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US 2006/0125430 A1Published application
Image forming apparatus
AssigneeOki Data Corporation
InventorKoji Kato
Life of this patent
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Abstract
A position detecting unit detects rotational position information of a plurality of motors. A phase difference control unit delays an excitation phase switching pulse of at least one of the motors by a predetermined amount on the basis of the rotational position information of the motors and predetermined time difference information.
Claims10
An image forming apparatus having a plurality of motors which are rotated in response to phase switching signals, comprising:
- a position detecting unit which detects a rotational position of each of said plurality of motors;
- a time lag information calculating unit which calculates time lag information for changing a phase switching time between said motors;
- and
- a phase difference control unit which delays the phase switching signal of at least one of said plurality of motors from the rotational position information of each of said motors and said time lag information on the basis of said time lag information and outputs the delayed signal.
1 more element
Dependencies are inferred from the claim text.