Magnet for use in a magnetic brush development system
AssigneeXerox Corporation
InventorRobert L. Thompson
Life of this patent
Estimating the term…
Abstract
A magnetic member in which the magnetic portion thereof is magnetized to saturation impressing a plurality of magnetic poles thereon. At least one non-magnetic portion is integral with the magnetic portion so that the volume of magnetic material within the magnetic member varies producing a magnetic field having a preselected intensity profile. The magnetic member may be utilized in a development system or cleaning system of an electrophotographic printing machine.
Claims19
A magnetic member for attracting magnetic particles to a transport of a reproducing machine, including:
- an arcuate magnetic portion having a plurality of magnetic poles impressed thereon by magnetizing said magnetic portion to saturation;
- and
- at least one non-magnetic portion disposed interiorly of said magnetic portion so that the volume of magnetic material in the magnetic member varies producing a magnetic field having a pre-selected intensity profile.
An apparatus for use in a developing station or a cleaning station of a reproducing machine, including:
- means for transporting magnetic particles closely adjacent to a recording member;
- a magnetic member, operatively associated with said transporting means, for attracting the magnetic particles to said transporting means, said magnetic member having a plurality of magnetic poles impressed thereon by being magnetized to saturation;
- and at least one non-magnetic member disposed interiorly of said magnetic member so that the volume of magnetic material in said magnetic member varies producing a magnetic field having a pre-selected intensity profile.
An electrophotographic printing machine of the type having a photoconductive member arranged to have an electrostatic latent image recorded thereon, a developing station for transporting a developer material into contact with the latent image, and a cleaning station for removing particles from the surface of the photoconductive member, wherein the improved developing station or cleaning station includes:
- means for transporting magnetic particles closely adjacent to the photoconductive member;
- a magnetic member, operatively associated with said transporting means, for attracting the magnetic particles to said transporting means, said magnetic member having a plurality of magnetic poles impressed thereon by being magnetized to saturation;
- and
- at least one non-magnetic member disposed interiorly of said magnetic member so that the volume of magnetic material in said magnetic member varies producing a magnetic field having a pre-selected intensity profile.
Dependencies are inferred from the claim text.