← Back to Patent Explorer
US4707434A Expired / Lapsed US ⏱️ 0.0 years remaining

Color image forming method comprising processing with a bleach-fixing solution

Assignee: Konica Minolta Inc
•
Filing: 1985-08-14
•
Granted: 1987-11-17
•
Expires: 2005-08-14
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Disclosed is a color forming method which comprises subjecting a light-sensitive silver halide color photographic material having a photographic constituent layer comprising blue-sensitive, green-sensitive and red-sensitive silver halide emulsion layers on a support and having a total thickness of the photographic constituent layer of 25 μm or less to imagewise exposure, then carrying out color developing processing of the exposed material in the presence of a dye forming coupler and processing the developed image with a bleach-fixing solution. The color forming method of the present invention enables rapid processing of a high sensitivity color light-sensitive material.

Inventors

  • 👤 Shigeharu Koboshi
  • 👤 Moeko Higuchi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 14:39
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/42; G03C7/3022

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 104 words
A color image forming method, which comprises subjecting a light-sensitive silver halide color photographic material having a photographic constituent layer comprising blue-sensitive, green-sensitive and red-sensitive silver halide emulsion layers and a black colloid silver halation preventive layer on a support and having a total thickness of the photographic constituent layer which is effective for photographic performance of 25 μm or less to imagewise exposure, then carrying out color developing processing of the exposed material in the presence of a dye forming complex and then carrying out bleach-fixing processing of the developed image with a bleach-fixing solution containing at least one organic acid ferric complex.
Claim 2
Dependent Claim 104 words
A color image forming method, which comprises subjecting a light-sensitive silver halide color photographic material having a photographic constituent layer comprising blue-sensitive, green-sensitive and red-sensitive silver halide emulsion layers and a black colloid silver halation preventive layer on a support and having a total thickness of the photographic constituent layer which is effective for photographic performance of 25 μm or less to imagewise exposure, then carrying out color developing processing of the exposed material in the presence of a dye forming complex and then carrying out bleach-fixing processing of the developed image with a bleach-fixing solution containing at least one organic acid ferric complex.
Claim 3
Dependent Claim 34 words
A color image forming method according to claim 1, wherein the silver halide emulsion layers contain silver halide grains containing 0.1 mole % or more of silver iodide in at least one layer thereof.
Claim 4
Dependent Claim 34 words
A color image forming method according to claim 1, wherein the organic acid ferric complex is one containing a free acid with a molecular weight of 280 or more as constituent of said complex.
Claim 5
Dependent Claim 34 words
A color image forming method according to claim 3, wherein the organic acid ferric complex is one containing a free acid with a molecular weight of 300 or more as constituent of said complex.
Claim 6
Dependent Claim 32 words
A color image forming method according to claim 1, further having the step of processing the bleach-fixing solution with a pre-processing solution having fixing ability immediately before processing with the bleach-fixing solution.
Claim 7
Dependent Claim 49 words
A color image forming method according to claim 1, wherein the bleach-fixing solution is provided in at least two tanks according to a cocurrent system, the former stage tank being supplemented with at least a fixing agent and the latter stage tank being supplemented with a bleaching agent, respectively.
Claim 8
Dependent Claim 36 words
A color image forming method according to claim 1, wherein the light-sensitive silver halide photographic material has a silver halide emulsion layer of which the binder film swelling speed T 1/2 is 25 sec. or less.
Claim 9
Dependent Claim 717 words
