US4575465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink jet transparency
Assignee: Polaroid Corp
•
Filing: 1984-12-13
•
Granted: 1986-03-11
•
Expires: 2004-12-13
Abstract
Abstract An ink jet recording sheet comprising a transparent support carrying a layer comprising up to 50% by weight of vinylpyridine/vinylbenzyl quaternary salt copolymer and a hydrophilic polymer selected from the group consisting of gelatin, polyvinyl alcohol and hydroxypropyl cellulose and mixtures thereof.
Inventors
- 👤 Michael S. Viola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:46
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/5245; B41M5/5236; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31768; Y10T428/31786; Y10T428/3179; Y10T428/31797; Y10T428/31855; Y10T428/31935; Y10T428/31971
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
43 words
A transparent ink jet recording sheet comprising a transparent support carrying a layer comprising up to 50% by weight of a vinylpyridine/vinylbenzyl quaternary salt copolymer and a hydrophilic polymer selected from the group consisting of gelatin, polyvinyl alcohol, hydroxypropyl cellulose and mixtures thereof.
Claim 2
Dependent Claim
43 words
A transparent ink jet recording sheet comprising a transparent support carrying a layer comprising up to 50% by weight of a vinylpyridine/vinylbenzyl quaternary salt copolymer and a hydrophilic polymer selected from the group consisting of gelatin, polyvinyl alcohol, hydroxypropyl cellulose and mixtures thereof.
Claim 3
Dependent Claim
10 words
The product of claim 1 wherein said vinylpyridine is 4-vinylpyridine.
Claim 4
Dependent Claim
15 words
The product of claim 1 wherein said vinylbenzyl quaternary salt is trimethyl vinylbenzyl ammonium chloride.
Claim 5
Dependent Claim
11 words
The product of claim 1 wherein said hydrophilic polymer is gelatin.
Claim 6
Dependent Claim
12 words
The product of claim 1 wherein said hydrophilic polymer is polyvinyl alcohol.
Claim 7
Dependent Claim
12 words
The product of claim 1 wherein said hydrophilic polymer is hydroxypropyl cellulose.
Claim 8
Dependent Claim
12 words
The product of claim 5 wherein said polyvinyl alcohol is fully hydrolyzed.
Claim 9
Dependent Claim
17 words
The product of claim 1 wherein said copolymer and said hydrophilic polymer are each 50% by weight.
Claim 10
Dependent Claim
19 words
The product of claim 1 wherein said copolymer and said hydrophilic polymer are 25% and 75%, by weight, respectively.
Claim 11
Independent Claim
68 words
The method of ink jet printing which comprises contacting a transparent recording sheet with at least one stream of droplets generated from an ink jet printer, wherein said recording sheet comprises a transparent support carrying a layer comprising up to 50% by weight of a vinylpyridine/vinylbenzyl quaternary salt copolymer and a hydrophilic polymer selected from the group consisting of gelatin, polyvinyl alcohol, and hydroxypropyl alcohol and mixtures thereof.
Claim 12
Independent Claim
68 words
The method of ink jet printing which comprises contacting a transparent recording sheet with at least one stream of droplets generated from an ink jet printer, wherein said recording sheet comprises a transparent support carrying a layer comprising up to 50% by weight of a vinylpyridine/vinylbenzyl quaternary salt copolymer and a hydrophilic polymer selected from the group consisting of gelatin, polyvinyl alcohol, and hydroxypropyl alcohol and mixtures thereof.
References Cited (Backward Citations)
US4308542A
Cited
US4460637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-10 | 1989-09-09 | 1990-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-10 | 1993-09-09 | 1994-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-10 | 1997-09-09 | 1998-03-11 | $7700.00 | Window Closed / Lapsed |