-
1.
公开(公告)号:US20170329247A1
公开(公告)日:2017-11-16
申请号:US15522306
申请日:2015-09-29
申请人: Yoshihiro MURASAWA , Hiroshi TOHMATSU , Hitoshi IWATSUKI , Mariko TAKII , Koichi SAKATA , Hiroyuki KISHIDA , Toyoaki TANO , Kenichi MASHIKO
发明人: Yoshihiro MURASAWA , Hiroshi TOHMATSU , Hitoshi IWATSUKI , Mariko TAKII , Koichi SAKATA , Hiroyuki KISHIDA , Toyoaki TANO , Kenichi MASHIKO
CPC分类号: G03G9/1075 , G03G9/08755 , G03G9/08795 , G03G9/08797 , G03G9/0902 , G03G9/113 , G03G9/1131 , G03G9/1139
摘要: Provided is an electrostatic latent image developing white toner, including: a white toner including at least a binder resin, a white pigment, and a release agent; and a magnetic carrier including at least a core material, and a coating layer coating the core material and made of a coating resin and conductive particles, wherein Ra of the magnetic carrier is in a range of from 0.50 μm to 1.00 μm, and a bulk density of the magnetic carrier is in a range of from 2.08 g/cm3 to 2.24 g/cm3.
-
公开(公告)号:US20170248871A1
公开(公告)日:2017-08-31
申请号:US15511291
申请日:2015-08-31
申请人: Hitoshi IWATSUKI , Koichi SAKATA , Hiroshi TOHMATSU , Toyoaki TANO , Kenichi MASHIKO , Mariko TAKII , Hiroyuki KISHIDA , Yoshihiro MURASAWA , Keinosuke KONDOH , Toshio KOIKE , Yutaka TAKAHASHI
发明人: Hitoshi IWATSUKI , Koichi SAKATA , Hiroshi TOHMATSU , Toyoaki TANO , Kenichi MASHIKO , Mariko TAKII , Hiroyuki KISHIDA , Yoshihiro MURASAWA , Keinosuke KONDOH , Toshio KOIKE , Yutaka TAKAHASHI
IPC分类号: G03G15/09
CPC分类号: G03G15/0928 , G03G9/1136 , G03G9/1139 , G03G15/065 , G03G15/0907
摘要: A developing device, including: a developer containing toner and carrier; and developer bearer configured to have surface thereof bear the developer and endlessly move, and to develop latent image over surface of latent image bearer by supplying toner in developer to latent image in developing region facing the latent image bearer, wherein carrier contains fine particles, value X in volume resistivity R (=10X) (Ω·cm) of carrier is 11.5-16.0, developer bearer includes: magnetic field generating unit including a plurality of magnetic poles; and developing sleeve having a cylindrical shape enclosing magnetic field generating unit, and configured to bear developer over outer circumferential surface of cylindrical shape by magnetic force of the magnetic field generating unit and perform surface moving by rotating relative to developing device body, and developing device includes developing sleeve voltage applying unit configured to apply AC component-containing voltage to developing sleeve.
-
公开(公告)号:US20200183297A1
公开(公告)日:2020-06-11
申请号:US16305196
申请日:2017-05-26
申请人: Haruki MURATA , Hiroyuki KISHIDA , Toyoaki TANO , Kenichi MASHIKO , Masato TAIKOJI , Mariko TAKII , Yoshihiro MURASAWA
发明人: Haruki MURATA , Hiroyuki KISHIDA , Toyoaki TANO , Kenichi MASHIKO , Masato TAIKOJI , Mariko TAKII , Yoshihiro MURASAWA
摘要: A carrier for developing an electrostatic latent image includes a core material particle and a resin layer covering a surface of the core material particle. The resin layer includes a resin and at least one kind of a fine particle. At least one kind of the fine particles includes a chargeable fine particle. The chargeable fine particle has a long diameter of 400 to 900 nm. The chargeable fine particle has a shape factor SF-1 of 160 to 250.
-
公开(公告)号:US20170269497A1
公开(公告)日:2017-09-21
申请号:US15449572
申请日:2017-03-03
申请人: Yoshihiro MURASAWA , Toyoaki TANO , Hiroyuki KISHIDA , Masato TAIKOJI , Kenichi MASHIKO , Mariko TAKII , Haruki MURATA
发明人: Yoshihiro MURASAWA , Toyoaki TANO , Hiroyuki KISHIDA , Masato TAIKOJI , Kenichi MASHIKO , Mariko TAKII , Haruki MURATA
CPC分类号: G03G9/1075 , G03G9/0819 , G03G9/08755 , G03G9/091 , G03G9/0926 , G03G9/107 , G03G9/1131 , G03G9/1133 , G03G9/1136 , G03G9/1139 , G03G15/08 , G03G2215/0607
摘要: A carrier for developing electrostatic latent images is provided. The carrier includes a magnetic core particle and a resin layer coating a surface of the magnetic core particle. The resin layer includes a particulate material A having a volume average particle diameter (a) and a particulate material B having a volume average particle diameter (b). The volume average particle diameter (a) of the particulate material A is the largest among volume average particle diameters of all particulate materials included in the resin layer, and an inequation 100≧(a)/(b)≧5 is satisfied. The particulate material A is barium sulfate.
