JPS55140577A - Thermal head - Google Patents

Thermal head

Info

Publication number
JPS55140577A
JPS55140577A JP4909779A JP4909779A JPS55140577A JP S55140577 A JPS55140577 A JP S55140577A JP 4909779 A JP4909779 A JP 4909779A JP 4909779 A JP4909779 A JP 4909779A JP S55140577 A JPS55140577 A JP S55140577A
Authority
JP
Japan
Prior art keywords
heating resistor
thin film
insulating
thermal head
substrate
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
JP4909779A
Other languages
Japanese (ja)
Inventor
Tadayoshi Ono
Satoshi Aihara
Mamoru Mizuguchi
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
Tokyo Shibaura Electric Co Ltd
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, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP4909779A priority Critical patent/JPS55140577A/en
Publication of JPS55140577A publication Critical patent/JPS55140577A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/335—Structure of thermal heads

Abstract

PURPOSE:To prolong the lifetime of a thermal head by a method wherein a heating resistor is provided on a glass layer provided on a substrate and further an insulating sodium shield layer is provided between the glass layer and the heating resistor so as to check the change in the resistance of the heating resistor due to the move of a sodium ion. CONSTITUTION:On an insulating substrate 11 is provided a glass layer 12 about 50mu thick, on which is also provided an insulating sodium shield layer 13 of about 3,000Angstrom formed of silicon nitride and the like, whereon is formed a thin film of a heating resistor by spattering, whereon further being formed a thin film conductor. After patterning being applied to the thin film substrate thus produced, a heating resistor 14 and a wiring conductor 15 connected thereto are formed on the thin film substrate and thereon an insulating protection film 16 is fitted. By the device thus formed the move of the sodium ion to the negative pole of the heating resistor is checked, thereby a thermal head having a very long life being obtained.
JP4909779A 1979-04-23 1979-04-23 Thermal head Pending JPS55140577A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4909779A JPS55140577A (en) 1979-04-23 1979-04-23 Thermal head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4909779A JPS55140577A (en) 1979-04-23 1979-04-23 Thermal head

Publications (1)

Publication Number Publication Date
JPS55140577A true JPS55140577A (en) 1980-11-04

Family

ID=12821586

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4909779A Pending JPS55140577A (en) 1979-04-23 1979-04-23 Thermal head

Country Status (1)

Country Link
JP (1) JPS55140577A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4451835A (en) * 1981-10-19 1984-05-29 Tokyo Shibaura Denki Kabushiki Kaisha Thermal recording device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5060238A (en) * 1973-09-27 1975-05-24

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5060238A (en) * 1973-09-27 1975-05-24

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4451835A (en) * 1981-10-19 1984-05-29 Tokyo Shibaura Denki Kabushiki Kaisha Thermal recording device

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