Patent US5108980A successfully refreshed from Google Patents.
US5108980A
Expired / Lapsed
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Reversible thermosensitive recording material
Assignee: Ricoh Co Ltd
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Filing: 1990-12-14
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Granted: 1992-04-28
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Expires: 2010-12-14
Abstract
Abstract A reversible thermosensitive recording material is disclosed, which comprises (a) a support, (b) a reversible thermosensitive recording layer formed thereon which comprises as the main components a matrix resin and an organic low-molecular-weight material dispersed in the matrix resin, and has a temperature-dependent transparency, and (c) an overcoat layer comprising as the main component a resin or an ultraviolet-light-setting resin, formed on the reversible thermosensitive recording layer.
Inventors
- 👤 Yoshihiko Hotta
- 👤 Keishi Kubo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:03
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/42; B41M5/36; B41M5/363; B41M5/405; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31511; Y10T428/31551; Y10T428/31652; Y10T428/31663; Y10T428/31786; Y10T428/31855; Y10T428/31931; Y10T428/31935
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
143 words
A reversible thermosensitive recording material comprising: (a) a support, (b) a reversible thermosensitive recording layer formed thereon which comprises as the main components a matrix resin and an organic low-molecular-weight material dispersed in said matrix resin, and has a temperature-dependent transparency, and (c) an overcoat layer comprising as the main component an ultraviolet light-setting resin, formed on said reversible thermosensitive recording layer; said ultraviolet light-setting resin in said overcoat layer being selected from the group consisting of a silicone-based rubber, a silicone resin, a polysiloxane graft polymer, polyvinyl chloride, a vinyl chloride-vinyl acetate copolymer, a vinyl chloride-vinyl acetate-vinyl alcohol copolymer, a vinyl chloride-vinyl acetate-maleic acid copolymer, polyvinylidene chloride, a vinylidene chloride-vinyl chloride copolymer, a vinylidene chloride-acrylonitrile copolymer, a polyester, a polyamide, a polyacrylate, a polymethacrylate, an acrylate-methacrylate copolymer, polyethylene, polypropylene, polystyrene, an ABS resin, polyvinyl alcohol, an epoxy resin, and a phenol resin.
Claim 2
Dependent Claim
143 words
A reversible thermosensitive recording material comprising: (a) a support, (b) a reversible thermosensitive recording layer formed thereon which comprises as the main components a matrix resin and an organic low-molecular-weight material dispersed in said matrix resin, and has a temperature-dependent transparency, and (c) an overcoat layer comprising as the main component an ultraviolet light-setting resin, formed on said reversible thermosensitive recording layer; said ultraviolet light-setting resin in said overcoat layer being selected from the group consisting of a silicone-based rubber, a silicone resin, a polysiloxane graft polymer, polyvinyl chloride, a vinyl chloride-vinyl acetate copolymer, a vinyl chloride-vinyl acetate-vinyl alcohol copolymer, a vinyl chloride-vinyl acetate-maleic acid copolymer, polyvinylidene chloride, a vinylidene chloride-vinyl chloride copolymer, a vinylidene chloride-acrylonitrile copolymer, a polyester, a polyamide, a polyacrylate, a polymethacrylate, an acrylate-methacrylate copolymer, polyethylene, polypropylene, polystyrene, an ABS resin, polyvinyl alcohol, an epoxy resin, and a phenol resin.
Claim 3
Dependent Claim
21 words
The reversible thermosensitive recording material as claimed in claim 1, wherein said resin in said overcoat layer is a silicone-based rubber.
Claim 4
Dependent Claim
21 words
The reversible thermosensitive recording material as claimed in claim 1, wherein said resin in said overcoat layer is a silicone resin.
Claim 5
Dependent Claim
22 words
The reversible thermosensitive recording material as claimed in claim 1, wherein said resin in said overcoat layer is a polysiloxane graft polymer.
Claim 6
Dependent Claim
67 words
The reversible thermosensitive recording material as claimed in claim 1, wherein said resin in said overcoat layer is selected from the group consisting of polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, vinyl chloride-vinyl acetate-vinyl alcohol copolymer, vinyl chloride-vinyl acetate-maleic acid copolymer, polyvinylidene chloride, vinylidene chloride-vinyl chloride copolymer, vinylidene chloride-acrylonitrile copolymer, polyester, polyamide, polyacrylate, polymethacrylate, acrylate-methacrylate copolymer, polyethylene, polypropylene, polystyrene, ABS resin, polyvinyl alcohol, epoxy resin, and phenol resin.
Claim 7
Dependent Claim
41 words
The reversible thermosensitive recording material as claimed in claim 1, wherein said low-molecular-weight material is selected from the group consisting of lauric acid, dodecanoic acid, myristic acid, pentadecanoic acid, palmitic acid, stearic acid, behenic acid, nonadecanoic acid, arachic acid, oleic acid.
Claim 8
Dependent Claim
34 words
The reversible thermosensitive recording material as claimed in claim 1, wherein said low-molecular-weight material is selected from the group consisting of methyl stearate, tetradecyl stearate, octadecyl stearate, octadecyl laurate, tetradecyl palmitate, and docosyl behenate.
Claim 9
Dependent Claim
57 words
The reversible thermosensitive recording material as claimed in claim 1, wherein said matrix resin in said reversible thermosensitive recording layer is selected from the group consisting of polyvinyl chloride; vinyl chloride-vinyl acetate copolymer, vinyl chloride-vinyl acetate-vinyl alcohol copolymer, vinyl chloride-vinyl acetate-maleic acid copolymer, vinyl chloride-acrylate copolymer, vinylidene chloride-acrylonitrile, polyester, polyamide, polyacrylate, polymethacrylate, acrylate-methacrylate copolymer, and silicone resin.
Claim 10
Dependent Claim
19 words
The reversible thermosensitive recording material as claimed in claim 1, wherein said resin in said overcoat layer is polystyrene.
References Cited (Backward Citations)
JPS5853482A
Cited
JPS60257289A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-04-28 | 1995-10-28 | 1996-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-04-28 | 1999-10-28 | 2000-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-04-28 | 2003-10-28 | 2004-04-28 | $7700.00 | Window Closed / Lapsed |