GB1435846A - Selective printer - Google Patents

Selective printer

Info

Publication number
GB1435846A
GB1435846A GB690274A GB690274A GB1435846A GB 1435846 A GB1435846 A GB 1435846A GB 690274 A GB690274 A GB 690274A GB 690274 A GB690274 A GB 690274A GB 1435846 A GB1435846 A GB 1435846A
Authority
GB
United Kingdom
Prior art keywords
motor
pulses
windings
type
belt
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
GB690274A
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 GB1435846A publication Critical patent/GB1435846A/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
    • B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
    • B41J1/20—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on endless bands or the like
    • 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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism

Landscapes

  • Character Spaces And Line Spaces In Printers (AREA)
  • Impact Printers (AREA)

Abstract

1435846 Automatic control of printing INTERNATIONAL BUSINESS MACHINES CORP 15 Feb 1974 [5 March 1973] 6902/74 Heading G3N A selective printer comprises a control means for a motor moving a type carrier adapted to vary the speed of the motor in accordance with variations in the value of a common source of energy for the control means and a hammer operating means so as to maintain registration between print hammers and type characters. As shown, an endless type-belt 12 carries type characters 16 on fingers 18 and is driven by a pulley 14 coupled to a stepping motor 30. A plurality of print hammers, such as 22, are electromagnetically actuated by windings 23 energized in timed relationship with marks 20 on the belt. as sensed by a photo-electric device 20 and controlled by a device 24. The motor 30 is stepped by pulses from a device 32. Since the flight-time of a print hammer is related to the voltage applied to the windings 23, the pulse rate of the pulses applied to the motor 30 is varied in correspondence by deriving the pulses from a relaxation oscillator, the charge/ discharge capacitor being fed through a voltage dependent transistor-diode circuit. A gradual initial start-up is provided by biasing the transistor by a ramp generator. The pulses are gated to the stepping-motor windings by a binary counter.
GB690274A 1973-03-05 1974-02-15 Selective printer Expired GB1435846A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00338133A US3842736A (en) 1973-03-05 1973-03-05 Print hammer registration control

Publications (1)

Publication Number Publication Date
GB1435846A true GB1435846A (en) 1976-05-19

Family

ID=23323540

Family Applications (1)

Application Number Title Priority Date Filing Date
GB690274A Expired GB1435846A (en) 1973-03-05 1974-02-15 Selective printer

Country Status (7)

Country Link
US (1) US3842736A (en)
JP (1) JPS5340421B2 (en)
CA (1) CA981588A (en)
DE (1) DE2404799C2 (en)
FR (1) FR2220385B1 (en)
GB (1) GB1435846A (en)
IT (1) IT1003480B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126380A (en) * 1982-09-01 1984-03-21 Usm Corp Variable rate component insertion machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834306A (en) * 1973-03-26 1974-09-10 Ibm Print density control
DD125620A1 (en) * 1976-03-29 1977-05-04
DE3929196A1 (en) * 1989-09-02 1991-03-07 Apag Elektronik Ag Duebendorf Vehicle windscreen wiper timing dependent on deg. of wetting - utilises measurement of resistance to initial sweep if blade for control of interval-setting pulse generator
CN111817610B (en) * 2020-06-03 2021-11-02 中国人民解放军海军工程大学 Motor gating device for multiplexing motor driving energy and working method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3183830A (en) * 1960-12-27 1965-05-18 Rca Corp Print registration control means in high speed printers
US3513774A (en) * 1968-07-01 1970-05-26 Ibm Printer hammer compensation
US3636867A (en) * 1969-06-28 1972-01-25 Honeywell Inf Systems Print timing and speed control circuit for high-speed printers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126380A (en) * 1982-09-01 1984-03-21 Usm Corp Variable rate component insertion machine
US4464833A (en) * 1982-09-01 1984-08-14 Usm Corporation Variable rate control logic for component insertion machine

Also Published As

Publication number Publication date
JPS5340421B2 (en) 1978-10-27
DE2404799C2 (en) 1982-04-08
JPS49121444A (en) 1974-11-20
US3842736A (en) 1974-10-22
DE2404799A1 (en) 1974-09-19
IT1003480B (en) 1976-06-10
FR2220385B1 (en) 1979-01-05
FR2220385A1 (en) 1974-10-04
CA981588A (en) 1976-01-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee