JPS6430770A - Thermal head - Google Patents
Thermal headInfo
- Publication number
- JPS6430770A JPS6430770A JP18655687A JP18655687A JPS6430770A JP S6430770 A JPS6430770 A JP S6430770A JP 18655687 A JP18655687 A JP 18655687A JP 18655687 A JP18655687 A JP 18655687A JP S6430770 A JPS6430770 A JP S6430770A
- Authority
- JP
- Japan
- Prior art keywords
- protective layer
- membrane
- density
- heat
- resistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Electronic Switches (AREA)
Abstract
PURPOSE:To enhance not only heat efficiency but also abrasion resistance, in a thermal head consisting of a membrane heat generating resistor and the protective layer formed on said resistor, by forming the protective layer from a membrane having specific density. CONSTITUTION:In a thermal head wherein a membrane heat generating resistor 2 is formed on a substrate 1 and a protective layer 4 is formed on said resistor 2, the protective layer 4 is formed of a membrane and the density thereof is set to 75-95% of the theoretical density of the material quality of the protective layer 4. The membrane material of the protective layer 4 is pref. selected from Al2O3, SiO2, ZrO2, Ta2O5, Si3N4, AlN and Ti3N4. When the density of the protective layer 4 is low as mentioned above, a void is generated in the protective layer 4 and the heat conductivity of this part is extremely inferior in the same degree as air and the heat conductivity of the protective layer 4 becomes low as compared with a conventional dense protective layer. As a result, the diffusion of heat energy in a lateral direction is reduced and the printing efficiency of recording paper is enhanced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18655687A JPS6430770A (en) | 1987-07-28 | 1987-07-28 | Thermal head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18655687A JPS6430770A (en) | 1987-07-28 | 1987-07-28 | Thermal head |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6430770A true JPS6430770A (en) | 1989-02-01 |
Family
ID=16190587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18655687A Pending JPS6430770A (en) | 1987-07-28 | 1987-07-28 | Thermal head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6430770A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017018415A1 (en) * | 2015-07-30 | 2017-02-02 | 京セラ株式会社 | Thermal head and thermal printer |
JP2018034407A (en) * | 2016-08-31 | 2018-03-08 | 東芝ホクト電子株式会社 | Thermal print head and thermal printer |
-
1987
- 1987-07-28 JP JP18655687A patent/JPS6430770A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017018415A1 (en) * | 2015-07-30 | 2017-02-02 | 京セラ株式会社 | Thermal head and thermal printer |
CN107921784A (en) * | 2015-07-30 | 2018-04-17 | 京瓷株式会社 | Thermal head and thermal printer |
JPWO2017018415A1 (en) * | 2015-07-30 | 2018-04-26 | 京セラ株式会社 | Thermal head and thermal printer |
US20180201026A1 (en) * | 2015-07-30 | 2018-07-19 | Kyocera Corporation | Thermal head and thermal printer |
US10245843B2 (en) | 2015-07-30 | 2019-04-02 | Kyocera Corporation | Thermal head and thermal printer |
CN107921784B (en) * | 2015-07-30 | 2019-09-27 | 京瓷株式会社 | Thermal head and thermal printer |
JP2018034407A (en) * | 2016-08-31 | 2018-03-08 | 東芝ホクト電子株式会社 | Thermal print head and thermal printer |
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