GB1010983A - Improvements relating to electromagnetically operated drives for print hammers - Google Patents

Improvements relating to electromagnetically operated drives for print hammers

Info

Publication number
GB1010983A
GB1010983A GB32653/64A GB3265364A GB1010983A GB 1010983 A GB1010983 A GB 1010983A GB 32653/64 A GB32653/64 A GB 32653/64A GB 3265364 A GB3265364 A GB 3265364A GB 1010983 A GB1010983 A GB 1010983A
Authority
GB
United Kingdom
Prior art keywords
hammer
impression
hammers
type
machines
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
GB32653/64A
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
Publication of GB1010983A publication Critical patent/GB1010983A/en
Expired 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
    • B41J9/02—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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Impact Printers (AREA)
  • Printers Characterized By Their Purpose (AREA)

Abstract

1,010,983. Selective printing. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug. 11, 1964 [Aug. 24, 1963], No. 32653/64. Heading B6F. Type-wheel machines; type-band machines; type-bar machines; hammer-impression mechanism; electric signal input arrangements.- A high-speed selective printer used for output units of data processing machines and having types mounted on a rotary-type carrier, a chain or type bars, is provided with an electromagnetically operated drive mechanism for a plurality of hammers 1 comprising a corresponding plurality of electromagnets 11 for each of which the print hammers 1 are adapted to form an armature in that the hammers carry two armature yokes 12, 13 of soft magnetic material, said electromagnets exerting on said hammers a force in the impression direction. Each hammer 1 comprises a bar of rectangular cross-section having a hammer head on its front end and the hammer is mounted on a pair of leaf springs 3, 4 serving also to return the hammer to its rest position after impression. The hammer also carries two U- shaped armature yokes 12, 13, the polar surfaces 14 are inclined and co-operate with like polar surfaces 15 of the electromagnet 11 having coils 16, 17 energized with current pulses J2 and J1 respectively. The pulse J1 is of short duration but higher amplitude, whereas the pulse J2 is of longer duration and is ineffective by itself to displace the hammer into its printing position. For impression, both coils 16, 17 are energized simultaneously by said pulses J1 and J2, but when the short pulse J1 terminates on completion of impression the pulse J2 produces a magnetic force retarding the return movement of the hammer, thus preventing rebound. The return movement is limited by a buffer stop 9 having a mass equal to the hammer 1 and clamped to an elastic separator 10.
GB32653/64A 1963-08-24 1964-08-11 Improvements relating to electromagnetically operated drives for print hammers Expired GB1010983A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEJ24310A DE1237816B (en) 1963-08-24 1963-08-24 Print hammer drive for high-speed printer

Publications (1)

Publication Number Publication Date
GB1010983A true GB1010983A (en) 1965-11-24

Family

ID=7201771

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32653/64A Expired GB1010983A (en) 1963-08-24 1964-08-11 Improvements relating to electromagnetically operated drives for print hammers

Country Status (6)

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

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1179419A (en) * 1966-10-14 1970-01-28 Int Computers Ltd Flying Hammer Solenoid Systems for High Speed Printers
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
FR2109483A6 (en) * 1970-10-20 1972-05-26 Honeywell Bull
US3711804A (en) * 1971-04-15 1973-01-16 Ibm Magnetically restorable high speed print hammer
FR2153627A5 (en) * 1971-09-17 1973-05-04 Honeywell Bull
FR2250315A5 (en) * 1973-11-06 1975-05-30 Honeywell Bull Soc Ind
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
US4218148A (en) * 1976-01-05 1980-08-19 Printer Associates Matrix printing cell and head assembly
US4134691A (en) * 1976-01-05 1979-01-16 Matschke General Research Company, Inc. Printing head
IT1159898B (en) * 1978-07-13 1987-03-04 Olivetti & Co Spa PRINTING DEVICE FOR WRITING MACHINE OR SIMILAR OFFICE MACHINES
US4236842A (en) * 1978-08-03 1980-12-02 A. B. Dick Company Hammer support for rotary printing apparatus
EP0021335B1 (en) * 1979-06-29 1983-11-09 International Business Machines Corporation Electromagnetic device for driving a print element
JPS5667907A (en) * 1979-11-06 1981-06-08 Seiko Epson Corp Mechanism of electromagnet
DE3114834A1 (en) * 1981-04-11 1982-11-04 Ibm Deutschland Gmbh, 7000 Stuttgart ELECTROMAGNETIC STOOL DRIVE
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

Family Cites Families (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

Also Published As

Publication number Publication date
SE322075B (en) 1970-03-23
US3335659A (en) 1967-08-15
FR1413951A (en) 1965-10-15
DE1237816B (en) 1967-03-30
CH413456A (en) 1966-05-15

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