Electricity: motive power systems – Positional servo systems – Digital or numerical systems
Patent
1991-09-19
1995-05-16
Shoop, Jr., William M.
Electricity: motive power systems
Positional servo systems
Digital or numerical systems
318603, 31856818, 318592, 318597, 318696, 388811, 388829, G05B 1100
Patent
active
054163951
ABSTRACT:
The invention relates to a recording apparatus for effecting recording on a recording material. The recording apparatus comprises a stepping motor, a recording head capable of reciprocating along the recorded material by a drive force of the stepping motor to effect recording on the recording material, an angular position detector for detecting a rotated angular position of a rotor of the stepping motor, a controller for controlling drive of the stepping motor in a closed-loop manner dependent on the detected result of the detector, a controller for operating the stepping motor in a mode of stepwise motor drive, a movement position detector for detecting a movement position of the recording head, and switching circuitry for switching over between the closed-loop control and the stepwise motor drive dependent on the detected value of the movement position detector.
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Research Disclosure, "Homing Device for a Printer Carrier Driven by a Stepper Motor", p. 232, Apr. 1988.
Aichi Takao
Hiramatsu Soichi
Canon Kabushiki Kaisha
Shoop Jr. William M.
Sircus Brian
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