Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1995-12-28
1998-05-26
Huff, Mark F.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430567, G03C 1015, G03C 1035, G03C 107
Patent
active
057562776
ABSTRACT:
A method for producing a silver halide emulsion comprising high silver chloride tabular grains each having a chloride content of 50 mol % or more and having a major plane comprising a (111) face, which comprises a step for conducting nucleation of said grains substantially in the absence of a crystal phase controlling agent to form grains which have two twin planes parallel with each other and of which most of the surface are (100) faces, a step for ripening said grains by adding a crystal phase controlling agent which adsorbs to the (111) face or a mixture of a crystal phase controlling agent which adsorbs to the (111) face and a protective colloid to reduce the ratio of grains other than the grains having two or more parallel twin planes and then a step for growing with remaining tabular grains having a major plane mainly comprising a (111) face to form tabular grains having a major plane comprising a (111) face.
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patent: 5399478 (1995-03-01), Maskasky
patent: 5411852 (1995-05-01), Maskasky
Fuji Photo Film Co. , Ltd.
Huff Mark F.
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