公开(公告)号：US20220057725A1

公开(公告)日：2022-02-24

申请号：US17403409

申请日：2021-08-16

申请人： Daisuke INOUE ,  Mitsuaki Hirose ,  Yohichi Kitagawa ,  Masayuki Ukigaya ,  Kenji Komito ,  Hiroshi Yamada

发明人： Daisuke INOUE ,  Mitsuaki Hirose ,  Yohichi Kitagawa ,  Masayuki Ukigaya ,  Kenji Komito ,  Hiroshi Yamada

IPC分类号： G03G9/08 ,  G03G9/093 ,  G03G9/087 ,  G03G9/09 ,  G03G15/08 ,  G03G21/18

摘要： A toner is provided. The toner comprises toner base particles, resin particles adhered to surfaces of the toner base particles, and an external additive adhered to the surfaces of the toner base particles. The toner base particles each comprising a binder resin, a colorant, and a wax. The toner has a storage elastic modulus G′ of 4.0×105 or less at 70° C. An embedment degree of the external additive is from 15% to 40%, as the embedment degree is measured by stirring 10 g of the toner and 20 g of a carrier in a 50-mL vial at 67 Hz for 60 minutes using a rocking mill.

公开(公告)号：US20220155699A1

公开(公告)日：2022-05-19

申请号：US17501076

申请日：2021-10-14

申请人： Yohichi KITAGAWA ,  Kenji Komito ,  Masayuki Ukigaya ,  Mitsuaki Hirose ,  Daisuke Inoue

发明人： Yohichi KITAGAWA ,  Kenji Komito ,  Masayuki Ukigaya ,  Mitsuaki Hirose ,  Daisuke Inoue

IPC分类号： G03G9/087 ,  G03G9/08

摘要： A toner is provided. The toner comprises toner particles each comprising a toner base particle and an external additive. The toner base particle comprises a binder resin and a colorant. The toner satisfies the following conditions (a) and (b): (a) an average surface roughness Ra [nm] of the toner particles, detected by a scanning probe microscope analyzer, satisfies the following formula (1): 10

公开(公告)号：US11036154B2

公开(公告)日：2021-06-15

申请号：US16199321

申请日：2018-11-26

申请人： Masayuki Ukigaya ,  Junichi Awamura ,  Hiroshi Yamada ,  Kohsuke Nagata ,  Hiroyuki Takeda

发明人： Masayuki Ukigaya ,  Junichi Awamura ,  Hiroshi Yamada ,  Kohsuke Nagata ,  Hiroyuki Takeda

IPC分类号： G03G9/087 ,  G03G15/08

摘要： A toner is provided. The toner comprises a colorant, a release agent, and a binder resin. The binder resin comprises a crystalline polyester resin and an amorphous polyester resin. The amorphous polyester resin comprises an amorphous polyester resin A and an amorphous polyester resin B. The amorphous polyester resin A comprises an isocyanurate backbone and at least one of urethane bond and urea bond. The amorphous polyester resin B comprises a trimellitic acid backbone and at least one of urethane bond and urea bond.

公开(公告)号：US20190171122A1

公开(公告)日：2019-06-06

申请号：US16199321

申请日：2018-11-26

申请人： Masayuki UKIGAYA ,  Junichi AWAMURA ,  Hiroshi YAMADA ,  Kohsuke NAGATA ,  Hiroyuki TAKEDA

发明人： Masayuki UKIGAYA ,  Junichi AWAMURA ,  Hiroshi YAMADA ,  Kohsuke NAGATA ,  Hiroyuki TAKEDA

IPC分类号： G03G9/087 ,  G03G15/08

摘要： A toner is provided. The toner comprises a colorant, a release agent, and a binder resin. The binder resin comprises a crystalline polyester resin and an amorphous polyester resin. The amorphous polyester resin comprises an amorphous polyester resin A and an amorphous polyester resin B. The amorphous polyester resin A comprises an isocyanurate backbone and at least one of urethane bond and urea bond. The amorphous polyester resin B comprises a trimellitic acid backbone and at least one of urethane bond and urea bond.