Electrophotography – Image formation – Development
Patent
1999-09-08
2000-08-15
Grainger, Quana
Electrophotography
Image formation
Development
G03G 1509
Patent
active
061049018
ABSTRACT:
An image forming apparatus is provided with developing units of different colors. Each developing unit is made up of a developing roller and a squeeze roller located downstream of the developing roller with respect to the rotating direction of a photosensitive drum. The outer circumference of the squeeze roller is a resin layer whose surface roughness Rz is less than 3 .mu.m. The squeeze roller is formed of a conductive material, and serves to remove a residual carrier solution from the photosensitive drum. The squeeze roller can be applied with a predetermined bias voltage. Due to the application of the bias voltage, a transfer medium is prevented from becoming dark in the background portion thereof, despite the use of small-diameter toner particles.
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Grainger Quana
Kabushiki Kaisha Toshiba
Toshiba Tec Kabushiki Kaisha
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