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公开(公告)号：US10078283B2
公开(公告)日：2018-09-18
申请号：US15209876
申请日：2016-07-14
申请人： Konica Minolta, Inc.
发明人： Aya Shirai , Shiro Hirano , Junya Onishi
CPC分类号： G03G9/08755 , G03G9/0806 , G03G9/08711 , G03G9/08724 , G03G9/08728 , G03G9/08797 , G03G9/093
摘要： Provided is a toner for developing electrostatic images containing a toner particle. The toner particle contains a binder resin and a release agent. The binder resin contains a vinyl resin component and a crystalline polyester resin component. The vinyl resin component has a structural unit derived from an alkyl (meth)acrylate monomer represented by Formula (1): H2C═CR1—COOR2 Formula (1): In Formula (1), R1 represents a hydrogen atom or a methyl group, and R2 represents an alkyl group having 8 to 22 carbon atoms. The crystalline polyester resin component satisfies Formula (2): 5≤|Cacid−Calcohol|≤12 Formula (2): In Formula (2), Calcohol represents the number of carbon atoms of the main chain of a structural unit derived from a polyhydric alcohol and Cacid represents the number of carbon atoms of the main chain of a structural unit derived from a polyvalent carboxylic acid.
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公开(公告)号：US20150017584A1
公开(公告)日：2015-01-15
申请号：US14311933
申请日：2014-06-23
申请人： Konica Minolta, Inc.
发明人： Taiki AMEMIYA , Kaori Matsushima , Junya Onishi , Aya Shirai , Takaki Kawamura
IPC分类号： G03G9/087
CPC分类号： G03G9/08755 , G03G9/0806 , G03G9/0825 , G03G9/08711 , G03G9/08795 , G03G9/08797
摘要： Provided is a toner for electrostatic image development that has good low-temperature fixability, also has long-term heat-resistant storage stability and can form an image with unevenness in gloss suppressed. The toner for electrostatic image development includes toner particles. The toner particles have a domain-matrix structure in which a first domain phase including a crystalline polyester resin A and a second domain phase including a crystalline polyester resin B are dispersed in a matrix phase including a vinyl resin. The average diameter of the first domain phase is 400 to 900 nm, and the average diameter of the second domain phase is 10 to 200 nm. The melting point of the crystalline polyester resin A and the melting point of the crystalline polyester resin B are each 95° C. or lower.
摘要翻译： 本发明提供了具有良好的低温定影性的静电图像显影用调色剂，还具有长期的耐热保存稳定性，能够形成抑制不均匀的图像。 用于静电图像显影的调色剂包括调色剂颗粒。 调色剂颗粒具有域 - 基质结构，其中包括结晶聚酯树脂A的第一畴相和包含结晶聚酯树脂B的第二畴相分散在包括乙烯基树脂的基体相中。 第一畴相的平均直径为400〜900nm，第二畴相的平均直径为10〜200nm。 结晶性聚酯树脂A的熔点和结晶性聚酯树脂B的熔点分别为95℃以下。
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公开(公告)号：US09933716B2
公开(公告)日：2018-04-03
申请号：US15278687
申请日：2016-09-28
申请人： Konica Minolta, Inc.
发明人： Shiro Hirano , Noboru Ueda , Kouji Sugama , Junya Onishi , Aya Shirai , Tatsuya Fujisaki
CPC分类号： G03G9/08711 , G03G9/0825 , G03G9/08722 , G03G9/08733 , G03G9/08755 , G03G9/0902 , G03G9/0904 , G03G9/0926 , G03G9/09321 , G03G9/09342 , G03G9/09364 , G03G9/09392 , G03G9/09708 , G03G9/09725
摘要： The present invention relates to a toner for electrostatic charge image development, including toner base particles containing a binder resin containing as a main component a vinyl resin having a constitutional unit derived from a monomer having an acid group, and aluminum, wherein a concentration of the aluminum in the toner base particles, as measured by radio inductively coupled plasma emission spectral analysis, is from 900 to 2,200 ppm. According to the present invention, there is provided a means for improving the environmental stability of electrification, and the glossiness and the image density of the image to be formed in a good balance while maintaining sufficient low temperature fixability in a toner for electrostatic charge image development.
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公开(公告)号：US09846379B2
公开(公告)日：2017-12-19
申请号：US15370134
申请日：2016-12-06
申请人： Konica Minolta, Inc.
发明人： Junya Onishi , Shiro Hirano , Noboru Ueda , Kouji Sugama , Aya Shirai
CPC分类号： G03G9/0804 , G03G9/0819 , G03G9/08711 , G03G9/08755 , G03G9/08797 , G03G9/09328 , G03G9/09364 , G03G9/09392
摘要： The production process of the present invention includes: a first step of heating a dispersion containing an aqueous medium and a binder resin containing a crystalline resin to a temperature higher than or equal to the melting point of the crystalline resin in a step of aggregating and fusing a fine particle of the binder resin containing the crystalline resin to produce a toner base particle; a second step of cooling the dispersion having been heated in the first step and having a temperature higher than the recrystallization temperature Rc of the crystalline resin to a temperature lower than Rc at a temperature-lowering rate of 1° C./min or higher; and a third step of maintaining the dispersion having been cooled in the second step at a temperature higher than or equal to Rc−25° C. and lower than or equal to Rc−5° C. for 30 minutes or longer.
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公开(公告)号：US09372423B2
公开(公告)日：2016-06-21
申请号：US14807266
申请日：2015-07-23
申请人： Konica Minolta, Inc.
