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BLENDING PROCESS FOR EXTENDED COLOR PALETTE TONER

IP.com Disclosure Number: IPCOM000026999D
Original Publication Date: 1994-Oct-31
Included in the Prior Art Database: 2004-Apr-07
Document File: 1 page(s) / 52K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a sequential addition blending process for the preparation of extended color palette toners. An extended color palette toner is a toner prepared by blending two different colored toners to arrive at a third different colored toner, for example, blending specified ratios of yellow and blue toner to arrive at a specific green toner. It has been found that certain toners do not blend well together, for example, because of differences in charge properties and surface properties of the respective toners. These blended toners have a tendency to separate from one another when dispensed into an operating developer housing. The present process comprises blending a specified amount of a surface additive onto a first toner to adjust the first toner charge to match the charge on a second toner, then adding and blending the second toner plus remaining additives. The surface additives may be selected, for example, from AEROSILS* and zinc stearate. The resultant extended color palette or custom color toner possesses the desired color properties, flow properties, and charging properties.

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XEROX DISCLOSURE JOURNAL

BLENDING PROCESS FOR Proposed Classification EXTENDED COLOR PALETTE US. C1.430/109 TONER Int. C1. G03g 09/08 Jeffrey L. DeBarr
Charles G. Dickerson

Disclosed is a sequential addition blending process for the preparation of extended color palette toners. An extended color palette toner is a toner prepared by blending two different colored toners to arrive at a third different colored toner, for example, blending specified ratios of yellow and blue toner to arrive at a specific green toner. It has been found that certain toners do not blend well together, for example, because of differences in charge properties and surface properties of the respective toners. These blended toners have a tendency to separate from one another when dispensed into an operating developer housing. The present process comprises blending a specified amount of a surface additive onto a first toner to adjust the first toner charge to match the charge on a second toner, then adding and blending the second toner plus remaining additives. The surface additives may be selected, for example, from AEROSILS* and zinc stearate. The resultant extended color palette or custom color toner possesses the desired color properties, flow properties, and charging properties.

XEROX DISCLOSURE JOURNAL - Vol. 19, No. j: September/October 1994 425

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