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:
Dec. 05, 2000
Filed:
Jun. 12, 1998
Dinesh Tyagi, Fairport, NY (US);
David E Tyminski, Webster, NY (US);
Leo G Proctor, Churchville, NY (US);
Domenic Santilli, Webster, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A nonconductive toner composition comprising monodisperse spherical particles includes a binder polymer, a charge control agent, and an aliphatic acid or aliphatic amide uniformly distributed in the particles and present in an amount of 2.5 to 30% by weight of the toner composition. A method of forming a toner particle composition comprises the steps of: milling an aliphatic amide or an aliphatic acid in the presence of a binder polymer and a water-immiscible organic binder solvent to form a concentrate wherein the particle size of the aliphatic amide or aliphatic acid is less than one micrometer; dissolving a binder polymer and a charge control agent in a water-immiscible organic binder solvent to form a binder solution; mixing the aliphatic amide or aliphatic acid concentrate with the binder solution to form an aliphatic amide- or aliphatic acid-binder polymer dispersion; dispersing the aliphatic amide- or aliphatic acid-binder polymer dispersion in water containing a colloidal stabilizer to form an aqueous suspension of droplets; subjecting the droplets to shearing action to reduce droplet size and form limited coalescence particles; removing the water-immiscible organic binder solvent from the limited coalescence particles to form toner particles in an aqueous medium; and drying the toner particles.