(19) |
 |
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(11) |
EP 0 302 528 A3 |
(12) |
EUROPEAN PATENT APPLICATION |
(88) |
Date of publication A3: |
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22.11.1990 Bulletin 1990/47 |
(43) |
Date of publication A2: |
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08.02.1989 Bulletin 1989/06 |
(22) |
Date of filing: 08.08.1988 |
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(84) |
Designated Contracting States: |
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DE FR GB |
(30) |
Priority: |
07.08.1987 JP 197741/87 02.09.1987 JP 219983/87 02.09.1987 JP 219984/87
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(71) |
Applicant: FUJI PHOTO FILM CO., LTD. |
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Kanagawa 250-01 (JP) |
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(72) |
Inventors: |
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- Mifune, Hiroyuki
Minami Ashigara-shi
Kanagawa (JP)
- Takada, Shunji
Minami Ashigara-shi
Kanagawa (JP)
|
(74) |
Representative: Patentanwälte
Dr. Solf & Zapf |
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Candidplatz 15 81543 München 81543 München (DE) |
|
|
|
(54) |
Process for producing a silver halide photographic material |
(57) A silver halide photographic material composed of a support having thereon at least
one silver halide emulsion layer containing substantially normal silver halide grains
having a (111) plane and a (100) plane and capable of preferentially forming a latent
image on the (100) plane; the (111) plane occupying at least about 40% of the surface
of the grains or the (100) plane occupying more than about 60% of the surface of the
grains; provided that when the (111) plane occupies at least about 40% of the surface
of the grains, the grains are spectrally sensitized with (a) at least one spectral
sensitizing dye selectively. adsorbed more on the (100) plane than on the (111) plane,
or (b) at least one spectral sensitizing dye selectively adsorbed more on the (111)
plane than on the (100) plane. Since most of a sensitizing dye and the site where
a latent image is formed can be separated on the surface of silver halide grains,
the photographic material exhibits high sensitivity even when developed with a developing
solution having low solubility.
