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公开(公告)号：US11483436B2
公开(公告)日：2022-10-25
申请号：US17312160
申请日：2020-03-11
发明人： Kiho Park , Minkeun Song , SaeJin Park , Yong-Ho You , Sungdae Kim
摘要： An image forming apparatus includes a printer engine, a sensor and a processor. The printer engine forms an image. The sensor outputs vibration information associated with a vibration of the printer engine. The processor determines whether at least one component of the printer engine has an abnormality based on the output vibration information.
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公开(公告)号：US11966188B2
公开(公告)日：2024-04-23
申请号：US17058823
申请日：2019-06-12
发明人： Yong-Ho You , Hyoungil Kim , Kiho Park , Minkeun Song
CPC分类号： G03G15/70 , B65H7/12 , G03G15/2039 , B65H2511/528 , B65H2515/70 , B65H2557/24
摘要： An image forming apparatus is provided. The image forming apparatus includes a print engine to perform an image forming job, a motor to drive the print engine, a driving circuit, to supply a power to the motor, and including a sensor to sense an amount of current of the power supplied to the motor, and a processor to analyze a frequency component of the current supplied to the motor by using the amount of current sensed by the sensor for a predetermined time, and to determine an occurrence of a jam based on the analyzed frequency component.
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公开(公告)号：US11483445B2
公开(公告)日：2022-10-25
申请号：US17414098
申请日：2020-03-13
发明人： Ji-Young Byun , Hyoungil Kim , Yong-Ho You
摘要： An image forming apparatus includes a print engine, a DC motor, a driving circuit, and a processor. The print engine forms an image. The DC motor drives the print engine. The driving circuit provides a current to the DC motor, and senses a variation of the current provided to the DC motor. The processor calculates a temperature of the DC motor based on the variation of the current flowing through the DC motor, and controls an operation of the image forming apparatus based on the calculated temperature.
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公开(公告)号：US11431277B2
公开(公告)日：2022-08-30
申请号：US17269073
申请日：2019-08-12
发明人： Ji-Young Byun , Yong-Ho You , Hyoungil Kim
摘要： An image forming apparatus and an image forming method are provided. The image forming apparatus includes a printing engine to form an image, a step motor to drive the printing engine, a driving circuit to provide a constant current to the step motor and sense a voltage corresponding to a magnitude of the constant current provided to the step motor, and a processor to calculate a temperature of the step motor based on the voltage sensed by the driving circuit during an excitation period of the step motor and control an operation of the image forming apparatus based on the calculated temperature.
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公开(公告)号：US11310391B2
公开(公告)日：2022-04-19
申请号：US17051959
申请日：2019-07-05
发明人： Minkeun Song , Kiho Park , Yong-Ho You , Hyoungil Kim
摘要： An image forming apparatus is provided. The image forming apparatus includes a print engine to be used to perform an image forming job, a motor to start the print engine, a driving circuit to supply a power to the motor and to include a sensor to sense a size of current of the power supplied to the motor during an operation to perform the image forming job, and a processor to detect an occurrence of jam based on a size of current sensed by the sensor in a first time interval while the motor is driven and a size of current sensed by the sensor after a determined time from the first time interval.
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