| 发明名称 | Image forming apparatus | ||
| 摘要 | An image forming apparatus includes first through third control units, with the first for processing input image information and each of the second and third for controlling an operation of an image forming unit by communication with the first. In a first mode, in which power is supplied to the first through third control units, the first and third control units communicate via the second control unit. In a second mode, in which the first control unit does not communicate with the second control unit, the first and third control units communicate via a communication line without communicating via the second control unit. The power consumption of the second mode is lower than that of the first mode. In the second mode, the first and third control units can transmit information for transition from the second mode to the first mode to each other via the communication line. | ||
| 申请公布号 | US9001351(B2) | 申请公布日期 | 2015.04.07 |
| 申请号 | US201414167352 | 申请日期 | 2014.01.29 |
| 申请人 | Canon Kabushiki Kaisha | 发明人 | Wakamiya Hidehiro;Hirajima Marehiko |
| 分类号 | G06F1/00;G06F1/32;G06K15/00;G03G15/00 | 主分类号 | G06F1/00 |
| 代理机构 | Fitzpatrick, Cella, Harper & Scinto | 代理人 | Fitzpatrick, Cella, Harper & Scinto |
| 主权项 | 1. An image forming apparatus comprising: a first control unit for processing input image information; a second control unit for communicating with the first control unit; a third control unit for controlling an operation of the image forming unit by communication with the second control unit; and a communication unit for communication between the first and third control units, wherein in a first mode in which power is supplied to the first, second and third control units, the first and third control units communicate via the second control unit, wherein in a second mode, in which a power consumption is lower than that in the first mode, the first and third control units communicate via the communication unit without communicating via the second control unit, and wherein in a case where the second mode is changed to the first mode, information for transition from the second mode to the first mode is transmitted via the communication unit from the first control unit to the third control unit, or the information for transition is transmitted via the communication unit from the third control unit to the first control unit. | ||
| 地址 | Tokyo JP | ||