基本信息:
- 专利标题: MAGNETIC TONER
- 专利标题(中):磁性墨粉
- 申请号:PCT/JP2012/084287 申请日:2012-12-26
- 公开(公告)号:WO2013100183A1 公开(公告)日:2013-07-04
- 发明人: HASEGAWA, Yusuke , DOJO, Tadashi , MAGOME, Michihisa
- 申请人: CANON KABUSHIKI KAISHA
- 申请人地址: 30-2, Shimomaruko 3-chome, Ohta-ku, Tokyo 1468501 JP
- 专利权人: CANON KABUSHIKI KAISHA
- 当前专利权人: CANON KABUSHIKI KAISHA
- 当前专利权人地址: 30-2, Shimomaruko 3-chome, Ohta-ku, Tokyo 1468501 JP
- 代理机构: SERA, Kazunobu et al.
- 优先权: JP2011-286201 20111227
- 主分类号: G03G9/08
- IPC分类号: G03G9/08 ; G03G9/083 ; G03G9/087
摘要:
A 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 contain metal oxide fine particles, 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, when a coverage ratio A(%) is a coverage ratio of the magnetic toner particles' surface by the inorganic fine particles and a coverage ratio B(%) is a coverage ratio of the magnetic toner particles' surface by the inorganic fine particles that are fixed to the magnetic toner particles' surface, the magnetic toner has a coverage ratio A and a coverage ratio B/coverage ratio A in prescribed ranges, wherein the magnetic toner has a dielectric constant ε' and a dielectric loss tangent in prescribed ranges.
摘要(中):
磁性调色剂含有含有粘合剂树脂和磁性体的磁性调色剂颗粒和磁性调色剂颗粒表面上存在的无机细颗粒,其中磁性调色剂颗粒表面上存在的无机细颗粒含有金属氧化物微粒, 含有二氧化硅微粒的金属氧化物微粒,任选地含有二氧化钛微粒和氧化铝微粒,二氧化硅微粒的含量相对于二氧化硅微粒的总质量为85质量%以上,二氧化钛微细 颗粒和氧化铝细颗粒,当覆盖率A(%)是无机细颗粒的磁性调色剂颗粒的表面的覆盖率和覆盖率B(%)时,磁性调色剂颗粒表面的覆盖率 通过固定在磁性调色剂颗粒表面上的无机细颗粒,磁性调色剂具有覆盖率A和覆盖率B / c 在规定范围内的超载比A,其中磁性调色剂具有规定范围内的介电常数ε和介电损耗角正切。
IPC结构图谱:
G | 物理 |
--G03 | 摄影术;电影术;利用了光波以外其他波的类似技术;电记录术;全息摄影术 |
----G03G | 电记录术;电照相;磁记录 |
------G03G9/00 | 显影剂 |
--------G03G9/08 | .带有调色剂颗粒的 |