-
1.发明授权公开(公告)号：US10234783B2
公开(公告)日：2019-03-19
申请号：US15568947
申请日：2016-04-28
申请人： Koichi Sakata , Tohru Suganuma , Shohichi Sugimoto , Hiroshi Tohmatsu , Hiroyuki Kishida , Kenichi Mashiko , Toyoaki Tano
发明人： Koichi Sakata , Tohru Suganuma , Shohichi Sugimoto , Hiroshi Tohmatsu , Hiroyuki Kishida , Kenichi Mashiko , Toyoaki Tano
IPC分类号： G03G9/113
摘要： A carrier including a resin layer including at least one kind of particles, wherein the at least one kind of the particles are particles of barium sulfate, wherein an amount of Ba detected is 0.3 atomic % or greater in a Ba analysis through X-ray photoelectron spectroscopy (XPS) of the carrier, and wherein circle-equivalent diameters of the particles of the barium sulfate are 400 nm or greater but 900 nm or smaller.
-
公开(公告)号：US10444651B2
公开(公告)日：2019-10-15
申请号：US15911443
申请日：2018-03-05
申请人： Mariko Takii , Koichi Sakata , Tohru Suganuma , Masahiro Seki , Masashi Nagayama , Toyoaki Tano , Kohsuke Miyazaki
发明人： Mariko Takii , Koichi Sakata , Tohru Suganuma , Masahiro Seki , Masashi Nagayama , Toyoaki Tano , Kohsuke Miyazaki
摘要： A carrier is provided including a core particle and a resin layer coating the surface of the core particle. The resin layer includes fine metal particles, and a detected metal element amount A obtained by X-ray photoelectron spectrometry of the surface of the carrier is in a range of 4.0 atomic %≤A≤20.0 atomic % and an average major-axis length B of the fine metal particle exposing from the resin layer is in a range of 100 nm≤B≤800 nm.
-
公开(公告)号：US20230195004A1
公开(公告)日：2023-06-22
申请号：US18052977
申请日：2022-11-07
申请人： Minoru Masuda , Tohru Suganuma , Masashi Nagayama , Hiroyuki Kishida , Kento Takeuchi , Kaede Masuko , Tomomi Suzuki , Takuya Suganuma , Kazuki Yogosawa
发明人： Minoru Masuda , Tohru Suganuma , Masashi Nagayama , Hiroyuki Kishida , Kento Takeuchi , Kaede Masuko , Tomomi Suzuki , Takuya Suganuma , Kazuki Yogosawa
CPC分类号： G03G9/0834 , G03G21/0047 , G03G21/1676
摘要： A developing apparatus includes an electrostatic latent image bearer, a developing sleeve, a case, and an air filter. The case accommodates a two-component developer and the developing sleeve. The air filter is attached to the case. The air filter has a thickness of 2 to 20 mm and has a density gradient with a pressure loss of 2 to 40 Pa at a wind speed of 10 cm/s. The air filter forms an airflow sucked into the case from a gap between the developing sleeve and the case and forms an airflow discharged from the case through the air filter. The two-component developer accommodated in the case contains a magnetic particle a surface of which is coated with a resin layer. The resin layer contains at least one type of chargeable particle.
-
公开(公告)号：US20220187729A1
公开(公告)日：2022-06-16
申请号：US17457693
申请日：2021-12-06
申请人： Masashi Nagayama , Kousuke Suzuki , Hiroyuki Kishida , Tohru Suganuma , Minoru Masuda , Kento Takeuchi , Kaede Masuko
发明人： Masashi Nagayama , Kousuke Suzuki , Hiroyuki Kishida , Tohru Suganuma , Minoru Masuda , Kento Takeuchi , Kaede Masuko
摘要： A carrier for forming an electrophotographic image is provided. The carrier comprises a core particle and a coating layer coating the core particle. The coating layer contains chargeable particles and a dispersant. The carrier has an apparent density of from 2.0 g/cm3 or greater but less than 2.5 g/cm3.
-
公开(公告)号：US11934145B2
公开(公告)日：2024-03-19
申请号：US18052977
申请日：2022-11-07
申请人： Minoru Masuda , Tohru Suganuma , Masashi Nagayama , Hiroyuki Kishida , Kento Takeuchi , Kaede Masuko , Tomomi Suzuki , Takuya Suganuma , Kazuki Yogosawa
发明人： Minoru Masuda , Tohru Suganuma , Masashi Nagayama , Hiroyuki Kishida , Kento Takeuchi , Kaede Masuko , Tomomi Suzuki , Takuya Suganuma , Kazuki Yogosawa
CPC分类号： G03G9/0834 , G03G21/0047 , G03G21/1676
摘要： A developing apparatus includes an electrostatic latent image bearer, a developing sleeve, a case, and an air filter. The case accommodates a two-component developer and the developing sleeve. The air filter is attached to the case. The air filter has a thickness of 2 to 20 mm and has a density gradient with a pressure loss of 2 to 40 Pa at a wind speed of 10 cm/s. The air filter forms an airflow sucked into the case from a gap between the developing sleeve and the case and forms an airflow discharged from the case through the air filter. The two-component developer accommodated in the case contains a magnetic particle a surface of which is coated with a resin layer. The resin layer contains at least one type of chargeable particle.
