US4572893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic resin-coated paper
Assignee: Fujifilm Holdings Corp
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Filing: 1982-10-27
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Granted: 1986-02-25
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Expires: 2002-10-27
Abstract
Abstract Photographic resin-coated paper comprising a paper sheet and a polyolefin resin layer coated over at least one surface of the paper sheet, in which the polyolefin resin contains titanium dioxide powder coated with an alcohol having 2-18 carbon atoms and 2-4 hydroxyl groups, and the surface of the polyolefin resin layer has been activated by corona discharge or flame.
Inventors
- 👤 Yasuzi Asao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:34
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/775; G03C1/79; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/2438
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
112 words
A photographic paper comprising a paper sheet, a polyolefin resin layer coated over at least one surface of the paper sheet, and a photographic emulsion superposed on the resin layer, said polyolefin resin containing titanium dioxide powder coated with an alcohol having 2 to 6 carbon atoms and 2 and 4 hydroxyl groups in an amount of 0.01 to 10 percent by weight of the titanium dioxide powder, the titanium dioxide powder being contained in an amount of 1 to 40 percent by weight of polyolefin resin layer, and the surface of the polyolefin resin layer on which the photographic emulsion layer is superposed has been activated by corona discharge or flame.
Claim 2
Dependent Claim
112 words
A photographic paper comprising a paper sheet, a polyolefin resin layer coated over at least one surface of the paper sheet, and a photographic emulsion superposed on the resin layer, said polyolefin resin containing titanium dioxide powder coated with an alcohol having 2 to 6 carbon atoms and 2 and 4 hydroxyl groups in an amount of 0.01 to 10 percent by weight of the titanium dioxide powder, the titanium dioxide powder being contained in an amount of 1 to 40 percent by weight of polyolefin resin layer, and the surface of the polyolefin resin layer on which the photographic emulsion layer is superposed has been activated by corona discharge or flame.
Claim 3
Dependent Claim
19 words
The photographic paper as claimed in claim 1 in which the alcohol contains 2-6 carbon atoms 2-4 methylol groups.
Claim 4
Dependent Claim
16 words
The photographic paper as claimed in claim 1 in which the alcohol contains 3 methylol groups.
Claim 5
Dependent Claim
14 words
The photographic paper as claimed in claim 1 in which the alcohol is trimethylolethane.
Claim 6
Dependent Claim
36 words
The photographic paper as claimed in claim 1 in which the alcohol is coated over the titanium dioxide powder in the amount of about 0.1 to about 1.5 percent by weight of the titanium dioxide powder.
Claim 7
Dependent Claim
26 words
The photographic paper as claimed in claim 1 in which the titanium dioxide powder is coated with an inorganic material prior to coating with the alcohol.
Claim 8
Dependent Claim
17 words
The photographic paper as claimed in claim 1 in which the inorganic material is silica or alumina.
Claim 9
Dependent Claim
17 words
The photographic paper as claimed in claim 1 in which the polyolefin resin is a polyethylene resin.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-02-24 | 1989-08-26 | 1990-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-24 | 1993-08-26 | 1994-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-24 | 1997-08-26 | 1998-02-25 | $7700.00 | Window Closed / Lapsed |