Photocopying – Including fiber optics
Patent
1986-02-14
1987-08-25
Braun, Fred L.
Photocopying
Including fiber optics
118657, 355 14D, G03G 1508
Patent
active
046889230
ABSTRACT:
A developing apparatus including an electrostatic latent image holder, a developer carrier for carrying a developer and provided opposite to the electrostatic latent image holder and separated therefrom by a predetermined gap, a developing bias voltage applying section for repeatedly applying to the gap between the electrostatic latent image holder and the developer carrier an alternating current voltage having a plurality of different frequencies in order to form an electric field in the gap sufficient for selectively causing the developer to fly and attach to the electrostatic latent image holder, and a control section for variably controlling application periods of the alternating current voltage having the plurality of frequencies by the developing bias voltage applying section while maintaining a predetermined relationship therebetween.
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Braun Fred L.
Kabushiki Kaisha Toshiba
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