DEVELOPING DEVICE,申请号JP20070215409-传众专利搜索

DEVELOPING DEVICE

申请公布号：JP2009048029(A)

申请号：JP20070215409

申请日期：2007.08.22

申请公布日期：2009.03.05

申请人：

MURATA MACH LTD

发明人：NISHIDA AKINORI;KAMEI TAKATERU

分类号：G03G15/09;G03G15/08

主分类号：G03G15/09

摘要：PROBLEM TO BE SOLVED: To provide a developing device capable of suppressing occurrence of void in a print image resulting from an agglomeration of developer. SOLUTION: The magnetic member 9 of a developing member 6 for developing an electrostatic latent image by supplying developer, layered on the surface of a cylindrical member 10, to a photoreceptor 200 has a developer at magnetic poles N1, S2, S3, N2, and S1 in the rotating direction of the cylindrical member 10, with a position opposite the photoreceptor 200 as a base point. The end 70 of a thickness restricting member 7 which restricts the thickness of the layer of developer held and conveyed on the cylindrical member 10 to a constant thickness is fixed to a housing 2 by a fixing member 8 in the reverse direction to the rotation of the cylindrical member from the peak of the magnetic flux density of the second magnetic pole (S1) and within a range W in which the magnetic flux density of the magnetic pole is 50% or more of the peak of the magnetic flux density of the magnetic pole. COPYRIGHT: (C)2009,JPO&INPIT