Printer carriage homing mechanism

Details Printer carriage homing mechanism Printer carriage homing mechanism

1990-06-12

1992-09-15

Wiecking, David A.

Typewriting machines

Control of print position along print-line by signal...

400322, 4005834, 400903, B41J 1930

Patent

active

051471434

ABSTRACT:
A printer which includes a position controller for moving a printing head to a predetermined initial position by driving a stepping motor during initial processing operation, and a current controller for supplying a second current to the stepping motor to spontaneously start the stepping motor. Since the stepping motor is driven by the second current which is smaller than a first current to be supplied during printing, the noise to be produced during the initial homing operation can be minimized.

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patent: 4538933 (1985-09-01), Imaizumi et al.
patent: 4693618 (1987-09-01), Hanagata
patent: 4869610 (1989-09-01), Nishizawa et al.
patent: 5033889 (1991-07-01), Carney
IBM Tech Disc Bull; "Stepper Motor Drive for a Printer Escapement System"; vol. 28, No. 2, pp. 779-781; Jul. 1985.
IBM Tech Disc Bull; "Extending the Speed Range for a Permanent Magnet Stepper Motor"; vol. 28, No. 11, pp. 4914-4915; Apr. 1986.
IBM Tech Disc Bull; "Method for Reducing Acoustic Noise"; vol. 29, No. 3, pp. 1435-1438; Aug. 1986.

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