Electrophotography – Image formation – Transfer
Reexamination Certificate
2007-07-17
2007-07-17
Gray, David M. (Department: 2852)
Electrophotography
Image formation
Transfer
C399S308000, C399S350000
Reexamination Certificate
active
10924984
ABSTRACT:
An image forming apparatus provided with an image bearing member bearing a toner image, the loss tangent tan δ1 of the image bearing member being 0.05≦tan δ1≦0.40, a transfer member for transferring the toner image borne on the image bearing member to a recording medium, a blade member of which the edge contacts with the image bearing member and removes toner residual on the image bearing member after the toner image has been transferred from the image bearing member to the recording medium, the loss tangent of the blade member being tan δ2, wherein the loss tangent tan δ1 is measured by the use of a first test piece formed by cutting off a portion of the image bearing member, the first test piece includes a surface contacting with the blade member, the loss tangent tan δ2 of the blade member is measured by the use of a second test piece formed by cutting off a portion of the blade member, the second test piece includes the edge contacting with the image bearing member, and two surfaces forming the edge, and the relation that 0.25≦tan δ1+tan δ2≦0.65 is satisfied.
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Machine translation of Japanese Patent JP 2003215995.
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Gray David M.
LaBombard Ruth N.
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