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公开(公告)号：US20160259259A1
公开(公告)日：2016-09-08
申请号：US15051226
申请日：2016-02-23
Applicant: Konica Minolta, Inc.
Inventor： Noboru UEDA , Shiro HIRANO
IPC: G03G9/087
CPC classification number: G03G9/08786
Abstract: Provided is a means to exhibit excellent low temperature fixability and to improve all of the heat-resistant storage property of a toner, charging uniformity, and transferability under a high temperature and high humidity condition.A toner for developing electrostatic charge image which contains at least a binder resin, in which the binder resin has a core-shell structure having a core portion which contains a hybrid crystalline polyester resin formed by chemical bonds of a crystalline polyester resin unit with an amorphous resin unit other than a polyester resin and an amorphous resin and a shell portion which contains a hybrid amorphous polyester resin formed by chemical bonds of an amorphous polyester resin unit with an amorphous resin unit other than a polyester resin.
Abstract translation: 提供了显示出优异的低温定影性并提高调色剂的全部耐热储存性，充电均匀性和在高温高湿条件下的转印性的方法。 一种用于显影静电荷图像的调色剂，其至少包含粘合剂树脂，其中所述粘合剂树脂具有核 - 壳结构，所述核 - 壳结构具有核心部分，所述芯 - 壳结构含有通过结晶聚酯树脂单元的化学键形成的混合结晶聚酯树脂， 除了聚酯树脂和无定形树脂以外的树脂单元和壳部分，其含有通过非晶形聚酯树脂单元与非聚酯树脂之外的无定形树脂单元的化学键形成的混合无定形聚酯树脂。
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公开(公告)号：US20150227069A1
公开(公告)日：2015-08-13
申请号：US14616185
申请日：2015-02-06
Applicant: Konica Minolta, Inc.
Inventor： Kouji SUGAMA , Hiroshi NAGASAWA , Anju HORI , Junya ONISHI , Noboru UEDA
CPC classification number: G03G9/08733 , G03G9/0804 , G03G9/0819 , G03G9/0825 , G03G9/08711 , G03G9/08755 , G03G9/08782 , G03G9/08795 , G03G9/08797
Abstract: Disclosed is a toner for electrostatic image development having excellent low-temperature fixability and high-temperature off-set resistance, attaining good image density, and having excellent homogeneity in image density. The toner comprises toner particles containing a binder resin which contains an amorphous resin (A) and an amorphous polyester resin (B) different from the resin (A) and a colorant, wherein the toner particles have a domain-matrix structure having the resin (B) as a domain phase dispersed in a matrix phase comprising the resin (A), and in a cross-sectional image of the toner particles, the number average domain diameter of the domain phase of the resin (B) having a domain diameter of 100 nm or more is 100 to 200 nm and an area ratio of the domain phase having a domain diameter of 500 nm or more relative to the total area of the domain phase is 0 to 10%.
Abstract translation: 公开了一种用于静电图像显影的调色剂，其具有优异的低温定影性和高温脱模性，获得良好的图像密度，并且具有优异的图像浓度均匀性。 调色剂包括含有粘合剂树脂的调色剂颗粒，其含有不同于树脂（A）的无定形树脂（A）和无定形聚酯树脂（B）和着色剂，其中调色剂颗粒具有具有树脂的畴 - 基质结构（ B）作为分散在包含树脂（A）的基质相中的畴相，并且在调色剂颗粒的横截面图像中，具有畴直径的树脂（B）的畴相的数均域直径 100nm以上的范围为100〜200nm，相域相位域的总面积为500nm以上的畴相的面积比为0〜10％。
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公开(公告)号：US20170168407A1
公开(公告)日：2017-06-15
申请号：US15370134
申请日：2016-12-06
Applicant: Konica Minolta, Inc.
Inventor： Junya ONISHI , Shiro HIRANO , Noboru UEDA , Kouji SUGAMA , Aya SHIRAI
CPC classification number: G03G9/0804 , G03G9/0819 , G03G9/08711 , G03G9/08755 , G03G9/08797 , G03G9/09328 , G03G9/09364 , G03G9/09392
Abstract: 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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Patent Agency Ranking
公开(公告)号：US20160370722A1
公开(公告)日：2016-12-22
申请号：US15092213
申请日：2016-04-06
Applicant: Konica Minolta, Inc.
Inventor： Kouji SUGAMA , Yohei OHNO , Keisuke ASANO , Noboru UEDA
IPC: G03G9/087
CPC classification number: G03G9/08755 , G03G9/08713
Abstract: Provided is an electrostatic image developing toner having toner mother particles containing a binder resin and a releasing agent, wherein the binder resin contains an amorphous vinyl resin and a crystalline polyester resin; the releasing agent contains a first releasing agent component containing an ester wax and a second releasing agent component containing a microcrystalline wax; a content of the first releasing agent component in the releasing agent is in the range of 40 to 98 mass %; a content of the second releasing agent component in the releasing agent is in the range of 2 to 60 mass %; and a content of the crystalline polyester resin in the binder resin is in the range of 5 to 20 mass %.
