Patent EP0231870A2 successfully refreshed from Google Patents.
EP0231870A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method for color image formation
Assignee: Fujifilm Holdings Corp
•
Filing: 1987-01-28
•
Granted: —
•
Expires: 2007-01-28
Abstract
Abstract A method of color image formation is disclosed, comprising imagewise exposing a color photographic light-sensitive material comprising a reflective support having provided thereon at least one light-sensitive layer containing a color coupler capable of forming a color image upon coupling with an oxidation product of an aromatic primary amine developing agent and a silver halide emulsion, and processing the exposed light-sensitive material with a color developing solution containing substntially no benzyl alcohol within a development time of 2 minutes and 30 seconds, wherein said processing is carried out in the presence of at least one compound represented by formula wherein R¹, R², R³, and R⁴ each represents a hydrogen atom, a hydroxyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, an acyl group, or a sulfonyl group; or R¹ and R², or R³ and R⁴ together form a ring; X represents a subsituted or unsubstituted lower alkylene group; and n represents an integer of from l to 4. Disadvantages due to use of benzyl alcohol can be eliminated, and reduction in color density noted when color development processing is conducted over a short time without using benzyl alcohol can be prevented.
Inventors
- 👤 Kokichi Fuji Photo Film Co. Ltd. Waki
- 👤 Shigeo Fuji Photo Film Co. Ltd. Hirano
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 14:38
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/392; G03C7/39208; G03C7/39224; G03C7/407; G03C7/413
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
168 words
A method for color image formation comprising imagewise exposing a color photographic light-sensitive material comprising a reflective support having provided thereon at least one light-sensitive layer containing a color coupler capable of forming a color image upon coupling with an oxidation product of an aromatic primary amine developing agent and a silver halide emulsion, and processing the exposed light-sensitive material with a color developing solution containing substantially no benzyl alcohol within a development time of 2 minutes and 30 seconds, wherein said processing is carried out in the presence of at least one compound represented by formula (I) wherein R¹, R², R³, and R⁴ each represents a hydrogen atom, a hydroxyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, an acyl group, or a sulfonyl group; or R¹ and R², or R³ and R⁴ together form a ring; X represents a substituted or unsubstituted lower alkylene group; and n represents an integer of from l to 4.
Claim 2
Independent Claim
168 words
A method for color image formation comprising imagewise exposing a color photographic light-sensitive material comprising a reflective support having provided thereon at least one light-sensitive layer containing a color coupler capable of forming a color image upon coupling with an oxidation product of an aromatic primary amine developing agent and a silver halide emulsion, and processing the exposed light-sensitive material with a color developing solution containing substantially no benzyl alcohol within a development time of 2 minutes and 30 seconds, wherein said processing is carried out in the presence of at least one compound represented by formula (I) wherein R¹, R², R³, and R⁴ each represents a hydrogen atom, a hydroxyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, an acyl group, or a sulfonyl group; or R¹ and R², or R³ and R⁴ together form a ring; X represents a substituted or unsubstituted lower alkylene group; and n represents an integer of from l to 4.
Claim 3
Independent Claim
36 words
A method as in claim l, wherein R¹, R², R³, and R⁴ each represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted alkynyl group.
Claim 4
Dependent Claim
24 words
A method as in claim 2, wherein R¹, R², R³, and R⁴ each represents a hydrogen atom, a methyl group, or an ethyl group.
Claim 5
Dependent Claim
17 words
A method as in claim 3, wherein R¹, R², R³, and R⁴ each represents a hydrogen atom.
Claim 6
Independent Claim
12 words
A method as in claim l, wherein n is l or 2.
Claim 7
Independent Claim
27 words
A method as in claim l, wherein said compound is present in at least one of a layer of the light-sensitive material and a color developing solution.
Claim 8
Dependent Claim
31 words
A method as in claim 6, wherein said compound is present in a color developing solution in an amount of from l × l0⁻⁵ to 5 × l0⁻² mol per liter.
Claim 9
Dependent Claim
31 words
A method as in claim 7, wherein said compound is present in a color developing solution in an amount of from l × l0⁻⁴ to l × l0⁻² mol per liter.
Claim 10
Dependent Claim
31 words
A method as in claim 6, wherein said compound is present in a layer of the light-sensitive material in an amount of from 5 × l0⁻⁷ to 5 × l0⁻² mol/m².
Claim 11
Dependent Claim
32 words
l0. A method as in claim 9, wherein said compound is present in a layer of the light-sensitive materal in an amount of from 5 × l0⁻⁶ to 5 × l0⁻³ mol/m².
Claim 12
Independent Claim
24 words
A method as in claim l, wherein said alkyl group as represented by R¹, R², R³, or R⁴ has l to 6 carbon atoms.
Claim 13
Independent Claim
24 words
A method as in claim l, wherein said alkenyl group as represented by R¹, R², R³, or R⁴ has 2 to 6 carbon atoms.
Claim 14
Independent Claim
24 words
A method as in claim l, wherein said alkynyl group as represented by R¹, R², R³, or R⁴ has 2 to 6 carbon atoms.
Claim 15
Independent Claim
39 words
A method as in claim l, wherein said substituted alkyl, alkenyl and alkynyl groups have a substituent selected from the group consisting of an alkoxy group, a hydroxyl group, an amino group, a carboxyl group and a sulfo group.
Claim 16
Independent Claim
24 words
A method as in claim l, wherein said acyl group as represented by R¹, R², R³, or R⁴ has l to l0 carbon atoms.
Claim 17
Independent Claim
25 words
A method as in claim l, wherein said ring formed by R¹ and R², or R³ and R⁴ is a saturated 5- or 6-membered ring.
Claim 18
Independent Claim
30 words
A method as in claim l6, wherein said saturated 5- or 6-membered ring is selected from the group consisting of a pyrrolidine ring, a perhydropyridine ring and a morpholine ring.
Claim 19
Independent Claim
21 words
A method as in claim l, wherein said color developing solution does not contain more than 0.5 ml/liter of benzyl alcohol.
Claim 20
Independent Claim
15 words
A method as in claim l8, wherein said color developing solution contains no benzyl alcohol.
Claim 21
Independent Claim
37 words
A method as in claim l, wherein said light-sensitive layer contains a mono-dispersed emulsion of silver halide having a ratio of a statistical standard deviation (s) to a mean grain size ( ) of 0.2/l or less.
Claim 22
Dependent Claim
15 words
2l. A method as in claim 20, wherein said ratio s/ is 0.l5/l or less.
Claim 23
Independent Claim
25 words
A method as in claim l, wherein said light-sensitive layer contains an emulsion of silver chlorobromide containing from 20 to 98 mol% of silver bromide.
Claim 24
Independent Claim
27 words
A method as in claim l, wherein said light-sensitive layer contains an emulsion of silver chloride or silver chlorobromide containing 90 mol% or more of silver chloride.
Claim 25
Dependent Claim
27 words
A method as in claim 23, wherein said light-sensitive layer contains an emulsion of silver chloride or silver chlorobromide containing 95 mol% or more of silver chloride.
Claim 26
Independent Claim
23 words
A method as in claim l, wherein said light-sensitive layer contains an emulsion of silver halide having a cubic or tetradecahedral crystal form.
Claim 27
Independent Claim
31 words
A method as in claim l, wherein said light-sensitive layer contains an emulsion of silver halide capable of predominantly forming a latent image on the surface thereof upon exposure to light.
Claim 28
Independent Claim
24 words
A method as in claim l, wherein said development time is within the range of from l minute to 2 minutes and l0 seconds.
Claim 29
Independent Claim
27 words
A method as in claim l, wherein said color developing solution contains an aromatic primary amine developing agent selected from the group consisting of 3-methyl-4-amino-N-ethyl-N-β-methanesulfonamidoethylaniline and 3-methyl-4-amino-N-ethyl-N-β-hydroxylethylaniline.
Claim 30
Dependent Claim
15 words
A method as in claim 28, wherein said aromatic primary amine developing agent is 3-methyl-4-amino-N-ethyl-N-β-methanesulfonamidoethylaniline.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.