US Patent 7662535 Toner particles of controlled morphology

Patent 7662535 was granted and assigned to Eastman Kodak on February, 2010 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Eastman Kodak

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7662535

Date of Patent

February 16, 2010

Patent Application Number

11611208

Date Filed

December 15, 2006

Patent Primary Examiner

‌

Mark A Chapman

Patent abstract

The present invention is a method for the preparation of electrostatographic toner that includes the following steps. A polymer material is dissolved in an organic solvent to form an organic phase that includes a metal complex of zinc dimethyldithiocarbamate; zinc diethyldithiocarbamate; dibenzyldithiocarbamate, zinc di-n-butyldithiocarbamate. The organic phase is dispersed in an aqueous phase that includes a particulate stabilizer to form a dispersion and the resultant dispersion is homogenized. The organic solvent is evaporated and the resultant product is recovered, washed and dried.