Ultrafine gold and/or silver chalcogenide and production thereof

Details Ultrafine gold and/or silver chalcogenide and production thereof Ultrafine gold and/or silver chalcogenide and production thereof

1992-05-27

1994-11-08

Straub, Gary P.

Chemistry of inorganic compounds

Selenium or tellurium or compound thereof

Binary compound

4235611, 423604, 2523014S, C01B 1904, C09K 1102

Patent

active

053624700

ABSTRACT:
A method for manufacturing an ultrafine gold and/or silver chalcogenide being used for the sensitivity speck seeding sensitization method is disclosed. The gold and/or silver compound, and a water-soluble chalcogenide are mixed into a protective colloid solution under prescribed condition. The light-sensitive photographic material obtained by this method has a high sensitivity and low fog property.

REFERENCES:
patent: 2609292 (1952-09-01), Waller et al.
patent: 3023081 (1962-02-01), Kulifay
patent: 3288561 (1966-11-01), Mellgren et al.
patent: 4289733 (1981-09-01), Saito et al.
patent: 5162106 (1992-11-01), Kunaa et al.

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