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:
Dec. 19, 1995
Filed:
Jan. 27, 1995
Applicant:
Inventors:
Tatsuya Nakamura, Tokyo, JP;
Ichiro Ohsaki, Yokohama, JP;
Takayuki Nagatsuka, Yokohama, JP;
Makoto Kanbayashi, Kawasaki, JP;
Tatsuhiko Chiba, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430137 ; 430109 ;
Abstract
The present invention provides a process for producing a toner having little remaining polymerizable monomer in it by suspension polymerization. During the latter half of the polymerization reaction, the remaining polymerizable monomers and the aqueous medium are evaporated or removed while supplying the aqueous medium, saturated vapor of the aqueous medium, saturated vapor of a water-soluble solvent, or water-soluble gas to maintain the ratio of solid-liquid constant.