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. 24, 1978
Filed:
May. 30, 1974
Lewis O Jones, Webster, NY (US);
Robert Mermelstein, Rochester, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
Classified toner materials having a particle size number distribution with a fine index ratio of less than about 2.50, a particle size volume distribution with a coarse index ratio less than about 1.50, and a particle size distribution wherein less than about 30.0 percent by number of the toner particles have an average particle size diameter of less than about 5 microns, about 25 percnt of the particles have a diameter between about 8 microns and about 12 microns and less than about 5 percent by number of the toner particles have an average particle diameter greater than about 20 microns. The toner materials may be mixed with carrier materials to form electrostatographic developer mixtures.