Title:
THERMAL HEAD
Document Type and Number:
WIPO Patent Application WO/2019/064826
Kind Code:
A1
Abstract:
A thermal head is provided with: an underglaze layer provided on an insulating substrate; an electrode provided on the underglaze layer; a heating element provided on the electrode; a first protection layer coating at least the heating element and containing glass material; and a second protection layer provided on the first protection layer, having a melting point higher than that of the first protection layer, and made of material having a thermal expansion coefficient which is substantially constant with respect to temperature at 1000°C or lower.
Inventors:
MIYASHIGE MICHIHIRO (JP)
ONISHI NORIAKI (JP)
YAMAJI NORIO (JP)
ONISHI NORIAKI (JP)
YAMAJI NORIO (JP)
Application Number:
PCT/JP2018/026365
Publication Date:
April 04, 2019
Filing Date:
July 12, 2018
Export Citation:
Assignee:
AOI ELECTRONICS CO LTD (JP)
International Classes:
B41J2/335
Foreign References:
| JPH04214367A | 1992-08-05 | |||
| JPH068501A | 1994-01-18 | |||
| JP2005119094A | 2005-05-12 | |||
| JP2008207439A | 2008-09-11 | |||
| JPH05309855A | 1993-11-22 | |||
| JP2000153630A | 2000-06-06 | |||
| JPH06155793A | 1994-06-03 | |||
| US6081287A | 2000-06-27 |
Attorney, Agent or Firm:
NAGAI, Fuyuki et al. (JP)
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