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DEVELOPER COMPOSITIONS WITH MODIFIED CHARGE ENHANCING ADDITIVES

IP.com Disclosure Number: IPCOM000025694D
Original Publication Date: 1987-Apr-30
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 68K

Publishing Venue

Xerox Disclosure Journal

Abstract

Improved positively charged developer compositions comprised of toner compositions containing resin particles, pigment particles and modified charge enhancing additives comprised of flow aid compositions, such as silicas, aluminum oxides, and titanium oxides having chemically bonded thereto, or chemiadsorbed on the surface thereof amino alcohol derivatives comprising at least one hydroxyl group, and at least one amino substituent selected from the group consisting of primary amines, secondary amines, and tertiary amines; and carrier particles. In addition, there can be selected as the modified charge enhancing additives amino alcohols reacted with a component selected from the group consisting of an alkylating compound or a protonic acid enabling surface modified flow aid additives containing partially or completely substituted quaternary ammonium salts. Furthermore, the charge enhancing moiety, which is chemically bonded or chemiadsorbed on to the surface of the flow aid compositions, can be prepared by first treating the flow aid compositions with an amine containing silylating compound followed by the subsequent reaction thereof with an alkylating component or an acid component thereby enabling surface modified flow aid additives containing partially or completely reacted quaternary ammonium salts. Additionally, the charge enhancing additive moiety, which is chemically bonded to or chemiadsorbed onto the surface of the flow aid composition, can be prepared the flow aid composition with an epoxide-containing silylating

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XEROX DISCLOSURE JOURNAL

DEVELOPER COMPOSITIONS WITH Proposed Classification MODIFIED CHARGE ENHANCING U.S. C1.430/109 ADDITIVES Int. C1. G03g 9/00 John W. Lin
Paul C. Julien
Lesley P. Dudek

Improved positively charged developer compositions comprised of toner compositions containing resin particles, pigment particles and modified charge enhancing additives comprised of flow aid compositions, such as silicas, aluminum oxides, and titanium oxides having chemically bonded thereto, or chemiadsorbed on the surface thereof amino alcohol derivatives comprising at least one hydroxyl group, and at least one amino substituent selected from the group consisting of primary amines, secondary amines, and tertiary amines; and carrier particles. In addition, there can be selected as the modified charge enhancing additives amino alcohols reacted with a component selected from the group consisting of an alkylating compound or a protonic acid enabling surface modified flow aid additives containing partially or completely substituted quaternary ammonium salts. Furthermore, the charge enhancing moiety, which is chemically bonded or chemiadsorbed on to the surface of the flow aid compositions, can be prepared by first treating the flow aid compositions with an amine containing silylating compound followed by the subsequent reaction thereof with an alkylating component or an acid component thereby enabling surface modified flow aid additives containing partially or completely reacted...