JPS5811767U

JPS5811767U - Magnetic brush developing device equipped with toner particle supply mechanism

Info

Publication number: JPS5811767U
Application number: JP10405581U
Authority: JP
Inventors: 久島　昌彦; 弘木村; 豊重村; 矢田　勲; 洋一郎入江; 喜代志森本; 吉川　恭彦; 高志永島
Original assignee: 京セラミタ株式会社
Priority date: 1981-07-15
Filing date: 1981-07-15
Publication date: 1983-01-25

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は、本考案に従って改良された磁気ブラシ式現像
装置の一具体例を示す断面図。第２図は、従来の磁気ブ
ラシ式現像装置の一例を示す部分断面図。２・・・・・・磁気ブラシ式現像装置、８・・・・・・
現像ハウジング、１０・・・・・・現像剤、１２・・・
・・・現像容器、２０・・・・・・現像剤適用機構、２
２・・・・・・磁気ブラシ穂長設定部材、２４・・・・
・・トナー粒子供給機構、２６・・・・・・現像剤剥離
部材、２８・・・・・・回転攪拌機構、３２・・・・・
・回転スリーブ部材、３４・・・・・・静止永久磁石、
３６・・・・・・トナー粒子収容器、３８・・・・・・
回転トナー粒子供給ローラ、４１・・・・・・トナー粒
子排出開口、４２・・・・・・トナー粒子、４６・・・
・・・回転ドラム、４８・・・・・・静電写真感光体、
Ｐ・・・・・・現像剤汲み上げ域、Ｄ・・・・・・現像
域、Ｆ・・・・・・トナー粒子供給域、Ｒ・・・・・・
現像剤剥離域。FIG. 1 is a sectional view showing a specific example of a magnetic brush type developing device improved according to the present invention. FIG. 2 is a partial sectional view showing an example of a conventional magnetic brush type developing device. 2...Magnetic brush developing device, 8...
Developing housing, 10...Developer, 12...
...Developer container, 20...Developer application mechanism, 2
2...Magnetic brush brush length setting member, 24...
... Toner particle supply mechanism, 26 ... Developer peeling member, 28 ... Rotating stirring mechanism, 32 ...
・Rotating sleeve member, 34...stationary permanent magnet,
36... Toner particle container, 38...
Rotating toner particle supply roller, 41... Toner particle discharge opening, 42... Toner particle, 46...
... Rotating drum, 48 ... Electrostatographic photoreceptor,
P...Developer pumping area, D...Development area, F...Toner particle supply area, R...
Developer peeling area.

Claims

[Claims for Utility Model Registration] 1. A developing container containing a developer containing carrier particles and toner particles; comprising a rotating sleeve member and a plurality of magnetic poles positioned at intervals in the circumferential direction; a developer application mechanism having a stationary permanent magnet disposed within; a toner particle container having a toner particle ejection opening; and a rotating toner particle supply roller disposed in the toner particle ejection opening. a toner particle supply mechanism; in response to rotation of the rotating sleeve member of the developer applying mechanism, a portion of the developer present in the developer container is magnetically applied to the surface of the rotating sleeve member in a developer pumping region. The magnetic brush is attracted and held to form a magnetic brush of the developer, and the magnetic brush is brought into contact with the surface of the member having the electrostatic latent image to be developed in the development area, and the toner particles are deposited on the electrostatic latent image. is applied, and then the magnetic brush of the toner particle supply area 1 is brought into contact with the surface of the rotating toner particle supply roller of the toner particle supply mechanism to transfer toner from the surface of the rotating toner particle supply roller to the magnetic brush. Particles are supplied and then the developer forming the magnetic brush is stripped from the surface of the rotating sleeve member of the developer application mechanism in a developer stripping area and returned to the developer container. In a brush type developing device; a surface of the rotating sleeve member of the developer application mechanism and a surface of the rotating toner particle supply roller of the toner particle supply mechanism are connected to a surface of the plurality of stationary permanent magnets of the developer application mechanism; A magnetic brush type developing device characterized in that one of the magnetic poles is brought closest at or near an angular position where one of the magnetic poles is located. 2. The rotating sleeve member of the developer applying mechanism and the rotating toner particle supply roller of the toner particle supply mechanism are rotated in opposite directions to each other, and the surface of the rotating sleeve member and the surface of the rotating sleeve member are rotated in the toner particle supply area. The magnetic brush type developing device according to claim 1, which is moved in the same direction as the surface of the rotating toner particle supply roller.3 Between the developer drawing area and the developing area. , interval 1
A magnetic brush length setting member is provided near the surface of the rotating sleeve member at □, and the surface of the rotating sleeve in the developing area and the surface of the member having the electrostatic latent image to be developed are connected. The distance 1□ and the distance 13 between the surface of the rotating sleeve and the surface of the rotating toner particle supply roller in the toner particle supply area are slightly larger than the distance 1□ as claimed in claim 1 or 2 of the utility model registration. The magnetic brush type developing device described in Section 1. 4. The magnetic brush developing device according to claim 3, wherein the distance 13 is substantially greater than or slightly larger than the distance 1□. 5 The interval 1□ is 0.3 to 0.7 greater than the interval 11.
Larger in mm order, the interval 13 is 0.3 larger than the interval 11.
The magnetic brush type developing device according to claim 4, which is larger by 3 mm to 3 mm.