基本信息:
- 专利标题： MAGNETIC TONER
- 专利标题（中）：磁性墨粉
- 申请号：US14364633 申请日：2013-01-31
- 公开(公告)号：US20140342277A1 公开(公告)日：2014-11-20
- 发明人： Atsuhiko Ohmori , Michihisa Magome , Yusuke Hasegawa , Keisuke Tanaka
- 申请人： CANON KABUSHIKI KAISHA
- 优先权： JP2012-019517 20120201
- 国际申请： PCT/JP2013/052787 WO 20130131
- 主分类号： G03G9/083
- IPC分类号： G03G9/083
摘要：
The magnetic toner contains: magnetic toner particles containing a binder resin and a magnetic body; and inorganic fine particles present on the surface of the magnetic toner particles, wherein the inorganic fine particles present on the surface of the magnetic toner particles comprise strontium titanate fine particles and metal oxide fine particles, and the metal oxide fine particles containing silica fine particles, and optionally containing titania fine particles and alumina fine particles, and a content of the silica fine particles being at least 85 mass % with respect to a total mass of the silica fine particles, the titania fine particles and the alumina fine particles. In addition, the magnetic toner has a characteristic state of coverage, by the inorganic fine particles, of the magnetic toner particle surface, and the ratio [D4/D1] of the weight-average particle diameter (D4) to the number-average particle diameter (D1) is in a prescribed range.
摘要（中）：
磁性调色剂含有：含有粘结剂树脂和磁性体的磁性调色剂颗粒; 和存在于磁性调色剂颗粒表面上的无机细颗粒，其中存在于磁性调色剂颗粒表面上的无机细颗粒包括钛酸锶细颗粒和金属氧化物微粒，并且含有二氧化硅微粒的金属氧化物微粒， 并且任选地含有二氧化钛微粒和氧化铝微粒，相对于二氧化硅微粒，二氧化钛微粒和氧化铝微粒的总质量，二氧化硅微粒的含量为85质量％以上。 此外，磁性调色剂具有磁性调色剂颗粒表面的无机细颗粒的覆盖特性状态和重均粒径（D4）与数均粒子的比例[D4 / D1] 直径（D1）在规定范围内。
公开/授权文献:
- US09213251B2 Magnetic toner 公开/授权日：2015-12-15