Browse Prior Art Database

PROCESS FOR RECLAIMING ELECTROSTATOGRAPHIC STEEL CARRIERS

IP.com Disclosure Number: IPCOM000022764D
Original Publication Date: 1976-Jan-31
Included in the Prior Art Database: 2004-Mar-26
Document File: 2 page(s) / 171K

Publishing Venue

Xerox Disclosure Journal

Abstract

A process for reclaiming spent steel electrostatographic carrier particles. The process comprises first removing loosely adhering toner particles from the carrier particles by air blow-off. The carrier particles are then placed in a ball-mill in the presence of a dilute solution of a sur-~ factant and sodium phosphate. After ball-milling, the carrier particles are rinsed and dried. The carrier particles reclaimed have a shiny surface and are free of residual coating and loose scale.

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XEROX DISCLOSURE JOURNAL

PROCESS FOR RECLAIMING Proposed Classification
ELECTROSTATOGRAPHIC STEEL U.S. Cl. 252/62.1
CARRIERS mt. Cl. G03g 9/00
C. H. Lu

A process for reclaiming spent steel electrostatographic
carrier particles. The process comprises first removing
loosely adhering toner particles from the carrier particles
by air blow-off. The carrier particles are then placed in
a ball-mill in the presence of a dilute solution of a sur-~
factant and sodium phosphate. After ball-milling, the
carrier particles are rinsed and dried. The carrier
particles reclaimed have a shiny surface and are free of
residual coating and loose scale.

The surfactant may be anionic, cationic, or nonionic, The
phosphate may be monobasic, dibasic, or tribasic, The rinse
water may contain a small amount of chromic acid to inhibit
corrosion of the processed beads. Attrition objects may be
employed in the ball-mill to improve cleaning and polishing
of the carrier particles.

Volume 1 Number 1 January 1976 77

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78 XEROX DISCLOSURE JOURNAL

Volume 1 Number 1 January 1976

[This page contains 1 picture or other non-text object]