Image forming device for forming a uniform toner l

专利名称：Image forming device for forming a uniform

toner layer on a developing roller

发明人：Yoshiaki Tanaka,Shigekazu Enoki,Iwao

Matsumae,Hiroshi Hosokawa

申请号：US08/688770申请日：19960731公开号：US05819145A公开日：19981006

摘要：An image forming device which allows reducing a linear velocity ratio of adeveloping roller against a sensitive body, which enables a pole pitch of a magnetic fieldgenerating layer to be miniaturized, and which generates a uniform and adequately thicktoner layer on the developing roller. A toner regulating element formed by a sheetmetal material having elasticity and non-magnetic characteristics elastically contacts asurface of the developing roller. The developing roller has an elastic body layer and amagnetic field generating layer having a minute pole pitch. The toner regulating

elements serves to regulate a thickness of the toner layer without vibration induced fromthe pole pitch of the magnetic field generating layer. Thus, the toner layer can beuniform and of an adequate thickness, and reducing the linear velocity ratio of thedeveloping roller against the sensitive body does not generate any drawbacks.

申请人：RICOH COMPANY, LTD.

代理机构：Oblon, Spivak, McClelland, Maier & Neustadt, P

更多信息请下载全文后查看