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:
Jun. 26, 2012
Filed:
Jul. 23, 2009
Mikio Koyama, Tokyo, JP;
Kenji Hayashi, Tokyo, JP;
Hiroaki Obata, Tokyo, JP;
Noriyuki Kinpara, Tokyo, JP;
Hiroshi Nagasawa, Tokyo, JP;
Yasuhiko Muramatsu, Tokyo, JP;
Mikio Koyama, Tokyo, JP;
Kenji Hayashi, Tokyo, JP;
Hiroaki Obata, Tokyo, JP;
Noriyuki Kinpara, Tokyo, JP;
Hiroshi Nagasawa, Tokyo, JP;
Yasuhiko Muramatsu, Tokyo, JP;
Konica Minolta Business Technologies, Inc., Tokyo, JP;
Abstract
The object aims to improve the reproducibility of color and the stability in density of a toner. Disclosed is a toner comprising at least a resin and a colorant, wherein the colorant comprises a compound represented by general formula (1) and a compound represented by general formula (2). [In general formula (1), Rto Rrespectively denote a hydrogen atom, a halogen atom, an alkyl group, or an alkyl group containing a fluorine atom, provided that at least one of Rto Rdenotes a chlorine atom]. [In general formula (2), Rto Rrespectively denote a hydrogen atom, or an alkyl group having 1 to 4 carbon atoms; Rand Rrespectively denote a hydrogen atom, or an alkyl group having 1 to 2 carbon atoms; Rdenotes a hydrogen atom, or an alkyl group having 1 to 4 carbon atoms; m denotes a number of 1 or 2; Adenotes a chlorine ion or a sulfonic acid compound ion; and n denotes a number of 1 or 2.