JPS6458557A - Printing hammer drive device - Google Patents

Printing hammer drive device

Info

Publication number
JPS6458557A
JPS6458557A JP21620487A JP21620487A JPS6458557A JP S6458557 A JPS6458557 A JP S6458557A JP 21620487 A JP21620487 A JP 21620487A JP 21620487 A JP21620487 A JP 21620487A JP S6458557 A JPS6458557 A JP S6458557A
Authority
JP
Japan
Prior art keywords
hammer arm
electromagnetic coil
back stop
attraction force
printing
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
JP21620487A
Other languages
Japanese (ja)
Other versions
JPH0771855B2 (en
Inventor
Makoto Kurosawa
Kazuo Sugano
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.)
Koki Holdings Co Ltd
Original Assignee
Hitachi Koki 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 Hitachi Koki Co Ltd filed Critical Hitachi Koki Co Ltd
Priority to JP62216204A priority Critical patent/JPH0771855B2/en
Publication of JPS6458557A publication Critical patent/JPS6458557A/en
Publication of JPH0771855B2 publication Critical patent/JPH0771855B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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 accelerate printing speed by arranging a hammer arm with a fixed printing element between cores with an electromagnetic coil, causing the hammer arm to be attracted and held to a back stop by means of a permanent magnet, and energizing the electromagnetic coil to release the hammer arm for printing. CONSTITUTION:A magnetic flux generated by a permanent coil 11 runs to a core 13 through a yoke 15, a hammer arm 16, a back stop 18 and an attraction part 19. The hammer arm 16 sags in the reduced thickness part 17 to be attracted and held to an attraction part 19 by means of a magnetic attraction force. When an electromagnetic coil 14 is excited, the magnetic attraction force is cancelled, and thereby the hammer arm 16 is released to send wire 20 flying. Thus dots are printed on paper by means of the tip of wire 20. Under the above constitution, no deterioration of the attraction force occurs even when the number of mounted hammers is increased, and the high speed characteristic is maintained. Further, the precision is easily secured due to the design to determine the sag of the hammer arm 16 using only the back stop.
JP62216204A 1987-08-28 1987-08-28 Printing hammer drive Expired - Fee Related JPH0771855B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62216204A JPH0771855B2 (en) 1987-08-28 1987-08-28 Printing hammer drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62216204A JPH0771855B2 (en) 1987-08-28 1987-08-28 Printing hammer drive

Publications (2)

Publication Number Publication Date
JPS6458557A true JPS6458557A (en) 1989-03-06
JPH0771855B2 JPH0771855B2 (en) 1995-08-02

Family

ID=16684904

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62216204A Expired - Fee Related JPH0771855B2 (en) 1987-08-28 1987-08-28 Printing hammer drive

Country Status (1)

Country Link
JP (1) JPH0771855B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102626971A (en) * 2012-05-03 2012-08-08 西南铝业（集团）有限责任公司 Method for manufacturing rubber roll of stretching straightening machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60183169A (en) * 1984-03-01 1985-09-18 Matsushita Electric Works Ltd Magnet device for dot printer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60183169A (en) * 1984-03-01 1985-09-18 Matsushita Electric Works Ltd Magnet device for dot printer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102626971A (en) * 2012-05-03 2012-08-08 西南铝业（集团）有限责任公司 Method for manufacturing rubber roll of stretching straightening machine

Also Published As

Publication number Publication date
JPH0771855B2 (en) 1995-08-02

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees