Fine grain bromide emulsions as carriers for photographically useful ingredients added during emulsion finishing
AssigneeEastman Kodak Company
InventorsPaul T. Hahm, Walter H. Isaac, Heinz E. Stapelfeldt
Life of this patent
Estimating the term…
Abstract
The invention generally relates to a method of silver halide grain finishing comprising providing a high chloride silver halide grain emulsion and adding a silver bromide fine grain Lippmann emulsion during the chemical sensitization heat cycle for each grain wherein said fine grain emulsion has a photographically useful compound adhered to said fine grain Lippmann emulsion.
Claims15
A method of silver halide grain finishing comprising providing a high chloride silver halide emulsion and adding a silver halide fine grain emulsion during a chemical sensitization heat cycle for said high chloride silver halide emulsion wherein said fine grain emulsion has a photographically useful compound adhered to surface of the grains of said fine grain emulsion wherein said photographically useful compound is selected from the group consisting of UV absorbers, sensitizing dyes, brighteners, antifoggants, luminescent dyes. supersensitizers, stabilizers, light absorbing and scattering materials, coating aids, plasticizers, lubricants, and antistats.
Dependencies are inferred from the claim text.