NL7604474A - Electric typewriter hammer driving mechanism - has coil supplied with pulses fixed to hammer tip working in magnetic field - Google Patents

Electric typewriter hammer driving mechanism - has coil supplied with pulses fixed to hammer tip working in magnetic field

Info

Publication number
NL7604474A
NL7604474A NL7604474A NL7604474A NL7604474A NL 7604474 A NL7604474 A NL 7604474A NL 7604474 A NL7604474 A NL 7604474A NL 7604474 A NL7604474 A NL 7604474A NL 7604474 A NL7604474 A NL 7604474A
Authority
NL
Netherlands
Prior art keywords
hammer
magnetic field
driving mechanism
coil supplied
electric typewriter
Prior art date
Application number
NL7604474A
Other languages
Dutch (nl)
Original Assignee
Tealtronic Nederland B V
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 Tealtronic Nederland B V filed Critical Tealtronic Nederland B V
Priority to NL7604474A priority Critical patent/NL7604474A/en
Publication of NL7604474A publication Critical patent/NL7604474A/en

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
    • B41J9/44—Control for hammer-impression mechanisms
    • B41J9/48—Control for hammer-impression mechanisms for deciding or adjusting hammer-drive energy
    • 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)

Abstract

The hammer driving mechanism is particularly for use in a typewriter etc., where the hammer strikes a selected character in front of it under the effect of a magnetic field so as to print a sheet of paper moving past it. The hammer tip (11) has a coil fixed to it (31) whose windings are at right angles to the lines of force of the magnetic field. In the rest position these windings lie at least partly in the magnetic field. Current impulses are fed to the coil, so as to move the hammer in the plane of the windings under the effect of Lorentz force. Guides direct the hammer along a predetermined path in the direction of the Lorentz force, and means are provided to return it to the rest position.
NL7604474A 1976-04-27 1976-04-27 Electric typewriter hammer driving mechanism - has coil supplied with pulses fixed to hammer tip working in magnetic field NL7604474A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7604474A NL7604474A (en) 1976-04-27 1976-04-27 Electric typewriter hammer driving mechanism - has coil supplied with pulses fixed to hammer tip working in magnetic field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7604474A NL7604474A (en) 1976-04-27 1976-04-27 Electric typewriter hammer driving mechanism - has coil supplied with pulses fixed to hammer tip working in magnetic field

Publications (1)

Publication Number Publication Date
NL7604474A true NL7604474A (en) 1977-10-31

Family

ID=19826083

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7604474A NL7604474A (en) 1976-04-27 1976-04-27 Electric typewriter hammer driving mechanism - has coil supplied with pulses fixed to hammer tip working in magnetic field

Country Status (1)

Country Link
NL (1) NL7604474A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0490643A2 (en) * 1990-12-11 1992-06-17 Xerox Corporation Impact printers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0490643A2 (en) * 1990-12-11 1992-06-17 Xerox Corporation Impact printers
EP0490643A3 (en) * 1990-12-11 1992-10-21 Xerox Corporation Impact printers

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