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. 20, 2008
Filed:
Jun. 22, 2004
Sonoh Matsuoka, Numazu, JP;
Ryohta Inoue, Numazu, JP;
Masahiro Ohki, Numazu, JP;
Takeshi Takada, Numazu, JP;
Chiaki Tanaka, Tagata-gun, JP;
Naohiro Watanabe, Suntou-gun, JP;
Masahide Yamada, Numazu, JP;
Sonoh Matsuoka, Numazu, JP;
Ryohta Inoue, Numazu, JP;
Masahiro Ohki, Numazu, JP;
Takeshi Takada, Numazu, JP;
Chiaki Tanaka, Tagata-gun, JP;
Naohiro Watanabe, Suntou-gun, JP;
Masahide Yamada, Numazu, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
A toner including a binder; a colorant; and a wax, wherein the binder includes a polyester resin; and a reaction product of a polymer having a group capable of reacting with an active hydrogen with a compound having an active hydrogen, wherein the polyester resin includes tetrahydrofuran(THF)-soluble resin components in an amount of from 50 to 85% by weight; and chloroform-insoluble components in an amount of from 0 to 30% by weight, and wherein the toner satisfies the following relationship (1):5% by weight<(C1-C2)<60% by weight   (1)wherein C1 represents a content of chloroform-insoluble components in the toner in units of % by weight and C2 represents a content of the colorant therein in units of % by weight.