Patent US4857503A successfully refreshed from Google Patents.
US4857503A
Expired / Lapsed
US
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Thermal dye transfer materials
Assignee: 3M Co
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Filing: 1988-05-13
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Granted: 1989-08-15
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Expires: 2008-05-13
Abstract
Abstract The use of eutectic combinations of a dye and a second compound (which may also be a dye) in a binder has been found to provide benefits to thermal dye transfer materials.
Inventors
- 👤 Susan K. Jongewaard
- 👤 Terrance P. Smith
- 👤 Krzysztof A. Zaklika
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:35
CPC Classifications
C; C09; C09B; C09B67/00; B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/385; B41M5/3858; B41M5/392; C09D; C09D5/00; C09D5/26; B41M5/3852; B41M5/3854; B41M5/388; B41M5/39; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24901
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
114 words
A thermal dye transfer element comprising a substrate having on one side thereof a layer of a polymeric binder having a mixture of at least two dyes therein, said dyes being capable of forming a eutectic composition and at least one pair of said dyes being present within said binder in a ratio which is between 0.25 and 4.0 times the ratio of said pair of dyes in a eutectic point composition, said mixture of dyes comprising at least 20% by weight of said layer and said eutectic composition has a melting point which is at least 5° C. lower than the lowest melting temperature of any of said dyes in said eutectic composition.
Claim 2
Dependent Claim
114 words
A thermal dye transfer element comprising a substrate having on one side thereof a layer of a polymeric binder having a mixture of at least two dyes therein, said dyes being capable of forming a eutectic composition and at least one pair of said dyes being present within said binder in a ratio which is between 0.25 and 4.0 times the ratio of said pair of dyes in a eutectic point composition, said mixture of dyes comprising at least 20% by weight of said layer and said eutectic composition has a melting point which is at least 5° C. lower than the lowest melting temperature of any of said dyes in said eutectic composition.
Claim 3
Dependent Claim
16 words
The element of claim 1 wherein at least one of said dyes is an azo dye.
Claim 4
Dependent Claim
16 words
The element of claim 2 wherein at least one of said dyes is an anthraquinone dye.
Claim 5
Dependent Claim
34 words
The element of claim 2 wherein said eutectic composition has a melting point which is at least 5° C. lower than the lowest melting temperature of any of said dyes in said eutectic composition.
Claim 6
Dependent Claim
28 words
The element of claim 4 wherein at least some portion of each dye which forms said eutectic composition is present within said binder layer as a solid particulate.
Claim 7
Dependent Claim
16 words
The element of claim 1 wherein at least one of said dyes is an anthraquinone dye.
Claim 8
Dependent Claim
29 words
A thermal dye transfer composition as in claim 1 wherein said pair of dyes has a molar ratio in the range 0.05 to 20.0 at the eutectic point composition.
Claim 9
Dependent Claim
35 words
A thermal dye transfer composition as in claim 1 wherein at least one of said dyes is selected from the group consisting of azo dyes, anthraquinone dyes, aminostyryl, azomethine, and disulphone classes, and combinations thereof.
Claim 10
Dependent Claim
17 words
The element of claim 1 wherein said mixture of at least two dyes consists of two dyes.
Claim 11
Dependent Claim
114 words
A thermal dye transfer element comprising a substrate having on one side thereof a layer of a polymeric binder having a mixture of at least two dyes therein, said dyes being capable of forming a eutectic composition and at least one pair of said dyes being present within said binder in a ratio which is between 0.25 and 4.0 times the ratio of said pair of dyes in a eutectic point composition, said mixture of dyes comprising at least 20% by weight of said layer, and said eutectic composition has a melting point which is at least 5° C. lower than the lowest melting temperature of any of said dyes in said eutectic composition.
Claim 12
Dependent Claim
114 words
A thermal dye transfer element comprising a substrate having on one side thereof a layer of a polymeric binder having a mixture of at least two dyes therein, said dyes being capable of forming a eutectic composition and at least one pair of said dyes being present within said binder in a ratio which is between 0.25 and 4.0 times the ratio of said pair of dyes in a eutectic point composition, said mixture of dyes comprising at least 20% by weight of said layer, and said eutectic composition has a melting point which is at least 5° C. lower than the lowest melting temperature of any of said dyes in said eutectic composition.
