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:
Aug. 21, 2012
Filed:
Dec. 09, 2008
Applicants:
Kimberly D. Nosella, Mississauga, CA;
Enno E. Agur, Toronto, CA;
Shigang Qiu, Toronto, CA;
KE Zhou, Oakville, CA;
Inventors:
Kimberly D. Nosella, Mississauga, CA;
Enno E. Agur, Toronto, CA;
Shigang Qiu, Toronto, CA;
Ke Zhou, Oakville, CA;
Assignee:
Xerox Corporation, Norwalk, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/08 (2006.01); G03G 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present disclosure provides processes for increasing the shelf life and stability of resin emulsions suitable for use in forming toner particles. In embodiments, the pH of the resin emulsion is monitored, and a base is added as needed to maintain the pH of the emulsion at from about 6.5 to about 8. Maintaining the pH at from about 6.5 to about 8 prevents the degradation of the resin in the emulsion, including its molecular weight.