Patent US1496358A successfully refreshed from Google Patents.
Patent US4503111A successfully refreshed from Google Patents.
US4503111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrophobic substrate with coating receptive to inks
Assignee: Xerox Corp
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Filing: 1983-05-09
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Granted: 1985-03-05
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Expires: 2003-05-09
Abstract
Abstract A recording material, comprising a hydrophobic substrate material with a polymeric coating, has excellent receptivity for inks that do not normally wet hydrophobic substrates. The substrate material is coated with a mixture of polyvinylpyrrolidone and a compatible matrix-forming polymer. The matrix-forming polymer is a material, such as gelatin or polyvinyl alcohol, that is swellable by water and insoluble at room temperature but soluble at elevated temperatures. A transparent base sheet, such as cellulose acetate or polyethylene terephthalate, can be coated with the mixture of polymers to provide a sheet material which can be used in ink jet printers and in pen-type graphics recorders, operating at normal speeds, to record large color-filled areas without puddling, running, or wetness and with high color density and excellent resolution.
Inventors
- 👤 Charles W. Jaeger
- 👤 Donald R. Titterington
- 👤 Le P. Hue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:13
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/5254; B41M5/0011; B41M5/0041; B41M5/0047; B41M5/0064; B41M5/502; B41M5/508; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/24868; Y10T428/24893; Y10T428/24901; Y10T428/31504; Y10T428/31725; Y10T428/31768; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
75 words
A transparent recording medium for ink jet printing, comprising a transparent support layer having a substantially hydrophobic surface with a transparent surface coating receptive to aqueous inks, said coating comprising a mixture of polyvinylpyrrolidone and a compatible matrix-forming hydrophilic polymer selected from the group consisting of gelatin and polyvinyl alcohol, the ratio of polyvinylpyrrolidone to matrix-forming polymer being in the range of 1:3 to 3:1, the polyvinylpyrrolidone having a molecular weight of at least 90,000.
Claim 2
Dependent Claim
75 words
A transparent recording medium for ink jet printing, comprising a transparent support layer having a substantially hydrophobic surface with a transparent surface coating receptive to aqueous inks, said coating comprising a mixture of polyvinylpyrrolidone and a compatible matrix-forming hydrophilic polymer selected from the group consisting of gelatin and polyvinyl alcohol, the ratio of polyvinylpyrrolidone to matrix-forming polymer being in the range of 1:3 to 3:1, the polyvinylpyrrolidone having a molecular weight of at least 90,000.
Claim 3
Dependent Claim
41 words
The recording medium of claim 1, wherein said support layer has opposed major surfaces, at least one of which is substantially hydrophobic, and both surfaces have a transparent surface coating comprising a mixture of polyvinylpyrrolidone and a compatible matrix-forming hydrophilic polymer.
Claim 4
Dependent Claim
25 words
The recording medium of claim 1, wherein the matrix-forming polymer is an essentially fully hydrolyzed polyvinyl alcohol having a molecular weight of less than 60,000.
Claim 5
Dependent Claim
16 words
The recording medium of claim 1, wherein the matrix-forming polymer is gelatin derived from pig skin.
Claim 6
Dependent Claim
83 words
A process for making an improved transparent ink jet recording medium, comprising the steps of providing a transparent support layer having a substantially hydrophobic surface, and applying a transparent, aqueous ink-receiving coating to said surface, said coating comprising a mixture of polyvinylpyrrolidone and a compatible matrix-forming hydrophilic polymer selected from the group consisting of gelatin and polyvinyl alcohol, the ratio of polyvinylpyrrolidone to matrix-forming polymer being in the range of 1:3 to 3:1, the polyvinylpyrrolidone having a molecular weight of at least 90,000.
Claim 7
Dependent Claim
83 words
A process for making an improved transparent ink jet recording medium, comprising the steps of providing a transparent support layer having a substantially hydrophobic surface, and applying a transparent, aqueous ink-receiving coating to said surface, said coating comprising a mixture of polyvinylpyrrolidone and a compatible matrix-forming hydrophilic polymer selected from the group consisting of gelatin and polyvinyl alcohol, the ratio of polyvinylpyrrolidone to matrix-forming polymer being in the range of 1:3 to 3:1, the polyvinylpyrrolidone having a molecular weight of at least 90,000.
Claim 8
Dependent Claim
36 words
The process of claim 5, comprising the further steps of applying a transparent, aqueous ink-receptive coating to the opposite surface of said substrate, said coating comprising a mixture of polypyrrolidone and a compatible matrix-forming hydrophilic polymer.
Claim 9
Dependent Claim
24 words
The process of claim 5, wherein the matrix-forming polymer is an essentially fully hydrolyzed polyvinyl alcohol having a molecular weight of less than 60,000.
Claim 10
Dependent Claim
15 words
The process of claim 5, wherein the matrix-forming polymer is gelatin derived from pig skin.
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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) | 1988-03-04 | 1988-09-03 | 1989-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-04 | 1992-09-03 | 1993-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-04 | 1996-09-03 | 1997-03-05 | $7700.00 | Window Closed / Lapsed |