| (19) |
 |
|
(11) |
EP 0 405 938 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
20.05.1992 Bulletin 1992/21 |
| (43) |
Date of publication A2: |
|
02.01.1991 Bulletin 1991/01 |
| (22) |
Date of filing: 27.06.1990 |
|
|
| (84) |
Designated Contracting States: |
|
DE GB IT NL |
| (30) |
Priority: |
27.06.1989 JP 165080/89
|
| (71) |
Applicant: KONICA CORPORATION |
|
Tokyo 160 (JP) |
|
| (72) |
Inventors: |
|
- Tashiro, Kouji,
Konica Corporation
Hino-shi,
Tokyo (JP)
- Hoshino, Hiroyuki,
Konica Corporation
Hino-shi,
Tokyo (JP)
- Murakami, Shuji,
Konica Corporation
Hino-shi,
Tokyo (JP)
- Matsuzaka, Shoji,
Konica Corporation
Hino-shi,
Tokyo (JP)
- Ohtani, Hirofumi,
Konica Corporation
Hino-shi,
Tokyo (JP)
|
| (74) |
Representative: Ellis-Jones, Patrick George Armine et al |
|
J.A. KEMP & CO.
14 South Square
Gray's Inn
London WC1R 5LX
London WC1R 5LX (GB) |
|
| |
|
| (54) |
High-speed silver halide phototographic light-sensitive material |
(57) A method for preparing a silver halide photographic emulsion containing silver halide
grains, each of which has two or more phases different in the silver halide composition,
comprising a step of growing silver halide grains, in which said silver halide grains
are grown by supplying a solution of water-soluble silver salt and a solution of water-soluble
halide, wherein fine grains of silver halide having a solubility product smaller than
that of silver halide grains present in the course of growing silver halide grains
are made present in the silver halide emulsion at a time during the grain-growth,
iridium ions being individually added at a time when or after starting the grain-growth.