发明名称 |
Electrostatic image developing toner |
摘要 |
The object of the present invention is to provide an electrostatic image developing toner excellent in providing high image quality and excellent in low-temperature fixation performance and environmental stability. The present invention is an electrostatic image developing toner having a toner base particle containing at least a binder resin and a colorant, and an external additive, wherein the toner base particle has a core-shell structure having a core particle and a shell layer, the toner base particle has a resin coating layer of a water-soluble resin on the surface of the core particle, and has the shell layer on the resin coating layer. |
申请公布号 |
US9612544(B2) |
申请公布日期 |
2017.04.04 |
申请号 |
US201615054965 |
申请日期 |
2016.02.26 |
申请人 |
MITSUBISHI CHEMICAL CORPORATION |
发明人 |
Nakagawa Tomoko;Yanagibori Akihiko |
分类号 |
G03G9/093;G03G9/09 |
主分类号 |
G03G9/093 |
代理机构 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
代理人 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
主权项 |
1. An electrostatic image developing toner comprising a toner base particle containing at least a binder resin and a colorant, and an external additive, wherein:
the toner base particle has a core-shell structure having a core particle and a shell layer, the toner base particle has a resin coating layer of a water-soluble resin on the surface of the core particle, and has the shell layer on the resin coating layer, and the shell layer is formed of a particle comprising a resin as a main ingredient, and when a glass transition temperature of a polymer primary particle to constitute the core particle is referred to as Tg1, and a glass transition temperature of the particle to constitute the shell layer is referred to as Tg2, the Tg1 and Tg2 satisfy the following relationship:
25° C.≦Tg1≦45° C.55° C.≦Tg2Tg2−Tg1≧20. |
地址 |
Chiyoda-ku JP |