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:
Aug. 18, 2009
Filed:
Dec. 06, 2005
Katsumi Daimon, Minamiashigara, JP;
Kazufumi Tomita, Minamiashigara, JP;
Moegi Iguchi, Minamiashigara, JP;
Yasuo Matsumura, Minamiashigara, JP;
Yusuke Ikeda, Minamiashigara, JP;
Shigeru Hayashi, Minamiashigara, JP;
Shuji Sato, Minamiashigara, JP;
Takashi Imai, Minamiashigara, JP;
Yosuke Tsurumi, Minamiashigara, JP;
Hiroshi Nakazawa, Minamiashigara, JP;
Katsumi Daimon, Minamiashigara, JP;
Kazufumi Tomita, Minamiashigara, JP;
Moegi Iguchi, Minamiashigara, JP;
Yasuo Matsumura, Minamiashigara, JP;
Yusuke Ikeda, Minamiashigara, JP;
Shigeru Hayashi, Minamiashigara, JP;
Shuji Sato, Minamiashigara, JP;
Takashi Imai, Minamiashigara, JP;
Yosuke Tsurumi, Minamiashigara, JP;
Hiroshi Nakazawa, Minamiashigara, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
The present invention provides a toner for electrophotography having a capsule structure including a core and a shell that covers the core, wherein the core contains a colorant, a releasing agent, an amorphous resin, and a block polymer containing a crystalline part and an amorphous part, the weight-average molecular weight of the block polymer is 10,000 or more, the weight-average molecular weight of the resin used in formation of the amorphous part of the block polymer is 1000 to 5000, and the weight-average molecular weight of the resin used in formation of the crystalline part of the block polymer is at least 2 times the weight-average molecular weight of the resin used in formation of the amorphous part of the block polymer, a method of manufacturing the same, a developer for electrophotography including the toner and a carrier, and an image forming method using the developer for electrophotography.