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公开(公告)号：US11409209B2
公开(公告)日：2022-08-09
申请号：US17309682
申请日：2020-03-27
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Jeongsup Sim , Sunghi Lee , Hyojoong Kim , Minwoo Kang
Abstract: An example operation method of an image forming apparatus includes obtaining, from a sensor, an output signal corresponding to a degree of shrinkage of a transporting member that transports a developing agent in a toner cartridge, as the transporting member rotates, determining a state of the toner cartridge based on a characteristic of the output signal, and executing a recovery mode that increases a driving force delivered to the transporting member when determining that the state of the toner cartridge is an abnormal state in which toner is not normally supplied to a developing device.
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公开(公告)号：US20220026828A1
公开(公告)日：2022-01-27
申请号：US17309682
申请日：2020-03-27
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Jeongsup Sim , Sunghi Lee , Hyojoong Kim , Minwoo Kang
Abstract: An example operation method of an image forming apparatus includes obtaining, from a sensor, an output signal corresponding to a degree of shrinkage of a transporting member that transports a developing agent in a toner cartridge, as the transporting member rotates, determining a state of the toner cartridge based on a characteristic of the output signal, and executing a recovery mode that increases a driving force delivered to the transporting member when determining that the state of the toner cartridge is an abnormal state in which toner is not normally supplied to a developing device.
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