JPH0278970U

JPH0278970U -

Info

Publication number: JPH0278970U
Application number: JP15969288U
Authority: JP
Priority date: 1988-12-08
Filing date: 1988-12-08
Publication date: 1990-06-18

Description

[Brief explanation of drawings]

第１図は本考案の画像形成装置における転写ド
ラムクリーニング装置の斜視図、第２図は画像形
成装置としての複写機の模式図、第３図は転写ド
ラムの斜視図である。１……画像形成装置としてのカラー複写機、２
……感光体ドラム、３０……転写ドラム、３１…
…枠体、３１ａ，３１ｂ……両側部、３１ｃ……
連繋部、３４ａ……クリーニング部材としてのク
リーニングローラー、４０……転写紙支持シート
、７７……バツクアツプ部材としてのバツクアツ
プローラー、９０……バツクアツプ部材駆動手段
。 FIG. 1 is a perspective view of a transfer drum cleaning device in an image forming apparatus of the present invention, FIG. 2 is a schematic view of a copying machine as an image forming apparatus, and FIG. 3 is a perspective view of a transfer drum. 1...Color copying machine as an image forming device, 2
...Photosensitive drum, 30...Transfer drum, 31...
...Frame body, 31a, 31b...Both sides, 31c...
Connecting portion, 34a... Cleaning roller as a cleaning member, 40... Transfer paper support sheet, 77... Backup roller as a backup member, 90... Backup member driving means.

Claims

[Scope of Claim for Utility Model Registration] A transfer drum frame having a shape in which a cylinder is cut out leaving both sides of the cylinder and a band-like connecting part that is continuous with both sides and is a part of the circumferential surface parallel to the axis. , a transfer drum formed by wrapping a flexible transfer paper support sheet constituting the peripheral surface of the transfer drum, and an outer periphery of the transfer drum for collecting residual toner on the transfer drum after the transfer operation. In an image forming apparatus, the image forming apparatus includes a cleaning member that can move toward and away from a surface of the transfer drum, and a backup member that faces the cleaning member while sandwiching the peripheral surface of the transfer drum within the transfer drum. When the toner on the transfer drum is not being collected, the backup member is kept away from the inner peripheral surface of the transfer drum, and the cleaning member is kept away from the inner peripheral surface of the transfer drum. 1. A cleaning device for an image forming apparatus, comprising a back-up member driving means for bringing the back-up member into contact with the outer peripheral surface of the drum immediately before contacting the outer circumferential surface of the drum.