US3335659A - Print hammer drive mechanism for high-speed printers - Google Patents

Print hammer drive mechanism for high-speed printers Download PDF

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Publication number
US3335659A
US3335659A US385914A US38591464A US3335659A US 3335659 A US3335659 A US 3335659A US 385914 A US385914 A US 385914A US 38591464 A US38591464 A US 38591464A US 3335659 A US3335659 A US 3335659A
Authority
US
United States
Prior art keywords
hammer
print
print hammer
magnetic core
magnet
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 - Lifetime
Application number
US385914A
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English (en)
Inventor
Schacht Guenter
Spieth Eberhard
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 US3335659A publication Critical patent/US3335659A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41J9/02—Hammers; Arrangements thereof
    • B41J9/10—Hammers; Arrangements thereof of more than one hammer, e.g. one for each character position
    • 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

Definitions

  • this force has superimposed thereon a second force which is caused by the fact that the polar faces 27, 28 of the magnet yokes 22 and 23 and of the armature yokes 2S and 26 respectively are inclined with respect to the armature axis.
  • the lines of force which extend vertically between the polar surfaces facing each other but are inclined with respect to the print hammer axis produce an additional force component in the horizontal direction which increases with the increasing hammer path while at the same time the air gap decreases.
  • the print hammer drive mechanism of this invention may be mounted both in print units using a type drum and in printers employing a type chain or a type bar.
  • FIG. 3 shows a type cylinder printer in which, in a row corresponding to a line to be printed, a print hammer It with its associated drive mechanism is provided for each printing position.
  • operator means for impelling said hammer from said rest position to said impact position whereby said hammer produces an imprint on a print medium or the like and rebounds toward said rest position comprising (d) a first magnetic core means comprising a U-shaped magnetic core member having spaced apart polar faces along the path of the hammer fixedly located proximate and to one side of said path,

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Impact Printers (AREA)
  • Printers Characterized By Their Purpose (AREA)
US385914A 1963-08-24 1964-07-29 Print hammer drive mechanism for high-speed printers Expired - Lifetime US3335659A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEJ24310A DE1237816B (de) 1963-08-24 1963-08-24 Druckhammerantrieb fuer Schnelldrucker

Publications (1)

Publication Number Publication Date
US3335659A true US3335659A (en) 1967-08-15

Family

ID=7201771

Family Applications (1)

Application Number Title Priority Date Filing Date
US385914A Expired - Lifetime US3335659A (en) 1963-08-24 1964-07-29 Print hammer drive mechanism for high-speed printers

Country Status (6)

Country Link
US (1) US3335659A (de)
CH (1) CH413456A (de)
DE (1) DE1237816B (de)
FR (1) FR1413951A (de)
GB (1) GB1010983A (de)
SE (1) SE322075B (de)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3507213A (en) * 1966-10-14 1970-04-21 English Electric Computers Ltd High speed flying hammer solenoid systems
US3524155A (en) * 1968-01-02 1970-08-11 Honeywell Inc Slotted-pole solenoid
DE2152254A1 (de) * 1970-10-20 1972-04-27 Honeywell Bull Soc Ind Endloses metallisches Typentraegerband
US3707122A (en) * 1970-07-13 1972-12-26 Peripheral Dynamics Print hammer mechanism with magnetic reinforcement to cath hammer
US3748613A (en) * 1971-09-17 1973-07-24 Honeywell Bull Soc Ind Print device for a printer
US3941052A (en) * 1974-04-29 1976-03-02 Shugart Associates, Inc. Print hammer apparatus with angularly disposed mating hammer and pole faces to prevent contact bounce
US4003013A (en) * 1975-02-25 1977-01-11 Simms Group Research & Development Limited Electromagnetic devices
US4004505A (en) * 1973-11-06 1977-01-25 Compagnie Honeywell Bull (Societe Anonyme) Electromagnetic striker mechanism for a printer
US4005650A (en) * 1974-01-07 1977-02-01 Computer Peripherals, Inc. Print hammer
US4062285A (en) * 1975-10-15 1977-12-13 Xerox Corporation Hammer driver controller for impact printers
US4134691A (en) * 1976-01-05 1979-01-16 Matschke General Research Company, Inc. Printing head
US4218148A (en) * 1976-01-05 1980-08-19 Printer Associates Matrix printing cell and head assembly
US4236842A (en) * 1978-08-03 1980-12-02 A. B. Dick Company Hammer support for rotary printing apparatus
US4308794A (en) * 1978-07-13 1982-01-05 Contardo Adamoli Hammer assembly for a serial typing device
US4386565A (en) * 1979-11-06 1983-06-07 Shinshu Seiki Kabushiki Kaisha Printer apparatus using electromagnet
US4412197A (en) * 1981-04-11 1983-10-25 International Business Machines Corporation Electromagnetic ram actuator
US4454809A (en) * 1983-04-08 1984-06-19 Teletype Corporation Print hammer mechanism
US4493253A (en) * 1983-11-23 1985-01-15 Ncr Canada Ltd. Variable impact printing means
US4522122A (en) * 1983-05-03 1985-06-11 Ncr Canada Ltd - Ncr Canada Ltee Fast impact hammer for high speed printer
US4852481A (en) * 1988-07-14 1989-08-01 L. James Hubbard Print hammer mechanism

