JPS57120459A - Thermal head - Google Patents

Thermal head

Info

Publication number
JPS57120459A
JPS57120459A JP56007009A JP700981A JPS57120459A JP S57120459 A JPS57120459 A JP S57120459A JP 56007009 A JP56007009 A JP 56007009A JP 700981 A JP700981 A JP 700981A JP S57120459 A JPS57120459 A JP S57120459A
Authority
JP
Japan
Prior art keywords
oxide
heating resistor
glazed
substrate
thermal head
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
JP56007009A
Other languages
Japanese (ja)
Inventor
Yoshiro Yabuki
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP56007009A priority Critical patent/JPS57120459A/en
Publication of JPS57120459A publication Critical patent/JPS57120459A/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

Landscapes

  • Electronic Switches (AREA)
  • Non-Adjustable Resistors (AREA)

Abstract

PURPOSE:To obtain the thermal head having high density and excellent durability by a method wherein a low-alkali glass layer whose content of sodium oxide and kalium oxide is little and whose softening point is in the specified range is applied on a glazed substrate and a heating resistor and an electrode are provided later thereon. CONSTITUTION:After the low-alkali glass layer whose content of sodium oxide and kalium oxide is less than 1.0wt% totally and whose softening point is within the range of 600-740 deg.C is applied on the glazed substrate, the heating resistor and the electrode are provided thereon. As the substrate to be glazed, a sintered substance whose main constituent is an oxide of alumina, beryllia, magnesia or the like is preferable. As the heating resistor, the one prepared by using zirconium boride, tantalum nitride or the like is preferable.
JP56007009A 1981-01-20 1981-01-20 Thermal head Pending JPS57120459A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56007009A JPS57120459A (en) 1981-01-20 1981-01-20 Thermal head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56007009A JPS57120459A (en) 1981-01-20 1981-01-20 Thermal head

Publications (1)

Publication Number Publication Date
JPS57120459A true JPS57120459A (en) 1982-07-27

Family

ID=11654051

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56007009A Pending JPS57120459A (en) 1981-01-20 1981-01-20 Thermal head

Country Status (1)

Country Link
JP (1) JPS57120459A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60120069A (en) * 1983-12-02 1985-06-27 Rohm Co Ltd Thermal print head

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60120069A (en) * 1983-12-02 1985-06-27 Rohm Co Ltd Thermal print head
JPH0357873B2 (en) * 1983-12-02 1991-09-03 Rohm Kk

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