US4490434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal dye-transfer type recording sheet
Assignee: Nippon Paper Industries Co Ltd
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Filing: 1983-02-28
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Granted: 1984-12-25
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Expires: 2003-02-28
Abstract
Abstract A recording sheet for thermal-dye transfer type recording having a coating layer which is placed on a substrate which is contacted with a coloring material layer containing sublimable dye and on which the dye is transferred by heating, wherein the coating layer includes both particular fine silica and particular binder, whereby the sheet provides a clear record with superior color density.
Inventors
- 👤 Hiroyo Oshima
- 👤 Isao Kano
- 👤 Yutaka Kojima
- 👤 Kazuo Harada
- 👤 Takeo Konno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:20
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/5218; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24901; Y10T428/24934; Y10T428/25; Y10T428/256; Y10T428/258; Y10T428/27; Y10T428/273; Y10T428/277
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
122 words
Thermal-dye transfer type recording sheet having a coating layer prepared by coating on a base sheet with coating color at a coating weight of 5-15 g/m 2 with a sizing press system or coating system, said coating layer being contacted with a coloring material layer containing sublimable dye on a substrate, said coloring material being selectively transferred on said coating layer by heating, wherein said coating layer comprises both fine silica having more than 250 cm 2 /g specific surface area measured by the BET-method and at least one binder selected from the group consisting of casein, guar gum, polyvinyl alcohol, polyacrylic amide, sodium polyacrylate, polyvinyl pyrrolidone, carboxymethyl cellulose, hydroxyethyl celluluose, styrene butadiene copolymer latex, polyacrylic ester, saturated polyester and unsaturated polyester.
Claim 2
Dependent Claim
122 words
Thermal-dye transfer type recording sheet having a coating layer prepared by coating on a base sheet with coating color at a coating weight of 5-15 g/m 2 with a sizing press system or coating system, said coating layer being contacted with a coloring material layer containing sublimable dye on a substrate, said coloring material being selectively transferred on said coating layer by heating, wherein said coating layer comprises both fine silica having more than 250 cm 2 /g specific surface area measured by the BET-method and at least one binder selected from the group consisting of casein, guar gum, polyvinyl alcohol, polyacrylic amide, sodium polyacrylate, polyvinyl pyrrolidone, carboxymethyl cellulose, hydroxyethyl celluluose, styrene butadiene copolymer latex, polyacrylic ester, saturated polyester and unsaturated polyester.
Claim 3
Dependent Claim
37 words
Thermal-dye transfer type recording sheet according to claim 1, wherein said coating layer further comprises at least one pigment selected from the group consisting of natural ground calcium carbonate, precipitated calcium carbonate, titanium dioxide and barium sulfate.
Claim 4
Dependent Claim
24 words
Thermal-dye transfer type recording sheet according to claim 1, wherein said coating layer is coated on said recording sheet at 5-15 g/m 2 .
References Cited (Backward Citations)
JPS55142692A
Cited
EP0026096A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-25 | 1988-06-25 | 1988-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-25 | 1992-06-25 | 1992-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-25 | 1996-06-25 | 1996-12-25 | $7700.00 | Window Closed / Lapsed |