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3711804A (en) * 1971-04-15 1973-01-16 Ibm Magnetically restorable high speed print hammer
DE3065513D1 (en) * 1979-06-29 1983-12-15 Ibm Electromagnetic device for driving a print element

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843243A (en) * 1955-08-09 1958-07-15 Sperry Rand Corp Printing device
US2997632A (en) * 1958-09-12 1961-08-22 Jr Francis H Shepard Hammer firing circuit for high speed printer
US3172353A (en) * 1963-06-17 1965-03-09 Data Products Corp Variable force hammer high speed printer
US3195453A (en) * 1962-12-26 1965-07-20 Potter Instrument Co Inc Magnetically actuated print hammer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1022605B (de) 1955-08-09 1958-01-16 Sperry Rand Corp Hilfskraftangetriebene Typenradschreibmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843243A (en) * 1955-08-09 1958-07-15 Sperry Rand Corp Printing device
US2997632A (en) * 1958-09-12 1961-08-22 Jr Francis H Shepard Hammer firing circuit for high speed printer
US3195453A (en) * 1962-12-26 1965-07-20 Potter Instrument Co Inc Magnetically actuated print hammer
US3172353A (en) * 1963-06-17 1965-03-09 Data Products Corp Variable force hammer high speed printer

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3507213A (en) * 1966-10-14 1970-04-21 English Electric Computers Ltd High speed flying hammer solenoid systems
US3524155A (en) * 1968-01-02 1970-08-11 Honeywell Inc Slotted-pole solenoid
US3707122A (en) * 1970-07-13 1972-12-26 Peripheral Dynamics Print hammer mechanism with magnetic reinforcement to cath hammer
DE2152254A1 (de) * 1970-10-20 1972-04-27 Honeywell Bull Soc Ind Endloses metallisches Typentraegerband
US3748613A (en) * 1971-09-17 1973-07-24 Honeywell Bull Soc Ind Print device for a printer
US4004505A (en) * 1973-11-06 1977-01-25 Compagnie Honeywell Bull (Societe Anonyme) Electromagnetic striker mechanism for a printer
US4005650A (en) * 1974-01-07 1977-02-01 Computer Peripherals, Inc. Print hammer
US3941052A (en) * 1974-04-29 1976-03-02 Shugart Associates, Inc. Print hammer apparatus with angularly disposed mating hammer and pole faces to prevent contact bounce
US4003013A (en) * 1975-02-25 1977-01-11 Simms Group Research & Development Limited Electromagnetic devices
US4062285A (en) * 1975-10-15 1977-12-13 Xerox Corporation Hammer driver controller for impact printers
US4134691A (en) * 1976-01-05 1979-01-16 Matschke General Research Company, Inc. Printing head
US4218148A (en) * 1976-01-05 1980-08-19 Printer Associates Matrix printing cell and head assembly
US4308794A (en) * 1978-07-13 1982-01-05 Contardo Adamoli Hammer assembly for a serial typing device
US4236842A (en) * 1978-08-03 1980-12-02 A. B. Dick Company Hammer support for rotary printing apparatus
US4386565A (en) * 1979-11-06 1983-06-07 Shinshu Seiki Kabushiki Kaisha Printer apparatus using electromagnet
US4412197A (en) * 1981-04-11 1983-10-25 International Business Machines Corporation Electromagnetic ram actuator
US4454809A (en) * 1983-04-08 1984-06-19 Teletype Corporation Print hammer mechanism
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
DE1237816B (de) 1967-03-30
SE322075B (de) 1970-03-23
GB1010983A (en) 1965-11-24
CH413456A (de) 1966-05-15
FR1413951A (fr) 1965-10-15

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