Developing device with dual donor rollers including electrically

Details Developing device with dual donor rollers including electrically Developing device with dual donor rollers including electrically

1989-10-30

1991-07-16

Braun, Fred L.

Photocopying

Contact printing

Light boxes

118647, 118651, 118656, 118661, 355251, 355253, 355261, G03G 1506, G03G 1509

Patent

active

050328727

ABSTRACT:
An apparatus for developing a latent image recorded on a photoconductive member in an electrophotographic printing machine having a reservoir for storing a supply of developer material and a magnetic rush roll for transporting material from the reservoir to each of two donor rolls. The developer material has carrier granules and toner particles. The donor rolls receive toner particles from the magnetic brush roll and deliver the toner particles to the photoconductive member at spaced locations in the direction of movement of the photoconductive member to develop the latent image recorded thereon.

REFERENCES:
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patent: 3929098 (1975-12-01), Liebman
patent: 3967892 (1976-07-01), Whited
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patent: 4529295 (1985-07-01), Mayer
patent: 4847655 (1989-07-01), Parker et al.
patent: 4876575 (1989-10-01), Hays
patent: 4913348 (1990-04-01), Hays
Xerox co-pending U.S. patent application Ser. No. 396,153 Filed Aug. 21, 1989 in the Name of Jeffrey J. Folkins.

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