Patent ID: 7223528

Claim:
A photothermographic material comprising, on at least one side of a support, an image forming layer comprising at least a photosensitive silver halide, a non-photosensitive organic silver salt, and a reducing agent for the organic silver salt, and at least one non-photosensitive layer, wherein the photothermographic material contains a water-soluble magenta dye represented by the following Formula (III): wherein in Formula (III), R 9 represents one selected from a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic group, cyano, —OR 11 , —SR 12 , —CO 2 R 13 , —OCOR 14 , —NR 15 R 16 , —CONR 17 R 18 , —SO 2 R 19 , —SO 2 NR 20 R 21 , —NR 22 CONR 23 R 24 , —NR 25 CO 2 R 26 , —COR 27 , —NR 28 COR 29 , and —NR 30 SO 2 NR 31 , and R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 , R 18 , R 19 , R 20 , R 21 , R 22 , R 23 , R 24 , R 25 , R 26 , R 27 , R 28 , R 29 , R 30 and R 31 each independently represent one selected from a hydrogen atom, an aliphatic group, and an aromatic group; Z represents a group of atoms forming a 5 or 6-membered nitrogen-containing heterocycle, which may be substituted by at least one of an aliphatic group, an aromatic group, a heterocyclic group, cyano, —OR 111 , —SR 112 , —CO 2 R 113 , —OCOR 114 , —NR 115 R 116 , —CONR 117 R 118 , —SO 2 R 119 , —SO 2 NR 120 R 121 , —NR 122 CONR 123 R 124 , —NR 125 CO 2 R 126 , —COR 127 , —NR 128 COR 129 , and —NR 130 SO 2 NR 131 , and this heterocycle may further form a condensed ring with another ring; R 111 , R 112 , R 113 , R 114 , R 115 , R 116 , R 117 , R 118 , R 119 , R 120 , R 121 , R 122 , R 123 , R 124 , R 125 , R 126 , R 127 , R 128 , R 129 , R 130 , and R 131 each independently represent one selected from a hydrogen atom, an aliphatic group, and an aromatic group; A represents one selected from —NR 4 R 5 and a hydroxy group, R 4 and R 5 each independently representing one selected from a hydrogen atom, an aliphatic group, an aromatic group and a heterocyclic group; B 1 represents one selected from ═C(R 6 )— and ═N—; B 2 represents one selected from —C(R 7 )═ and —N═; R 2 , R 3 , R 6 and R 7 each independently representing one selected from a hydrogen atom, a halogen atom, an aliphatic group, an aromatic group, a heterocyclic group, cyano, —OR 51 , —SR 52 , —CO 2 R 53 , —OCOR 54 , —NR 55 R 56 , —CONR 57 R 58 , —SO 2 R 59 , —SO 2 NR 60 R 61 , —NR 62 CONR 63 R 64 , —NR 65 CO 2 R 66 , —COR 67 , —NR 68 COR 69 and —NR 70 SO 2 NR 71 , and R 51 , R 52 , R 53 , R 54 , R 55 , R 56 , R 57 , R 58 , R 59 , R 60 , R 61 , R 62 , R 63 , R 64 , R 65 , R 66 , R 67 , R 68 , R 69 , R 70 and R 71 each independently represent one selected from a hydrogen atom, an aliphatic group and an aromatic group; and at least one of Z, R 2 , R 3 , R 9 , B 1 , B 2 and A contains a water-soluble group.