide emulsion layer superimposed on said yellow filter, wherein said bleachable yellow filter layer comprises a yellow dye represented by a formula selected from the group consisting of: ##STR34## wherein: R 1  is selected from the group consisting of: (a) a methine linkage terminated by a heterocyclic nucleus of the type contained in cyanine dyes,   .[.(b) an alkyl radical,.].   (c) an anilinovinyl radical,   .[.(d) a hydrogen atom,   (e) an aryl radical;   (f) an aldehyde group,.]. and   (g) a styryl radical;     R 8  is selected from the group consisting of: (a) a methine linkage terminated by a heterocyclic nucleus of the type contained in merocyanine dyes and     R is selected from the group consisting of: (a) an alkyl radical; and   (b) an acyl radical;     X is an acid anion; and   Z represents the atoms necessary to complete a 5 to 6 membered heterocyclic nucleus.   
     
     
       18. The photographic element of claim 17 wherein Z is selected from the group consisting of a pyridine nucleus and a quinoline nucleus. 
     
     
       19. The photographic element of claim 17 wherein R 1  is a methine linkage terminated by a 5 to 6 membered heterocyclic nucleus. 
     
     
       20. A photographic element comprising a support having thereon: (a) a red-sensitive silver halide emulsion layer,   (b) a green-sensitive silver halide emulsion layer superimposed on said red-sensitive layer,   (c) a bleachable yellow filter layer superimposed on said green-sensitive layer, and   (d) a blue-sensitive silver halide emulsion layer superimposed on said yellow filter layer wherein said bleachable yellow filter layer comprises a light absorptive heat-decolorizable yellow dye represented by a formula selected from the group consisting of: ##STR35## wherein: Q 1  Q 2 , Q 4  and Q 9  each represent the non-metallic atoms necessary to complete a 5 to 6 membered heterocyclic nucleus;   n is a positive integer from 1 to 4;   m is a positive integer from 1 to 3;   .[.R 5  is an alkyleneoxy radical having 1 to 8 carbon atoms in the alkylene chain;.].   g is a positive integer from 1 to 2;   X is an acid anion;   L is a methine linkage;   R is selected from the group consisting of an alkyl radical and an acyl radical;   R 6  and R 7  are each dicyano radicals;   R 2  and R 4  are each selected from the group consisting of an aryl radical, a hydrogen atom and an alkyl radical;   R 3  is selected from the group consisting of an alkyl radical, an alkenyl radical, an aryl radical and an alkoxy radical;   G is selected from the group consisting of an anilinovinyl radical and an aryl radical.   
     
     
       21. A photographic element comprising a support having thereon a photosensitive layer comprising photosensitive silver halide and an oxidation-reduction image forming combination and an antihalation layer comprising at least one light absorptive, heat decolorizable compound having a formula selected from the group consisting of: ##STR36## wherein: R 1  is selected from the group consisting of: (a) a methine linkage terminated by a heterocyclic nucleus of the type contained in cyanine dyes,   .[.(b) an alkyl radical,.].   (c) an anilinovinyl radical,   .[.(d) a hydrogen atom,   (e) an aryl radical,   (f) an aldehyde group,.].and   (g) a styryl radical;   R 8  is selected from the group consisting of: (a) a methine linkage terminated by a heterocyclic nucleus of the type contained in merocyanine dyes and     R is selected from the group consisting of (a) an alkyl radical and   (b) an acyl radical;     Z represents the atoms necessary to complete a pyridine or quinoline nucleus.