US4876237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally-transferable fluorescent 7-aminocoumarins
Assignee: Eastman Kodak Co
•
Filing: 1988-08-31
•
Granted: 1989-10-24
•
Expires: 2008-08-31
Abstract
Abstract A donor element for thermal transfer comprising a support having on one side thereof a fluorescent 7-aminocoumarin compound dispersed in a polymeric binder, and on the other side thereof a slipping layer comprising a lubricant. In a preferred embodiment, the compound has the formula: <CHEM> wherein: each X and Y independently represents hydrogen; a substituted or unsubstituted alkyl or acyl group having from 1 to 10 carbon atoms; a substituted or unsubstituted aryl group having from 6 to 10 carbon atoms; or the atoms necessary to complete, along with the nitrogen to which it is attached, a 5- or 6-membered heterocyclic ring.
Inventors
- 👤 Gary W. Byers
- 👤 Derek D. Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:36
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/385; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
35 words
A donor element for thermal transfer comprising a support having on one side thereof a fluorescent 7-aminocoumarin compound dispersed in a polymeric binder, and on the other side thereof a slipping layer comprising a lubricant.
Claim 2
Dependent Claim
35 words
A donor element for thermal transfer comprising a support having on one side thereof a fluorescent 7-aminocoumarin compound dispersed in a polymeric binder, and on the other side thereof a slipping layer comprising a lubricant.
Claim 3
Dependent Claim
72 words
The element of claim 1 wherein said compound has the formula: ##STR34## wherein: each X and Y independently represents hydrogen; a substituted or unsubstituted alkyl or acyl group having from 1 to about 10 carbon atoms; a substituted or unsubstituted aryl group having from about 6 to about 10 carbon atoms; or the atoms necessary to complete, along with the nitrogen to which it is attached, a 5- or 6-membered heterocyclic ring.
Claim 4
Dependent Claim
12 words
The element of claim 2 wherein X and Y are each hydrogen.
Claim 5
Dependent Claim
12 words
The element of claim 2 wherein X and Y are each methyl.
Claim 6
Dependent Claim
12 words
The element of claim 2 wherein X and Y are each ethyl.
Claim 7
Dependent Claim
20 words
The element of claim 2 wherein X and Y each represent the atoms necessary to complete a 6-membered heterocyclic ring.
Claim 8
Dependent Claim
23 words
The element of claim 1 wherein said donor element comprises sequential repeating areas of magenta, yellow and cyan dye, and said fluorescent compound.
Claim 9
Dependent Claim
66 words
In a process of forming a transfer image comprising imagewise-heating a donor element comprising a support having on one side thereof a layer comprising a material dispersed in a polymeric binder, and on the other side thereof a slipping layer comprising a lubricant, and transferring an image to a receiving element to form said transfer image, the improvement wherein said material is a fluorescent 7-aminocoumarin compound.
Claim 10
Dependent Claim
66 words
In a process of forming a transfer image comprising imagewise-heating a donor element comprising a support having on one side thereof a layer comprising a material dispersed in a polymeric binder, and on the other side thereof a slipping layer comprising a lubricant, and transferring an image to a receiving element to form said transfer image, the improvement wherein said material is a fluorescent 7-aminocoumarin compound.
Claim 11
Dependent Claim
72 words
The process of claim 8 wherein said compound has the formula: ##STR35## wherein: each X and Y independently represents hydrogen; a substituted or unsubstituted alkyl or acyl group having from 1 to about 10 carbon atoms; a substituted or unsubstituted aryl group having from about 6 to about 10 carbon atoms; or the atoms necessary to complete, along with the nitrogen to which it is attached, a 5- or 6-membered heterocyclic ring.
Claim 12
Dependent Claim
25 words
The process of claim 9 wherein X and Y are each hydrogen, methyl, ethyl or represent the atoms necessary to complete a 6-membered heterocyclic ring.
Claim 13
Dependent Claim
50 words
The process of claim 8 wherein said support is poly(ethylene terephthalate) which is coated with sequential repeating areas of magenta, yellow and cyan dye, and said fluorescent compound, and said process steps are sequentially performed for each color to obtain a visible three-color dye transfer image and a fluorescent image.
Claim 14
Dependent Claim
87 words
In a thermal transfer assemblage comprising: (a) a donor element comprising a support having on one side thereof a layer comprising a material dispersed in a polymeric binder, and on the other side thereof a slipping layer comprising a lubricant, and (b) a receiving element comprising a support having thereon an image-receiving layer, said receiving element being in a superposed relationship with said donor element so that said material layer is in contact with said image-receiving layer, the improvement wherein said material is a fluorescent 7-aminocoumarin compound.
Claim 15
Dependent Claim
87 words
In a thermal transfer assemblage comprising: (a) a donor element comprising a support having on one side thereof a layer comprising a material dispersed in a polymeric binder, and on the other side thereof a slipping layer comprising a lubricant, and (b) a receiving element comprising a support having thereon an image-receiving layer, said receiving element being in a superposed relationship with said donor element so that said material layer is in contact with said image-receiving layer, the improvement wherein said material is a fluorescent 7-aminocoumarin compound.
Claim 16
Dependent Claim
72 words
The assemblage of claim 12 wherein said compound has the formula: ##STR36## wherein: each X and Y independently represents hydrogen; a substituted or unsubstituted alkyl or acyl group having from 1 to about 10 carbon atoms; a substituted or unsubstituted aryl group having from about 6 to about 10 carbon atoms; or the atoms necessary to complete, along with the nitrogen to which it is attached, a 5- or 6-membered heterocyclic ring.
Claim 17
Dependent Claim
25 words
The assemblage of claim 13 wherein X and Y are each hydrogen, methyl, ethyl or represent the atoms necessary to complete a 6-membered heterocyclic ring.
Claim 18
Dependent Claim
32 words
The assemblage of claim 12 wherein said support of said donor element is poly(ethylene terephthalate) which is coated with sequential repeating areas of magenta, yellow and cyan dye, and said fluorescent compound.
References Cited (Backward Citations)
US4627997A
Cited
JPS60179295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-23 | 1993-04-24 | 1993-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-23 | 1997-04-24 | 1997-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-23 | 2001-04-24 | 2001-10-24 | $7700.00 | Window Closed / Lapsed |