Class of grain growth modifiers for the preparation of high chlo

Details Class of grain growth modifiers for the preparation of high chlo Class of grain growth modifiers for the preparation of high chlo

1994-07-27

1995-05-02

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430567, 430607, 430613, G03C 107

Patent

active

054118522

ABSTRACT:
A process is disclosed of preparing a high chloride {111} tabular grain emulsion. Tabular grains are formed having {111} major faces, containing at least 50 mole percent chloride and less than 5 mole percent iodide, based on silver, and accounting for at least 50 percent of total grain projected area by introducing silver ion into a gelatino-peptizer dispersing medium containing a stoichiometric excess of chloride ions with respect to silver ions and a phenol that is incapable of reducing silver chloride and has at least two iodo substituents, which acts as a grain growth modifier.

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patent: 5298387 (1994-03-01), Maskasky

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