Electrophotography – Image formation – Development
Reexamination Certificate
2008-05-14
2011-11-08
Gray, David (Department: 2852)
Electrophotography
Image formation
Development
C399S222000
Reexamination Certificate
active
08055169
ABSTRACT:
A developing device includes a developer supporting member abutting against an image supporting member for developing a static latent image on the image supporting member. In a state that a film member is disposed between the image supporting member and the developer supporting member, it is arranged such that the film member is extended with a tensional force N (N) when the image supporting member and the developer supporting member rotate. The tensional force N has a relationship as follows:in-line-formulae description="In-line Formulae" end="lead"?(A×B×exp(0.32×F−16))/N≦11.6in-line-formulae description="In-line Formulae" end="tail"?where A (mm) is a difference between an outer diameter of a center portion of the developer supporting member and an outer diameter of an end portion of the developer supporting member; B (mm) is a wobble amount of the end portion of the developer supporting member; and F (degree) is an Asker C hardness of the developer supporting member.
REFERENCES:
patent: 2006/0002741 (2006-01-01), Mimura et al.
patent: 2001-350351 (2001-12-01), None
patent: 2003-316112 (2003-11-01), None
patent: 2006-048018 (2006-02-01), None
Gray David
Hyder G. M.
Kubotera & Associates LLC
Oki Data Corporation
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