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:
Aug. 20, 1996
Filed:
Nov. 14, 1994
Sekisui Chemical Co., Ltd., Osaka, JP;
Abstract
To provide a toner resin composition and toner which has superior anti-offset properties, low temperature fixability and anti-blocking properties, and gives sufficiently stable high-quality images even when copying is done over a long duration of time. This toner resin composition is a toner resin composition comprising a low molecular weight vinyl polymer component and a high molecular weight vinyl polymer component which comprising styrene-type monomers and (meth)acrylic esters as structural units of said polymer components and having peaks of the molecular weight distribution in the region of molecular weights from about 4.times.10.sup.3 to about 8.times.10.sup.4 and in the region of molecular weights from about 1.times.10.sup.5 to about 4.times.10.sup.6, wherein said high molecular weight vinyl polymer component contains about 97 wt % or more of styrene-type monomers as structural units for said polymer component, and a styrene polymer with a weight average molecular weight of about 300,000 or higher, or a gel content of about 20 wt % or higher makes up 50 wt % or more of it. The target toner is obtained by using this toner resin composition.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile