Carriage position error detection in a serial printer

Details Carriage position error detection in a serial printer Carriage position error detection in a serial printer

1989-12-28

1992-09-22

Wiecking, David A.

Typewriting machines

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

400 74, B41J 1930

Patent

active

051492156

ABSTRACT:
A serial printer includes a carrier motor which moves a printing head; a signal generator for supplying an output signal to the carrier motor to control the carrier motor to drive the printing head; a microprocessor for controlling operation of the signal generator; a counter for counting movement of the printing head in response to the output signal from the signal generator; and a malfunction detector for detecting a malfunction when the value of the counter reaches a predetermined count and for resetting the microprocessor in response thereto.

REFERENCES:
patent: 4628239 (1986-12-01), Everett

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