GB1417677A - Printer positioning system - Google Patents

Printer positioning system

Info

Publication number
GB1417677A
GB1417677A GB1904074A GB1904074A GB1417677A GB 1417677 A GB1417677 A GB 1417677A GB 1904074 A GB1904074 A GB 1904074A GB 1904074 A GB1904074 A GB 1904074A GB 1417677 A GB1417677 A GB 1417677A
Authority
GB
United Kingdom
Prior art keywords
motor
pulse
type carrier
character
character locations
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
GB1904074A
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 GB1417677A publication Critical patent/GB1417677A/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
    • B41J1/22—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection
    • B41J1/32—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection the plane of the type or die face being parallel to the axis of rotation, e.g. with type on the periphery of cylindrical carriers
    • 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)
  • Control Of Stepping Motors (AREA)

Abstract

1417677 Printers INTERNATIONAL BUSINESS MACHINES CORP 1 May 1974 [27 June 1973] 19040/74 Heading G4H [Also in Division H2] A printer positioning system comprises a type carrier with character locations equally spaced about an axis of rotation, a stepper motor to rotate the type carrier, and a motor control circuit, the number of steps between character locations being equal to the number of phases of the motor. As disclosed, the motor has 4 phases and rotates 2 degrees per step, the character locations being spaced at 8 degrees, and the type carrier has 3 sets of 15 character locations each, for printing on cheques. N, S, E and W windings of the motor are energized in pairs in the sequence NE, SE, SW, NW by a Grey code counter 39 driven by an oscillator 36 while a "run" pulse 41 is present, the motor being initially detented in the NE position which corresponds to the centre line of a character location. However, after the second oscillator pulse, a damp pulse generator 37 drives the counter 39 back one step, from SW to SE, to damp out perturbations introduced on start up due to motor hunting. After the "run" pulse ceases, a stop pulse generator 38 produces two pulses to return the motor to the detent NE position.
GB1904074A 1973-06-27 1974-05-01 Printer positioning system Expired GB1417677A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US37422573A 1973-06-27 1973-06-27

Publications (1)

Publication Number Publication Date
GB1417677A true GB1417677A (en) 1975-12-17

Family

ID=23475864

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1904074A Expired GB1417677A (en) 1973-06-27 1974-05-01 Printer positioning system

Country Status (11)

Country Link
JP (1) JPS5023937A (en)
AU (1) AU6857174A (en)
CA (1) CA1000225A (en)
CH (1) CH564426A5 (en)
DE (1) DE2430455A1 (en)
ES (1) ES427420A1 (en)
FR (1) FR2234989B1 (en)
GB (1) GB1417677A (en)
IT (1) IT1010159B (en)
NL (1) NL7407752A (en)
SE (1) SE389210B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3327757A1 (en) * 1982-09-03 1984-03-15 Hitachi, Ltd., Tokyo METHOD FOR POSITIONING A POSITIONING DEVICE AND DEVICE FOR POSITIONING A DRIVEN OBJECT

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2428667A1 (en) * 1978-06-16 1980-01-11 Pohlig Heckel Bleichert Coking coal charge stamping plant - with reciprocating central group and static end groups of stampers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3327757A1 (en) * 1982-09-03 1984-03-15 Hitachi, Ltd., Tokyo METHOD FOR POSITIONING A POSITIONING DEVICE AND DEVICE FOR POSITIONING A DRIVEN OBJECT
GB2126441A (en) * 1982-09-03 1984-03-21 Hitachi Ltd Positioning method and apparatus therefor

Also Published As

Publication number Publication date
NL7407752A (en) 1974-12-31
CH564426A5 (en) 1975-07-31
SE389210B (en) 1976-10-25
SE7407782L (en) 1974-12-30
JPS5023937A (en) 1975-03-14
FR2234989A1 (en) 1975-01-24
DE2430455A1 (en) 1975-03-20
FR2234989B1 (en) 1978-12-01
CA1000225A (en) 1976-11-23
AU6857174A (en) 1975-11-06
IT1010159B (en) 1977-01-10
ES427420A1 (en) 1976-07-16

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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