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:
Oct. 07, 1997
Filed:
Jul. 24, 1995
Hirokazu Ito, Toyohashi, JP;
Masahiro Itoh, Toyohashi, JP;
Syuji Takahiro, Nagoya, JP;
Keiji Yoshida, Nagoya, JP;
Motoshi Inagaki, Toyohashi, JP;
Mitsubishi Rayon Company Ltd., Tokyo, JP;
Abstract
A toner resin, comprising a styrene component, an acrylic acid ester component or methacrylic acid ester component or both, and a divinyl monomer component, the resin having a glass transition temperature of 50.degree. to 68.degree. C., a value of tan .delta., which is the ratio of the dynamic loss to the dynamic elastic modulus, of 0.3 to 0.7 as measured at 200.degree. C., a gel fraction of 55 to 83%, and a softening point at which the resin has a melting viscosity of 100,000 poises is 200.degree. to 410.degree. C. A toner having an excellent fixing property, non-offsetting property, and blocking resistance, and able to be used with a high-temperature high-speed copying machine is formed from this toner resin.