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公开(公告)号：US20200174388A1
公开(公告)日：2020-06-04
申请号：US16658912
申请日：2019-10-21
Applicant: Konica Minolta, Inc.
Inventor： Koji SHIBATA , Shinya OBARA , Junya UEDA , Takuya TAKAHASHI
Abstract: It is a two-component developer for electrostatic charge image development, which contains toner containing at least a binder resin and an external additive on a surface and a carrier containing a resin layer at least on a surface of a core material. The binder resin contains a crystalline polyester resin, the external additive contains alumina particles, and the resin layer contains a silicone resin.
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公开(公告)号：US20170242358A1
公开(公告)日：2017-08-24
申请号：US15272670
申请日：2016-09-22
Applicant: Konica Minolta, Inc.
Inventor： Takaki KAWAMURA , Kenshi MIYAJIMA , Junya UEDA
CPC classification number: G03G9/0821 , G03G9/0825 , G03G9/08711 , G03G9/08755 , G03G9/08797 , G03G9/093 , G03G9/09364 , G03G9/09371
Abstract: The toner of the present invention is an electrostatic latent image developing toner, and has a toner base particle. The toner base particle contains a binder resin including a crystalline resin, and a release agent. The toner has the maximum value G′MAX at a temperature equal to or lower than Tm, among specific storage elastic modulus ratios, of 2.2 or more. The Tm represents a peak top temperature (° C.) of a specific endothermic peak in DSC of the toner.
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公开(公告)号：US20160054669A1
公开(公告)日：2016-02-25
申请号：US14807266
申请日：2015-07-23
Applicant: Konica Minolta, Inc.
Inventor： Anju HORI , Junya ONISHI , Yasuko UCHINO , Ikuko SAKURADA , Natsuko FUJISAKI , Junya UEDA , Takaki KAWAMURA
CPC classification number: G03G9/0827 , G03G9/0819 , G03G13/01 , G03G13/013 , G03G13/016 , G03G15/01 , G03G15/0168 , G03G15/0173
Abstract: The invention provides an image formation method, a toner set, and a white toner, by which a masking function of an image layer formed by a white toner on a recording medium can be developed efficiently, and low temperature fixability can be improved. An image formation method for fixing an image forming layer (A) to be formed using a white toner, and an image forming layer (B) to be formed adjacent to the image forming layer (A) using a toner different from the white toner on a recording medium; wherein the following relational expressions (1) and (2) are satisfied: 1.000
Abstract translation: 本发明提供了一种图像形成方法，调色剂组合和白色调色剂，可以有效地开发由记录介质上的白色调色剂形成的图像层的掩蔽功能，并且可以提高低温定影性。 用于使用白色调色剂形成的图像形成层（A）和与图像形成层（A）相邻形成的图像形成层（B）的图像形成方法使用不同于白色调色剂的调色剂 记录介质; 其中满足以下关系式（1）和（2）：1.000
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4.发明申请公开(公告)号：US20220397838A1
公开(公告)日：2022-12-15
申请号：US17659230
申请日：2022-04-14
Applicant: Konica Minolta, Inc.
Inventor： Junya UEDA , Yohei MARUYAMA , Shinya OBARA
Abstract: Provided is an electrostatic latent image developing toner including: toner base particles containing a binder resin and a white pigment; and an external additive, wherein silica particles are contained as the external additive, and the following relational expression (1) is satisfied, Relational expression (1): 0.70≤Wh_Si(B)/Wh_Si(A)≤0.95, in the above relational expression (1), Wh_Si (A) represents an NET intensity of a Si element contained in the white electrostatic latent image developing toner measured by wavelength dispersive X-ray fluorescence spectrometer, and Wh_Si (B) represents an NET intensity of a Si element contained in the white electrostatic latent image developing toner that has been ultrasonically dispersed in water.
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公开(公告)号：US20190354032A1
公开(公告)日：2019-11-21
申请号：US16404179
申请日：2019-05-06
Applicant: Konica Minolta, Inc.
Inventor： Shinya OBARA , Koji SHIBATA , Junya UEDA , Takuya TAKAHASHI , Satoshi UCHINO
Abstract: To provide a two-component developer for electrostatic charge image development, the two-component developer enabling a high image quality to be kept and enabling the occurrence of fogging to be suppressed even in continuous printing of an image high in coverage rate. The two-component developer for electrostatic charge image development includes a toner particle including a toner base particle and an external additive disposed on the surface of the toner base particle, and a carrier particle including a core material particle and a covering section disposed on the surface of the core material particle, wherein the external additive includes an alumina particle, and the percentage of exposed area of the core material particle is 4.0% or more and 15.0% or less.
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Patent Agency Ranking
公开(公告)号：US20250093800A1
公开(公告)日：2025-03-20
申请号：US18825649
申请日：2024-09-05
Applicant: Konica Minolta, Inc.
