Cleaning blade, and cleaning apparatus, process cartridge,...

Details Cleaning blade, and cleaning apparatus, process cartridge,... Cleaning blade, and cleaning apparatus, process cartridge,...

2006-03-03

2009-10-27

Gray, David M (Department: 2852)

Electrophotography

Cleaning of imaging surface

Blade

Reexamination Certificate

active

07610007

ABSTRACT:
The present invention provides a cleaning blade for cleaning a surface of an object to be cleaned, comprising:a contact portion that contacts the surface of the object for cleaning, the contact portion being made of a material satisfying the following inequalities (1) to (3):in-line-formulae description="In-line Formulae" end="lead"?3.92≦M≦29.42  (1);in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?0<α≦0.294; and  (2)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?S≧250  (3)in-line-formulae description="In-line Formulae" end="tail"?wherein M denotes 100% modulus (MPa); α denotes the ratio {Δstress/Δstrain degree=(stress at 200% strain degree−stress at 100% strain degree)/(200−100)} (MPa/%) of the stress alteration (Δstress) to the strain alteration (Δstrain) in a range of 100% to 200% strain degree in the stress-strain curve; and S denotes the breaking elongation (%), and a cleaning apparatus, a process cartridge, and an image forming apparatus comprising the cleaning blade.

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