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. 06, 2009
Filed:
Dec. 21, 2007
Rina Carlini, Oakville, CA;
Jeffrey H. Banning, Hillsboro, OR (US);
C. Geoffrey Allen, Waterdown, CA;
Sandra J. Gardner, Oakville, CA;
Jonathan Siu-chung Lee, Oakville, CA;
Rina Carlini, Oakville, CA;
Jeffrey H. Banning, Hillsboro, OR (US);
C. Geoffrey Allen, Waterdown, CA;
Sandra J. Gardner, Oakville, CA;
Jonathan Siu-Chung Lee, Oakville, CA;
Xerox Corporation, Norwalk, CT (US);
Abstract
A nanoscale pigment particle composition includes an organic monoazo laked pigment including at least one functional moiety, and a sterically bulky stabilizer compound including at least one functional group, wherein the mono-azo laked pigment includes a nono-azo dye molecule laked with a divalent metal cation; the functional moiety associates non-covalently with the functional group; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized pigment particles. Non-aqueous dispersion compositions, such as ink compositions, contain a polymeric dispersant, an organic liquid, and the nanoscale pigment particle composition.