| 摘要 |
PROBLEM TO BE SOLVED: To reduce the cost and to simplify control software by dispensing with an electrical means (a switch sensor, etc.), for detecting the presence of the attachment/detachment of a developing cartridge to/from an image forming device main body and a peripheral circuit for the electrical means. SOLUTION: When the developing cartridge 10 is not set in an image forming device, a pattern 16 for supplying power to a laser output circuit, a motor driving circuit or a high-voltage control circuit is made a disconnected state. Further, when the cartridge 10 is set, contact parts 19-a and 19-b are connected by an electric contact 17, so that a control circuit becomes an energized state, to supply the power and execute image forming processing. |
