Browse Prior Art Database

FLOATING HALO BAFFLE

IP.com Disclosure Number: IPCOM000023154D
Original Publication Date: 1976-Dec-31
Included in the Prior Art Database: 2004-Mar-27
Document File: 2 page(s) / 303K

Publishing Venue

Xerox Disclosure Journal

Abstract

Baffles are utilized in conventional xerographic machines for guiding a sheet into contact with the photoconductive surface for image transfer, In some machines the baffle also serves to prevent corona from prematurely reaching the sheet before image transfer is to occur, In these systems a large spacing has been required between the baffle and the drum to compensate for tolerances of the respective parts. In a high humidity environment the paper becomes very wavey. As the trail edge of the sheet makes contact with the photoconductive surface these waves prevent total contact, thereby causing image deletions,

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XEROX DISCLOSURE JOURNAL

FLOATING HALO BAFFLE Proposed Classification
Michael Tracy U.S. Cl, 355/3R
Richard Schell mt. Cl, G03g 15/00

Baffles are utilized in conventional xerographic machines
for guiding a sheet into contact with the photoconductive
surface for image transfer, In some machines the baffle
also serves to prevent corona from prematurely reaching
the sheet before image transfer is to occur, In these
systems a large spacing has been required between the
baffle and the drum to compensate for tolerances of the
respective parts. In a high humidity environment the
paper becomes very wavey. As the trail edge of the sheet
makes contact with the photoconductive surface these waves
prevent total contact, thereby causing image deletions,

It is proposed to provide a baffle 1 which can be spaced
very close to the surface of the imaging drum I to provide
a very small gap G, Such a baffle 1 would flatten out the
sheet against the drum to provide deletion free image trans~
fer, The small gap G is attained by floating the baffle I
against the drum I.

The Figure shows a floating baffle 1 which extends slightly
over the lead edge of the transfer corona generator 2, A
sheet 3 is fed to the drum I over guide wheel 4 to reduce
drag. It is flattened against the drum as it passes
through the gap G between a pivotally supported baffle
plate 5 and the drum, Follower shoes 6 are provided at the
ends of the plate 5 to ride against the outer ends of the
drum in non~image areas, A spring 7 is utilized...