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. 04, 2012
Filed:
Feb. 23, 2009
Kouji Noge, Numazu, JP;
Kouji Noge, Numazu, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
A method for preparing a toner including primarily pulverizing a toner composition powder including at least a binder resin and a colorant using a mechanical pulverizer to prepare a first particulate material with a weight average particle diameter of 7 to 30 μm; secondarily pulverizing the first particulate material using a jet air pulverizer having a pulverization plate to prepare a second particulate material; and classifying the second particulate material in two steps to prepare particles of the toner with a weight average particle diameter of 2 to 6 μm and an average circularity of 0.93 to 0.96. A toner including toner particles including at least a binder resin and a colorant and prepared by the method. An image forming apparatus including an image bearing member configured to bear an electrostatic image thereon; and a developing device configured to develop the electrostatic image with a developer including the toner.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile