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:
Feb. 02, 2010
Filed:
Dec. 15, 2006
Xiqiang Yang, Webster, NY (US);
Dinesh Tyagi, Fairport, NY (US);
Lloyd A. Lobo, Rochester, NY (US);
Patrick M. Lambert, Rochester, NY (US);
Sandra G. Taft, Rochester, NY (US);
Xiqiang Yang, Webster, NY (US);
Dinesh Tyagi, Fairport, NY (US);
Lloyd A. Lobo, Rochester, NY (US);
Patrick M. Lambert, Rochester, NY (US);
Sandra G. Taft, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
The present invention is a method for the preparation of electrostatographic toner including the following steps. A polymer material is dissolved in an organic solvent to form an organic phase. The organic phase is dispersed in an aqueous phase that includes a particulate stabilizer and a salt including an anion selected from chloride, oxychloride, sulfate, perchlorate, nitrate, dihydrogen phosphate, lactate, trifluoromethylsulfonate, and trifluromethylhydrate and a cation selected from aluminum, iron (III), tin (II) and zirconium (IV), to form a dispersion. The dispersion is homogenized. The organic solvent is evaporated from the dispersion and the resultant product is recovered, washed and dried. In an alternate method the salt is added directly to the dispersion.