发明名称 |
Image formation apparatus with determination of state of transfer device |
摘要 |
An image forming apparatus including an image forming device on which toner images are formed; a transfer device for transferring the toner images onto a record medium; a voltage-application unit for applying a transfer voltage to the transfer device; a current-detection unit for detecting current flowing between the image forming device and the transfer device; a storage unit for storing a first current value detected at a non-operation position of the transfer device, and a second current value detected at an operation position of the transfer device; and a transfer device state-determination unit for determining the presence of the transfer device and the occurrence of an anomaly in a contact operation of the transfer device with the image forming device and a shunt operation in which the transfer device is moved away from the image forming device.
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申请公布号 |
US6404999(B1) |
申请公布日期 |
2002.06.11 |
申请号 |
US20000685879 |
申请日期 |
2000.10.11 |
申请人 |
HITACHI, LTD. |
发明人 |
SHOJI JUNICHI;NARITA SATOSHI;KANEKO TETSUNORI |
分类号 |
G03G21/00;G03G15/01;G03G15/16;(IPC1-7):G03G15/00 |
主分类号 |
G03G21/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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