| Patent Number |
Title Of Patent |
Date Issued |
| 4981775 |
Photothermographic elements |
January 1, 1991 |
| A photothermographic element comprising a support bearing an image forming system comprising:(a) a photosensitive silver halide(b) an organic silver compound(c) a polymer binder and(d) a reducing agent for the organic silver compound, characterized in that the reducing agent comprises a redo |
| 4594312 |
Heat bleachable dye systems |
June 10, 1986 |
| Photothermographic elements containing heat bleachable acutance/antihalation dyes and thermographic elements employing heat bleachable dyes of the formula: ##STR1## in which: n is 2, 3, 4 or 5,at least one of R.sup.1 to R.sup.4 represent hydrogen and the remainder of R.sup.1 to R |
| 4581323 |
Photothermographic element having topcoat bleachable antihalation layer |
April 8, 1986 |
| A photothermographic element comprising a reflective base having coated thereon one or more layers constituting a photothermographic imaging medium in which a bleachable antihalation medium is coated over said photothermographic imaging medium, the components of the antihalation medi |
| 4548896 |
Dye-bleach materials and process |
October 22, 1985 |
| An imagewise bleachable composition is described comprising a dye in reactive association with a mesoionic compound. The composition may be bleached by radiation at wavelengths between 200 and 1000 nm. |
