Recording apparatus

Details Recording apparatus Recording apparatus

1990-05-31

1991-12-24

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, 346140R, 400322, 400903, H02P 800

Patent

active

050756095

ABSTRACT:
A recording apparatus in which the movement of a recording head for recording scanning is effected includes a carriage carrying the recording head thereon, a step motor for moving the carriage, a linear encoder for detecting the amount of movement of the carriage, the linear encoder being installed over the movement range of the carriage and generating pulse signals in conformity with the amount of movement of the carriage, a controller for counting the pulse signals from the linear encoder and outputting a control signal for the starting and stoppage of the carriage in conformity with the count value, and current switch-over device for switching over and controlling an energization current supplied to the coil of the step motor in conformity with the pulse signals from the linear encoder. The current switch-over device starts the switch-over control of the energization current by an energization control signal from the controller, and stops the switch-over control of the energization current by a stop control signal.

REFERENCES:
patent: 4143980 (1979-03-01), Giebler et al.
patent: 4602882 (1986-07-01), Akazawa
patent: 4628239 (1986-12-01), Everett, Jr.
patent: 4693618 (1987-09-01), Hanagata
patent: 4838717 (1989-06-01), Ogura
patent: 4926196 (1990-05-01), Mizoguchi et al.
patent: 4928050 (1990-05-01), Torisawa et al.
patent: 4963808 (1990-10-01), Torisawa et al.
patent: 5029264 (1991-07-01), Ito et al.
English Abstracts of Japan, 62-193548, 8/1987.
English Abstracts of Japan, 62-193549, 8/1987.

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