US4418141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic light-sensitive materials
Assignee: Fujifilm Holdings Corp
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Filing: 1981-12-22
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Granted: 1983-11-29
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Expires: 2001-12-22
Abstract
Abstract A photographic light-sensitive material having improved antistatic properties is described, comprising a plastic support, at least one photographic light-sensitive emulsion layer on one side of the support, and an antistatic layer on the other side of the support, wherein the antistatic layer contains fine particles of at least one crystalline metal oxide selected from ZnO, TiO 2 , SnO 2 , Al 2 O 3 , In 2 O 3 , SiO 2 , MgO, BaO, and MoO 3 , or a composite oxide thereof.
Inventors
- 👤 Hideo Kawaguchi
- 👤 Takayuki Inayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:01
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/853; Y; Y10; Y10S; Y10S430/00; Y10S430/162
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
126 words
A photographic light-sensitive material comprising a plastic support, at least one photographic light-sensitive emulsion layer on one side of the support, and an antistatic layer on the other side of the support, wherein the antistatic layer comprises a binder having dispersed therein fine particles of at least one crystalline metal oxide selected from the group consisting of ZnO, TiO 2 , SnO 2 , Al 2 O 3 , In 2 O 3 , SiO 2 , MgO, BaO, and MoO 3 , or a composite oxide thereof, said crystalline metal oxide or composite thereof having a volume resistivity of 10 7 Ω.cm or less, a hydrophobic layer being provided on the antistatic layer, said antistatic layer being between said hydrophobic polymer layer and said support.
Claim 2
Dependent Claim
126 words
A photographic light-sensitive material comprising a plastic support, at least one photographic light-sensitive emulsion layer on one side of the support, and an antistatic layer on the other side of the support, wherein the antistatic layer comprises a binder having dispersed therein fine particles of at least one crystalline metal oxide selected from the group consisting of ZnO, TiO 2 , SnO 2 , Al 2 O 3 , In 2 O 3 , SiO 2 , MgO, BaO, and MoO 3 , or a composite oxide thereof, said crystalline metal oxide or composite thereof having a volume resistivity of 10 7 Ω.cm or less, a hydrophobic layer being provided on the antistatic layer, said antistatic layer being between said hydrophobic polymer layer and said support.
Claim 3
Dependent Claim
18 words
A photographic light-sensitive material as in claim 1, wherein the metal oxide contains a dopant or oxygen defects.
Claim 4
Dependent Claim
15 words
A photographic light-sensitive material as in claim 2, wherein the metal oxide contains a dopant.
Claim 5
Dependent Claim
51 words
A photographic light-sensitive material as in claim 3, wherein said metal oxide is ZnO and said dopant is Al or In, said metal oxide is TiO 2 and said dopant is Nb or Ta or said metal oxide is SnO 2 and said dopant is Sb, Nb, or a hologen element.
Claim 6
Dependent Claim
22 words
A photographic light-sensitive material as in claim 3 or 4, wherein the amount of dopant is from 0.01 to 30 mol %.
Claim 7
Dependent Claim
22 words
A photogrphic light-sensitive material as in claim 3 or 4, wherein the amount of dopant is from 0.1 to 10 mol %.
Claim 8
Dependent Claim
31 words
A photographic light-sensitive material as in claim 1, 2, 3, or 4, wherein the amount of metal oxide particles in the antistatic layer is from 0.05 to 20 g/m 2 .
Claim 9
Dependent Claim
31 words
A photographic light-sensitive material as in claim 1, 2, 3, or 4, wherein the amount of metal oxide particles in the antistatic layer is from 0.1 to 10 g/m 2 .
Claim 10
Dependent Claim
27 words
A photographic light-sensitive material as in claim 5, wherein the amount of metal oxide particles in the antistatic layer is from 0.05 to 20 g/m 2 .
Claim 11
Dependent Claim
27 words
A photographic light-sensitive material as in claim 5, wherein the amount of metal oxide particles in the antistatic layer is from 0.1 to 10 g/m 2 .
Claim 12
Dependent Claim
24 words
A photographic light-sensitive material as in claim 6, wherein the amount of the metal oxide particles is from 0.05 to 20 g/m 2 .
Claim 13
Dependent Claim
27 words
A photographic light-sensitive material as in claim 6, wherein the amount of metal oxide particles in the antistatic layer is from 0.1 to 10 g/m 2 .
Claim 14
Dependent Claim
18 words
The photographic light-sensitive material as in claim 1 wherein said hydrophobic polymer layer is an outer surface layer.
Claim 15
Dependent Claim
27 words
The photographic light-sensitive material as in claim 1 wherein the amount of the hydrophobic polymer coated is about 0.05 to 1 g/m 2 based on dry weight.
Claim 16
Dependent Claim
39 words
The photographic light-sensitive material as claimed in claim 1 wherein the hydrophobic polymer layer is provided by coating a hydrophobic polymer in the form of a solution in an organic solvent or in the form of an aqueous latex.
Claim 17
Dependent Claim
27 words
The photographic light-sensitive material as claimed in claim 1 wherein the hydrophobic polymer is a cellulose ester, a vinyl-based polymer, an organic solvent-soluble polyamide or a polyester.
References Cited (Backward Citations)
US3245833A
Cited
US3503743A
Cited
US3874879A
Cited
US4078935A
Cited
US4264707A
Cited
US4267266A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-28 | 1987-05-30 | 1987-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-28 | 1991-05-30 | 1991-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-28 | 1995-05-30 | 1995-11-29 | $7700.00 | Window Closed / Lapsed |