-
公开(公告)号:US20170205721A1
公开(公告)日:2017-07-20
申请号:US15397522
申请日:2017-01-03
IPC分类号: G03G9/00
CPC分类号: G03G9/0831 , G03G9/1075 , G03G9/1136 , G03G9/1137 , G03G9/1139 , G03G15/08 , G03G15/0808 , G03G2215/0607
摘要: A carrier is provided. The carrier includes a magnetic core particle and a resin layer coating a surface of the magnetic core particle. The resin layer includes a resin, a conductive particle including tungsten tin oxide, and a chargeable filler.
-
公开(公告)号:US20160363880A1
公开(公告)日:2016-12-15
申请号:US15160590
申请日:2016-05-20
申请人: Mariko TAKII , Yoshihiro MURASAWA , Takahiro NAKAMURA , Kei NIWAYAMA , Haruki MURATA , Masato TAIKOJI , Koichi SAKATA
发明人: Mariko TAKII , Yoshihiro MURASAWA , Takahiro NAKAMURA , Kei NIWAYAMA , Haruki MURATA , Masato TAIKOJI , Koichi SAKATA
IPC分类号: G03G9/00
CPC分类号: G03G9/1139 , G03G9/1075 , G03G9/1133 , G03G15/08
摘要: A carrier includes a resin layer including Al and Sn and covering the surface of the carrier. A detectable amount of Al is from 1.0% to 12.1% by atom and a ratio (Al/Sn) of the detectable amount of Al to that of Sn is from 2.0 to 50.0 when the carrier is subjected to an X-ray photoelectron spectroscopic (XPS) analysis.
摘要翻译: 载体包括包含Al和Sn的树脂层并覆盖载体的表面。 可检测量的Al为1.0〜12.1原子%,当将载体进行X射线光电子分光分析时,可检测量的Al与Sn的比例(Al / Sn)为2.0〜50.0(Al / Sn) XPS)分析。
-
公开(公告)号:US20170153563A1
公开(公告)日:2017-06-01
申请号:US15331118
申请日:2016-10-21
IPC分类号: G03G9/00
CPC分类号: G03G9/10 , G03G9/1139 , G03G15/08
摘要: A carrier includes a core and a covering layer covering the core and including at least carbon black and a filler. The maximum height Ry of the surface of the carrier is from 4.0 μm to 5.0 μm.
-
公开(公告)号:US20170185000A1
公开(公告)日:2017-06-29
申请号:US15392482
申请日:2016-12-28
申请人: Masashi NAGAYAMA , Mariko TAKll , Yoshihiro MURASAWA , Haruki MURATA , Kei NIWAYAMA , Tohru SUGANUMA , Koichi SAKATA , Saori YAMADA , Shinya NAKAGAWA , Kohsuke MIYAZAKI
发明人: Masashi NAGAYAMA , Mariko TAKll , Yoshihiro MURASAWA , Haruki MURATA , Kei NIWAYAMA , Tohru SUGANUMA , Koichi SAKATA , Saori YAMADA , Shinya NAKAGAWA , Kohsuke MIYAZAKI
IPC分类号: G03G9/00
CPC分类号: G03G9/1139 , G03G9/0821 , G03G9/1131 , G03G15/0121 , G03G15/0865 , G03G2215/0129 , G03G2215/0132
摘要: Carrier for image forming includes a core material particle including a magnetic material and a coating layer disposed on the surface of the core material particle, the coating layer including a resin, carbon black, an inorganic particulate A, and an inorganic particulate B. The carbon black has a concentration gradient along a thickness direction of the coating layer with a concentration from high to low toward a surface of the coating layer while the inorganic particulate A has a concentration gradient along a thickness direction of the coating layer with a concentration from low to high toward the surface of the coating layer. The volume ratio of the carbon black is 0-30 percent at a depth range of 0.0-0.1 μm from the surface of the coating layer. The inorganic particulate A is electroconductive with a powder specific resistance of 200 Ω·cm or less.
-
-
-
-
-
-
-