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US 4,459,353 AGranted
Gamma phase silver iodide emulsions, photographic elements containing these emulsions, and processes for their use
AssigneeEastman Kodak Company
InventorJoe E. Maskasky
Life of this patent
Estimating the term…
Abstract
A silver halide emulsion is disclosed comprised of thin tabular silver iodide grains of a face centered cubic crystal structure. These tabular grains have a high average aspect ratio and account for at least 50 percent of the total projected area of the silver halide grains present in the emulsion. The emulsions are useful in blue recording as well as other layers of photographic elements.
Claims20
A high aspect ratio tabular grain silver halide emulsion comprised of
- a dispersing medium and
- silver halide grains, wherein at least 50 percent of the total projected area of said silver halide grains is provided by tabular silver iodide grains of a face centered cubic crystal structure having a thickness of less than 0.3 micron and an average aspect ratio of greater than 8:1.
Dependencies are inferred from the claim text.