Image forming method using photothermographic material
View Patent ↗An image forming method applying X-ray exposure to a photothermographic material having, on at least one surface of a support, an image forming layer containing at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for silver ions, and a binder, wherein the photothermographic material is brought into close contact with a fluorescence intensifying screen containing a fluorescent material that emits light, 50% or more of which has a wavelength in a range of 350 nm or more and 420 nm or less.
1. An image forming method applying X-ray exposure to a photothermographic material having, on at least one surface of a support, an image forming layer comprising at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for silver ions, and a binder, wherein the photothermographic material is brought into close contact with a fluorescence-intensifying screen comprising a fluorescent material that emits light, 50% or more of which has a wavelength in a range of 350 nm or more and 420 nm or less.
2. The image forming method of claim 1 , wherein the fluorescent material is a bivalent Eu activated fluorescent material.
3. The image forming method of claim 2 , wherein the bivalent Eu activated fluorescent material is a bivalent Eu activated barium halide fluorescent material.
4. The image forming method of claim 1 , wherein the photosensitive silver halide has a direct transition absorption derived from a crystal structure of a high silver iodide.
5. The image forming method of claim 2 , wherein the photosensitive silver halide has a direct transition absorption derived from a crystal structure of a high silver iodide.
6. The image forming method of claim 3 , wherein the photosensitive silver halide has a direct transition absorption derived from a crystal structure of a high silver iodide.
7. The image forming method of claim 4 , wherein the photosensitive silver halide has a silver iodide content of 40 mol % or more.
8. The image forming method of claim 5 , wherein the photosensitive silver halide has a silver iodide content of 40 mol % or more.
9. The image forming method of claim 6 , wherein the photosensitive silver halide has a silver iodide content of 40 mol % or more.
10. The image forming method of claim 4 , wherein the photosensitive silver halide has a silver iodide content of 80 mol % or more.
11. The image forming method of claim 4 , wherein the photosensitive silver halide has a silver iodide content of 90 mol % or more.
12. The image forming method of claim 4 , wherein the photothermographic material comprises a compound capable of substantially lowering the direct transition absorption derived from the crystal structure of the high silver iodide by thermally developing the photothermographic material at a temperature of 80° C. or higher and 180° C. or lower.
13. The image forming method of claim 5 , wherein the photothermographic material comprises a compound capable of substantially lowering the direct transition absorption derived from the crystal structure of the high silver iodide by thermally developing the photothermographic material at a temperature of 80° C. or higher and 180° C. or lower.
14. The image forming method of claim 6 , wherein the photothermographic material comprises a compound capable of substantially lowering the direct transition absorption derived from the crystal structure of the high silver iodide by thermally developing the photothermographic material at a temperature of 80° C. or higher and 180° C. or lower.
15. The image forming method of claim 12 , wherein the compound capable of substantially lowering the direct transition absorption derived from the crystal structure of the high silver iodide comprises a silver iodide complex forming agent.
16. The image forming method of claim 13 , wherein the compound capable of substantially lowering the direct transition absorption derived from the crystal structure of the high silver iodide comprises a silver iodide complex forming agent.
17. The image forming method of claim 14 , wherein the compound capable of substantially lowering the direct transition absorption derived from the crystal structure of the high silver iodide comprises a silver iodide complex forming agent.
18. The image forming method of claim 1 , wherein the photosensitive silver halide comprises plate-like particles having an aspect ratio of 2 or more.
19. The image forming method of claim 2 , wherein the photosensitive silver halide comprises plate-like particles having an aspect ratio of 2 or more.
20. The image forming method of claim 1 , wherein the photosensitive silver halide has an average sphere-equivalent diameter of 0.3 μm or more and 5.0 μm or less.
21. The image forming method of claim 1 , wherein the photothermographic material has the image forming layer on both sides of the support.