JPS56159175A - Thermal head - Google Patents

Thermal head

Info

Publication number
JPS56159175A
JPS56159175A JP6263580A JP6263580A JPS56159175A JP S56159175 A JPS56159175 A JP S56159175A JP 6263580 A JP6263580 A JP 6263580A JP 6263580 A JP6263580 A JP 6263580A JP S56159175 A JPS56159175 A JP S56159175A
Authority
JP
Japan
Prior art keywords
substrate
layer
resistance layer
thermal head
pattern
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
JP6263580A
Other languages
Japanese (ja)
Inventor
Masatoshi Oota
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 JP6263580A priority Critical patent/JPS56159175A/en
Publication of JPS56159175A publication Critical patent/JPS56159175A/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 prevent corrosion of a glaze layer in a substrate with hydrofluoric acid substance when forming a resistance layer pattern and to enable to conduct a high- quality printing, by a method wherein, in a thermal head, a substrate protection layer is formed between the substrate and the resistance layer. CONSTITUTION:In a thermal head which is formed such that a resistance layer 12, an electrode band 13, and an abrasion resistance layer 14 are laminated in order named above on an upper surface of a glazed ceramic substrate 11, a substrate protection layer 15, consisting of tantalum oxide having a complete insulation property, is located between the substrate 11 and a resistance layer 12. This prevents corrosion of the glaze layer in the substrate even if a hydrofluoric acid medicine is used when forming the pattern of the resistance layer. As a result, a yield at the time of forming the pattern of the resistance layer 12, is improved, and the surface of the abrasion resistant layer 14 can be reduced in the unevenness. This improves contact of a platen roller with a thermal head and enables to perform a high-quality printing.
JP6263580A 1980-05-12 1980-05-12 Thermal head Pending JPS56159175A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6263580A JPS56159175A (en) 1980-05-12 1980-05-12 Thermal head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6263580A JPS56159175A (en) 1980-05-12 1980-05-12 Thermal head

Publications (1)

Publication Number Publication Date
JPS56159175A true JPS56159175A (en) 1981-12-08

Family

ID=13205974

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6263580A Pending JPS56159175A (en) 1980-05-12 1980-05-12 Thermal head

Country Status (1)

Country Link
JP (1) JPS56159175A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5783475A (en) * 1980-11-13 1982-05-25 Seiko Epson Corp Thermal head
JPS63307964A (en) * 1987-06-09 1988-12-15 Rohm Co Ltd Thermal head

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5783475A (en) * 1980-11-13 1982-05-25 Seiko Epson Corp Thermal head
JPS63307964A (en) * 1987-06-09 1988-12-15 Rohm Co Ltd Thermal head

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