-
公开(公告)号：US20220291603A1
公开(公告)日：2022-09-15
申请号：US17649802
申请日：2022-02-03
申请人： Hiroyuki KISHIDA , Kousuke Suzuki , Tohru Suganuma , Minoru Masuda , Masashi Nagayama , Kento Takeuchi , Kaede Masuko
发明人： Hiroyuki KISHIDA , Kousuke Suzuki , Tohru Suganuma , Minoru Masuda , Masashi Nagayama , Kento Takeuchi , Kaede Masuko
摘要： A carrier for developing an electrostatic latent image is provided. The carrier comprises a core particle having an internal void ratio of from 0.0% to 2.0% and a coating layer coating the core particle. The coating layer contains flat chargeable particles satisfying Formula 1 blow: 1.0≤R1/R2≤3.0 Formula 1 where R1 [nm] and R2 [nm] represent a major axis and a thickness, respectively, of each of the flat chargeable particles. The carrier has an apparent density of from 2.0 to 2.5 g/cm3.
-
公开(公告)号：US20230205108A1
公开(公告)日：2023-06-29
申请号：US18065904
申请日：2022-12-14
申请人： Kaede MASUKO , Tohru Suganuma , Minoru Masuda , Masashi Nagayama , Hiroyuki Kishida , Tomomi Suzuki , Kento Takeuchi
发明人： Kaede MASUKO , Tohru Suganuma , Minoru Masuda , Masashi Nagayama , Hiroyuki Kishida , Tomomi Suzuki , Kento Takeuchi
CPC分类号： G03G9/1139 , G03G9/108 , G03G9/1136 , G03G13/08 , G03G15/0875
摘要： A carrier is provided that includes a core particle and a coating layer coating the core particle. The coating layer includes a resin and chargeable inorganic fine particles, and has voids. The resin has an average film thickness of 0.10 μm or larger and smaller than 0.45 μm. The coating layer has a porosity of 0.1% or higher and lower than 2.8%, when the porosity expressed by the following equation:
Porosity [%]=S1/S2×100
where, on a cross section of the coating layer, S1 represents a cross sectional area of the voids and S2 represents a cross sectional area of the resin.-
公开(公告)号：US20220291604A1
公开(公告)日：2022-09-15
申请号：US17652570
申请日：2022-02-25
申请人： Namie Suzuki , Kousuke Suzuki , Tohru Suganuma , Masashi Nagayama , Minoru Masuda , Hiroyuki Kishida , Kento Takeuchi , Kaede Masuko
发明人： Namie Suzuki , Kousuke Suzuki , Tohru Suganuma , Masashi Nagayama , Minoru Masuda , Hiroyuki Kishida , Kento Takeuchi , Kaede Masuko
摘要： A carrier for forming an electrophotographic image is provided. The carrier comprises a core particle and a coating layer coating the core particle. The coating layer contains a conductive component comprising an element A, and a coating resin comprising an element B. The element A is undetected in the coating resin by an energy dispersive X-ray spectrometer, and the element B is undetected in the conductive component by the energy dispersive X-ray spectrometer. A standard deviation of a value A/B is 0.4 or less, where the value A/B is a ratio of the element A to the element B in intensity measured by the energy dispersive X-ray spectrometer.
-
公开(公告)号：US10474051B2
公开(公告)日：2019-11-12
申请号：US16131566
申请日：2018-09-14
申请人： Mariko Takii , Koichi Sakata , Tohru Suganuma , Masahiro Seki , Masashi Nagayama , Shinya Nakagawa , Kei Niwayama
发明人： Mariko Takii , Koichi Sakata , Tohru Suganuma , Masahiro Seki , Masashi Nagayama , Shinya Nakagawa , Kei Niwayama
摘要： Provided is a carrier for a developer of an electrostatic latent image, the carrier including a core particle, and a resin layer covering the core particle, where the resin layer includes metal compound particles, wherein the metal compound particles include magnesium compound particles or barium compound particles, and an exposed amount B (atomic %) of the magnesium or the barium on a surface of the carrier particle satisfies a relationship below: 10.0≥B ≥1.2.
-
公开(公告)号：US10025214B2
公开(公告)日：2018-07-17
申请号：US15392482
申请日：2016-12-28
申请人： Masashi Nagayama , Mariko Takii , Yoshihiro Murasawa , Haruki Murata , Kei Niwayama , Tohru Suganuma , Koichi Sakata , Saori Yamada , Shinya Nakagawa , Kohsuke Miyazaki
发明人： Masashi Nagayama , Mariko Takii , Yoshihiro Murasawa , Haruki Murata , Kei Niwayama , Tohru Suganuma , Koichi Sakata , Saori Yamada , Shinya Nakagawa , Kohsuke Miyazaki
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.
-
-
-
-
-
-
-
-
-
搜索结果
21 条记录 (耗时 0.195 秒)
