Browse Prior Art Database

DEVELOPMENT ELECTRODE

IP.com Disclosure Number: IPCOM000023665D
Original Publication Date: 1978-Oct-31
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 224K

Publishing Venue

Xerox Disclosure Journal

Abstract

In an electrophotographic printing machine, a magnetic brush developer roller is frequently employed to deposit toner par-tides on the latent image recorded on a photoconductive surface, As shown in Figure 1, a flexible electrode 10 is interposed between developer roller 12 and photoconductive surface 14. The spacing between electrode 10 and photo-conductive surface 14 is determined by the amount of toner particles being transported by developer roller 12- In the embodiment depicted in Figure 1, the toner particles move from developer roll 12 onto electrode 10 and then deposit on the latent image recorded on photoconductive surface 12,

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XEROX DISCLOSURE JOURNAL

DEVELOPMENT ELECTRODE
Lloyd F~ Bean

Proposed Classification
U~S~Cl. 118/650
mt. Cl, G03g 15/06

FIG, /

FIG. 2

Volume 3 Number 5 September/October 1978 295

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Page 2 of 2

DEVELOPMENT ELECTRODE (Cont~d)

In an electrophotographic printing machine, a magnetic brush
developer roller is frequently employed to deposit toner par~
tides on the latent image recorded on a photoconductive
surface, As shown in Figure 1, a flexible electrode 10 is
interposed between developer roller 12 and photoconductive
surface 14. The spacing between electrode 10 and photo~
conductive surface 14 is determined by the amount of toner
particles being transported by developer roller 12~ In the
embodiment depicted in Figure 1, the toner particles move from
developer roll 12 onto electrode 10 and then deposit on the
latent image recorded on photoconductive surface 12,

An alternate embodiment is depicted in Figure 2, wherein e1ec~
trode 10 is perforated, A system of this type prevents toner
blockage in the development zone, Both of the foregoing types
of systems improve development and minimize the occurrence of
halos and toner trails on the copy sheet.

                   XEROX DISCLOSURE JOURNAL
296 Volume 3 Number 5 September/October 1978

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