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. 03, 2011
Filed:
Nov. 08, 2007
Jae-hyeuk Jeong, Suwon-si, KR;
Kyung-yol Yon, Seongnam-si, KR;
Min-young Cheong, Seoul, KR;
Kyeong Pang, Suwon-si, KR;
Yo-da Shin, Incheon Metropolitan, KR;
Hae-ree Joo, Seoul, KR;
Jae-hyeuk Jeong, Suwon-si, KR;
Kyung-yol Yon, Seongnam-si, KR;
Min-young Cheong, Seoul, KR;
Kyeong Pang, Suwon-si, KR;
Yo-da Shin, Incheon Metropolitan, KR;
Hae-ree Joo, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Abstract
A toner for electrophotography is provided including a binder resin, a colorant, a charge control agent, and a release agent, wherein a glass transition temperature (Tg) is over 55° C., a molecular weight distribution (MWD) is in the range of about 4.5 to 5.5 when a weight average molecular weight is in the range of about 45,000 to 55,000, and a compression elastic modulus is about 750 MPa or higher at room temperature. Mechanical properties of toner can be obtained at room temperature by controlling rheological properties of toner. The developing properties and fixing properties of toner for electrophotography can be improved by lowering viscosity at a high temperature, and thus image quality can be stabilized.