US Patent 7858281 Acid-base property considerations for improved additive attachment on toner

Patent 7858281 was granted and assigned to Xerox on December, 2010 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

Xerox

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

78582810

Patent Inventor Names

Richard P. N. Veregin0

Maria N. V. McDougall0

Date of Patent

December 28, 2010

Patent Application Number

119436830

Date Filed

November 21, 2007

Patent Primary Examiner

‌

Mark A Chapman

Patent abstract

A developer comprised of a toner and at least one external surface additive, wherein an acid-base interaction has an Interaction Surface Parameter (ISP) of greater than 0, and wherein ISP is defined by the following equation: [(Ka)toner×(Kb)additive]+[(Kb)toner×(Ka)additive]−[(Ka)toner×(Ka)additive]−[(Kb)toner×(Kb)additive], wherein Ka is the Lewis acid value and Kb is the Lewis base value.

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