Cleaning blade for electrophotography, cleaning device for electrophotography, apparatus unit, electrophotographic apparatus and fascimile apparatus

Claim 2

The cleaning blade for electrophotography according to claim 1, wherein said blade body has a modulus of elasticity of 10 to 10³ kg/cm².

Claim 3

The cleaning blade for electrophotography according to claim 1, wherein said blade body has a modulus of elasticity of 20 to 100 kg/cm².

Claim 4

The cleaning blade for electrophotography according to claim 1, wherein said blade body has a compression set of not more than 20%.

Claim 5

The cleaning blade for electrophotography according to claim 1, wherein said blade body has a compression set of 1 to 10%.

Claim 6

The cleaning blade for electrophotography according to claim 1, wherein said blade body comprises a material selected from the group consisting of urethane rubber, silicone rubber, nitrile rubber and chloroprene rubber.

Claim 7

The cleaning blade for electrophotography according to claim 1, wherein said blade body comprises urethane rubber.

Claim 8

The cleaning blade for electrophotography according to claim 7, wherein said urethane rubber comprises a two-pot type, thermo-settable polyurethane rubber.

Claim 9

The cleaning blade for electrophotography according to claim 1, wherein said blade body has a hardness of 40° to 90°.

Claim 10

The cleaning blade for electrophotography according to claim 1, wherein said blade body has a hardness of 50° to 80°.

Claim 11

The cleaning blade for electrophotography according to claim 1, wherein said binder resin has a frictional coefficient of 0.01 to 5.

Claim 12

The cleaning blade for electrophotography according to claim 1, wherein said binder resin has a frictional coefficient of 0.5 to 2.5.

Claim 13

The cleaning blade for electrophotography according to claim 1, wherein said binder resin has an attrition loss of 0.1 to 100 mg.

Claim 14

The cleaning blade for electrophotography according to claim 1, wherein said binder resin has an attrition loss of 0.1 to 10 mg.

Claim 15

The cleaning blade for electrophotography according to claim 1, wherein said binder resin has a tensile modulus of elasticity of 10 to 10⁵ kg/cm².

Claim 16

The cleaning blade for electrophotography according to claim 1, wherein said binder resin has a tensile modulus of elasticity of 10² to 10⁴ kg/cm².

Claim 17

The cleaning blade for electrophotography according to claim 1, wherein said binder resin comprises a material selected from the group consisting of polyamide resin, silicon resin, polyacetal resin and fluorocarbon resin.

Claim 18

The cleaning blade for electrophotography according to claim 1, wherein said binder resin comprises polyamide resin.

Claim 19

The cleaning blade for electrophotography according to claim 1, wherein said polyamide resin is cross-linked.

Claim 20

The cleaning blade for electrophotography according to claim 19, wherein said polyamide resin is self-cross-linkable.

Claim 21

The cleaning blade for electrophotography according to claim 19, wherein said polyamide resin contains a cross-linking agent.

Claim 22

The cleaning blade for electrophotography according to claim 1, wherein said lubricating particles comprise a solid lubricating agent.

Claim 23

The cleaning blade for electrophotography according to claim 1, wherein said lubricating particles comprise a material selected from the group consisting of graphite fluoride, fluorocarbon resin, silicone resin and polyamide resin.

Claim 24

The cleaning blade for electrophotography according to claim 1, wherein said lubricating particles are in an irregular shape.

Claim 25

The cleaning blade for electrophotography according to claim 1, wherein said lubricating particles comprise graphite fluoride.

Claim 26

The cleaning blade for electrophotography according to claim 1, wherein said lubricating particles have an average particle size of 0.1 to 5 µm.

Claim 27

The cleaning blade for electrophotography according to claim 1, wherein said lubricating particles are in an amount of 5 to 50 parts by weight on the basis of 100 parts by weight of the binder resin.

Claim 28

The cleaning blade for electrophotography according to claim 1, wherein said coating layer contains the lubricating particles dispersed in the binder resin.

Claim 29

The cleaning blade for electrophotography according to claim 1, wherein said coating layer has a surface roughness of 0.05 to 5 µm.

Claim 30

The cleaning blade for electrophotography according to claim 1, wherein said coating layer has a thickness of 1 to 100 µm.

