Back to results
US 8,873,997 B2Granted
Method for bias member charging a photoreceptor
AssigneeXerox Corporation
InventorsYu Liu, Johann Junginger, Gaetano J Lavigne, Gregory Mcguire, Vladislav Skorokhod, Nan-Xing Hu
Life of this patent
Estimating the term…
Abstract
A bias charge member is pulsed into contact with a photoreceptor at high frequency as a mean to reduce contamination and wearing on both the bias charge member and photoreceptor.
Claims17
A method for reducing wear and contamination of a bias charging member and a surface portion of a photoreceptor, comprising:
- providing a photoreceptor;
- providing a bias charging member for charging said photoreceptor;
- and
- pulsing said bias charging member into and out of contact with a surface portion of said photoreceptor in order to reduce power consumption, toner contamination, and wear rate on both said surface portion of said photoreceptor and a surface portion of said bias charging member, and wherein said pulsing of said bias charging member into and out of contact with said surface portion of said photoreceptor is accomplished through vibration of said charging member against said surface portion of said photoreceptor.
1 more element
A bias charging unit comprising:
- a bias charging member with an electrically conductive core;
- an outer layer axially supported on the core;
- and
- an actuator that pulses said bias charging member into and out of contact with a surface portion of a photoreceptor in order to reduce power consumption, toner contamination, and wear rate on both said surface portion of said photoreceptor and a surface portion of said bias charging member, and wherein a pulsing frequency of said actuator is from about 100 Hz to about 10 kHz.
1 more element
An image forming apparatus comprising:
- an electrophotographic imaging member having a charge retentive surface configured to receive an electrostatic latent image;
- a development component to apply a developer materials to the charge retentive surface to form a developed image on the charge retentive surface;
- a transfer component for transferring the developed image from the charge retentive surface to a substrate;
- and
- a bias charging member, said bias charging member comprising:
- an electrically conductive core;
- an outer layer axially supported on the core;
- and
- an actuator adapted to pulse the bias charging member into and out of contact with said charge retentive surface of said electrophotographic imaging member in order to reduce power consumption, toner contamination, and wear rate on both said surface portion of said electrophotographic imaging member and a surface portion of said bias charging member, and wherein the bias charging member is vibrated from about 100 Hz to about 10 kHz.
6 more elements
Dependencies are inferred from the claim text.