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:
May. 06, 2003
Filed:
Sep. 20, 2001
Applicant:
Inventors:
Assignee:
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/08 ;
U.S. Cl.
CPC ...
G03G 9/08 ;
Abstract
A toner composition that permits printing of clear-cut and high image quality without developing a fog or a blur is provided. Binder resin particles manufactured through a dispersing polymerization method are colored using a dye and are then subjected to a process of injecting an organic finely divided powder and a charge controlling agent and to a process of externally adding a hydrophobic silica and a conductive titanium oxide, thereby making a toner composition having an average particle diameter by volume of 7 &mgr;m or less, a coagulation level of 10% or less, and an external additive coating ratio of 70% or less