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. 06, 1998
Filed:
Oct. 27, 1997
Asao Matsushima, Hachioji, JP;
Shigenori Kouno, Hachioji, JP;
Kazuya Isobe, Hachioji, JP;
Yoshiaki Kobayashi, Hachioji, JP;
Kaori Soeda, Hachioji, JP;
Meizo Shirose, Hachioji, JP;
Konica Corporation, , JP;
Abstract
Toner for developing electro-static image is disclosed. The toner comprises at least a resin and a colorant, and the resin is composed of a vinyl-based polymer. The component dissolved in tetrahydrofuran (THF) of the resin has a peak molecular weight at the molecular weight region of 5,000 or more and less than 150,000 and at the molecular weight region of 300,000 or more and less than 500,000. The storage elastic module G'.sub.160 at 160.degree. C. of the toner is 500-1200 dyn/cm.sup.2 and loss elastic module G'.sub.160 at 160.degree. C. of the toner is 1500-3000 dyn/cm.sup.2.