Inventor： Ami MOTOHASHI , Junya UEDA
IPC: G03G15/20
Abstract: Provided is an image forming method including: forming, on a recording medium, a toner image including a white toner image and a color toner image disposed on the white toner image; and fixing the toner image onto the recording medium. In the fixing, the recording medium on which the toner image is formed is nipped between an annular belt, which includes an inner periphery that is at least partially supported by a heating member, and a facing member facing the heating member via the annular belt, and the toner image is fixed on the recording medium. The white toner and the color toner satisfy a relation of a following expression: 0.3≤log μ(W110)−log μ(C100).
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公开(公告)号：US20190212666A1
公开(公告)日：2019-07-11
申请号：US16194631
申请日：2018-11-19
Applicant: Konica Minolta, Inc.
Inventor： Junya UEDA , Shinya Obara , Takuya Takahashi , Ikuko Sakurada , Satoshi Uchino
CPC classification number: G03G9/09708 , G03G9/0819 , G03G9/08711 , G03G9/09716 , G03G15/0865
Abstract: Provided is an electrostatic image developing toner containing toner mother particles having external additives on a surface of the mother particle, wherein the external additives contains calcium titanate particles having an average primary particle size in the range of 50 to 150 nm, and alumina particles; and an average primary particle size of the alumina particles is less than the average primary particle size of the calcium titanate particles.
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公开(公告)号：US20190056679A1
公开(公告)日：2019-02-21
申请号：US16104534
申请日：2018-08-17
Applicant: Konica Minolta, Inc.
Inventor： Junya UEDA , Satoshi UCHINO , Shinya OBARA , Takuya TAKAHASHI
Abstract: An electrostatic latent image developing toner includes toner particles having silica particles as an external additive on surfaces of toner base particles, wherein surfaces of a part or all of the silica particles are modified with silicone oil, and the following relational formula (1) is satisfied. 0.30≤Si(B)/Si(A)≤0.65 relational formula (1) [In the relational formula (1), Si(A) represents a NET intensity of a Si element contained in the electrostatic latent image developing toner, measured by a wavelength dispersive X-ray fluorescence analyzer. Si(B) represents a NET intensity of a Si element contained in the electrostatic latent image developing toner ultrasonically dispersed in water, measured by a wavelength dispersive X-ray fluorescence analyzer.]
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公开(公告)号：US20170212440A1
公开(公告)日：2017-07-27
申请号：US15278647
申请日：2016-09-28
Applicant: Konica Minolta, Inc.
Inventor： Junya UEDA , Kenshi MIYAJIMA , Takaki KAWAMURA
IPC: G03G9/087
CPC classification number: G03G9/08755 , G03G9/0804 , G03G9/0812 , G03G9/08708 , G03G9/08711 , G03G9/08733 , G03G9/08795 , G03G9/08797 , G03G9/09321 , G03G9/09328 , G03G9/09364 , G03G9/09371 , G03G9/09392
Abstract: An electrostatic image developing toner including a toner particle, wherein the toner particle contains a vinyl resin which is a polymer of a vinyl monomer having an acid group, a polyester resin, at least one of aluminum (Al) and magnesium (Mg), and tin (Sn), and when net intensities of Al, Mg and Sn in the toner particle measured by fluorescent X-ray analysis are respectively expressed as IAl, IMg and ISn, a ratio (IAl+IMg)/ISn is within a range of 0.5 to 2.5.
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10.发明申请公开(公告)号：US20170023872A1
公开(公告)日：2017-01-26
申请号：US15069068
申请日：2016-03-14
Applicant: Konica Minolta, Inc.
Inventor： Junya UEDA , Shiro HIRANO , Kenshi MIYAJIMA
CPC classification number: G03G9/08711 , G03G9/0804 , G03G9/0806 , G03G9/0815 , G03G9/0819 , G03G9/0821 , G03G9/0825 , G03G9/08755
Abstract: An electrostatic latent image-developing toner includes a styrene-acrylic resin, an amorphous polyester resin, and a crystalline polyester resin. The electrostatic latent image-developing toner shows maximum absorption peaks at least in absorption wavenumber ranges of 690 to 710 cm−1, 1190 to 1220 cm−1, and 1230 to 1300 cm−1 in an absorption spectrum measured by attenuated total reflection with a Fourier transform infrared spectrometer. The ratio (P3/P1) of the height (P3) of the maximum absorption peak in the range of 1230 to 1300 cm−1 to the height (P1) of the maximum absorption peak in the range of 690 to 710 cm−1 is 0.02 to 6.00.
Abstract translation: 静电潜像显影调色剂包括苯乙烯 - 丙烯酸树脂，非晶聚酯树脂和结晶聚酯树脂。 静电潜像显影调色剂在通过衰减全反射测量的吸收光谱中至少在690至710cm -1，1190至1220cm -1和1230至1300cm -1的吸收波数范围内显示最大吸收峰， 傅里叶变换红外光谱仪。 1230〜1300cm -1范围内的最大吸收峰的高度（P3）与690〜710cm -1范围内最大吸收峰的高度（P1）的比值（P3 / P1）为 0.02〜6.00。
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