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Patent US4717709A successfully refreshed from Google Patents.
US4717709A
Expired / Lapsed
US
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Thermosensitive recording material
Assignee: Tomoegawa Paper Manufacturing Co Ltd
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Filing: 1985-10-28
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Granted: 1988-01-05
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Expires: 2005-10-28
Abstract
Abstract Thermosensitive recording material comprising a support, a polyolefin resin layer and a thermosensitive coloring layer, both formed on one side of the support in this order. The thermosensitive coloring layer is made of a dispersion, in a binder, of a colorless or pale-colored leuco dye and an acidic material capable of color formation of the leuco dye when it is heated. When a pressure-sensitive adhesive layer and a release paper are formed on the other side of the support in this order, the thermosensitive recording material can be used as a thermosensitive recording label.
Inventors
- 👤 Akira Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:27
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/42; B41M5/44; B41M5/30; B41M5/426
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
76 words
A thermosensitive recording material comprising: a support sheet; a polyolefin resin layer; and a thermosensitive coloring layer formed on one side of said support sheet in this order; said thermosensitive coloring layer comprising a normally colorless or pale-colored leuco dye and an acidic material capable of coloring said leuco dye upon being heated; said polyolefin resin layer being corona-discharge treated in order to improve the adhesion of said thermosensitive coloring layer to said polyolefin resin layer.
Claim 2
Dependent Claim
76 words
A thermosensitive recording material comprising: a support sheet; a polyolefin resin layer; and a thermosensitive coloring layer formed on one side of said support sheet in this order; said thermosensitive coloring layer comprising a normally colorless or pale-colored leuco dye and an acidic material capable of coloring said leuco dye upon being heated; said polyolefin resin layer being corona-discharge treated in order to improve the adhesion of said thermosensitive coloring layer to said polyolefin resin layer.
Claim 3
Dependent Claim
27 words
A thermosensitive recording material according to claim 1, wherein said polyolefin resin layer has a thickness of from 5 to 20 μm and is formed by lamination.
Claim 4
Dependent Claim
31 words
A thermosensitive recording material according to claim 1, wherein said polyolefin resin layer further comprises a white pigment in an amount of from 5 to 20 wt% of the polyolefin resin.
Claim 5
Dependent Claim
27 words
A thermosensitive recording material according to claim 1, further comprising a barrier layer consisting essentially of a water-soluble polymeric material and formed on said thermosensitive coloring layer.
Claim 6
Dependent Claim
43 words
A thermosensitive recording material according to claim 4, further comprising a pressure-sensitive adhesive layer and a releasable sheet formed on the opposite side of said support sheet in this order whereby said recording material can be used as a thermosensitive recording adhesive label.
Claim 7
Dependent Claim
43 words
A thermosensitive recording material according to claim 1, further comprising a pressure-sensitive adhesive layer and a releasable sheet formed on the opposite side of said support sheet in this order whereby said recording material can be used as a thermosensitive recording adhesive label.
Claim 8
Dependent Claim
20 words
A thermosensitive recording material according to claim 1 wherein the support sheet does not have a barrier layer directly thereon.
Claim 9
Dependent Claim
16 words
The thermosensitive recording material of claim 1 wherein the thermosensitive coloring layer also comprises binder ingredient.
References Cited (Backward Citations)
JPS57103892A
Cited
JPS57123088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-04 | 1991-07-06 | 1992-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-04 | 1995-07-06 | 1996-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-04 | 1999-07-06 | 2000-01-05 | $7700.00 | Window Closed / Lapsed |