Claim 31

The cleaning blade for electrophotography according to claim 1, wherein said coating layer has a thickness of 5 to 30 µm.

Claim 32

The cleaning blade for electrophotography according to claim 1, wherein said coating layer is formed on the surface of the blade body by application of a solution mixture comprising the binder resin, the lubricating particles and a solvent selected from the group consisting of an alcoholic solvent, a chlorinic solvent, a ketonic solvent, an esteral solvent, and their mixtures, and water.

Claim 33

The cleaning blade for electrophotography according to claim 1, wherein said coating layer has a frictional coefficient of 0.01 to 1.5.

Claim 34

The cleaning blade for electrophotography according to claim 1, wherein said coating layer has a frictional coefficient of 0.1 to 0.6.

Claim 35

A cleaning blade for electrophotography, comprising a blade body having a rubbery elasticity and a coating layer covering the surface of the blade body, wherein said coating layer comprises lubricating particles and a binder resin and is formed at least on the surface at a blade body edge on the side in contract with an electrostatically charged latent image support and in parallel to the axial direction of the blade body, and the lubricating particles are exposed from the binder resin on the contact surface of the coating layer with the electrostatically charged latent image support.

Claim 36

The cleaning blade for electrophotography according to claim 35, wherein said coating layer has a frictional coefficient of 0.1 to 0.6.

Claim 37

The cleaning blade for electrophotography according to claim 35, wherein said cleaning blade has the coating layer comprising graphite fluoride and polyamide resin on the surface of the blade body of polyurethane resin.

Claim 38

A cleaning device for electrophotography, comprising a cleaning blade for removing toners from the surface of an electrostatically charged latent image support, the cleaning blade comprising a blade body having a rubbery elasticity and a coating layer covering the surface of the blade body and being in an elastically pressing contact with the surface of the electrostatically charged latent image support, wherein said coating layer comprises lubricating particles and a binder resin having a lubricability and a wear resistance.

Claim 39

The cleaning device for electrophotography according to claim 38, wherein said coating layer has a frictional coefficient of 0.1 to 0.6.

Claim 40

The cleaning device for electrophotography according to claim 38, wherein said cleaning blade has a coating layer comprising graphite fluoride and polyamide resin on the surface of the blade body of polyurethane resin.

Claim 41

A cleaning device for electrophotography, comprising a cleaning blade for removing toners from the surface of an electrostatically charged latent image support, the cleaning blade comprising a blade body having a rubbery elasticity and a coating layer covering the surface of the blade body and being in an elastically pressing contact with the surface of the electrostatically charged latent image support, wherein said coating layer comprises lubricating particles and a binder resin and is formed at least on the surface at a blade body edge on the side in contact with an electrostatically charged latent image support and in parallel to the axial direction of the blade body, and the lubricating particles are directly exposed from the binder resin on the contact surface of the coating layer with the electrostatically charged latent image support.

Claim 42

The cleaning device for electrophotography according to claim 41, wherein said coating layer has a frictional coefficient of 0.1 to 0.6.

Claim 43

The cleaning device for electrophotography according to claim 41, wherein said cleaning blade has the coating layer comprising graphite fluoride and polyamide resin on the surface of the blade body of polyurethane resin.

Claim 45

The apparatus unit according to claim 44, wherein said coating layer has a frictional coefficient of 0.1 to 0.6.

Claim 46

The apparatus unit according to claim 44, wherein said cleaning blade has the coating layer comprising graphite fluoride and polyamide resin on the surface of the blade body of polyurethane resin.

Claim 48

The apparatus unit according to claim 47, wherein said coating layer has a frictional coefficient of 0.1 to 0.6.

Claim 49

The apparatus unit according to claim 47, wherein said cleaning blade has the coating layer comprising graphite fluoride and polyamide resin on the surface of the blade body of polyurethane resin.

