JPS552019A - Printing hammer - Google Patents

Printing hammer

Info

Publication number
JPS552019A
JPS552019A JP7440978A JP7440978A JPS552019A JP S552019 A JPS552019 A JP S552019A JP 7440978 A JP7440978 A JP 7440978A JP 7440978 A JP7440978 A JP 7440978A JP S552019 A JPS552019 A JP S552019A
Authority
JP
Japan
Prior art keywords
printing
fixed
armature
plate spring
spring
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
JP7440978A
Other languages
Japanese (ja)
Inventor
Tokikazu Onodera
Masanori Morita
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 JP7440978A priority Critical patent/JPS552019A/en
Publication of JPS552019A publication Critical patent/JPS552019A/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 provide a printing hammer, wherein a plate spring has a trapezoid shape, the width of a print action end of the plate spring being smaller than the width of a fixed end of the plate spring, so that excessive force generated during driving of a hammer bank will be absorbed to improve printing quality during high speed printing. CONSTITUTION:The present printing hammer comprises a magnet 4, a york 5, release coils 3, an armature 15 including a movable piece 14 fixed by a printing pin 2, a clamping plate 16 for securing the armature 15, and a screw 6. A fixing platform 12 with the armature 15 fixed thereto is fixed to a supporting spring body which will be driven by a reciprocal movement generator. Since part of the arma ture 15 includes the spring 1 having a trapezoid shape, excessive horizontal force produced at the time of start or stop of driving of the supporting spring body acts on the trapezoidal plate spring and will hardly be transmitted to the acting end, and the excessive vertical movement will be prevented.
JP7440978A 1978-06-19 1978-06-19 Printing hammer Pending JPS552019A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7440978A JPS552019A (en) 1978-06-19 1978-06-19 Printing hammer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7440978A JPS552019A (en) 1978-06-19 1978-06-19 Printing hammer

Publications (1)

Publication Number Publication Date
JPS552019A true JPS552019A (en) 1980-01-09

Family

ID=13546356

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7440978A Pending JPS552019A (en) 1978-06-19 1978-06-19 Printing hammer

Country Status (1)

Country Link
JP (1) JPS552019A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5780069A (en) * 1980-09-11 1982-05-19 Mannesmann Tally Corp Dot printing mechanism device for dot-matrix-line printer
JPS57191079A (en) * 1981-05-20 1982-11-24 Seikosha Co Ltd Printer head

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5780069A (en) * 1980-09-11 1982-05-19 Mannesmann Tally Corp Dot printing mechanism device for dot-matrix-line printer
JPS57191079A (en) * 1981-05-20 1982-11-24 Seikosha Co Ltd Printer head

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