Imaging apparatus, and toner and process cartridge used in...

Details Imaging apparatus, and toner and process cartridge used in... Imaging apparatus, and toner and process cartridge used in...

2006-05-23

2006-05-23

Tran, Hoan (Department: 2852)

Electrophotography

Image formation

Photoconductive member

C399S111000

Reexamination Certificate

active

07050741

ABSTRACT:
An imaging apparatus that is capable of realizing good cleaning characteristics and transfer characteristics, and obtaining a high quality image using toner having a high average roundness is provided. The imaging apparatus includes an image carrier, a charge unit, a developing unit, a transfer unit, and a cleaning unit. The transfer unit may directly transfer a toner image onto a recording medium that is carried by a transfer belt, or transfer the toner image onto the transfer belt first to then transfer the toner image onto the recording medium from the transfer belt. The cleaning unit includes a cleaning blade and a brush roller. The toner used in the imaging apparatus has an average roundness Ψ within a range of 0.93˜0.99, and a friction coefficient μs of the image carrier satisfies a condition, friction coefficient μs≦3.6−3.3×average roundness Ψ.

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