JPS5772869A - Dot printing head - Google Patents

Dot printing head

Info

Publication number
JPS5772869A
JPS5772869A JP14816680A JP14816680A JPS5772869A JP S5772869 A JPS5772869 A JP S5772869A JP 14816680 A JP14816680 A JP 14816680A JP 14816680 A JP14816680 A JP 14816680A JP S5772869 A JPS5772869 A JP S5772869A
Authority
JP
Japan
Prior art keywords
spring hammer
core
armature
coil
ring
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
JP14816680A
Other languages
Japanese (ja)
Other versions
JPS6013829B2 (en
Inventor
Minoru Isobe
Ko Kikuchi
Shoichi Watanabe
Tadashi Kodama
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 JP14816680A priority Critical patent/JPS6013829B2/en
Publication of JPS5772869A publication Critical patent/JPS5772869A/en
Publication of JPS6013829B2 publication Critical patent/JPS6013829B2/en
Expired 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 prevent stress concentration and prolong a life, in a printing head carry out printing by a mechanism wherein a spring hammer is attracted by a permanent magnet and magnetic flux is erased by magnetically exciting an electromagnet to move the spring hammer, by providing a permeation pore to central part of the spring hammer. CONSTITUTION:A spring hammer 7 is provided from a ring peripheral flange part in an almost centripetal fashion and a magnetic core having a coil 4 wound therearound is arranged to a position corresponding to each spring hammer 7 and a ring like magnetic passage is constituted by said core, a ring like permanent magnet 3 and the spring hammer 7. The spring hammer 7 is attracted to the core in such a condition that current is not passed through the coil 4 and, by passing current through the coil to erase magnetic flux, parted from the core to move a wire of a leading end of an armature 8 contacted to an upper surface thereof and, thereby, printing is carried out. In this time, stress is concentrated to a contact part of the armature 8 and the spring hammer 7 to often generate damage but, if a permeation pore 18 is provided to a peripheral part from the contact part with the armature 8, stress concentration can be prevented.
JP14816680A 1980-10-24 1980-10-24 dot print head Expired JPS6013829B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14816680A JPS6013829B2 (en) 1980-10-24 1980-10-24 dot print head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14816680A JPS6013829B2 (en) 1980-10-24 1980-10-24 dot print head

Publications (2)

Publication Number Publication Date
JPS5772869A true JPS5772869A (en) 1982-05-07
JPS6013829B2 JPS6013829B2 (en) 1985-04-09

Family

ID=15446718

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14816680A Expired JPS6013829B2 (en) 1980-10-24 1980-10-24 dot print head

Country Status (1)

Country Link
JP (1) JPS6013829B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59164736U (en) * 1983-04-19 1984-11-05 沖電気工業株式会社 wire dot print head

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS646134U (en) * 1987-06-29 1989-01-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59164736U (en) * 1983-04-19 1984-11-05 沖電気工業株式会社 wire dot print head
JPH0234038Y2 (en) * 1983-04-19 1990-09-12

Also Published As

Publication number Publication date
JPS6013829B2 (en) 1985-04-09

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