Claim 50

An electrophotographic apparatus comprising an electrostatically charged latent image support for supporting electrostatically charged latent images, a charging means for charging the electrostatically charged latent image support, a latent image-forming means for forming electrostatically charged latent images on the electrostatically charged latent image support, a developing means for developing electrostatically charged latent images supported on the electrostatically charged latent image support, and a cleaning means comprising a cleaning blade in elastically pressing contact with the surface of the electrostatically charged latent image support, wherein said cleaning blade comprises a blade body having a rubbery elasticity and a coating layer comprising lubricating particles and a binder resin, and said coating layer is formed at least on the surface at a blade body edge on the side in contact with the electrostatically charged latent image support and in parallel to the axial direction of the blade body, and the lubricating particles are directly exposed from the binder resin on the contact surface of the coating layer with the electrostatically charged latent image support.

Claim 51

The electrophotographic apparatus according to claim 50, wherein said coating layer has a frictional coefficient of 0.1 to 0.6.

Claim 52

The electrophotographic apparatus according to claim 50, wherein said cleaning blade has the coating layer comprising graphite fluoride and polyamide resin on the surface of the blade body of polyurethane resin.

Claim 53

An electrophotographic apparatus comprising an electrostatically charged latent image support for supporting electrostatically charged latent images, a charging means for charging the electrostatically charged latent image support, a latent image-forming means for forming electrostatically charged latent images on the electrostatically charged latent image support, a developing means for developing electrostatically charged latent image supported on the electrostatically charged latent image support, and a cleaning means comprising a cleaning blade in elastically pressing contact with the surface of the electrostatically charged latent image support, wherein said cleaning blade comprises a blade body having a rubbery elasticity and a coating layer covering the surface of the blade body and comprising lubricating particles and a binder resin having a lubricability and a wear resistance.

Claim 54

The electrophotographic apparatus according to claim 53, wherein said coating layer has a frictional coefficient of 0.1 to 0.6.

Claim 55

The electrophotographic apparatus according to claim 53, wherein said cleaning blade has the coating layer comprising graphite fluoride and polyamide resin on the surface of the blade body of polyurethane resin.

Claim 56

A facsimile apparatus comprising an electrophotographic apparatus and a receiving means for receiving image information from a remote terminal, wherein said electrophotographic apparatus comprises an electrostatically charged latent image support for supporting electrostatically charged latent images, a charging means for charging the electrostatically charged latent image support, a latent image-forming means for forming electrostatically charged latent images on the electrostatically charged latent image support, a developing means for developing the electrostatically charged latent images supported on the electrostatically charged latent image support, and a cleaning means comprising cleaning blade in elastically pressing contact with the surface of the electrostatically charged latent image support, and said cleaning blade comprises a blade body having a rubbery elasticity and a coating layer covering the surface of the blade body and comprising lubricating particles and a binder resin having a lubricability and a wear resistance.

Claim 57

The facsimile apparatus according to claim 56, wherein said coating layer has a frictional coefficient of 0.1 to 0.6.

Claim 58

The facsimile apparatus according to claim 56, wherein said cleaning blade has the coating layer comprising graphite fluoride and polyamide resin on the surface of the blade body of polyurethane resin.

Claim 59

A facsimile apparatus comprising an electrophotograhic apparatus and a receiving means for receiving image information from a remote terminal, wherein said electrohotographic apparatus comprises an electrostatically charged latent image support for supporting electrostatically charged latent images, a charging means for charging the electrostatically charged latent image support, a latent image-forming means for forming electrostatically charged latent images on the electrostatically charged latent image support, a developing means for developing the electrostatically charged latent images supported on the electrostatically charged latent image support, and a cleaning means comprising a cleaning blade in elastically pressing contact with the surface of the electrostatically charged latent image support, said cleaning blade comprises a blade body having a rubbery elasticity and a coating layer comprising lubricating particles and a binder resin, and said coating layer is formed at least on the surface at a blade body edge on the side in contact with the electrostatically charged latent image support and in parallel to the axial direction of the blade body, and the lubricating particles are directly exposed from the binder resin on the contact surface of the coating layer with the electrostatically charged latent image support.

Claim 60

The facsimile apparatus according to claim 59, wherein said coating layer has a frictional coefficient of 0.1 to 0.6.

Claim 61

The facsimile apparatus according to claim 59, wherein said cleaning blade has the coating layer comprising graphite flouride and polyamide resin on the surface of the blade body of polyurethane resin.