Patent US4956230A successfully refreshed from Google Patents.
US4956230A
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US
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Ink receptive transparency sheet
Assignee: 3M Co
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Filing: 1988-02-02
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Granted: 1990-09-11
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Expires: 2008-02-02
Abstract
Abstract Transparent sheet for use with ink jet printers and pen plotters which utilize hydrophilic solvent-based inks. The sheet comprises a transparent backing bearing on at least one major surface thereof a transparent coating formed of a blend of at least one hydrophilic polymer containing a carbonylamido functional group and at least one hydrophobic polymer substantially free of acidic functional groups, hydroxyl groups, >NH groups and --NH 2 groups.
Inventors
- 👤 Donald W. Edwards
- 👤 Armin J. Paff
- 👤 Daniel C. Duan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:06
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/502; B41M5/508; B41M5/5236; B41M5/5254; B41M5/5263; B41M5/5272; B41M5/529; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31533; Y10T428/31725; Y10T428/31855
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
139 words
Transparent sheet consisting of a polymeric backing bearing on at least one major surface thereof an ink receptive layer comprising a blend of at least one hydrophobic polymer substantially free of acidic functional groups, hydroxyl groups, >NH groups, and --NH 2 groups and at least one hydrophilic polymer containing carbonylamido groups, said carbonylamido groups selected from the group consisting of ##STR2## where R 1 and R 2 independently represent alkyl groups, or R 1 and R 2 together can be represented by (--CH 2 --) x where x is an integer from two to five, or R 2 can be hydrogen provided that it is bonded to a carbon atom, R 3 represents hydrogen or alkyl group having from one to six carbon atoms, and R 4 represents hydrogen or alkyl group, said layer capable of receiving aqueous-based inks.
Claim 2
Dependent Claim
139 words
Transparent sheet consisting of a polymeric backing bearing on at least one major surface thereof an ink receptive layer comprising a blend of at least one hydrophobic polymer substantially free of acidic functional groups, hydroxyl groups, >NH groups, and --NH 2 groups and at least one hydrophilic polymer containing carbonylamido groups, said carbonylamido groups selected from the group consisting of ##STR2## where R 1 and R 2 independently represent alkyl groups, or R 1 and R 2 together can be represented by (--CH 2 --) x where x is an integer from two to five, or R 2 can be hydrogen provided that it is bonded to a carbon atom, R 3 represents hydrogen or alkyl group having from one to six carbon atoms, and R 4 represents hydrogen or alkyl group, said layer capable of receiving aqueous-based inks.
Claim 3
Dependent Claim
13 words
The sheet of claim 1 wherein said backing is transmissive to visible light.
Claim 4
Dependent Claim
15 words
The sheet of claim 1 wherein R 1 contains from 1 to 8 carbon atoms.
Claim 5
Dependent Claim
18 words
The sheet of claim 3 wherein R 1 represents an alkyl group having 1 to 3 carbon atoms.
Claim 6
Dependent Claim
15 words
The sheet of claim 1 wherein R 2 contains from 1 to 8 carbon atoms.
Claim 7
Dependent Claim
18 words
The sheet of claim 5 wherein R 2 represents an alkyl group having 1 to 3 carbon atoms.
Claim 8
Dependent Claim
15 words
The sheet of claim 1 wherein R 4 contains from 1 to 8 carbon atoms.
Claim 9
Dependent Claim
18 words
The sheet of claim 7 wherein R 4 represents an alkyl group having 1 to 3 carbon atoms.
Claim 10
Dependent Claim
39 words
The sheet of claim 1 wherein said hydrophobic polymer is selected from the group consisting of polyesters, homopolymers and copolymers of vinyl chloride, polysulfone resins, polyacrylonitrile and copolymers thereof, poly(benzyl methacrylate), poly(phenyl methacrylate), poly(vinyl cinnamate), poly(vinylidene fluoride), and polycarbonate.
Claim 11
Dependent Claim
12 words
The sheet of claim 9 wherein said hydrophobic polymer is a polyester.
Claim 12
Dependent Claim
12 words
The sheet of claim 9 wherein said hydrophobic polymer is a polysulfone.
Claim 13
Dependent Claim
13 words
The sheet of claim 9 wherein said hydrophobic polymer is a poly(vinyl chloride).
Claim 14
Dependent Claim
30 words
The sheet of claim 1 wherein said hydrophilic polymer is selected from the group consisting of poly(N-vinyl pyrrolidone), poly(N,N-dimethyl acrylamide), poly(methyloxazoline), poly(ethyloxazoline), poly(N-vinyl valerolactam), poly(N-vinyl caprolactam), and poly(N-vinyl N-methyl acetamide).
Claim 15
Dependent Claim
12 words
The sheet of claim 13 wherein said hydrophilic polymer is poly(N-vinyl pyrrolidone).
Claim 16
Dependent Claim
39 words
The sheet of claim 1 wherein said hydrophilic polymer comprises from about 5 to about 99 parts by weight of the blend and said hydrophobic polymer comprises from about 95 to about 1 part by weight of the blend.
Claim 17
Dependent Claim
39 words
The sheet of claim 1 wherein said hydrophilic polymer comprises from about 40 to about 95 parts by weight of the blend and said hydrophobic polymer comprises from about 60 to about 5 parts by weight of the blend.
Claim 18
Dependent Claim
23 words
The sheet of claim 1 wherein said carbonylamido functional group comprises from about 20% to about 60% by weight of the hydrophilic polymer.
Claim 19
Dependent Claim
22 words
The sheet of claim 1 wherein said ink-receptive layer has a coating weight of no less than 0.2 grams per square foot.
Claim 20
Dependent Claim
23 words
The sheet of claim 1 wherein said ink-receptive layer has a coating weight less than or equal to 2.0 grams per square foot.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-09-10 | 1994-03-12 | 1994-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-10 | 1998-03-12 | 1998-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-10 | 2002-03-12 | 2002-09-11 | $7700.00 | Window Closed / Lapsed |