US5733665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-usable thermal transfer ink sheet
Assignee: Fujicopian Co Ltd
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Filing: 1992-11-12
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Granted: 1998-03-31
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Expires: 2012-11-12
Abstract
Abstract A multi-usable thermal transfer ink sheet including a foundation and a multi-transferable ink layer provided on the foundation, the ink layer containing a heat-meltable material and carbon black as main ingredients, the carbon black having an oil absorption of not more than 70 ml/100 g. The ink sheet enables multi-printing with ensuring a high print density.
Inventors
- 👤 Takao Arimura
- 👤 Masao Saisho
- 👤 Jun Sogabe
- 👤 Katsuhiro Yoshida
- 👤 Naohiro Ikeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:02
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/385; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24901
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
111 words
A multi-usable thermal transfer ink sheet comprising a foundation and a multi-transferable ink layer provided on the foundation, the ink layer being an ink layer which is brought into contact with a receiving medium during transfer and which is capable of being transferred in increments relative to the thickness thereof onto a receiving medium every time when the same portion of the ink layer is heated, the ink layer comprising a heat-meltable material and carbon black as main ingredients, the carbon black having an oil absorption of not more than 70 ml/100 g, wherein the content of the carbon black in the ink layer is from 40 to 60% by weight.
Claim 2
Dependent Claim
111 words
A multi-usable thermal transfer ink sheet comprising a foundation and a multi-transferable ink layer provided on the foundation, the ink layer being an ink layer which is brought into contact with a receiving medium during transfer and which is capable of being transferred in increments relative to the thickness thereof onto a receiving medium every time when the same portion of the ink layer is heated, the ink layer comprising a heat-meltable material and carbon black as main ingredients, the carbon black having an oil absorption of not more than 70 ml/100 g, wherein the content of the carbon black in the ink layer is from 40 to 60% by weight.
Claim 3
Dependent Claim
35 words
The multi-usable thermal transfer ink sheet of claim 1, wherein the heat-meltable material comprises a heat-meltable resin and a wax substance, the ratio of the heat-meltable resin to the wax substance being 1:0.2 to 4.
Claim 4
Dependent Claim
24 words
The multi-usable thermal transfer ink sheet of claim 1, wherein the oil absorption of the carbon black is not more than 55 ml/100 g.
Claim 5
Dependent Claim
23 words
The multi-usable thermal transfer ink sheet of claim 1, wherein the ink layer has a melt viscosity of 500 to 50,000 poises/100° C.
Claim 6
Dependent Claim
24 words
The multi-usable thermal transfer ink sheet of claim 4, wherein the melt viscosity of the ink layer is from 6,000 to 20,000 poises/100° C.
Claim 7
Dependent Claim
41 words
The multi-usable thermal transfer ink sheet of claim 1, wherein the content of the carbon black in the ink layer is from 40 to 60% by weight, and the ink layer has a melt viscosity of 500 to 50,000 poises/100° C.
Claim 8
Dependent Claim
55 words
The multi-usable thermal transfer ink sheet of claim 1, wherein the oil absorption of the carbon black is not more than 55 ml/100 g, the content of the carbon black in the ink layer is from 40 to 60% by weight, and the ink layer has a melt viscosity of 6,000 to 20,000 poises/100° C.
References Cited (Backward Citations)
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US4927693A
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EP0354293A2
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JPH02277691A
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EP0453257A1
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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) | 2001-03-30 | 2001-09-29 | 2002-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-30 | 2005-09-29 | 2006-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-30 | 2009-09-29 | 2010-03-31 | $7700.00 | Window Closed / Lapsed |