Developer apparatus and image forming apparatus
AssigneeSharp Kabushiki Kaisha
InventorsKatsumi Adachi, Masamitsu Sakuma
Life of this patent
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Abstract
Rear electrode(s) 27 is or are arranged at location(s) at the back(s) of toner transport path(s) 21 opposite supply roller(s) 23, and rear electrode(s) 27 is or are moreover embedded in support(s) 28, toner-supplying voltage(s) from rear electrode power supply or supplies 44 being applied to rear electrode(s) 27, toner-supplying electric field(s) being formed in the vicinity or vicinities of supply roller(s) 23, toner-supplying voltage(s) from rear electrode power supply or supplies 44 being varied as appropriate, and intensity or intensities of toner-supplying electric field(s) being adjusted so as to permit increased stability in toner supply amount(s).
Claims11
In the context of a developer apparatus equipped with one or more transport path or paths wherein a plurality of electrodes are arranged in a row or rows so as to be mutually separated by a prescribed spacing or spacings and with one or more developer material supply means arranged at the front side of at least one of the transport path or paths, developer material being supplied from at least one of the developer material supply means to the front of at least one of the transport path or paths, a polyphase alternating current voltage or voltages being applied to respective electrodes of at least one of the transport path or paths, a traveling-wave electric field or fields being formed, at least one of the traveling-wave electric field or fields causing at least a portion of the developer material to be transported along the front of at least one of the transport path or paths to an image carrier or carriers, and supply of this developer material to the image carrier or carriers causing a latent electrostatic image or images on at least one of the image carrier or carriers to be developed,
- a developer apparatus characterized in that a rear electrode or electrodes is or are arranged at a location or locations at the back side of at least one of the transport path or paths opposite at least one of the developer material supply means, a developer-material-supplying electric field or fields being formed between at least one of the rear electrode or electrodes and at least one of the developer material supply means.
Dependencies are inferred from the claim text.