JPS55148178A - Printing hammer - Google Patents

Printing hammer

Info

Publication number
JPS55148178A
JPS55148178A JP5554079A JP5554079A JPS55148178A JP S55148178 A JPS55148178 A JP S55148178A JP 5554079 A JP5554079 A JP 5554079A JP 5554079 A JP5554079 A JP 5554079A JP S55148178 A JPS55148178 A JP S55148178A
Authority
JP
Japan
Prior art keywords
movable plate
yoke
magnetic attraction
attraction force
attracting
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
JP5554079A
Other languages
Japanese (ja)
Inventor
Tokikazu Onodera
Sadayuki Mihashi
Keiji Nakamura
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP5554079A priority Critical patent/JPS55148178A/en
Publication of JPS55148178A publication Critical patent/JPS55148178A/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
    • B41J9/00—Hammer-impression mechanisms
    • B41J9/26—Means for operating hammers to effect impression
    • B41J9/38—Electromagnetic means

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Impact Printers (AREA)

Abstract

PURPOSE:To eliminate the adjustment of an air gap formed between a movable plate and an attracting yoke with a simple construction by a method wherein the movable plate and a part of the yoke are joined by the magnetic attraction force to allow the part of the yoke to make pivotally coaxial against the movable plate. CONSTITUTION:When the current is not flowing in the relay coil 11, a yoke 12 is attracting the other side of the end having a printing wire 18 of the movable plate 22. In this case, the magnetic attraction force is actuated on the contact surface of the point section 21a of the yoke 21, the movable plate 22 and the yoke 12 to rotate the movable plate 22 around the center thereof to allow to compress the coil spring 19. Besides, when the current is flowing in the relay coil 11 to release the magnetic attraction force acting between the yoke 12 and the movable plate 22, the movable plate 22 is rotating to the direction pushing to the coil spring 19 pivotally around the contracting surface between the yoke 21 and the movable plate 22 to impact with the printing wire 18.
JP5554079A 1979-05-07 1979-05-07 Printing hammer Pending JPS55148178A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5554079A JPS55148178A (en) 1979-05-07 1979-05-07 Printing hammer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5554079A JPS55148178A (en) 1979-05-07 1979-05-07 Printing hammer

Publications (1)

Publication Number Publication Date
JPS55148178A true JPS55148178A (en) 1980-11-18

Family

ID=13001543

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5554079A Pending JPS55148178A (en) 1979-05-07 1979-05-07 Printing hammer

Country Status (1)

Country Link
JP (1) JPS55148178A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5820467A (en) * 1981-07-30 1983-02-05 Fujitsu Ltd Print head for dot printer
JPS5829680A (en) * 1981-08-17 1983-02-21 Fujitsu Ltd Printing head
JPS58166084A (en) * 1982-03-08 1983-10-01 Yokogawa Hewlett Packard Ltd Magnetic driving device in printing hammer
JPS58177372A (en) * 1982-04-12 1983-10-18 Hitachi Ltd print head
US4537520A (en) * 1982-11-16 1985-08-27 Tokyo Electric Co., Ltd. Dot printer head with reduced magnetic interference
US4575268A (en) * 1984-10-25 1986-03-11 Industrial Technology Research Institute Dot matrix printer head

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5820467A (en) * 1981-07-30 1983-02-05 Fujitsu Ltd Print head for dot printer
JPS5829680A (en) * 1981-08-17 1983-02-21 Fujitsu Ltd Printing head
JPS58166084A (en) * 1982-03-08 1983-10-01 Yokogawa Hewlett Packard Ltd Magnetic driving device in printing hammer
JPS58177372A (en) * 1982-04-12 1983-10-18 Hitachi Ltd print head
US4537520A (en) * 1982-11-16 1985-08-27 Tokyo Electric Co., Ltd. Dot printer head with reduced magnetic interference
US4575268A (en) * 1984-10-25 1986-03-11 Industrial Technology Research Institute Dot matrix printer head
JPS61108565A (en) * 1984-10-25 1986-05-27 財団法人工業技術研究院 dot matrix printing head

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