发明名称 METHOD AND APPARATUS FOR CONTROLLING DRIVING OF STEPPING MOTOR, DOCUMENT CONVEYING APPARATUS, AND IMAGE FORMING APPARATUS
摘要 PROBLEM TO BE SOLVED: To provide a method and an apparatus for controlling driving of a stepping motor wherein vibration at a start time and step-out due to load variation during acceleration driving can be suppressed by simple current switching control, to provide an automatic document conveying apparatus, and to provide an image forming apparatus. SOLUTION: A driving current value at the start time of a stepping motor is made lower than a driving current value during motor acceleration driving. Therefore, vibration at the start time of the motor can be reduced as compared with cases where the these driving current values are equal to each other. Further, since the driving current value during acceleration driving is made higher than the driving current value at the start time, it is possible to suppress the motor's stepping out due to variation in load on the motor during acceleration. COPYRIGHT: (C)2007,JPO&INPIT
申请公布号 JP2007159205(A) 申请公布日期 2007.06.21
申请号 JP20050348296 申请日期 2005.12.01
申请人 RICOH CO LTD 发明人 SANO MOTOYA;FUJII TAKASHI;KIMURA NORIO;KOSUGA YASUO;KITAOKA SHINYA;NAGANO TATSUAKI;TOBINAGA HIDEKI
分类号 H02P8/12;B65H5/06;G03G15/00;H02P8/18;H02P8/22 主分类号 H02P8/12
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