Rubber roller for image-forming apparatus

Details Rubber roller for image-forming apparatus Rubber roller for image-forming apparatus

2008-05-20

2008-05-20

Teskin, Fred (Department: 1796)

Roll or roller

With specific roller exterior surface structure

Surface projections, indentations, or slits

C492S056000, C399S176000, C428S036800

Reexamination Certificate

active

11714257

ABSTRACT:
A rubber roller, for use in an image-forming apparatus, which is formed by molding a rubber composition into the shape of a roller. In the rubber roller, a complex elastic modulus E* of rubber and a surface roughness Rz of the rubber roller satisfy a relationship indicated by an equation (1) shown below; and a hardness change of the rubber is set to not more than five points when the rubber ages at 70° C. for eight days:in-line-formulae description="In-line Formulae" end="lead"?7×Ln E*−0.12×Rz+3.0≦10.  Equation (1)in-line-formulae description="In-line Formulae" end="tail"?

REFERENCES:
patent: 7149466 (2006-12-01), Mizumoto
patent: 2003-154631 (2003-05-01), None
patent: 2005-35732 (2005-02-01), None

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