JPS6330862U

JPS6330862U -

Info

Publication number: JPS6330862U
Application number: JP12535186U
Authority: JP
Priority date: 1986-08-14
Filing date: 1986-08-14
Publication date: 1988-02-29

Description

[Brief explanation of the drawing]

第１図は本考案のクリーニング装置の断面図、
第２図は本考案のクリーニング装置を備えた多色
画像形成装置の構成図、第３図は回収ローラへの
バイアス電圧とクリーニングブラシによる像担持
体からのトナーの回収率を示す特性図、第４図は
多色画像形成装置の作動のタイムチヤート、第５
図は単色画像形成時の作動のタイムチヤート、第
６図は従来例によるクリーニング装置の要部図で
ある。４０…像担持体、７０…クリーニング装置、７
１…クリーニングブラシ、７２…回収ローラ、７
３…ブレード、７４…枠体、７５…第１バイアス
電圧電源、７６…第２バイアス電圧電源、７７…
毛体、７８…圧送スクリユー、８０…クリーニン
グ手段、８１…圧接・解除手段、８２…駆動手段
。 Figure 1 is a sectional view of the cleaning device of the present invention;
FIG. 2 is a configuration diagram of a multicolor image forming apparatus equipped with the cleaning device of the present invention, FIG. 3 is a characteristic diagram showing the bias voltage to the collection roller and the recovery rate of toner from the image carrier by the cleaning brush, and FIG. Figure 4 is a time chart of the operation of the multicolor image forming apparatus, No. 5.
The figure is a time chart of the operation during monochrome image formation, and FIG. 6 is a diagram of the main parts of a conventional cleaning device. 40... Image carrier, 70... Cleaning device, 7
1...Cleaning brush, 72...Collection roller, 7
3... Blade, 74... Frame body, 75... First bias voltage power supply, 76... Second bias voltage power supply, 77...
Hair body, 78... Pressure feeding screw, 80... Cleaning means, 81... Pressing/releasing means, 82... Driving means.

Claims

[Claims for Utility Model Registration] (1) Applying a bias voltage to conductive bristles implanted on the circumferential surface of a cylindrical body, pressing and rotating the bristles to rub and remove residual toner on the surface of the image carrier. A cleaning means comprising a cleaning brush having a conductive cylindrical body and a collection roller configured to apply a bias voltage to a conductive cylindrical body to contact and rotate the cleaning brush to collect toner from the cleaning brush, the collection roller comprising: In a cleaning device for an image forming apparatus in which a cleaning means is controlled to be activated and deactivated on the image bearing member in connection with an image forming process, after the cleaning means is deactivated from the image bearing member, A cleaning device characterized in that a high bias voltage is applied to a collection roller to keep it in contact with and rotating with the cleaning brush. (2) The cleaning device according to claim 1, wherein the high bias voltage applied to the collecting roller is at least twice the bias voltage applied when the roller is forming an image.