The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 13, 2009
Filed:
Jan. 09, 2007
Steven M. Malachowski, East Rochester, NY (US);
Amy A. Grillo, Rochester, NY (US);
Eugene F. Young, Rochester, NY (US);
Steven M. Malachowski, East Rochester, NY (US);
Amy A. Grillo, Rochester, NY (US);
Eugene F. Young, Rochester, NY (US);
Xerox Corporation, Norwalk, CT (US);
Abstract
Herein is disclosed a process for producing emulsion aggregation toner including (i) adding a base to an emulsion aggregation toner to increase the pH of the toner to from about 7 to about 12; (ii) sieving and filtering the toner; (iii) washing the toner with an enzyme selected from the group consisting of carboxylic ester hydrolase and sulfuric ester hydrolase; (iv) filtering the toner; (v) washing the toner with reverse osmosis or deionized water; and (vi) adding an acid to reduce the pH of the toner to from about 3 to about 8.