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Photographic speed increasing and latent image stabilizing compounds, silver halide emulsions, and photographic elements |
| T103803 |
Photographic speed increasing and latent image stabilizing compounds, silver halide emulsions, and photographic elements
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| Inventor: |
Lok, et al. |
| Date Issued: |
January 3, 1984 |
| Application: |
06/408,536 |
| Filed: |
August 16, 1982 |
| Inventors: |
Baum; William N. (Henrietta, NY)
Freeman; John P. (Rochester, NY)
Lok; Roger (Hilton, NY)
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| U.S. Class: |
430/505; 430/551; 430/600; 430/614; 548/121; 548/161; 548/179; 548/217; 548/222; 548/307.4; 548/309.7 |
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| Abstract: |
Photographic silver halide emulsions show increased speed and reduced latent image fading when a compound of the following structure is incorporated: ##STR1## wherein: X is --O--, --S--, --Se--, or ##STR2## Y represents the atoms completing a fused aromatic nucleus; Z is ##STR3## and R is hydrogen or lower alkyl of from 1 to 5 carbon atoms. |
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