发明名称 |
Thermal recording media |
摘要 |
A thermal ink ribbon has a base sheet, a thermal recording layer arranged on one side of the base sheet, and a back layer arranged on an opposite side of the base sheet. The back layer according to the present invention comprises a polyurethane resin which is obtained by reacting a low molecular weight polymer having at least one active-hydrogen-containing group at one end of the molecule, a compound having at least one active-hydrogen group and at least one hydrophilic group except a hydroxide group, with a polyisocyanate. The back layer is excellent in the adhesiveness to a base sheet, the heat resistance relative to a thermal head and slipperiness to a thermal head; and the ink ribbon with such a back layer has no problems in printed characters and figures on printing, in the migration of impurities from the back layer into an ink layer, in smeariness of a thermal head and in its maintenance. Such a back layer is capable of being formed on a surface of a base sheet by only applying the coating, which comprises the above polyurethane resin, for forming a back layer; and drying the coated layer. |
申请公布号 |
EP1457352(A3) |
申请公布日期 |
2005.08.31 |
申请号 |
EP20040005581 |
申请日期 |
2004.03.09 |
申请人 |
DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.;UKIMA COLOUR &CHEMICALS MFG. CO., LTD. |
发明人 |
KAWAGUCHI, TAKESHI;HANADA, KAZUYUKI;TORII, KATSUTOSHI;UMEZU, MOTOAKI;KAMITA,TOMOAKI |
分类号 |
B41M5/382;B41M5/30;B41M5/40;B41M5/42;B41M5/44 |
主分类号 |
B41M5/382 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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