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:
Mar. 25, 2008
Filed:
Aug. 04, 2004
Ryohta Inoue, Numazu, JP;
Naohiro Watanabe, Suntoh-gun, JP;
Masahide Yamada, Numazu, JP;
Sonoh Matsuoka, Numazu, JP;
Chiaki Tanaka, Tagata-gun, JP;
Takeshi Takada, Yokohama, JP;
Masahiro Ohki, Numazu, JP;
Akinori Saitoh, Numazu, JP;
Ryohta Inoue, Numazu, JP;
Naohiro Watanabe, Suntoh-gun, JP;
Masahide Yamada, Numazu, JP;
Sonoh Matsuoka, Numazu, JP;
Chiaki Tanaka, Tagata-gun, JP;
Takeshi Takada, Yokohama, JP;
Masahiro Ohki, Numazu, JP;
Akinori Saitoh, Numazu, JP;
Ricoh Company Limited, Tokyo, JP;
Abstract
A toner including toner particles comprising a binder resin; and at least two kinds of particulate resins which are located on at least a surface of the toner particles, wherein the toner satisfies at least one of the following relationships (TgA-TgB)≧20° C., wherein TgA and TgB represent glass transition temperatures (Tg) of a particulate resin (A) having a highest Tg and a particulate resin (B) having a lowest Tg among the at least two kinds of particulate resins, respectively; and 100,000≦Mwc≦6,000,000 and 8,000≦Mwd≦800,000, wherein Mwc and Mwd represent weight average molecular weights (Mw) of a particulate resin (C) having a highest Mw and a particulate resin (D) having a lowest Mw among the at least two kinds of particulate resins, respectively, wherein Mwc>Mwd.