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公开(公告)号：US10133200B2
公开(公告)日：2018-11-20
申请号：US15170441
申请日：2016-06-01
Applicant: Konica Minolta, Inc.
Inventor： Kouji Sugama , Hiroshi Nagasawa , Anju Hori , Noboru Ueda
IPC: G03G9/087
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.
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公开(公告)号：US20180307152A1
公开(公告)日：2018-10-25
申请号：US15948020
申请日：2018-04-09
Applicant: Konica Minolta, Inc.
Inventor： Natsuki Ito , Noboru Ueda , Kouji Sugama , Kenshi Miyajima , Yohei Ohno , Hidehito Haruki , Keisuke Asano
CPC classification number: G03G9/08755 , G03G9/08711 , G03G9/08795 , G03G9/08797 , G03G9/09 , G03G9/0904 , G03G9/0926 , G03G13/013
Abstract: Provided is a color image forming process using colorant-containing toners of multiple colors containing colorants respectively having different resistances, wherein each of the colorant-containing toners contains an amorphous resin, a crystalline polyester resin, and a mold release agent, at least the crystalline polyester resin contained in the colorant-containing toner other than the colorant-containing toner containing a colorant having the lowest resistance contains a hybrid crystalline polyester resin formed by bonding a crystalline polyester polymerized segment and an amorphous polymerized segment, and the content of the amorphous polymerized segment in the hybrid crystalline polyester resin contained in the colorant-containing toner other than the colorant-containing toner containing a colorant having the lowest resistance is greater than the content of the amorphous polymerized segment in the crystalline polyester resin contained in the colorant-containing toner containing a colorant having the lowest resistance.
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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
Applicant: Konica Minolta, Inc.
Inventor： Shiro Hirano , Noboru Ueda , Kouji Sugama , Junya Onishi , Aya Shirai , Tatsuya Fujisaki
CPC classification number: 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
Abstract: 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
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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公开(公告)号：US09715186B2
公开(公告)日：2017-07-25
申请号：US15092213
申请日：2016-04-06
Applicant: Konica Minolta, Inc.
Inventor： Kouji Sugama , Yohei Ohno , Keisuke Asano , Noboru Ueda
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 %.
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Patent Agency Ranking
公开(公告)号：US09568848B2
公开(公告)日：2017-02-14
申请号：US14883214
申请日：2015-10-14
Applicant: Konica Minolta, Inc.
Inventor： Hiroshi Nagasawa , Noboru Ueda , Kouji Sugama , Anju Hori , Keisuke Asano
CPC classification number: G03G9/08755 , G03G9/0821
Abstract: An electrostatic image developing toner includes toner particles that contain a binder resin and a coloring agent. The binder resin includes an amorphous resin and a crystalline polyester resin. The toner satisfies Relations (1) and (2). ΔH1 is the amount of heat absorption based on a melting peak of the crystalline polyester resin in a first heating step from room temperature to 150° C. ΔH2 is the amount of heat absorption based on a melting peak of the crystalline polyester resin in a second heating step from 0° C. to 150° C. ΔH(theo.) is a value of fusion enthalpy calculated from a mass ratio of a structural unit derived from a linear aliphatic monomer contained in the binder resin based on a group contribution method. 0.2≦ΔH1/ΔH(theo.)≦0.5 Relation (1): 0.1≦ΔH2/ΔH(theo.)≦0.3 Relation (2):
Abstract translation: 静电图像显影调色剂包括含有粘合剂树脂和着色剂的调色剂颗粒。 粘合剂树脂包括无定形树脂和结晶聚酯树脂。 调色剂满足关系（1）和（2）。 ＆Dgr; H1是在从室温至150℃的第一加热步骤中基于结晶聚酯树脂的熔融峰的吸热量。＆Dgr; H 2是基于结晶聚酯的熔融峰的吸热量 树脂在0℃至150℃的第二加热步骤中。H（theo。）是由源自基于粘合剂树脂的线性脂族单体的结构单元的质量比计算的熔融焓值 采用团体捐款方式。 0.2关系（1）：0.1＆nlE;＆Dgr; H2 /＆Dgr; H（theo。）＆nlE; 0.3关系（2）：
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公开(公告)号：US12181833B2
公开(公告)日：2024-12-31
申请号：US17376281
申请日：2021-07-15
Applicant: Konica Minolta, Inc.
Inventor： Kouji Sugama , Yukiko Nakai , Haruo Horiguchi , Kazuaki Nakamura , Toyoko Shibata
IPC: G03G9/087 , C08G63/688 , C09J9/00 , C09J167/00 , G03G15/20
Abstract: [Object]
An object of the present invention is to provide a photoresponsive polymer that sufficiently secures photoresponsiveness to be fluidized by light irradiation and reversibly non-fluidized, improves fixability, and further has good color reproducibility.
[Solution]
Provided is a photoresponsive polymer containing a structural unit derived from an azomethine derivative represented by the following general formula (1), the photoresponsive polymer being fluidized by light irradiation and reversibly non-fluidized: R1—Z1═Z2—R2 General formula (1): Z1 and Z2 are N or CH, while Z1≠Z2, R1 contains an aromatic hydrocarbon structure, R2 contains an aromatic heterocyclic structure, and a hydrogen atom is bonded to at least one carbon atom bonded adjacent to a carbon atom in the aromatic heterocyclic structure bonded to the Z2.-
公开(公告)号：US12006292B2
公开(公告)日：2024-06-11
申请号：US17659730
申请日：2022-04-19
Applicant: Konica Minolta, Inc.
Inventor： Yukiko Nakai , Kouji Sugama , Kazuaki Nakamura , Toyoko Shibata
IPC: C07D231/12 , C09J7/25 , G03G9/087 , G03G15/20 , B41J11/00 , C08F212/08 , C08F220/18 , C08F257/02 , C08F285/00 , G03G9/09
CPC classification number: C07D231/12 , C09J7/25 , G03G9/08708 , G03G9/08728 , G03G15/2064 , B41J11/0021 , C08F212/08 , C08F220/1806 , C08F257/02 , C08F285/00 , G03G9/0922
Abstract: Provided is a compound that is fluidized by light irradiation and reversibly non-fluidized, is not significantly colored, and improves fixability and exhibits excellent image stability and color reproducibility when used for a toner.
Provided is a compound represented by the following general formula (1), which is fluidized by light irradiation and reversibly non-fluidized:
wherein
Z1 and Z2 are CH or N, and Z1≠Z2;
R1 is an aromatic hydrocarbon group having a substituent Ra selected from the group consisting of an alkyl group, an alkoxy group and a halogen atom at each of two ortho positions with respect to Z1; and
R2 is a substituted or unsubstituted aromatic heterocyclic group.-
公开(公告)号：US10901333B2
公开(公告)日：2021-01-26
申请号：US16439107
申请日：2019-06-12
Applicant: Konica Minolta, Inc.
Inventor： Kouji Sugama , Hiroshi Nagasawa , Anju Hori , Noboru Ueda
IPC: G03G9/087
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.
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公开(公告)号：US20190294064A1
公开(公告)日：2019-09-26
申请号：US16439107
申请日：2019-06-12
Applicant: Konica Minolta, Inc.
Inventor： Kouji Sugama , Hiroshi Nagasawa , Anju Hori , Noboru Ueda
IPC: G03G9/087
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.
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