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EP0354293A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Multi-usable heat transfer ink ribbon

Assignee: Fujicopian Co Ltd
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Filing: 1989-01-07
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Granted: —
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Expires: 2009-01-07
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Abstract

Abstract A multi-usable heat transfer ink ribbon comprising a foundation, and a heat transfer ink layer provided on one surface of the foundation, said heat transfer ink layer having a melt index of 4 X 10² to 2.5 X 10³ g/10 min. at 190°C and containing a vehicle and 3 X 10 to 6 X 10 % by volume of a nonthermoplastic powder dispersed in a nonagglomerative state, wherein said heat transfer ink layer is capable of being melted or softened to be transferred to a receiving medium in increments relative to the thickness direction of the ink layer upon heating by means of a heating head. The multi-usable heat transfer ink ribbon, though the whole of the ink layer is transferable by incorporating into the ink layer no nontransferable material which hinders the transfer of the ink, can give printed images having the same clearness as that of the printed image obtained by the initial printing even after the ribbon is repeatedly used multiple times for printing.

Inventors

  • 👤 Hiromi Tsuyuguchi
  • 👤 Masao Saisho
  • 👤 Katsuhiro Yoshida

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-23 18:43
CPC Classifications
B; B41; B41J; B41J31/00; B41J31/05; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/38207; B41M5/38214; B41M5/392

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 106 words
A multi-usable heat transfer ink ribbon comprising a foundation, and a heat transfer ink layer provided on one surface of the foundation, said heat transfer ink layer having a melt index of 4 X 10² to 2.5 X 10³ g/10 min. at 190°C and containing a vehicle and 3 X 10 to 6 X 10 % by volume of a nonthermoplastic powder dispersed in a nonagglomerative state, wherein said heat transfer ink layer is capable of being melted or softened to be transferred to a receiving medium in increments relative to the thickness direction of the ink layer upon heating by means of a heating head.
Claim 2
Dependent Claim 106 words
A multi-usable heat transfer ink ribbon comprising a foundation, and a heat transfer ink layer provided on one surface of the foundation, said heat transfer ink layer having a melt index of 4 X 10² to 2.5 X 10³ g/10 min. at 190°C and containing a vehicle and 3 X 10 to 6 X 10 % by volume of a nonthermoplastic powder dispersed in a nonagglomerative state, wherein said heat transfer ink layer is capable of being melted or softened to be transferred to a receiving medium in increments relative to the thickness direction of the ink layer upon heating by means of a heating head.
Claim 3
Dependent Claim 41 words
The ink ribbon of Claim 1, wherein said vehicle comprises a thermoplastic resin having a melt index of 4 X 10² to 2.5 X 10³ g/10 min. at 190°C and said powder has a particle size of 10 to 100 µm.
Claim 4
Dependent Claim 37 words
The ink ribbon of Claim 2, wherein said powder is at least one member selected from the group consisting of inorganic pigments, body pigments and organic pigments and has a particle size of 20 to 100 µm.
Claim 5
Dependent Claim 26 words
The ink ribbon of Claim 2, wherein said powder is a mixture of two kinds of carbon blacks different from each other in their particle size.
Claim 6
Dependent Claim 35 words
The ink ribbon of Claim 1, wherein said heat transfer ink layer further contains a viscosity adjusting agent and a surface property modifying agent for reducing the tackiness of the surface of the ink layer.
Claim 7
Dependent Claim 15 words
The ink ribbon of claim 1, wherein the non-­thermoplastic powder serves as a coloring agent.

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