Verfahren zur Herstellung einer Gelatine-Silberhalogenidemulsion

摘要

1287978 Silver halide emulsions ILFORD Ltd 20 May 1971 [26 June 1970] 31166/70 Heading G2C Aqueous potassium ferricyanide is added to gelatine/silver halide emulsion before or during physical ripening. The emulsion is then flocculated and chemically sensitized. 0À01-1À0 gm of potassium ferricyanide per 1À5 moles of silver salt may be employed. The internal sensitivity is thereby decreased. Reference has been directed by the Comptroller to Specification 1244818.