Browse Prior Art Database

TEDLAR COATED CARRIERS

IP.com Disclosure Number: IPCOM000027118D
Original Publication Date: 1995-Apr-30
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 64K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed are low coating weight TEDLAR@ coated carrier compositions for use in electrophotographic latent image development processes of copying and printing machines. In example formulation preparations, unoxidized Hoeganaes iron core particles were mixed with TEDLAR" powder (DuPont) over the weight percent loading range of about 0.02 to about 0.08 in a Munson mixer and then fused in a seven inch kiln at about 400 OF. The resulting coated carriers had triboelectric and conductivity values shown in the table.

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XEROX DISCLOSURE JOURNAL

0.35

0.05

TEDLAR@ COATED CARRIERS Proposed Classification Deepak R. Maniar US. C1.430/108
John A. Creatura
C1. Int. Peter F. Erhardt G03g 09/10

-28.6 1.1 x 10-8 -31.1 3.3 x 10-9

Disclosed are low coating weight TEDLAR@ coated carrier compositions for use in electrophotographic latent image development processes of copying and printing machines. In example formulation preparations, unoxidized Hoeganaes iron core particles were mixed with TEDLAR" powder (DuPont) over the weight percent loading range of about 0.02 to about 0.08 in a Munson mixer and then fused in a seven inch kiln at about 400 OF. The resulting coated carriers had triboelectric and conductivity values shown in the table.

The tribo values range from about 23.4 microcoulombs per gram to about 33.9 microcoulombs per gram and a conductivity range of 3.5 X

(ohm-cm)-'. The carriers performed well in actual machine use and provided excellent copy quality on resulting prints. A preferred TEDLAR" coating weight range is 0.02% to about 0.05%.

to 1.4 X

I 0.025 I -26.5 I 3.4x10-8 I

XEROX DISCLOSURE JOURNAL - Vol. 20, No. 2 March/April 1995 199

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TEDLAR@ COATED CARRIERS (Cont'd)

REFERENCE

TEDLAR@ coated carriers are known which employ considerably higher coating weights as disclosed, for exmaple, in U.S. Patent No. 4,948,686.

200 XEROX DISCLOSURE JOURNAL - Vol. 20, No. 2 MarchiApril 1995

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