Claims
- 1. A dispersion containing at least one substantially light-insensitive organic silver salt, a suspending medium and deliberately added metal nano-particles in a molar ratio with respect to the total molar concentration of said at least one substantially light-insensitive organic silver salt in the range of 0.05:1 to 10−6:1, wherein said substantially light-insensitive organic silver salt is substantially insoluble in said suspending medium.
- 2. Dispersion according to claim 1, wherein said metal is selected from the group consisting of silver, gold and palladium or alloys thereof.
- 3. Dispersion according to claim 1, wherein said dispersion further comprises photosensitive silver halide.
- 4. A process for producing a dispersion containing at least one substantially light-insensitive organic silver salt, a suspending medium and deliberately added metal nano-particles in a molar ratio with respect to the total molar concentration of said at least one substantially light-insensitive organic silver salt in the range of 0.05:1 to 10−6:1, wherein said substantially light-insensitive organic silver salt is substantially insoluble in said suspending medium, comprising the steps of: (i) preparing a dispersion of a light-insensitive organic silver salt; (ii) preparing a dispersion of metal nuclei; (iii) mixing the dispersion of metal nuclei of step (ii) with one or more dispersions of a light-insensitive organic silver salt.
Priority Claims (1)
Number |
Date |
Country |
Kind |
01000691.4 |
Nov 2001 |
EP |
|
Parent Case Info
[0001] This application is a divisional of U.S. patent application Ser. No. 10/306,254 filed Nov. 27, 2002 and claims the benefit of U.S. Provisional Application No. 60/349,510 filed Jan. 18, 2002, and of European Patent Application No. 01000691.4 filed Nov. 30, 2001, all of which are incorporated by reference.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60349510 |
Jan 2002 |
US |
Divisions (1)
|
Number |
Date |
Country |
Parent |
10306254 |
Nov 2002 |
US |
Child |
10847833 |
May 2004 |
US |