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:
Jan. 01, 2013
Filed:
Nov. 16, 2009
Applicants:
Yasuaki Tomioka, Iwanuma, JP;
Yousuke Suzuki, Numazu, JP;
Inventors:
Yasuaki Tomioka, Iwanuma, JP;
Yousuke Suzuki, Numazu, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of manufacturing a toner including manufacturing a coarse toner containing a binder resin and a coloring agent, and screening the coarse toner with a screen device including a top screen having an opening of from 26 to 43 μm and a bottom screen situated below the top screen having an opening of from 54 to 150 μm to screen the coarse toner with the top screen by ultrasonic vibration and mechanical vibration at 50° C. or lower, and with the bottom screen by mechanical vibration at 35° C. or lower.