US4868097A
Expired / Lapsed
US
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Heat development dye image forming method with surface active agents
Assignee: Fujifilm Holdings Corp
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Filing: 1988-04-25
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Granted: 1989-09-19
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Expires: 2008-04-25
Abstract
Abstract A color image is formed by imagewise exposing a photosensitive material comprising at least (a) a photosensitive silver halide, (b) a binder, (c) a dye-providing substance which forms or releases a diffusible dye in response or counter-response to the reduction of the silver halide into silver at elevated temperatures, and (d) a specific-surface-active agent on a support, and heat developing the photosensitive material to form an image.
Inventors
- 👤 Yasuo Aotsuka
- 👤 Masatoshi Kato
- 👤 Masakazu Yoneyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:47
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/40; G03C8/4013; G03C8/408
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
201 words
A method for forming an image, comprising the steps of: imagewise exposing a heat developable photosensitive material comprising on a support at least (a) a photosensitive silver halide, (b) a binder, (c) a dye-providing substance which forms or releases a diffusible dye in response or counter-response to the reduction of the silver halide into silver at elevated temperatures, and (d) an anionic surfactant of formula (I): [X--(L).sub.m --].sub.k --(B).sub.n --Y (I) wherein X is a monovalent group containing a polyethylene oxide chain, L is a divalent linking group, Y is a water-soluble group, m is equal to 0 or 1, k is a positive integer having a value of at least 1, B is a group having a valence of (k+1), and n is equal to 0 or 1, or a compound of formula (II): ##STR13## wherein R 1 is hydrogen or a hydrocarbon residue, R 2 is a hydrocarbon residue, r is a positive integer having a value of from 5 to 200, and s is 0 or a positive integer having a value of from 1 to 7, and during or after the imagewise exposure of the photosensitive material, heating the heat developable photosensitive material to form an image.
Claim 2
Independent Claim
201 words
A method for forming an image, comprising the steps of: imagewise exposing a heat developable photosensitive material comprising on a support at least (a) a photosensitive silver halide, (b) a binder, (c) a dye-providing substance which forms or releases a diffusible dye in response or counter-response to the reduction of the silver halide into silver at elevated temperatures, and (d) an anionic surfactant of formula (I): [X--(L).sub.m --].sub.k --(B).sub.n --Y (I) wherein X is a monovalent group containing a polyethylene oxide chain, L is a divalent linking group, Y is a water-soluble group, m is equal to 0 or 1, k is a positive integer having a value of at least 1, B is a group having a valence of (k+1), and n is equal to 0 or 1, or a compound of formula (II): ##STR13## wherein R 1 is hydrogen or a hydrocarbon residue, R 2 is a hydrocarbon residue, r is a positive integer having a value of from 5 to 200, and s is 0 or a positive integer having a value of from 1 to 7, and during or after the imagewise exposure of the photosensitive material, heating the heat developable photosensitive material to form an image.
Claim 3
Dependent Claim
20 words
The image forming method of claim 1 wherein the heat developable photosensitive material is heated in the presence of water.
Claim 4
Dependent Claim
27 words
The image forming method of claim 1 wherein the heat developable photosensitive material is heated in the presence of water and a base and/or a base precursor.
Claim 5
Dependent Claim
20 words
The image forming method of claim 1 wherein the heat developable photosensitive material contains an emulsion of the dye-providing substance.
Claim 6
Dependent Claim
25 words
The image forming method of claim 1 wherein a reducing agent is added to the heat developable photosensitive material in combination with the dye-providing substance.
Claim 7
Dependent Claim
37 words
The image forming method of claim 3 wherein the base precursor comprises a combination of a substantially water-insoluble metal compound and a complexing compound capable of complexing reaction with a metal ion of the water-insoluble metal compound.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-18 | 1993-03-20 | 1993-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-18 | 1997-03-20 | 1997-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-18 | 2001-03-20 | 2001-09-19 | $7700.00 | Window Closed / Lapsed |