Color photographic image formation method

{
  "publication_number": "US5238789A",
  "country": "US",
  "kind": "A",
  "title": "Color photographic image formation method",
  "abstract": "A method for forming an image, comprising developing an imagewise exposed silver halide color photographic material comprising a support having thereon at least one blue sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, and at least one red-sensitive silver halide emulsion layer with a color developer containing at least one aromatic primary amine color developing agent, wherein the red-sensitive silver halide emulsion layer contains a high silver chloride silver halide emulsion having a silver bromide content of from 0.5 to 6 mol%, and the color developer contains from 3.5×10 -2 to 1.5×10 -1 mol/l of chloride ion and from 3.0×10 -5 to 1.0×10 -3 mol/l of bromide ion. The method provides an image having a high maximum density and a low minimum density at high sensitivity while markedly suppressing variations in photographic characteristics, particularly of minimum density, even in rapid and continuous processing.",
  "claims": [
    "1. A method for forming an image which comprises developing an imagewise exposed silver halide color photographic material comprising a support having thereon at least one blue-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, and at least one red-sensitive silver halide emulsion layer with a color developer containing at least one aromatic primary amine color developing agent, wherein said red-sensitive silver halide emulsion layer contains silver chlorobromide having not more than 1 mol% of silver iodide and having a silver bromide content of from 0.5 to 6 mol%, wherein said blue-sensitive silver halide emulsion layer and said green-sensitive silver halide emulsion layer each comprises a high silver chloride emulsion having a silver chloride content of at least 98 mol%, the total silver coverage of the photographic material is 0.80 g/m 2 or less and said color developer contains from 3.5×10 -2 to 1.5×10 -1 mol/l of chloride ions and from 5.0×10 -5 to 5.0×10 -4 mol/l of bromide ion.",
    "2. A method as claimed in claim 1, wherein said developer has a chloride ion content of from 4×10 -2 to 1 ×10 -1 mol/l.",
    "3. A method as claimed in claim 1, wherein said color developing includes replenishing said color developer at a rate of 20 to 150 ml of color developer per m 2 of said silver halide color photographic material.",
    "4. A method as claimed in claim 1, wherein the red-sensitive silver halide emulsion layer contains not more than 0.2 mol% silver iodide.",
    "5. A method as claimed in claim 1, wherein the silver halide emulsion is a monodispersed emulsion having a coefficient of variation of grain size of not more than 20%.",
    "6. A method as claimed in claim 1, wherein said color developer contains an organic preservative.",
    "7. A method as claimed in claim 6, wherein the organic preservative is selected from a hydroxylamine derivative and a hydrazine derivative.",
    "8. A method as claimed in claim 1, wherein the red-sensitive silver halide emulsion layer contains 0.5 to 2 mol% silver bromide.",
    "9. The method of claim 1, wherein the total silver coverage of the photographic material is 0.75 g/m 2 or less."
  ],
  "cpc": [
    "G03C 7/3022",
    "G03C 7/413"
  ],
  "assignees": [
    "FUJI PHOTO FILM CO LTD"
  ],
  "filing_date": "1991-12-09",
  "publication_date": "1993-08-24",
  "grant_date": "1993-08-24",
  "priority_date": "1988-10-03",
  "application_number": "US-80391791-A",
  "family_id": "27333809",
  "citations": [
    "JPS63106655A",
    "JPS63106665A",
    "US4801516A",
    "US4851326A",
    "US4853321A",
    "US4880728A"
  ]
}