Photothermographic material

1. A photothermographic material comprising a support, and an image-forming layer and a non-photosensitive layer provided on a surface of the support,

wherein the image-forming layer and the non-photosensitive layer are adjacent to each other;

the image-forming layer includes a photosensitive silver halide, a first non-photosensitive organic silver salt, a first reducing agent, a polyhalogen compound and a binder; and

the non-photosensitive layer includes a second non-photosensitive organic silver salt and a second reducing agent, so as to form an image on the non-photosensitive layer.

2. A photothermo graphic material comprising a support, and an image-forming layer and a non-photosensitive layer provided on a surface of the support,

wherein the image-forming layer and the non-photosensitive layer are adjacent to each other;

the image-forming layer includes a photosensitive silver halide, a first non-photosensitive organic silver salt, a first reducing agent, a polyhalogen compound and a binder;

the non-photosensitive layer includes a second non-photosensitive organic silver salt and a second reducing agent; and

the second reducing agent is a reducing agent represented by formula (I) having a nucleating activity, so as to form an image on the non-photosensitive layer:

wherein in formula (1), R 11 and R 11′ each independently represent a secondary or tertiary alkyl group having 3 to 20 carbon atoms; R 12 and R 12′ each independently represent a hydrogen atom, or a group in which an atom bonded to the CH 2 group on the benzene ring is selected from the group consisting of a nitrogen atom, an oxygen atom, a phosphorus atom and a sulfur atom; and R 13 represents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms.

3. A photothermographic material comprising a support, and an image-forming layer and a non-photosensitive layer provided on a surface of the support,

wherein the image-forming layer and the non-photosensitive layer are adjacent to each other;

the image-forming layer includes a photosensitive silver halide, a first non-photosensitive organic silver salt, a first reducing agent, a polyhalogen compound and a binder; and

the non-photosensitive layer includes a second non-photosensitive organic silver salt, a second reducing agent, and a nucleating agent, so as to form an image on the non-photosensitive layer.

4. The photothermographic material of claim 1 , wherein the first reducing agent and the second reducing agent are different from each other, second reducing agent is a reducing agent represented by formula (I), and the first reducing agent is a reducing agent represented by formula (II):

wherein in formula (1), R 11 and R 11′ each independently represent a secondary or tertiary alkyl group having 3 to 20 carbon atoms; R 12 and R 12′ each independently represent a hydrogen atom, or a group in which an atom bonded to the CH 2 group on the benzene ring is selected from the group consisting of a nitrogen atom, an oxygen atom, a phosphorus atom and a sulfur atom; and R 13 represents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms,

wherein in formula (2), R 11 and R 11′ each independently represent an alkyl group having 1 to 20 carbon atoms; R 12 and R 12′ each independently represent a hydrogen atom or a substituent which can be bonded to the benzene ring; L represents a —S— group or a —CHR 13 — group and R 13 represents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms; and X 1 and X 1′ each independently represent a hydrogen atom or a substituent which can be bonded to the benzene ring.

5. The photothermographic material of claim 1 , wherein the first non-photosensitive organic silver salt has a silver behenate content which is higher than a silver behenate content of the second non-photosensitive organic silver salt.

6. The photothermographic material of claim 2 , wherein the first non-photosensitive organic silver salt has a silver behenate content which is higher than a silver behenate content of the second non-photosensitive organic silver salt.

7. The photothermographic material of claim 1 , wherein the photosensitive silver halide has a content of silver iodide in a range of 40 mol % to 100 mol %.

8. The photothermographic material of claim 1 , wherein the non-photosensitive layer further includes a binder which has a proportion of hydrophobic polymers of 50 mass % or higher.

9. The photothermographic material of claim 3 , wherein the photosensitive silver halide has a content of silver iodide in a range of 40 mol % to 100 mol %.

10. The photothermographic material of claim 1 , wherein a ratio of an amount of the first organic silver salt to an amount of the second organic silver salt is within a range of 80:20 to 60:40.

11. The photothermographic material of claim 3 , wherein the second reducing agent contained in the non-photosensitive layer is represented by formula (R):

wherein in formula (R), R 11 and R 11′ each independently represent an alkyl group having 1 to 20 carbon atoms; R 12 and R 12′ each independently represent a hydrogen atom or a substituent which can be bonded to the benzene ring; L represents an —S— group or a —CHR 13 — group, and R 13 represents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms; X 1 and X 1′ each independently represent a hydrogen atom or a substituent which can be bonded to the benzene ring.

12. The photothermographic material of claim 3 , wherein the first reducing agent and the second reducing agent are different from each other, second reducing agent is a reducing agent represented by formula (I), and the first reducing agent is a reducing agent represented by formula (II):

wherein in formula (1), R 11 and R 11′ each independently represent a secondary or tertiary alkyl group having 3 to 20 carbon atoms; R 12 and R 12′ each independently represent a hydrogen atom, or a group in which an atom bonded to the CH 2 group on the benzene ring is selected from the group consisting of a nitrogen atom, an oxygen atom, a phosphorus atom and a sulfur atom; and R 13 represents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms,

wherein in formula (2), R 11 and R 11′ each independently represent an alkyl group having 1 to 20 carbon atoms; R 12 and R 12′ each independently represent a hydrogen atom or a substituent which can be bonded to the benzene ring; L represents a —S— group or a —CHR 13 — group and R 13 represents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms; and X 1 and X 1′ each independently represent a hydrogen atom or a substituent which can be bonded to the benzene ring.

13. The photothermographic material of claim 3 , wherein the first non-photosensitive organic silver salt has a silver behenate content which is higher than a silver behenate content of the second non-photosensitive organic silver salt.

14. The photothermographic material of claim 1 , wherein the non-photosensitive layer further includes a development accelerator.

15. The photothermographic material of claim 3 , wherein the non-photosensitive layer further includes a development accelerator.

16. The photothermographic material of claim 2 , wherein the non-photosensitive layer further includes a binder which has a proportion of hydrophobic polymers of 50 mass % or higher.

17. The photothermographic material of claim 3 , wherein the non-photosensitive layer further includes a binder which has a proportion of hydrophobic polymers of 50 mass % or higher.

18. The photothermographic material of claim 2 , wherein the photosensitive silver halide has a content of silver iodide in a range of 40 mol % to 100 mol %.

19. The photothermographic material of claim 2 , wherein a ratio of an amount of the first organic silver salt to an amount of the second organic silver salt is within a range of 80:20 to 60:40.

20. The photothermographic material of claim 3 , wherein a ratio of an amount of the first organic silver salt to an amount of the second organic silver salt is within a range of 80:20 to 60:40.