JPH0343668U

JPH0343668U -

Info

Publication number: JPH0343668U
Application number: JP10452389U
Authority: JP
Priority date: 1989-09-06
Filing date: 1989-09-06
Publication date: 1991-04-24

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例としての現像装置を
示す模式的断面図、第２図は上記現像装置におけ
る層厚規制部を示す模式的説明図、第３図及び第
４図は夫々本考案の他の実施例を示す各模式的断
面図、第５図は従来の現像装置を示す模式的断面
図、第６図は上記従来の現像装置における層厚規
制部を示す模式的説明図、第７図は他の従来例に
おける層厚規制部を示す模式的説明図である。１……ケーシング、２……トナーホツパ、３，
５２……現像スリーブ、４，５３……マグネツト
部材、４ａ〜４ｅ，５３ａ〜５３ｄ……磁石、５
，７，８，５４……ドクタブレード、５ａ，７ａ
……穂切り板、５ｂ，７ｂ，８ａ……穂立て板、
８ｂ……穂切り部材、６，５１……感光体ドラム
。 FIG. 1 is a schematic sectional view showing a developing device as an embodiment of the present invention, FIG. 2 is a schematic explanatory view showing a layer thickness regulating section in the developing device, and FIGS. Each schematic sectional view showing another embodiment of the invention, FIG. 5 is a schematic sectional view showing a conventional developing device, and FIG. 6 is a schematic explanatory diagram showing a layer thickness regulating section in the conventional developing device, FIG. 7 is a schematic explanatory diagram showing a layer thickness regulating section in another conventional example. 1... Casing, 2... Toner hopper, 3,
52...Developing sleeve, 4, 53...Magnetic member, 4a to 4e, 53a to 53d...Magnet, 5
, 7, 8, 54...Doctor blade, 5a, 7a
...Ear cutting board, 5b, 7b, 8a... Ear standing board,
8b...ear cutting member, 6,51...photosensitive drum.

Claims

[Scope of utility model registration request]

A toner conveying body made of a non-magnetic cylindrical body that is driven and rotated and carrying and conveying magnetic toner on its surface, and a plurality of magnetic poles disposed non-rotatably within the toner conveying body and arranged along the rotational direction of the toner conveying body. a toner layer thickness regulating member formed by combining a magnet provided with a non-magnetic material and a magnetic material, supporting the tip in a posture close to the surface of the toner transporting body, and regulating the layer thickness of the magnetic toner being transported; In the developing device, the tip of the toner layer thickness regulating member is opposed to one of the plurality of magnetic poles, and the opposing magnetic pole and the opposing magnetic pole are arranged adjacent to each other on the upstream side with respect to the rotational direction of the toner conveying body. A developing device characterized in that the polarity is set to be the same as that of a magnetic pole.