Cleaning blade for use in image-forming apparatus
First Claim
1. A cleaning blade for removing a toner from the surface of a photoreceptor, in an image-forming apparatus, by being pressed against the surface of the photoreceptor, said cleaning, blade having a rectangular configuration with a thickness of 1 to 3 mm. a width of 10 to 40 mm and a length of 200 to 500 mm which comprises a molded resin composition containing a rubber component consisting of an acrylonitrile-butadiene rubber having a bound acrylonitrile amount of 28 to 39% and a number-average molecular weight thereof of not less than 50,000, 1 to 20 parts by mass of zinc stearate and magnesium oxide as a filler per 100 parts by mass of said rubber component, said zinc stearate and magnesium oxide being present in substantially equal amounts, and 0.1 to 30 parts by mass of a crosslinking agent per 100 parts by mass of said rubber component, said cleaning blade having a JIS-A hardness of 60 to 90, a tensile strength of not less than 6.0 MPa and a modulus of repulsion elasticity of 15 to 70%.
1 Assignment
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Accused Products
Abstract
A cleaning blade, for use in an image-forming apparatus, formed by a molded resin composition containing a rubber component consisting of a thermosetting elastomer containing acrylonitrile as a constituent monomer thereof and having a bound acrylonitrile amount of 15 to 50%.
4 Citations
2 Claims
- 1. A cleaning blade for removing a toner from the surface of a photoreceptor, in an image-forming apparatus, by being pressed against the surface of the photoreceptor, said cleaning, blade having a rectangular configuration with a thickness of 1 to 3 mm. a width of 10 to 40 mm and a length of 200 to 500 mm which comprises a molded resin composition containing a rubber component consisting of an acrylonitrile-butadiene rubber having a bound acrylonitrile amount of 28 to 39% and a number-average molecular weight thereof of not less than 50,000, 1 to 20 parts by mass of zinc stearate and magnesium oxide as a filler per 100 parts by mass of said rubber component, said zinc stearate and magnesium oxide being present in substantially equal amounts, and 0.1 to 30 parts by mass of a crosslinking agent per 100 parts by mass of said rubber component, said cleaning blade having a JIS-A hardness of 60 to 90, a tensile strength of not less than 6.0 MPa and a modulus of repulsion elasticity of 15 to 70%.
Specification
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- Resources
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Current AssigneeSumitomo Rubber Industries Limited
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Original AssigneeSumitomo Rubber Industries Limited
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InventorsSugimoto, Mutsuki
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Primary Examiner(s)Cheung; William K
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Application NumberUS11/519,918Publication NumberTime in Patent Office1,336 DaysField of Search524/495, 526/335, 526/310US Class Current524/495CPC Class CodesG03G 21/0017 Details relating to the int...
