JPS57199669A - Dot printing head - Google Patents

Dot printing head

Info

Publication number
JPS57199669A
JPS57199669A JP8379081A JP8379081A JPS57199669A JP S57199669 A JPS57199669 A JP S57199669A JP 8379081 A JP8379081 A JP 8379081A JP 8379081 A JP8379081 A JP 8379081A JP S57199669 A JPS57199669 A JP S57199669A
Authority
JP
Japan
Prior art keywords
magnetic
permanent magnet
magnetic flux
electromagnetic
electromagnetic coils
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.)
Granted
Application number
JP8379081A
Other languages
Japanese (ja)
Other versions
JPS625073B2 (en
Inventor
Tadashi Kodama
Toshiro Murano
Takeshi Oshima
Original Assignee
Nippon Telegr & Teleph Corp <Ntt>
Oki Electric Ind 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 Nippon Telegr & Teleph Corp <Ntt>, Oki Electric Ind Co Ltd filed Critical Nippon Telegr & Teleph Corp <Ntt>
Priority to JP56083790A priority Critical patent/JPS625073B2/ja
Publication of JPS57199669A publication Critical patent/JPS57199669A/en
Publication of JPS625073B2 publication Critical patent/JPS625073B2/ja
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/22Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
    • B41J2/23Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
    • B41J2/27Actuators for print wires
    • B41J2/28Actuators for print wires of spring charge type, i.e. with mechanical power under electro-magnetic control

Abstract

PURPOSE:To cut magnetic flux resulting from a permanent magnet by a small electric power by using a system in which a subbypath is provided to the electromagnetic circuit of electromagnetic coil in a spring charge type dot printing head in such a way as to reduce the magnetic resistance of the magnetic circuit with reference to the electromagnetic coil. CONSTITUTION:Under the condition that electricity is not supplied to the first and second electromagnetic coils 6 and 7, the magnetic flux 11 of a permanent magnet 2 passes through the magnetic paths i.e. , the permanent magnet 2-the fit bypath 4 of core 3 and the second bypath 5-armature 9-yoke 1-permanent magnet 2. When electromagnetic coils 6 and 7 are energized by a printing command, the magnetic flux 11 of the permanent magnet 2 is erased by the magnetic fluxes 13 and 14 and the armature 9 is turned counterclockwise by the reaction of a plate spring 8. In this case, since the amount of the magnetic flux of the electromagnetic coils 6 and 7, passing through two bypaths 4 and 5 of the core 3 which are the magnetic paths for the magnetic flux 11 of the permanent maget 2, is very small, magnetic resistance can be lessened for the electromagnetic coils and electric power required for energization can also be reduced.
JP56083790A 1981-06-02 1981-06-02 Expired JPS625073B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56083790A JPS625073B2 (en) 1981-06-02 1981-06-02

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56083790A JPS625073B2 (en) 1981-06-02 1981-06-02

Publications (2)

Publication Number Publication Date
JPS57199669A true JPS57199669A (en) 1982-12-07
JPS625073B2 JPS625073B2 (en) 1987-02-03

Family

ID=13812435

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56083790A Expired JPS625073B2 (en) 1981-06-02 1981-06-02

Country Status (1)

Country Link
JP (1) JPS625073B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5039235A (en) * 1988-10-18 1991-08-13 Seiko Epson Corporation Printer utilizing improved impact dot print head

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5563283A (en) * 1978-11-06 1980-05-13 Fujitsu Ltd Wire dot printer
JPS568456U (en) * 1979-07-03 1981-01-24

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS568456B2 (en) * 1973-09-04 1981-02-24

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5563283A (en) * 1978-11-06 1980-05-13 Fujitsu Ltd Wire dot printer
JPS568456U (en) * 1979-07-03 1981-01-24

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5039235A (en) * 1988-10-18 1991-08-13 Seiko Epson Corporation Printer utilizing improved impact dot print head

Also Published As

Publication number Publication date
JPS625073B2 (en) 1987-02-03

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