Claims
- 1. A photosensitive element comprising a silver halide emulsion having silver halide grains containing an organic hole-trapping dopant, wherein said dopant is an agent releasing one or more electron(s) for reaction with a positive hole formed in the silver halide lattice after absorption of a photon and wherein said agent is incorporated in the silver halide lattice, and wherein the organic hole-trapping dopant is an inorganic or organic salt of formic acid.
- 2. A photosensitive element according to claim 1, wherein the organic hole-trapping dopant is present in an amount of from 50 p.p.m. up to 10−2 mole per mole of silver halide.
- 3. A photosensitive element according to claim 1, wherein the silver halide emulsion contains at least one J-aggregating dye as spectral sensitizer.
- 4. A photosensitive element according to claim 3, wherein the silver halide emulsion containing a spectral sensitizer further comprises a J-aggregate tuning product.
- 5. A photosensitive element according to claim 4, wherein the J-aggregate tuning product is a photographic stabilizer.
- 6. A photosensitive element according to claim 1, wherein the silver halide is composed of at least one halide selected from the group consisting of chloride, bromide and iodide.
- 7. A photosensitive element according to claim 1, wherein the silver halide contains at least 10 mole percent of bromide.
- 8. A photosensitive element according to claim 1, wherein the silver halide emulsion contains silver halide grains having a mean spherical equivalent diameter SED between 0.01 and 2.0 μm.
- 9. A photosensitive element according to claim 1, wherein the silver halide grains containing a hole-trapping dopant are grains having a core and an outermost shell and the outermost shell comprises said hole-trapping dopant.
- 10. A photosensitive element according to claim 9, wherein the shell contains less than 95 percent of the silver present in the grains.
- 11. A photosensitive element according to claim 1, wherein said element is a photoaddressable thermographic element, comprising a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith and a binder.
- 12. A photosensitive element according to claim 1, wherein said hole-trapping dopant is sodium formate.
Priority Claims (1)
Number |
Date |
Country |
Kind |
97203897 |
Dec 1997 |
EP |
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RELATED APPLICATIONS
This is a continuation of application Ser. No. 09/209,761 filed Dec. 11, 1998. Benefit is also claimed of U.S. Provisional Application No. 60/073,789 filed Feb. 5, 1998.
US Referenced Citations (6)
Provisional Applications (1)
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Number |
Date |
Country |
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60/073789 |
Feb 1998 |
US |
Continuations (1)
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Number |
Date |
Country |
Parent |
09/209761 |
Dec 1998 |
US |
Child |
09/865505 |
|
US |