CA948256A - Magnetically actuated and restored print hammer - Google Patents

Magnetically actuated and restored print hammer

Info

Publication number
CA948256A
CA948256A CA139,561A CA139561A CA948256A CA 948256 A CA948256 A CA 948256A CA 139561 A CA139561 A CA 139561A CA 948256 A CA948256 A CA 948256A
Authority
CA
Canada
Prior art keywords
magnetically actuated
print hammer
restored print
restored
hammer
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.)
Expired
Application number
CA139,561A
Other versions
CA139561S (en
Inventor
Francis E. Peters
Joseph P. Pawletko
Cart T. Young
Hi D. Chai
Stephen H. Mills
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of CA948256A publication Critical patent/CA948256A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/14—Pivoting armatures

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Impact Printers (AREA)
  • Electromagnets (AREA)
CA139,561A 1971-04-15 1972-04-12 Magnetically actuated and restored print hammer Expired CA948256A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13417671A 1971-04-15 1971-04-15

Publications (1)

Publication Number Publication Date
CA948256A true CA948256A (en) 1974-05-28

Family

ID=22462105

Family Applications (1)

Application Number Title Priority Date Filing Date
CA139,561A Expired CA948256A (en) 1971-04-15 1972-04-12 Magnetically actuated and restored print hammer

Country Status (7)

Country Link
US (1) US3705370A (en)
JP (1) JPS536695B1 (en)
CA (1) CA948256A (en)
DE (1) DE2215014A1 (en)
FR (1) FR2136042A5 (en)
GB (1) GB1331212A (en)
IT (1) IT946987B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2250315A5 (en) * 1973-11-06 1975-05-30 Honeywell Bull Soc Ind
US4392423A (en) * 1978-02-08 1983-07-12 Hitachi, Ltd. Printing hammer driving apparatus
JPS5536969A (en) * 1978-09-07 1980-03-14 Canon Inc Electromagnetic device
US4269117A (en) * 1979-07-11 1981-05-26 International Business Machines Corporation Electro-magnetic print hammer
US4423675A (en) * 1982-03-08 1984-01-03 Hewlett-Packard Company Magnetic circuit and print hammer
US4522122A (en) * 1983-05-03 1985-06-11 Ncr Canada Ltd - Ncr Canada Ltee Fast impact hammer for high speed printer
US4493253A (en) * 1983-11-23 1985-01-15 Ncr Canada Ltd. Variable impact printing means
US4852481A (en) * 1988-07-14 1989-08-01 L. James Hubbard Print hammer mechanism

Also Published As

Publication number Publication date
FR2136042A5 (en) 1972-12-22
US3705370A (en) 1972-12-05
JPS536695B1 (en) 1978-03-10
DE2215014A1 (en) 1972-10-26
GB1331212A (en) 1973-09-26
IT946987B (en) 1973-05-21

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