公开(公告)号：US11036152B2

公开(公告)日：2021-06-15

申请号：US16492986

申请日：2018-02-21

申请人： Shohta Kobayashi ,  Satoshi Ogawa ,  Yoshitaka Sekiguchi ,  Masayuki Ishii ,  Naoko Kitada

发明人： Shohta Kobayashi ,  Satoshi Ogawa ,  Yoshitaka Sekiguchi ,  Masayuki Ishii ,  Naoko Kitada

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/097 ,  G03G21/18

摘要： Provided is a toner including a binder resin, a release agent, and a charge-controlling agent, wherein the toner includes toner particles having particle diameters of 3 micrometers or smaller, among the toner particles having particle diameters of 3 micrometers or smaller, a proportion of the toner particles having an average circularity of 0.70 or greater but 0.85 or less in all of the toner particles is 10% by number or greater but less than 20% by number and a proportion of the toner particles having an average circularity of less than 0.70 in all of the toner particles is 10% by number or less.

公开(公告)号：US10754270B2

公开(公告)日：2020-08-25

申请号：US16492818

申请日：2018-02-15

申请人： Naoko Kitada ,  Satoshi Ogawa ,  Yoshitaka Sekiguchi ,  Masayuki Ishii ,  Shohta Kobayashi

发明人： Naoko Kitada ,  Satoshi Ogawa ,  Yoshitaka Sekiguchi ,  Masayuki Ishii ,  Shohta Kobayashi

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/087 ,  G03G21/18 ,  G03G15/08

摘要： Provided is a toner including a binder resin, and a charge-controlling agent, wherein a volume average particle diameter X of the toner after a stress treatment satisfies Formula (1), and an amount Y of fine toner particles having particle diameters of 3 micrometers or smaller and circularity of 0.70 or less satisfies Formula (2).

公开(公告)号：US10025213B2

公开(公告)日：2018-07-17

申请号：US15557362

申请日：2016-02-29

申请人： Masahiro Seki ,  Yoshitaka Sekiguchi ,  Satoshi Ogawa ,  Naoko Kitada

发明人： Masahiro Seki ,  Yoshitaka Sekiguchi ,  Satoshi Ogawa ,  Naoko Kitada

IPC分类号： G03G9/087 ,  G03G9/09

摘要： A toner including a binder resin, wherein the toner includes a tetrahydrofuran (THF)-insoluble component in a range of from 10% by mass through 40% by mass, wherein the toner has a main peak in a range of from 12,000 through 18,000 in a molecular weight distribution of a THF-soluble component as measured by gel permeation chromatography (GPC), wherein the main peak has a half value width in a range of from 20,000 to 50,000, and wherein the toner includes a component having a molecular weight of 2,000 or less in a range of from 10.0% by mass through 20.0% by mass and a component having a molecular weight of 100,000 or more of 8.0% by mass or less.