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公开(公告)号：US20220091529A1
公开(公告)日：2022-03-24
申请号：US17149005
申请日：2021-01-14
Applicant: FUJI XEROX CO., LTD.
Inventor： Shintaro ANNO , Yoshimasa FUJIHARA , Atsushi SUGAWARA , Daisuke NOGUCHI , Satoshi MIURA
Abstract: A toner for developing an electrostatic charge image contains toner particles containing at least one binder resin; the Mg element in an amount such that the net intensity of x-ray fluorescence from the Mg element in the toner is 0.10 kcps or more and 1.20 kcps or less; and external additives including particles of at least one compound represented by formula (1) and particles of a metal salt of a fatty acid, MTiO3 (1) where M represents at least one selected from the group consisting of Ca, Sr, and Ba.
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2.发明申请公开(公告)号：US20220091521A1
公开(公告)日：2022-03-24
申请号：US17152016
申请日：2021-01-19
Applicant: FUJI XEROX CO., LTD.
Inventor： Atsushi SUGAWARA , Shintaro ANNO , Yoshimasa FUJIHARA , Daisuke NOGUCHI , Satoshi MIURA
Abstract: A toner for electrostatic image development includes toner particles containing an amorphous resin and a crystalline resin. The toner particles include first toner particles. When a cross section of each of the first toner particles is observed, at least two domains of the crystalline resin satisfy conditions (A), (B1), (C), and (D) below: condition (A): an aspect ratio of each of the at least two domains of the crystalline resin is from 5 to 40 inclusive; condition (B1): a length of a major axis of each of the at least two domains of the crystalline resin is from 0.5 μm to 1.5 μm inclusive; condition (C): an angle between an extension of the major axis of each of the at least two domains of the crystalline resin and a tangent at the point of contact of the extension with a surface of the each of the first toner particles is from 60 degrees to 90 degrees inclusive; and condition (D): a crossing angle between extensions of major axes of any two of the at least two domains of the crystalline resin is from 45 degrees to 90 degrees inclusive.
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公开(公告)号：US20210294227A1
公开(公告)日：2021-09-23
申请号：US16943389
申请日：2020-07-30
Applicant: FUJI XEROX Co., Ltd.
Inventor： Atsushi SUGAWARA , Yosuke TSURUMI , Yasuko TORII , Yoshimasa FUJIHARA , Moegi IGUCHI
Abstract: 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.
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公开(公告)号：US20190196351A1
公开(公告)日：2019-06-27
申请号：US16109786
申请日：2018-08-23
Applicant: FUJI XEROX CO., LTD.
Inventor： Daisuke NOGUCHI , Yoshimasa FUJIHARA , Kazutsuna SASAKI
Abstract: A white toner for electrostatic latent image development includes toner particles containing a binder resin, a white pigment, and a release agent, the binder resin containing an amorphous resin. In viscosity measurement using a capillary viscometer, a temperature-viscosity curve has a minimum value within a temperature range of 70° C. or more and 95° C. or less.
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5.发明申请公开(公告)号：US20220091528A1
公开(公告)日：2022-03-24
申请号：US17157238
申请日：2021-01-25
Applicant: FUJI XEROX CO., LTD.
Inventor： Yoshimasa FUJIHARA , Atsushi SUGAWARA , Shintaro ANNO , Daisuke NOGUCHI , Satoshi MIURA
Abstract: A toner for electrostatic image development contains toner particles containing a binder resin. The binder resin includes an amorphous resin and a crystalline resin. In the toner particles, a Net intensity of elemental Mg measured by X-ray fluorescence analysis is from 0.40 to 1.20 inclusive, and a Net intensity of elemental Cl measured by X-ray fluorescence analysis is from 0.02 to 0.60 inclusive.
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Patent Agency Ranking
公开(公告)号：US20220091527A1
公开(公告)日：2022-03-24
申请号：US17148881
申请日：2021-01-14
Applicant: FUJI XEROX CO., LTD.
Inventor： Daisuke NOGUCHI , Atsushi SUGAWARA , Yoshimasa FUJIHARA , Shintaro ANNO , Satoshi MIURA
Abstract: An electrostatic image developing toner includes an amorphous polyester resin and a crystalline polyester resin, wherein a Net intensity NNa of a Na element and a Net intensity NCl of a Cl element, the Net intensities NNa and NCl being determined by X-ray fluorescence analysis, satisfy 2.5≤NCl/NNa≤260.0.
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公开(公告)号：US20210302855A1
公开(公告)日：2021-09-30
申请号：US16984741
申请日：2020-08-04
Applicant: FUJI XEROX Co., Ltd.
Inventor： Yasuko TORII , Yosuke TSURUMI , Atsushi SUGAWARA , Yoshimasa FUJIHARA , Moegi IGUCHI
Abstract: An electrostatic image developing toner includes a toner particle, 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 number of peaks of the external additive B on the external additive A is 5 or more and 100 or less per 30 μm peripheral length of the toner particle, the peaks having a height from the surface of the toner particle of 80 nm or more and 250 nm or less.
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8.发明申请公开(公告)号：US20220091523A1
公开(公告)日：2022-03-24
申请号：US17154669
申请日：2021-01-21
Applicant: FUJI XEROX Co., Ltd.
Inventor： Yoshimasa FUJIHARA , Atsushi Sugawara , Shintaro Anno , Daisuke Noguchi , Satoshi Miura
Abstract: A toner for electrostatic image development contains toner particles containing a binder resin. The binder resin includes an amorphous resin and a crystalline resin. In the toner particles, a Net intensity of elemental Mg measured by X-ray fluorescence analysis is from 0.02 to 0.15 inclusive, and a Net intensity of elemental Cl measured by X-ray fluorescence analysis is from 0.02 to 0.60 inclusive.
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公开(公告)号：US20200301300A1
公开(公告)日：2020-09-24
申请号：US16727158
申请日：2019-12-26
Applicant: FUJI XEROX CO., LTD.
Inventor： Satoshi MIURA , Yoshimasa FUJIHARA , Shintaro ANNO , Daisuke NOGUCHI , Takuro WATANABE
Abstract: An electrostatic charge image developing toner includes: toner particles including an amorphous resin and a crystalline polyester resin including a polycondensate of a linear dicarboxylic acid and a linear dialcohol having 2 to 12 carbon atoms; and an external additive including silica particles having a BET specific surface area of 100 m2/g or more. The electrostatic charge image developing toner satisfies the expression: 0.05≤ΔH2/ΔH1≤0.95, wherein ΔH1 (mW/g) is an endothermic energy amount based on an endothermic peak derived from the crystalline polyester resin in a first temperature increase process in differential scanning calorimetry according to ASTM D3418-8 (2008), and ΔH2 (mW/g) is an endothermic energy amount based on an endothermic peak derived from the crystalline polyester resin in a second temperature increase process in differential scanning calorimetry according to ASTM D3418-8 (2008).
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公开(公告)号：US20220091526A1
公开(公告)日：2022-03-24
申请号：US17146922
申请日：2021-01-12
Applicant: FUJI XEROX CO., LTD.
Inventor： Shintaro ANNO , Atsushi SUGAWARA , Yoshimasa FUJIHARA , Daisuke NOGUCHI , Satoshi MIURA
Abstract: A toner for developing an electrostatic charge image contains toner particles containing at least one binder resin; the Mg element in an amount such that in an x-ray fluorescence analysis of the toner, the net intensity of the peak for the Mg element is 0.10 kcps or more and 1.20 kcps or less; and at least one external additive including particles of at least one compound represented by formula (1), MTiO3 (1) where M represents at least one selected from the group consisting of Ca, Sr, and Ba.
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