A color image forming method according to claim 7, wherein the bleach-fixing solution and/or the pre-processing solution contains a compound selected from those of the formulae (I)-(VII) shown below: ##STR15## wherein Q represents a group of atoms necessary for forming a hetero ring containing 1 or more N atom (including those having at least one 5- to 6-membered unsaturated ring fused thereto); A represents a group of the formulae: ##STR16## or a hetero ring residue with n 1 valence including those having at least one 5- to 6-membered unsaturated ring fused thereto; B represents an alkylene group having 1 to 6 carbon atoms; M represents a divalent metal atom; X and X' represent ═S, ═O or ═NR"; R" represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group, an aryl group, a hetero ring residue including those having at least one 5- to 6-membered unsaturated ring fused thereto or an amino group; Y represents ##STR17## Z represents a hydrogen atom, an alkali metal atom, an ammonium group, an amino group, a nitrogen containing hetero ring residue or ##STR18## Z' represents Z or an alkyl group; R 1 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group, an aryl group, a hetero ring residue including those having at least one 5- to 6-membered unsaturated ring fused thereto or an amino group; each of R 2 , R 3 , R 4 , R 5 , R and R' represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a hydroxy group, a carboxy group, an amino group, an acyl group having 1 to 3 carbon atoms, an aryl group, or an alkenyl group, with proviso that R 4 and R 5 may represent --B--SZ, and R and R', R 2 and R 3 , R 4 and R 5 , respectively, may be mutually cyclized to form a hetero ring residue including those having at least one 5- to 6-membered unsaturated ring fused thereto; R 6 and R 7 each represent a group of the formula: ##STR19## R 9 represents an alkyl group or --CH2) n .sbsb.8 SO 3 .sup.⊖ when R 8 is --CH2) n .sbsb.8 SO 3 .sup.⊖, l represents 0 or 1; G.sup.⊖ is an anion; m 1 to m 4 and n 1 to n 8 each represent integers of 1 to 6; m 5 represents an integer of 0 to 6; R 8 represents a hydrogen atom, an alkali metal atom, a group of the formula: ##STR20## or an alkyl group; Q' is the same as the above Q; D is a mere bonding linkage, an alkylene group having 1 to 8 carbon atoms or a vinylene group; q represents an integer of 1 to 10; the plural number of D may be either the same or different; the ring formed together with sulfur atoms may be fused further to a 5- to 6-membered unsaturated ring; X 1 represents --COOM', --OH, --SO 3 M', --CONH 2 , --SO 2 NH 2 , --NH 2 , --SH, --CN, --CO 2 R 16 , --SO 2 R 16 , --OR 16 , --NR 16 R 17 , --SR 16 , --SO 3 R 16 , --NHCOR 16 , --NHSO 2 R 16 , --COR 16 or --OSO 2 R 16 ; Y 1 represents a group of the formula: ##STR21## or a hydrogen atom; m' and n' each represent an integer of 1 to 10; R 11 , R 12 , R 14 , R 15 , R 17 , and R 18 each represent a hydrogen atom or a lower alkyl; R 13 represents a hydrogen atom, a lower alkyl group or a group of the formula: ##STR22## R 16 represents a lower alkyl group; R 19 represents --NR 20 R 21 , --OR 22 or --SR 22 , R 20 and R 21 each represent a hydrogen atom or a lower alkyl group; R 22 represents a group of atoms necessary for formation of a ring by linking to R 18 ; R 20 or R 21 may be linked to R 18 to form a ring; M' represents a hydrogen atom or a cation; said compounds of the formula (I)-(V) including enol derivatives and salts thereof.
Claim 10
Dependent Claim 16 words
A color image forming method according to claim 1, wherein said silver halide emulsion is core-shelled.
Claim 11
Dependent Claim 18 words
A color image forming method according to claim 8, wherein said compound is present in said bleach-fixing solution.
Claim 12
Dependent Claim 14 words
A color image forming method according to claim 10, wherein said compound is ##STR23##
Claim 13
Dependent Claim 25 words
A color image forming method according to claim 1, wherein the total thickness of said photographic constituent layer is from 8 μm to 25 μm.
Claim 14
Dependent Claim 21 words
A color image forming method according to claim 3, wherein said organic acid ferric complex is iron (III) ammonium ethylenediamine tetraacetate.

References Cited (Backward Citations)

US3893858A Cited
US4144068A Cited
GB2112706A Cited
EP0084637A2 Cited
US4508816A Cited
US4508817A Cited
US4524129A Cited
US4546070A Cited
US4554242A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-11-16 1991-05-18 1991-11-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-11-16 1995-05-18 1995-11-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-11-16 1999-05-18 1999-11-17 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag