JPS57199668A - Dot printing head - Google Patents

Dot printing head

Info

Publication number
JPS57199668A
JPS57199668A JP8378981A JP8378981A JPS57199668A JP S57199668 A JPS57199668 A JP S57199668A JP 8378981 A JP8378981 A JP 8378981A JP 8378981 A JP8378981 A JP 8378981A JP S57199668 A JPS57199668 A JP S57199668A
Authority
JP
Japan
Prior art keywords
armature
core
spring
printing head
releasing
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
JP8378981A
Other languages
Japanese (ja)
Other versions
JPS625072B2 (en
Inventor
Toshiro Murano
Tadashi Kodama
Takeshi Oshima
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.)
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Oki Electric Industry 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 Telegraph and Telephone Corp, Oki Electric Industry Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP8378981A priority Critical patent/JPS57199668A/en
Publication of JPS57199668A publication Critical patent/JPS57199668A/en
Publication of JPS625072B2 publication Critical patent/JPS625072B2/ja
Granted 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
    • B41J2/22—Typewriters 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
    • B41J2/23—Typewriters 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
    • B41J2/27—Actuators for print wires
    • B41J2/28—Actuators for print wires of spring charge type, i.e. with mechanical power under electro-magnetic control

Landscapes

  • Impact Printers (AREA)

Abstract

PURPOSE:To permit a high-speed printing to be performed by hastening the releasing of an armature by using a system in which part of the core of a spring charge type dot printing head is supported by a supporting spring in such a way as to enable a magnet to move when being energized. CONSTITUTION:When energizing an electromagnetic coil wound around a core 1, the core is magnetized to erase a magnetic flux resulting from a permanent magnet 5. By this, an armature 8 adsorbed on the first yoke 4 is released from attraction force and moved upwardly by the biasing force of the spring 7 but moves to the left side against the biasing force of the supporting springs 2a and 2b due to its repulsion with pole S produced at one end of the armature 8. Therefore, air gap in magnetic path formed by the permanent magnet 5 is increased abruptly and thereby the releasing of the armature 8 is hastened.
JP8378981A 1981-06-02 1981-06-02 Dot printing head Granted JPS57199668A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8378981A JPS57199668A (en) 1981-06-02 1981-06-02 Dot printing head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8378981A JPS57199668A (en) 1981-06-02 1981-06-02 Dot printing head

Publications (2)

Publication Number Publication Date
JPS57199668A true JPS57199668A (en) 1982-12-07
JPS625072B2 JPS625072B2 (en) 1987-02-03

Family

ID=13812404

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8378981A Granted JPS57199668A (en) 1981-06-02 1981-06-02 Dot printing head

Country Status (1)

Country Link
JP (1) JPS57199668A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008054791A (en) * 2006-08-30 2008-03-13 Sanwa Kogyo Kk Leg part of chair and chair

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008054791A (en) * 2006-08-30 2008-03-13 Sanwa Kogyo Kk Leg part of chair and chair

Also Published As

Publication number Publication date
JPS625072B2 (en) 1987-02-03

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