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. 04, 2007
Filed:
Dec. 01, 2003
Masami Tomita, Numazu, JP;
Toshiki Nanya, Mishima, JP;
Shigeru Emoto, Numazu, JP;
Shinichiro Yagi, Numazu, JP;
Hiroshi Yamada, Numazu, JP;
Naohiro Watanabe, Shizuoka-ken, JP;
Tadao Takigawa, Shinshiro, JP;
Masami Tomita, Numazu, JP;
Toshiki Nanya, Mishima, JP;
Shigeru Emoto, Numazu, JP;
Shinichiro Yagi, Numazu, JP;
Hiroshi Yamada, Numazu, JP;
Naohiro Watanabe, Shizuoka-ken, JP;
Tadao Takigawa, Shinshiro, JP;
Ricoh Company Limited, Yokohama-shi, JP;
Abstract
A dry toner is provided that is prepared by a method including the steps of (A) dissolving or dispersing a toner composition in an organic solvent to prepare a toner composition liquid and (B) dispersing the toner composition liquid in an aqueous liquid which contains a binder resin formed of a modified polyester (i) and a colorant containing a carbon black having a pH not greater than 7, wherein the toner has a volume average particle diameter (Dv) is from 3 to 7 μm and a ratio of the volume average particle diameter (Dv) to a number average particle diameter (Dp) is from 1.00 to 1.25.