Chloride bromide and iodide nucleation of high chloride (100) ta

Details Chloride bromide and iodide nucleation of high chloride (100) ta Chloride bromide and iodide nucleation of high chloride (100) ta

1997-11-24

1999-05-18

Huff, Mark F.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

G03C1/035;1/015

Patent

active

059050225

ABSTRACT:
A process of preparing a photographically useful high chloride {100} tabular grain emulsion is disclosed. The grain characteristics of the emulsion are improved by interrupting precipitation of the grain nuclei used to prepare the emulsion by performing a halide conversion step in which a molar ratio of iodide ion to bromide ion in the range of from 1.times.10.sup.-4 :1 to 5.times.10.sup.-2 :1 is employed.

REFERENCES:
patent: 5264337 (1993-11-01), Maskasky
patent: 5292632 (1994-03-01), Maskasky
patent: 5320938 (1994-06-01), House et al.
patent: 5413904 (1995-05-01), Chang et al.
patent: 5641620 (1997-06-01), Yamashita et al.
patent: 5663041 (1997-09-01), Chang et al.
patent: 5665530 (1997-09-01), Oyamada et al.

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