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:
Sep. 08, 2009
Filed:
Mar. 15, 2006
Masashi Miyakawa, Numazu, JP;
Noboru Kuroda, Izunokuni, JP;
Kazuyuki Matsui, Fuji, JP;
Hiroshi Takahashi, Numazu, JP;
Takahiro Kadota, Numazu, JP;
Masashi Miyakawa, Numazu, JP;
Noboru Kuroda, Izunokuni, JP;
Kazuyuki Matsui, Fuji, JP;
Hiroshi Takahashi, Numazu, JP;
Takahiro Kadota, Numazu, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A method of manufacturing a toner including dissolving or dispersing a toner component containing a colorant and a resin in an organic solvent to obtain a liquid solution or dispersion, continuously emulsifying and dispersing the liquid solution or dispersion in an aqueous medium containing a particulate dispersant to obtain emulsified primary particles, controlling cohesion and agglomeration of the emulsified primary particles and removing the organic solvent, such that the ratio (T/T) of the arithmetic mean accumulation time (T) of the emulsified primary particles obtained in the controlling step to the arithmetic mean accumulation time (T) of the emulsified primary particles obtained in the continuously emulsifying and dispersing step is from 1 to 5.