Electrophotography – Image formation – Transfer
Reexamination Certificate
2010-03-05
2011-10-18
Tran, Hoan (Department: 2884)
Electrophotography
Image formation
Transfer
C399S308000
Reexamination Certificate
active
08041276
ABSTRACT:
An image forming apparatus includes a first image bearer that bears a latent image to be developed as a toner image, and a second image bearer that includes an intermediate transfer member. A first transfer device transfers the toner image from the first to the second image bearers. A second transfer device transfers the toner image from the second image bearer to a printing medium. One of the below described inequalities is satisfied when the toner has been subjected to a centrifugal force of 2.6×104(N/m2) per particle, wherein Ftp represents a non-electrostatic adherence between toner particles, Fpp represents a non-electrostatic adherence between the toner and the first image bearer, and Fbp represents a non-electrostatic adherence between the toner and the second image bearer; Fbp>Ftp, and Fbp>Fpp.
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Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh & Company, Ltd.
Tran Hoan
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