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:
Oct. 14, 2008
Filed:
Jun. 01, 2005
John Melvin Olson, Boulder, CO (US);
Kasturi Rangan Srinivasan, Longmont, CO (US);
John Melvin Olson, Boulder, CO (US);
Kasturi Rangan Srinivasan, Longmont, CO (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
Chemically prepared toner is manufactured by aggregation in which the binder resin is a latex copolymer having a methacrylic acid ester of long chain, saturated alkyl, which may be lauryl methacrylate. This binder resin has a small amount by weight of acrylic acid component and has other nonionic components, which may be styrene and butyl acrylate moieties. Aggregation is carried out in an aqueous medium, which may have organic solvent components. The aggregation is then heated, and because of the selection of the binder resin to have the long chain ester, the heating step has minimal effect on particle size.