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. 07, 2011
Filed:
Dec. 08, 2005
Hideo Maehata, Minamiashigara, JP;
Susumu Yoshino, Minamiashigara, JP;
Noriyuki Mizutani, Minamiashigara, JP;
Satoshi Yoshida, Minamiashigara, JP;
Hideo Maehata, Minamiashigara, JP;
Susumu Yoshino, Minamiashigara, JP;
Noriyuki Mizutani, Minamiashigara, JP;
Satoshi Yoshida, Minamiashigara, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
An electrostatic image developing toner comprising a non-crystalline polyester resin, wherein the non-crystalline polyester resin is obtained by copolymerizing monomers in the presence of a titanium catalyst; the monomers comprise a polyhydric alcohol component and a monomer containing a sulfonic acid group, the polyhydric alcohol component comprises a propylene oxide adduct of bisphenol A, a ratio of an amount of the monomer containing a sulfonic acid group to the total amount of the non-crystalline polyester resin is 0.1 mol % to 20 mol %, and a content of titanium is 1 ppm to 1000 ppm by weight based on the amount of the resin. The invention also provides a method for producing the same, an electrostatic image developer and image forming method using the toner.