发明人： Anju Hori , Junya Onishi , Yasuko Uchino , Ikuko Sakurada , Natsuko Fujisaki , Junya Ueda , Takaki Kawamura
CPC分类号： G03G9/0827 , G03G9/0819 , G03G13/01 , G03G13/013 , G03G13/016 , G03G15/01 , G03G15/0168 , G03G15/0173
摘要： 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
摘要翻译： 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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公开(公告)号：US09983491B2
公开(公告)日：2018-05-29
申请号：US15439435
申请日：2017-02-22
申请人： Konica Minolta, Inc.
发明人： Junya Onishi , Shiro Hirano , Noboru Ueda , Kouji Sugama , Aya Shirai
IPC分类号： G03G9/08
CPC分类号： G03G9/0804 , G03G9/0815 , G03G9/0825 , G03G9/08755 , G03G9/08795 , G03G9/08797
摘要： A process for producing a toner of the present invention includes: a first step of heating a dispersion containing an aqueous medium and a binder resin containing a crystalline resin to a temperature higher than or equal to a melting point of the crystalline resin; and a second step of maintaining the dispersion at temperature T (° C.) for 30 minutes or longer in a state where a pH of the dispersion is maintained at 5.5 or higher and 9.0 or lower, in which the temperature T satisfies the following expression, Rc−25≤T≤Rc−5, where the Rc represents a recrystallization temperature (° C.) of the crystalline resin.
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公开(公告)号：US20170242357A1
公开(公告)日：2017-08-24
申请号：US15271880
申请日：2016-09-21
申请人： Konica Minolta, Inc.
发明人： Aya Shirai , Junya Onishi , Shiro Hirano , Kouji Sugama , Noboru Ueda
CPC分类号： G03G9/08755 , G03G9/0821 , G03G9/08797 , G03G9/0906
摘要： An image forming method of the present invention uses a specific toner set. The toner set includes a yellow toner, a magenta toner, a cyan toner and a black toner, and each of these toners contains an amorphous resin, a crystalline resin and a colorant. The colorant of the black toner contains a conductive black colorant. There is a specific relationship between an exothermic peak temperature of the black toner and exothermic peak temperatures of the chromatic color toners.
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公开(公告)号：US09740123B2
公开(公告)日：2017-08-22
申请号：US15060870
申请日：2016-03-04
申请人： Konica Minolta, Inc.
CPC分类号： G03G9/08711 , G03G9/0821 , G03G9/08755
摘要： A toner for developing electrostatic latent images contains a particulate toner which at least includes a colorant, a binder resin, a mold release agent, and a crystalline polyester resin. The binder resin contains a styrene-acrylic resin. The toner has a storage modulus G′, a difference (X) between the maximum value and the minimum value of the storage modulus G′, and a difference (Y) between the maximum value and the minimum value of a loss modulus G″ within the range of 140 to 180° C. satisfying relationships expressed by Conditional expressions (1) 1.0×102≦G′≦1.0×103, (2) 0≦X≦3.0×102, and (3) 0≦Y≦6.0×102.
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公开(公告)号：US09703220B1
公开(公告)日：2017-07-11
申请号：US15278727
申请日：2016-09-28
申请人： Konica Minolta, Inc.
发明人： Shiro Hirano , Noboru Ueda , Kouji Sugama , Junya Onishi , Aya Shirai , Tatsuya Fujisaki
CPC分类号： G03G9/091 , G03G9/08711 , G03G9/08755 , G03G9/08797 , G03G9/0918 , G03G9/0926 , G03G9/09708
摘要： The present invention relates to an image forming method using a yellow toner, a magenta toner, and a cyan toner, in which the yellow toner, the magenta toner, and the cyan toner respectively contain toner base particles containing a binder resin containing an amorphous polyester resin as a main component and a crystalline resin, aluminum, and a colorant, and the concentration of aluminum in the toner base particles of the yellow toner measured by high-frequency inductively coupled plasma emission spectral analysis satisfies a specific relation. According to the present invention, an image forming method and a toner set which can improve the thin paper separation property while maintaining favorable low temperature fixability are provided.
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10.发明授权Toner for developing electrostatic latent image and process for producing the same 有权用于显影静电潜像的调色剂及其制造方法公开(公告)号：US09588452B2
公开(公告)日：2017-03-07
申请号：US14846038
申请日：2015-09-04
申请人： Konica Minolta, Inc.
发明人： Tatsuya Fujisaki , Junya Onishi , Naoya Tonegawa , Shiro Hirano , Hidehito Haruki , Tatsuya Nagase
CPC分类号： G03G9/08755 , G03G9/0806
摘要： The toner according to the present invention comprises a matrix phase composed of a vinyl resin, and domain phases composed of a non-crystalline polyester resin dispersed in the matrix phase, and a number-average domain diameter of the domain phases composed of the non-crystalline polyester resin is 30 to 150 nm. The toner satisfies relation represented by a specific requirement of the total area of the domain phases present in a surface layer area of the toner particle, and the total area of the domain phases present in areas other than the surface layer area, in a given cross-section of the toner particle.
摘要翻译： 根据本发明的调色剂包括由乙烯基树脂构成的基体相和由分散在基体相中的非结晶性聚酯树脂构成的结晶相，以及由非晶态相组成的畴相的数均分子直径， 结晶性聚酯树脂为30〜150nm。 调色剂满足关于存在于调色剂颗粒的表面层区域中的畴相的总面积和存在于表面层以外的区域中的畴相的总面积的特定要求的关系 调色剂颗粒。
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