Claim 13
Dependent Claim
94 words
A thermal dye transfer element comprising a substrate having on one surface thereof a layer of at least two dyes therein, said dyes being capable of forming a eutectic composition and at least one pair of said dyes being present within said binder in a ratio which is between 0.25 and 4.0 times the ratio of said pair of dyes in a eutectic point composition, and said eutectic composition has a melting point which is at least 5° C. lower than the lowest melting temperature of any of said dyes in said eutectic composition.
Claim 14
Dependent Claim
94 words
A thermal dye transfer element comprising a substrate having on one surface thereof a layer of at least two dyes therein, said dyes being capable of forming a eutectic composition and at least one pair of said dyes being present within said binder in a ratio which is between 0.25 and 4.0 times the ratio of said pair of dyes in a eutectic point composition, and said eutectic composition has a melting point which is at least 5° C. lower than the lowest melting temperature of any of said dyes in said eutectic composition.
Claim 15
Dependent Claim
109 words
A thermal dye transfer element comprising a single, self-sustaining layer of a polymeric binder haivng a mixture of at least two dyes therein, said dyes being capable of forming a eutectic composition and at least one pair of said dyes being present within said binder in a ratio which is between 0.25 and 4.0 times the ratio of said pair of dyes in a eutectic point composition, said mixture of dyes comprising at least 20% by weight of said layer, and said eutectic composition has a melting point which is at least 5° C. lower than the lowest melting temperature of any of said dyes in said eutectic composition.
Claim 16
Dependent Claim
109 words
A thermal dye transfer element comprising a single, self-sustaining layer of a polymeric binder haivng a mixture of at least two dyes therein, said dyes being capable of forming a eutectic composition and at least one pair of said dyes being present within said binder in a ratio which is between 0.25 and 4.0 times the ratio of said pair of dyes in a eutectic point composition, said mixture of dyes comprising at least 20% by weight of said layer, and said eutectic composition has a melting point which is at least 5° C. lower than the lowest melting temperature of any of said dyes in said eutectic composition.
Claim 17
Dependent Claim
15 words
The element of claim 12 wherein at least one said dyes is an azo dye.
Claim 18
Dependent Claim
16 words
The element of claim 13 wherein at least one of said dyes is an anthraquinone dye.
Claim 19
Dependent Claim
34 words
The element of claim 14 wherein said eutectic composition has a melting point which is at least 5° C. lower than the lowest melting temperature of any of said dyes in said eutectic composition.
Claim 20
Dependent Claim
28 words
The element of claim 15 wherein at least some portion of each dye which forms said eutectic composition is present within said binder layer as a solid particulate.
Claim 21
Dependent Claim
34 words
The element of claim 13 wherein said eutectic composition has a melting point which is at least 5° C. lower than the lowest melting temperature of any of said dyes in said eutectic composition.
Claim 22
Dependent Claim
28 words
The element of claim 17 wherein at least some portion of each dye which forms said eutectic composition is present within said binder layer as a solid particulate.
Claim 23
Dependent Claim
17 words
The element of claim 12 wherein at least one of the said dyes is an anthraquinone dye.
Claim 24
Dependent Claim
34 words
The element of claim 19 wherein said eutectic composition has a melting point which is at least 5° C. lower than the lowest melting temperature of any of said dyes in said eutectic composition.
Claim 25
Dependent Claim
28 words
The element of claim 20 wherein at least some portion of each dye which forms said eutectic composition is present within said binder layer as a solid particulate.
Claim 26
Dependent Claim
28 words
The element of claim 12 wherein at least some portion of each dye which forms said eutectic composition is present within said binder layer as a solid particulate.
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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) | 1992-08-14 | 1993-02-13 | 1993-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-14 | 1997-02-13 | 1997-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-14 | 2001-02-13 | 2001-08-15 | $7700.00 | Window Closed / Lapsed |