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. 09, 1995
Filed:
Oct. 28, 1993
Yoshikuni Mori, Takatsuki, JP;
Mitsuo Kushino, Inagawa, JP;
Nippon Shokubai, Co., Ltd., Osaka, JP;
Abstract
This invention discloses a toner characterized by the toner particles thereof severally possessing a sea-island-lake structure wherein a crystalline (meth)acrylic ester type polymer is present in the form of a plurality of domains in a matrix of a binder resin and a portion of the binder resin is present in the form of a plurality of domains in each of the domains of the polymer. The melt viscosity of the crystalline (meth)acrylic ester type polymer is not less than 50 cPs at 140.degree. C. The toner combines an ability to resist the phenomenon of offset with ideal particle flowability, stability of storage, and charging characteristics.