| 摘要 |
PROBLEM TO BE SOLVED: To provide a device and a method for attachment/detachment for a developing device by which roller attachment/detachment operation is easy, the service life of a blade can be secured for a long time, and printing failure can be prevented from occurring. SOLUTION: A developing roller 1 is pivotally supported to attaching plates 2a and 2b, and a squeeze roller 3 is pivotally supported to attaching plates 4a and 4b, respectively. Both attaching plates 2a, 2b, and 4a, 4b are pivotally supported so as to rock centering a supporting shaft 14 fixed to a developing part frame 13, and are mutually connected by a tension spring 26 through fulcrum pins 27 and 24 on a lower end. The rollers 1 and 3 are pressed against a photoreceptor drum 29 by this pressing force. Both attaching plates are connected to an operating shaft 5 through attachable/detachable arms 7 and 8, and eccentric shafts 6a and 6b by the fulcrum pins 19 and 24. By the operation of the shaft 5, the rollers 1 and 3 attach/detach to/from a photoreceptor drum 29. A liquid reservoir blade 10, a scraping blade 11, and a squeeze blade 12 are attached to the respective attaching plates, and the turning of each blade is performed linked with the attachment detachment of the rollers to the drum. |
