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:
Apr. 30, 2013
Filed:
Oct. 18, 2010
Kyeong Pang, Suwon-si, KR;
Jae-hwan Kim, Seoul, KR;
Jin-mo Hong, Yongin-si, KR;
Yo-da Shin, Suwon-si, KR;
Su-bum Park, Daeou, KR;
Jeong-hyun Lee, Suwon-si, KR;
Mi-rim Cho, Seoul, KR;
Kyeong Pang, Suwon-si, KR;
Jae-hwan Kim, Seoul, KR;
Jin-mo Hong, Yongin-si, KR;
Yo-da Shin, Suwon-si, KR;
Su-bum Park, Daeou, KR;
Jeong-hyun Lee, Suwon-si, KR;
Mi-rim Cho, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon-Si, KR;
Abstract
Toner for developing an electrostatic image, which satisfies charging stability, low-temperature fixability, high-temperature storage characteristics, and durability with respect to an environment up to a predetermined level or above, and a method of preparing the toner. The toner includes: a core layer including a first binder resin, a colorant, and a releasing agent; and a shell layer covering the core layer and including a second binder resin, wherein the first binder resin includes about 70 wt % or above of amorphous polyester resin and about 30 wt % or below of crystalline polyester resin, the second binder resin includes an amorphous polyester resin, and a melting temperature (Tm(C)) of the crystalline polyester resin, a melting temperature (Tm(W)) of the releasing agent, and a melting point (Tm(T)) of the toner satisfy the following conditions: −20° C.≦Tm(W)−Tm(C)≦20° C.; and 0° C.<Tm(C)−Tm(T)≦10° C.