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. 10, 1997
Filed:
Mar. 05, 1996
Yasuo Yamamoto, Minami-ashigara, JP;
Susumu Saito, Minami-ashigara, JP;
Yutaka Sugizaki, Minami-ashigara, JP;
Kaoru Torikoshi, Minami-ashigara, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A color toner and a black toner for electrostatic charge development comprises a binder resin and a colorant, wherein the binder resin comprises a polyester resin containing (a) an ethoxylated bisphenol type diol, (b) a propoxylated bisphenol type diol and (c) an aromatic dicarboxylic acid or an anhydride or ester thereof, as main monomer components, and the polyester resin further containing (d) at least one compound selected from the group consisting of alkylsuccinic acids, acid anhydrides and esters thereof, alkenylsuccinic acids, and acid anhydrides and esters thereof in an amount of 7 to 25 mol % based on the total monomer amount of the polyester resin, and the colorant is a flushing pigment comprising hydrous paste of an organic pigment and the polyester resin, or comprising a carbon black having a primary particle size of from not less than 30 nm to not more than 50 nm. Furthermore, a method for producing the color toner and the black toner, and an method for forming a full color image using the color toners or using the color toners and the black toner in combination, are disclosed.