JPH0253051U

JPH0253051U -

Info

Publication number: JPH0253051U
Application number: JP13178588U
Authority: JP
Priority date: 1988-10-11
Filing date: 1988-10-11
Publication date: 1990-04-17

Description

[Brief explanation of drawings]

第１図は本考案に係るブレードを用いた画像形
成装置の一部の断面図、第２図は現像ローラをブ
レードとの関係を示す拡大図、第３図はくいこみ
量とトナー付着量とブレード支持角度との関係に
おける特性曲線を示す図、第４図は本考案に係る
ブレードの断面略図でＡ，Ｂ，Ｃは夫々異なる実
施例を示す図、第５図Ａ，Ｂ，Ｃは夫々第４図Ａ
，Ｂ，Ｃに示すブレードの使用状態の説明図であ
る。１……感光体、４……現像装置、５……現像ロ
ーラ、１１……薄層用ブレード、１２……クリー
ニングブレード、１３，１４，１５，１６，１７
……ブレード層。 Fig. 1 is a cross-sectional view of a part of an image forming apparatus using a blade according to the present invention, Fig. 2 is an enlarged view showing the relationship between the developing roller and the blade, and Fig. 3 shows the amount of penetration, toner adhesion amount, and blade. FIG. 4 is a schematic cross-sectional view of the blade according to the present invention; FIG. 5 is a diagram showing different embodiments; FIG. Figure 4 A
, B, and C are explanatory diagrams of the usage states of the blades shown in FIG. DESCRIPTION OF SYMBOLS 1...Photoreceptor, 4...Developing device, 5...Developing roller, 11...Thin layer blade, 12...Cleaning blade, 13, 14, 15, 16, 17
...Blade layer.

Claims

[Claims for Utility Model Registration] (1) It has an electrostatic latent image carrier and a developing device that develops the latent image on the electrostatic latent image carrier to make it visible; In an image forming apparatus having a cleaning blade that contacts the carrier to remove residual toner, and a toner thin layer blade that regulates the toner layer thickness on the developing roller of the developing device, A blade having a multilayer structure in which a cleaning layer and a thin layer having an extending length in the longitudinal direction and substantially the same length in the lateral direction are overlapped in the thickness direction,
Blade for cleaning and toner thin layer for image forming equipment. (2) It has an electrostatic latent image carrier and a developing device that develops the latent image on the electrostatic latent image carrier to make it visible, and the developing device contacts the electrostatic latent image carrier to remove residual toner. In an image forming apparatus having a cleaning blade for removing a toner layer and a toner thin layer blade for regulating a toner layer thickness on a developing roller of the developing device, an intermediate portion having a length in a longitudinal direction extending over substantially the entire length of the developing roller. It has a multilayer structure in which the layer and both outer layers sandwiching the intermediate layer are stacked in the thickness direction,
In this case, the intermediate layer is formed to have a longer transverse length and protrude than the outer layer, and one of the intermediate layer and at least one of the outer layers is made of a material suitable for cleaning, and the other is made of a material suitable for cleaning. A blade for cleaning and forming a thin toner layer for an image forming apparatus, characterized in that it is formed of a material suitable for forming a thin layer. (3) The thin layer has different material layers in either the transverse direction or the thickness direction so that the two edges of the thin layer that can be brought into contact with the developing roller have different triboelectric charging properties. 3. The cleaning and toner thin layer blade for an image forming apparatus according to claim 1, further comprising a blade for cleaning and toner thin layer for an image forming apparatus.