Abstract translation: 提供一种静电图像显影调色剂，其具有含有粘合剂树脂和脱模剂的调色剂母粒，其中粘合剂树脂含有无定形乙烯基树脂和结晶聚酯树脂; 脱模剂含有含有酯蜡的第一脱模剂成分和含有微晶蜡的第二脱模剂成分; 脱模剂中的第一脱模剂成分的含量在40〜98质量％的范围内。 脱模剂中的第二脱模剂成分的含量为2〜60质量％的范围。 粘结剂树脂中的结晶性聚酯树脂的含量为5〜20质量％的范围。
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公开(公告)号：US20220011685A1
公开(公告)日：2022-01-13
申请号：US17371228
申请日：2021-07-09
Applicant: Konica Minolta, Inc.
Inventor： Yuya KUBO , Takanari KAYAMORI , Noboru UEDA
Abstract: The toner for developing an electrostatic charge image of the present invention contains a toner base particle comprising a binder resin, at least two kinds of organic pigments and carbon black, and strontium titanate as an external additive.
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公开(公告)号：US20200379364A1
公开(公告)日：2020-12-03
申请号：US16884798
申请日：2020-05-27
Applicant: Konica Minolta, Inc.
Inventor： Noboru UEDA , Aya SHIRAI , Takaki KAWAMURA , Natsuki ITO , Yusuke TAKIGAURA , Ami MOTOHASHI
Abstract: Provided is an electrostatic latent image developing toner capable of preventing a release agent from adhering to a member such as a paper conveying roller or the like.An electrostatic latent image developing toner contains at least a binder resin, a colorant, and a release agent, wherein the release agent contains at least an ester wax and the ester wax is an ester wax having a total carbon number of 45 or more and 71 or less, and a top temperature of an exothermic peak during cooling of the electrostatic latent image developing toner measured by a differential scanning calorimetry is within a range of 60° C. or higher and 85° C. or lower.
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公开(公告)号：US20180088477A1
公开(公告)日：2018-03-29
申请号：US15710259
申请日：2017-09-20
Applicant: Konica Minolta, Inc.
Inventor： Kaori MATSUSHIMA , Noboru UEDA , Shiro HIRANO , Kouji SUGAMA
CPC classification number: G03G9/08755 , G03G9/0821 , G03G9/0825 , G03G9/08728 , G03G9/08788 , G03G9/08795 , G03G9/08797
Abstract: An electrostatic latent image developing toner includes toner particles which comprises a binder resin and a releasing agent. A main component of the binder resin is a polyester resin. The binder resin comprises a crystalline polyester resin, an amorphous polyester resin and a hybrid vinyl resin. The hybrid vinyl resin is composed of a vinyl polymer segment and at least one segment selected from a polyester polymer segment, an urethane polymer segment and an urea polymer segment which is chemically bound to the vinyl polymer segment. A main component of the hybrid vinyl resin is the vinyl polymer segment which comprises a structural unit derived from a monomer having a specific structure. A tetrahydrofuran-soluble fraction of the toner has a main peak of a molecular weight distribution measured by gel permeation chromatography within the range of 11000 to 30000.
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公开(公告)号：US20160370721A1
公开(公告)日：2016-12-22
申请号：US15170441
申请日：2016-06-01
Applicant: Konica Minolta, Inc.
Inventor： KOUJI SUGAMA , Hiroshi NAGASAWA , Anju HORI , Noboru UEDA
CPC classification number: G03G9/08728 , G03G9/08755
Abstract: Provided is an electrostatic image developing toner comprising a toner base particle containing a binder resin and a releasing agent, wherein the binder resin comprises an amorphous vinyl resin and a crystalline polyester resin; a weight-average molecular weight of the electrostatic image developing toner is in the range of 50000 to 90000, when calculated from a chromatogram which represents a molecular weight distribution and is measured by gel permeation chromatography; a ratio of content of a resin component having a molecular weight of 100000 or more is in the range of 10 to 20% by area, in the chromatogram which represents the molecular weight distribution; the crystalline polyester resin has a melting point in the range of 65 to 85° C.; and, a ratio of content of the crystalline polyester resin in the binder resin is in the range of 5 to 20% by mass.
Abstract translation: 提供一种静电图像显影调色剂，其包含含有粘合剂树脂和脱模剂的调色剂基础颗粒，其中粘合剂树脂包括无定形乙烯基树脂和结晶聚酯树脂; 当由表示分子量分布的色谱图计算时，静电图像显影调色剂的重均分子量在50000-90000的范围内，并通过凝胶渗透色谱法测量; 在表示分子量分布的色谱图中，分子量为100000以上的树脂成分的含量比例在10〜20面积的范围内; 结晶性聚酯树脂的熔点在65〜85℃的范围内。 结晶性聚酯树脂在粘合剂树脂中的含量比在5〜20质量％的范围内。
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