-
公开(公告)号：US20230099642A1
公开(公告)日：2023-03-30
申请号：US17584488
申请日：2022-01-26
发明人： Moegi Iguchi , Sakon Takahashi , Yosuke Tsurumi , Yasuaki Hashimoto , Ryo Otake
摘要： A toner for developing an electrostatic charge image contains toner particles having an average circularity Cc of 0.98 or more; and external additives including monodisperse silica particles having an average diameter of primary particles of 20 nm or more and 70 nm or less and titanate particles having an average diameter of primary particles of 20 nm or more and 70 nm or less, wherein the absolute difference between the average diameter of primary particles of the monodisperse silica particles and the average diameter of primary particles of the titanate particles is 25 nm or less.
-
公开(公告)号：US11550235B2
公开(公告)日：2023-01-10
申请号：US16943389
申请日：2020-07-30
摘要： An electrostatic image developing toner includes toner particles, an external additive A, and an external additive B. At least the external additive A is deposited on the surfaces of the toner particles. At least the external additive B is deposited on the external additive A. The external additive B includes an aggregate of two or more particles. The coverage of the toner particles with the external additive B is 3% by area or more with respect to the total surface area of the toner particles.
-
3.发明公开公开(公告)号：US20240319625A1
公开(公告)日：2024-09-26
申请号：US18456107
申请日：2023-08-25
发明人： Yosuke TSURUMI , Yasuo Kadokura , Moegi Iguchi
IPC分类号： G03G9/087
CPC分类号： G03G9/08797 , G03G9/08755 , G03G9/08795
摘要： An electrostatic charge image developer contains a toner including toner particles that contain a binder resin, and an external additive, and a carrier having a true specific gravity of 3.0 g/cm3 or more and 4.0 g/cm3 or less, in which, in a dynamic viscoelasticity measurement of the toner, in a case where a loss tangent tan δ at a temperature of 90° C. and a strain of 1% is represented by D1 (90), a loss tangent tan δ at a temperature of 90° C. and a strain of 50% is represented by D50 (90), a loss tangent tan δ at a temperature of 150° C. and a strain of 1% is represented by D1 (150), and a loss tangent tan δ at a temperature of 150° C. and a strain of 50% is represented by D50 (150), each of D1 (90), D50 (90), D1 (150), and D50 (150) is 0.5 or more and 2.5 or less, a value of D50 (150)−D1 (150) is less than 1.5, and a value of D50 (90)−D1 (90) is less than 1.0.
-
公开(公告)号：US11531284B2
公开(公告)日：2022-12-20
申请号：US16940814
申请日：2020-07-28
摘要： An electrostatic image developing toner includes toner particles including a binder resin and a release agent, an external additive A, and an external additive B. At least the external additive A is present on the surface of the toner particles. At least the external additive B is present on the external additive A. The external additive B is an aggregate of two or more particles. The toner particles have an average circularity of 0.8 or more and 0.94 or less. The amount of the release agent present at the surface of the toner particles is 5 area % or more and 30 area % or less based on the total surface area of the toner particles.
-
5.发明授权公开(公告)号：US11181841B2
公开(公告)日：2021-11-23
申请号：US16841685
申请日：2020-04-07
发明人： Moegi Iguchi , Yasuko Torii , Sakon Takahashi
摘要： A toner for electrostatic image development includes: toner particles; Si-doped strontium titanate particles; and silica particles. The particle diameter D of at least one peak in a number-based particle size distribution of primary particles of the silica particles is larger than the number-based median diameter D50 of primary particles of the Si-doped strontium titanate particles.
-
-
-
-
搜索结果
5 条记录 (耗时 0.018 秒)
