US4851045A
Expired / Lapsed
US
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Hot-melt ink
Assignee: Seiko Epson Corp
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Filing: 1987-08-24
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Granted: 1989-07-25
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Expires: 2007-08-24
Abstract
Abstract A hot-melt ink containing between about 5 and 50 parts by weight of montain wax or oxidized montan-type wax or both having a melting point between about 60 DEG and 125 DEG C. is provided. The ink is useful in a heat transfer sheet where it is provided as a layer on one side of a substrate and a resistive layer is provided on the substrate on the side opposite the ink. Inks prepared in accordance with the invention exhibit good superimposing performance and improved blocking resistance.
Inventors
- 👤 Makoto Taniguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:30
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/392
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
79 words
A hot-melt ink for a fusible ink sheet having improved color superimposing performance and blocking resistance, comprising an effective amount of a coloring agent being present in amounts up to about 15% by weight, about 5 and 50% by weight of a wax binder for the hot-melt ink, the wax binder selected from, oxidized montan-type wax and mixtures of montan wax with said oxidized montan-type waxes, the wax binder having a melting point between about 60° and 125° C.
Claim 2
Dependent Claim
79 words
A hot-melt ink for a fusible ink sheet having improved color superimposing performance and blocking resistance, comprising an effective amount of a coloring agent being present in amounts up to about 15% by weight, about 5 and 50% by weight of a wax binder for the hot-melt ink, the wax binder selected from, oxidized montan-type wax and mixtures of montan wax with said oxidized montan-type waxes, the wax binder having a melting point between about 60° and 125° C.
Claim 3
Dependent Claim
105 words
The hot-melt ink of claim 1, wherein the wax is oxidized montan-type wax selected from: (a) acid-modified montan wax having the formula: ##STR4## wherein R is an organic group having between about 25 and 35 carbon atoms; (b) ester-modified montan wax having the formula: ##STR5## wherein R and R' are organic groups having between about 25 and 35 carbon atoms and n is an integer greater than or equal to 1; and (c) partially saponified ester-modified montan type wax having the formula: ##STR6## where R and R' are organic groups having between about 25 and 35 carbon atoms and M is an alkaline earth metal.
Claim 4
Dependent Claim
15 words
The hot-melt ink of claim 1, wherein the coloring material is a dye or pigment.
Claim 5
Dependent Claim
15 words
The hot-melt ink of claim 1, wherein the hot-melt ink further includes a second wax.
Claim 6
Dependent Claim
20 words
The hot-melt ink of claim 4, wherein the second wax is selected from carnauba wax, N-paraffin wax, and mixtures thereof.
Claim 7
Dependent Claim
21 words
The hot-melt ink of claim 4, wherein the second wax is present in an amount up to about 50% by weight.
Claim 8
Dependent Claim
15 words
The hot-melt ink of claim 1, wherein the hot-melt ink further includes ethylene-vinyl acetate copolymer.
Claim 9
Dependent Claim
22 words
The hot-melt ink of claim 7, wherein the ethylene-vinyl acetate copolymer is present in an amount up to about 15% by weight.
Claim 10
Dependent Claim
28 words
The hot-melt ink of claim 1, wherein the hot-melt ink further includes an effective amount of a coloring material dispersant for dispersing the coloring material in the ink.
Claim 11
Dependent Claim
20 words
The hot-melt ink of claim 1, wherein the hot-melt ink is used as a layer of a fusible ink sheet.
Claim 12
Dependent Claim
33 words
The hot-melt ink of claim 10, wherein the fusible ink sheet includes a substrate having the hot-melt ink on one side thereof and an electrothermal resistive layer on the side opposite the ink.
Claim 13
Dependent Claim
13 words
The hot-melt ink of claim 11, wherein the substrate is a polyester film.
Claim 14
Dependent Claim
22 words
The hot-melt ink of claim 11, wherein the electrothermal resistive layer includes polyester resin, conductive carbon black and a carbon black dispersant.
Claim 15
Dependent Claim
20 words
The hot-melt ink of claim 2, wherein the oxidized montan-type wax is synthesized from coal and primarily includes montan wax.
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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) | 1992-07-24 | 1993-01-23 | 1993-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-24 | 1997-01-23 | 1997-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-24 | 2001-01-23 | 2001-07-25 | $7700.00 | Window Closed / Lapsed |