Method of controlling a line-feed stepping motor in a printer an

Details Method of controlling a line-feed stepping motor in a printer an Method of controlling a line-feed stepping motor in a printer an

1987-06-26

1988-09-06

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, 400568, 400902, H02P 800

Patent

active

047695854

ABSTRACT:
In a printer in which a printing medium is moved by a line-feed stepping motor during line-feed operation, and the line-feed stepping motor is stopped during printing operation and in a ready state, the line-feed stepping motor is caused to generate a first holding torque for preventing unwanted movement of the printing medium while permitting the operator to feed the printing medium manually, in the ready state of the printer, and the line-feed stepping motor is caused to generate a second holding torque which is greater than the first holding torque, during the printing operation.

REFERENCES:
patent: 3874493 (1975-04-01), Boyd
patent: 3902584 (1975-09-01), Lee et al.

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