Patent US4695286A successfully refreshed from Google Patents.
US4695286A
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US
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High molecular weight polycarbonate receiving layer used in thermal dye transfer
Assignee: Eastman Kodak Co
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Filing: 1986-09-23
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Granted: 1987-09-22
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Expires: 2006-09-23
Abstract
Abstract A dye-receiving element for thermal dye transfer comprises a support having thereon a dye image-receiving layer comprising a polycarbonate, such as a bisphenol A polycarbonate, having a number average molecular weight of at least about 25,000. Use of this material reduces an undesirable relief image which otherwise tends to be obtained.
Inventors
- 👤 Noel R. Vanier
- 👤 Kin K. Lum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:55
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/5263; B41M5/5272; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10S430/00; Y10S430/146; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31786
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
34 words
In a dye-receiving element for thermal dye transfer comprising a support having thereon a polycarbonate dye image-receiving layer, the improvement wherein said polycarbonate has a number average molecular weight of at least about 25,000.
Claim 2
Dependent Claim
34 words
In a dye-receiving element for thermal dye transfer comprising a support having thereon a polycarbonate dye image-receiving layer, the improvement wherein said polycarbonate has a number average molecular weight of at least about 25,000.
Claim 3
Dependent Claim
13 words
The element of claim 1 wherein said polycarbonate is a bisphenol A polycarbonate.
Claim 4
Dependent Claim
26 words
The element of claim 2 wherein said bisphenol A polycarbonate comprises recurring units having the formula ##STR5## wherein n is from about 100 to about 500.
Claim 5
Dependent Claim
17 words
The element of claim 1 wherein said support is poly(ethylene terephthalate) having a white pigment incorporated therein.
Claim 6
Dependent Claim
66 words
In a process of forming a dye transfer image comprising imagewise-heating a dye-donor element comprising a support having thereon a dye layer and transferring a dye image to a dye-receiving element to form said dye transfer image, said dye-receiving element comprising a support having thereon a polycarbonate dye image-receiving layer, the improvement wherein said polycarbonate has a number average molecular weight of at least about 25,000.
Claim 7
Dependent Claim
66 words
In a process of forming a dye transfer image comprising imagewise-heating a dye-donor element comprising a support having thereon a dye layer and transferring a dye image to a dye-receiving element to form said dye transfer image, said dye-receiving element comprising a support having thereon a polycarbonate dye image-receiving layer, the improvement wherein said polycarbonate has a number average molecular weight of at least about 25,000.
Claim 8
Dependent Claim
13 words
The process of claim 5 wherein said polycarbonate is a bisphenol A polycarbonate.
Claim 9
Dependent Claim
26 words
The process of claim 6 wherein said bisphenol A polycarbonate comprises recurring units having the formula ##STR6## wherein n is from about 100 to about 500.
Claim 10
Dependent Claim
21 words
The process of claim 5 wherein said support of said dye-receiving element is poly(ethylene terephthalate) having a white pigment incorporated therein.
Claim 11
Dependent Claim
45 words
The process of claim 5 wherein said support for the dye-honor element comprises poly(ethylene terephthalate) which is coated with sequential repeating areas of cyan, magenta and yellow dye, and said process steps are sequentially performed for each color to obtain a three-color dye transfer image.
Claim 12
Dependent Claim
75 words
In a thermal dye transfer assemblage comprising: (a) a dye-donor element comprising a support having thereon a dye layer, and (b) a dye-receiving element comprising a support having thereon a polycarbonate dye image-receiving layer, said dye-receiving element being in a superposed relationship with said dye-donor element so that said dye layer is in contact with said dye image-receiving layer, the improvement wherein said polycarbonate has a number average molecular weight of at least about 25,000.
Claim 13
Dependent Claim
75 words
In a thermal dye transfer assemblage comprising: (a) a dye-donor element comprising a support having thereon a dye layer, and (b) a dye-receiving element comprising a support having thereon a polycarbonate dye image-receiving layer, said dye-receiving element being in a superposed relationship with said dye-donor element so that said dye layer is in contact with said dye image-receiving layer, the improvement wherein said polycarbonate has a number average molecular weight of at least about 25,000.
Claim 14
Dependent Claim
13 words
The assemblage of claim 10 wherein said polycarbonate is a bisphenol A polycarbonate.
Claim 15
Dependent Claim
26 words
The assemblage of claim 11 wherein said bisphenol A polycarbonate comprises recurring units having the formula ##STR7## wherein n is from about 100 to about 500.
Claim 16
Dependent Claim
21 words
The assemblage of claim 10 wherein said support of said dye-receiving element is poly(ethylene terephthalate) having a white pigment incorporated therein.
References Cited (Backward Citations)
US4465728A
Cited
JPS6019138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-09-21 | 1991-03-23 | 1991-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-21 | 1995-03-23 | 1995-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-21 | 1999-03-23 | 1999-09-22 | $7700.00 | Window Closed / Lapsed |