(19) |
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(11) |
EP 0 724 190 A3 |
(12) |
EUROPEAN PATENT APPLICATION |
(88) |
Date of publication A3: |
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07.08.1996 Bulletin 1996/32 |
(43) |
Date of publication A2: |
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31.07.1996 Bulletin 1996/31 |
(22) |
Date of filing: 26.01.1996 |
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(84) |
Designated Contracting States: |
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DE FR GB |
(30) |
Priority: |
30.01.1995 US 380544 20.04.1995 US 425522 06.06.1995 US 466489
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(71) |
Applicant: EASTMAN KODAK COMPANY |
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Rochester,
New York 14650-2201 (US) |
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(72) |
Inventors: |
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- Szajewski, Richard P.,
c/o Eastman Kodak Co.
Rochester,
New York 14650-2201 (US)
- Buchanan, John M.,
c/o Eastman Kodak Co.
Rochester,
New York 14650-2201 (US)
- Gordon, Stuart T.,
c/o Eastman Kodak Co.
Rochester,
New York 14650-2201 (US)
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(74) |
Representative: Baron, Paul Alexander Clifford et al |
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Kodak Limited
Patent Department
Headstone Drive Harrow
Middlesex HA1 4TY Harrow
Middlesex HA1 4TY (GB) |
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(54) |
Method of processing originating photographic elements containing tabular grain emulsions |
(57) This invention relates to a rapid access image forming process for high sensitivity
color photographic elements comprising the step of contacting an imagewise exposed
camera speed color photographic element with a developing solution wherein:
(A) the color photographic element comprises a support and, coated on the support,
at least one radiation sensitive emulsion layer having in reactive association an
image dye forming coupler and within which at least 50% of total grain projected area
is accounted for by tabular grains each
(1) bounded by {100} major faces having adjacent edge ratios of less than 10;
(2) having an aspect ratio of at least 2; and
(3) comprising at least 50 mol % silver chloride;
(B) the contact time of the photographic element with the developing solution is between
5 and 150 seconds; and
(C) the developing solution has:
(1) a temperature is from 25 to 65 °C;
(2) bromide ion at a concentration from 0.25 to 50 mmol/liter;
(3) a color developing agent at a concentration from 1 to 200 mmol/liter; and
(4) a ratio of developing agent concentration to bromide ion concentration of between
60:1 to 0.5:1; and
(5) a pH of from 9 to 12; and wherein
(D) the camera speed color photographic element exhibits a sensitivity of at least
ISO 25.
