JPS6430770A - Thermal head - Google Patents

Thermal head

Info

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
Application number
JP18655687A
Other languages
Japanese (ja)
Inventor
Shigeki Uno
Osamu Takigawa
Hideaki Hiraki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP18655687A priority Critical patent/JPS6430770A/en
Publication of JPS6430770A publication Critical patent/JPS6430770A/en
Pending legal-status Critical Current

Links

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.
JP18655687A 1987-07-28 1987-07-28 Thermal head Pending JPS6430770A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (7)

* Cited by examiner, † Cited by third party
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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