Silver halide emulsions containing hexathiocane thiones as sensitizers
AssigneeE. I. Du Pont de Nemours and Company
InventorJohn Howard Bigelow
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Abstract
Photographic silver halide emulsions are prepared which have their sensitivity increased by the addition of hexathiocane thiones having the basic structure: ##STR1## where R is an alkyl, unsaturated alkyl, or a saturated cyclic group, and R.sub.1 is aryl or substituted aryl.
Claims7
A photographic element comprising a support coated with a light-sensitive silver halide emulsion containing a sensitizing amount of a hexathiocane thione sensitizer which has the basic structure ##STR17## wherein R is a member of the group consisting of alkyl, unsaturated alkyl, and a saturated cyclic group, and R.sub.1 is aryl or substituted aryl.
Dependencies are inferred from the claim text.