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Patent US4643964A successfully refreshed from Google Patents.
US4643964A
Expired / Lapsed
US
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Heat-developable light-sensitive material with electrically conductive layer
Assignee: Fujifilm Holdings Corp
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Filing: 1985-07-22
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Granted: 1987-02-17
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Expires: 2005-07-22
Abstract
Abstract A heat-developable light-sensitive material is described, comprising a support having thereon a heat-developable silver halide emulsion layer capable of being developed by heating and further comprising said same support or the other support having thereon an electrically conductive layer, wherein the electrically conductive layer comprises at least (1) a compound imparting electrical conductivity, (2) a compound having a melting point of 100° C. or more, and (3) a hydrophilic binder.
Inventors
- 👤 Satoru Sawada
- 👤 Hideki Naito
- 👤 Hiroshi Kitaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:12
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/263; G03C1/00; G03C1/494; G03C1/498; G03C1/49872
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
71 words
A heat-developable light-sensitive material comprising a support having thereon a heat-developable silver halide emulsion layer capable of being developed by heating and further comprising said same support or another support having thereon an electrically conductive layer, wherein the electrically condutive layer comprises at least (1) a compound imparting electrical conductivity, (2) a meltable compound having a melting point of from about 100° C. to 300° C., and (3) a hydrophilic binder.
Claim 2
Dependent Claim
71 words
A heat-developable light-sensitive material comprising a support having thereon a heat-developable silver halide emulsion layer capable of being developed by heating and further comprising said same support or another support having thereon an electrically conductive layer, wherein the electrically condutive layer comprises at least (1) a compound imparting electrical conductivity, (2) a meltable compound having a melting point of from about 100° C. to 300° C., and (3) a hydrophilic binder.
Claim 3
Dependent Claim
31 words
A heat-developable light-sensitive material as claimed in claim 1, wherein the initial volume resistance at room temperature of the electrically conductive layer is from 10 -4 to 10 4 Ω cm.
Claim 4
Dependent Claim
23 words
A heat-developable light-sensitive material as claimed in claim 1, wherein the compound imparting electrical conductivity in the electrically conductive layer is carbon black.
Claim 5
Dependent Claim
30 words
A heat-developable light-sensitive material as claimed in claim 1, wherein the compound imparting electrical conductivity and the hydrophilic binder in the electrically conductive layer is a hydrophilic electrically conductive polymer.
Claim 6
Dependent Claim
43 words
A heat-deveJopable light-sensitve material as claimed in claim 1, wherein the meltable compound having a melting point of about 100° C. to 300° C. remains stable without undergoing decomposition or sublimation up to a temperature range 20° C. higher than the melting point.
Claim 7
Dependent Claim
29 words
A heat-developable light-sensitive material as claimed in claim 5, wherein the meltable compound having a melting point of about 100° C. to 300° C. is sparingly soluble in water.
Claim 8
Dependent Claim
46 words
A heat-developable light-sensitive material as claimed in claim 1, wherein the (1) a compound imparting electrical conductivity, (2) a meltable compound having a melting point of about 100° C. to 300° C. and (3) a hydrophilic binder are all spearate constituents of the electrically conductive layer.
Claim 9
Dependent Claim
70 words
A heat-developable light-sensitive material as claimed in claim 7, wherein the (1) compound imparting electrical conductivity is from 10 to 90 wt % based on the total weight of the (1) compound imparting electrical conductivity and the (3) hydrophilic binder and wherein the amount of (2) the meltable compound having a melting point of about 100° C. to 300° C. is from 0.1 to 10 times that of the binder.
Claim 10
Dependent Claim
70 words
A heat-developable light-sensitive material as claimed in claim 7, wherein the (1) compound imparting electrical conductivity is from 15 to 85 wt % based on the total weight of the (1) compound imparting electrical conductivity and the (3) hydrophilic binder and wherein the amount of (2) the meltable compound having a melting point of about 100° C. to 300° C. is from 0.2 to 3 times that of the binder.
Claim 11
Dependent Claim
54 words
A heat-developable light-sensitive material as cliamed in claim 8, wherein (1) the compound imparting electrical conductivity is carbon black and the same is used in an amount of from 1 to about 50 g/m 2 and in an amount of from about 10 to 90 wt % based on the weight of the binder.
Claim 12
Dependent Claim
55 words
A heat-developable light-sensitive material as claimed in claim 9, wherein (1) the compound imparting electrical conductivity is carbon black and the same is used in an amount of from about 2 to about 20 g/m 2 and in an amount of from about 15 to 80 wt % based on the weight of the binder.
Claim 13
Dependent Claim
33 words
A heat-developable light-sensitive material as claimed in claim 1, wherein (2) the meltable compound having a melting point of about 100° C. to 300° C. also decomposes at about 100° C. or more.
Claim 14
Dependent Claim
33 words
A heat-developable light-sensitive material as claimed in claim 9, wherein (2) the meltable compound having a melting point of about 100° C. to 300° C. is selected from the group consisting of: ##STR8##
Claim 15
Dependent Claim
56 words
A heat-developable light-sensitive material as claimed in claim 9, wherein (2) the meltable compound having a melting point of about 100° C. to 300° C. is selected from the group consisting of p-bromoacetanilide, 4,4-bis(dimethylamino)benzophenone, 4-amino-2,6-dimenthylpyrimidine, adipic acid, p-chlorophenoxyacetic acid, 1,4-diazabicyclo[2,2,2]octane, 2,4-dichlorophenoxyacetic acid, 1,3-dicyanobenzene, 5,5-dimethylhydantoin, dimethyl terephthalate, 1,3-dipheynlguanidine, o-nitrobenzoic acid, 4-phenylphenol, α-tartaric acid, salicylamide and salicyclic acid.
Claim 16
Dependent Claim
27 words
A heat-developable light-sensitive material as claimed in claim 9, wherein the (2) meltable compound having a melting point of about 100° C. to 300° C. is propylurea.
Claim 17
Dependent Claim
27 words
A heat-developable light-sensitive material as claimed in claim 9, wherein the (2) meltable compound having a melting point of about 100° C. to 300° C. is phenylurea.
Claim 18
Dependent Claim
29 words
A heat-developable light-sensitive material as claimed in claim 9, wherein the (2) meltable compound having a melting point of about 100° C. to 300° C. is the compound: ##STR9##
Claim 19
Dependent Claim
23 words
A heat-developable light-sensitive material as claimed in claim 1, wherein the meltable compound has a melting point of from 100° to 200° C.
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) | 1990-02-16 | 1990-08-18 | 1991-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-16 | 1994-08-18 | 1995-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-16 | 1998-08-18 | 1999-02-17 | $7700.00 | Window Closed / Lapsed |