Electrophotography – Image formation – Development
Reexamination Certificate
2005-09-20
2005-09-20
Brase, Sandra L. (Department: 2852)
Electrophotography
Image formation
Development
C399S289000, C399S291000
Reexamination Certificate
active
06947691
ABSTRACT:
An electrostatic transportation device is provided with a transporting base plate having a plurality of electrodes which generate an electric field which performs transporting and hopping of fine particles by an electrostatic force, wherein a width of each of the electrodes in a travelling direction of the fine particles is set to be in a range of 1 time to 20 times an average particle diameter of the fine particles, a pitch between the electrodes in the travelling direction of the fine particles is set to be in a range of 1 time to 20 times the average particle diameter of the fine particles, and driving waveforms of n phases or more (n is an integer of 3 or more) are applied to respective electrodes.
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Horike Masanori
Kondoh Nobuaki
Miyaguchi Yohichiro
Sakai Katsuo
Takemoto Takeshi
Brase Sandra L.
Ricoh & Company, Ltd.
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