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:
Jul. 18, 2006
Filed:
Dec. 17, 2003
Nobuyasu Ota, Tokyo, JP;
Toshihiko Yamato, Tokyo, JP;
Nobuyasu Ota, Tokyo, JP;
Toshihiko Yamato, Tokyo, JP;
Zeon Corporation, Tokyo, JP;
Abstract
The present invention relates to a method for manufacturing a toner with adjusted particle size distribution having a step of preparing colored particles that contain a binder resin and a colorant, and a step of classifying the colored particles. In the classification step, a classifier that has a plurality of vane-wheel classifying rotors coaxially in a casing, enables the rotating speed of each classifying rotor to be set to be the same as or different from each other, and can simultaneously perform a plurality of stages of classification corresponding to each classifying rotor is used; and the powder material comprising colored particles to which a fluidizing agent is added is fed to the classifier to perform classification.