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. 29, 2019
Filed:
Jun. 28, 2018
Applicant:
Zeon Corporation, Tokyo, JP;
Inventors:
Takeru Chiba, Tokyo, JP;
Hiroshi Nakatani, Tokyo, JP;
Assignee:
ZEON CORPORATION, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/08 (2006.01); G03G 9/087 (2006.01); G03G 9/093 (2006.01); G03G 9/09 (2006.01); G03G 9/097 (2006.01); C08J 3/00 (2006.01); G03G 9/083 (2006.01);
U.S. Cl.
CPC ...
G03G 9/08 (2013.01); C08J 3/005 (2013.01); G03G 9/081 (2013.01); G03G 9/0802 (2013.01); G03G 9/087 (2013.01); G03G 9/0839 (2013.01); G03G 9/08711 (2013.01); G03G 9/08782 (2013.01); G03G 9/08797 (2013.01); G03G 9/0904 (2013.01); G03G 9/09314 (2013.01); G03G 9/09733 (2013.01); G03G 9/09741 (2013.01); G03G 9/09775 (2013.01); C08L 2205/00 (2013.01);
Abstract
Disclosed is a method for producing a toner comprising combining a binder resin, a wax, a negatively-chargeable charge control resin and a colorant to form the toner, prior to said combining, the negatively-chargeable charge control resin is obtained by drying treatment conducted for 2 to 24 hours under conditions of a drying temperature of 45 to 80° C. and a pressure of 0.5 to 20 kPa, wherein the negatively-chargeable charge control resin comprises a monomer unit having a functional group that imparts a negative charging property, a vinyl aromatic hydrocarbon monomer unit, and a (meth)acrylate monomer unit.