Electrophotography – Image formation – Development
Reexamination Certificate
2005-05-26
2009-08-04
Le, Hoa V (Department: 1795)
Electrophotography
Image formation
Development
C399S222000, C399S252000, C430S106300, C430S110400, C430S111100, C430S111320, C430S111350
Reexamination Certificate
active
07570904
ABSTRACT:
In the image forming apparatus by: visualizing an electrostatic latent image formed on an electrostatic charge carrying member; transferring a toner image, which is thus visualized, to a recording medium, or to a recording medium through an intermediate transfer material; and fixing the toner image, which is thus transferred to the recording medium, to obtain a recorded image, the toner includes at least a fixing resin, a colorant, a releasing agent, and an external additive, the toner has an average particle diameter in a range of from 4 to 12 μm and including no particle having a diameter of 45 μm or more, a ratio of a toner adhesion amount in a character part to a toner adhesion amount in a solid image part upon printing is more than 0.5 and less than 4, and the toner adhesion amount in a character part is 1.6 mg/cm2or less.
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Hokkyo Tomonari
Kobayashi Junji
Ouchi Hirobumi
Yaguchi Shigenori
Le Hoa V
McGinn IP Law Group PLLC
Ricoh Printing Systems Ltd.
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