-
公开(公告)号：US20240019792A1
公开(公告)日：2024-01-18
申请号：US18350309
申请日：2023-07-11
发明人： NAOYA ISONO , KENJI OOKUBO , MASAYA KOMURO
CPC分类号： G03G9/0825 , G03G9/08711 , G03G9/08791
摘要： A toner comprising a toner particle comprising: a toner base particle comprising a binder resin; and an organosilicon polymer at a surface of the toner base particle, wherein protruded portions constituted from the organosilicon polymer are present at the surface of the toner base particle, when a protruded portion having a height of 30 to 200 nm among the protruded portions is defined as a protrusion x, and the protrusion x is observed in a specific condition using a scanning electron microscope, an average aspect ratio of the protrusion x is 1.3 or more, and when shape measurements of a specific region of the surface of the toner particle are carried out using an atomic force microscope and measured data obtained by observing the protruded portions at the surface of the toner particle is subjected to surface roughness analysis, an average angle of inclination Δa is 1.0 to 2.0°.
-
公开(公告)号：US20230400789A1
公开(公告)日：2023-12-14
申请号：US18327506
申请日：2023-06-01
发明人： MASAYA KOMURO , MASAO SUZUKI , KENJI OOKUBO , NAOYA ISONO
CPC分类号： G03G9/091 , C08G63/20 , G03G9/08755
摘要： A toner comprising a toner particle comprising a binder resin, wherein the toner particle comprises a compound represented by a following structural formula (1) and a compound represented by a following structural formula (2), and a content of the compound represented by the following structural formula (2) comprised in the toner is 0.3 mass ppm or more,
-
公开(公告)号：US20240027929A1
公开(公告)日：2024-01-25
申请号：US18350260
申请日：2023-07-11
发明人： KENJI OOKUBO , NAOYA ISONO , MASAYA KOMURO
CPC分类号： G03G9/0825 , G03G9/09364 , G03G9/09328 , G03G9/08724 , G03G9/08773 , G03G9/0815 , G03G9/0819
摘要： A toner comprising a toner particle comprising: a toner base particle; and an organosilicon polymer at a surface of the toner base particle, wherein protruded portions constituted from the organosilicon polymer are present at the surface of the toner base particle, when a specific reciprocating shaking test is carried out, the toner particle is measured in terms of a total area S of a surface of the toner particle and an area Sc of regions of the surface of the toner base particle coated with the organosilicon polymer at the surface of the toner particle before and after the test, values of Sc/S for the toner particle before and after the test are respectively defined as R0 and R1, the value of R0 is 0.30 to 0.70, a value of (R0−R1)/R0 is 0.20 or less, and a storage elastic modulus at 100° C. of the toner is 8000 to 50,000 Pa.
-
公开(公告)号：US20230384705A1
公开(公告)日：2023-11-30
申请号：US18324840
申请日：2023-05-26
发明人： KENJI OOKUBO , Keisuke Adachi , SHINTARO NOJI
CPC分类号： G03G9/09775 , G03G9/09733 , C08L83/04 , C08L2207/53
摘要： A core-shell particle includes a core, and a shell on a surface of the core. The core includes a crystalline release agent. A value of a sum of a number-average value of Feret diameter of the core-shell particle and a standard deviation of the Feret diameter of the core-shell particle is 20 to 500 nm. The shell comprises an organosilicon polymer. In a differential scanning calorimetric measurement of the core-shell particle, a maximum endothermic peak is present when a temperature is raised from 30° C. to 120° C. at 10.0° C./min, a maximum exothermic peak is present when the temperature is lowered from 120° C. to 30° C. at 10.0° C./min, and Tc (° C.) is at least 5° C. lower than Tm (° C.) where Tm is a peak temperature of the maximum endothermic peak and Tc is a peak temperature of the maximum exothermic peak.
-
公开(公告)号：US20230384702A1
公开(公告)日：2023-11-30
申请号：US18321312
申请日：2023-05-22
发明人： KEISUKE ADACHI , SHINTARO NOJI , KENJI OOKUBO
CPC分类号： G03G9/09328 , G03G9/09733 , G03G9/0821
摘要： A toner comprising a toner particle comprising a toner core particle and a shell covering the toner core particle, wherein the shell comprises an organosilicon polymer, the shell encapsulates a domain of a release agent, and in cross-sectional observation of the toner particle by a transmission electron microscope, a ratio of domains of the release agent that are not in contact with the toner core particle to a total number of the observed domains of the release agent is 85% by number or more.
-
-
-
-
搜索结果
5 条记录 (耗时 0.015 秒)
