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    PHOTORESPONSIVE COMPOUND
    2.
    发明申请
    PHOTORESPONSIVE COMPOUND 有权

    公开(公告)号：US20230067136A1

    公开(公告)日：2023-03-02

    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 ,  G03G9/087 ,  G03G15/20 ,  C09J7/25

    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.

    PHOTORESPONSIVE POLYMER
    3.
    发明申请
    PHOTORESPONSIVE POLYMER 有权

    公开(公告)号：US20220373913A1

    公开(公告)日：2022-11-24

    申请号：US17658563

    申请日：2022-04-08

    Applicant: Konica Minolta, Inc.

    Inventor： Kouji SUGAMA ,  Yukiko NAKAI ,  Kazuaki NAKAMURA ,  Toyoko SHIBATA

    IPC: G03G9/087 ,  C08F26/06 ,  C08F293/00 ,  G03G15/04

    Abstract: A photoresponsive polymer includes a structural unit represented by the following general formula (1), the photoresponsive polymer being fluidized by light irradiation, and reversibly non-fluidized: [Chemical formula 1] R1—Z1═Z2—R2  General formula (1) in the formula, Z1 and Z2 each represent CH or N, and Z1≠Z2, R1 represents 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, R2 represents an aromatic heterocyclic group with or without a substituent, and at least one of the R1 and the R2 is bonded to a group containing a structure derived from a polymerizable group.

    METHOD FOR PRODUCING ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER
    5.
    发明公开
    METHOD FOR PRODUCING ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER 审中-公开

    公开(公告)号：US20240337959A1

    公开(公告)日：2024-10-10

    申请号：US18622708

    申请日：2024-03-29

    Applicant: Konica Minolta, Inc.

    Inventor： Junya ONISHI ,  Yusuke TAKIGAURA ,  Yukiko NAKAI ,  Michiaki ISHIKAWA ,  Keiji ARAI

    IPC: G03G9/08 ,  G03G9/087

    CPC classification number: G03G9/0815 ,  G03G9/0823 ,  G03G9/08755

    Abstract: Disclosed is a method for producing an electrostatic charge image developing toner, including: drying wet toner base particles to produce the electrostatic charge image developing toner. The toner base particles contain an amorphous polyester that is a polycondensate of a polyvalent carboxylic acid and a polyhydric alcohol. In the amorphous polyester, a content of a structural unit derived from bisphenol A or a bisphenol A derivative is 10 mol % or less with respect to total moles of a structural unit derived from the polyhydric alcohol. The drying comprises drying the wet toner base particles with an airflow in a dryer. A temperature of the airflow is equal to or higher than 60° C. A velocity of the airflow is greater than or equal to 5 m/sec.

    ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER AND IMAGE FORMING METHOD
    7.
    发明申请
    ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER AND IMAGE FORMING METHOD 有权

    公开(公告)号：US20250130514A1

    公开(公告)日：2025-04-24

    申请号：US18919597

    申请日：2024-10-18

    Applicant: KONICA MINOLTA, INC.

    Inventor： Atsushi IIOKA ,  Kazuya ISOBE ,  Yukiko NAKAI ,  Shiori TSUDA ,  Genki WATANABE

    IPC: G03G9/087

    Abstract: Disclosed is an electrostatic charge image developing toner including a toner base particle containing a binder resin and a colorant. The electrostatic charge image developing toner contains, as the binder resin, a polymer having at least a structural unit represented by a general formula (1), and a concentration of radiocarbon isotope 14C is 21.5 pMC or more, and in the general formula (1), R1 represents a hydrogen atom or a methyl group, and R2 represents an alicyclic hydrocarbon group having 6 to 12 carbon atoms.

    PHOTORESPONSIVE COMPOUND
    9.
    发明申请
    PHOTORESPONSIVE COMPOUND 有权

    公开(公告)号：US20220390824A1

    公开(公告)日：2022-12-08

    申请号：US17664179

    申请日：2022-05-19

    Applicant: Konica Minolta, Inc.

    Inventor： Yukiko NAKAI ,  Toyoko SHIBATA ,  Kazuaki NAKAMURA ,  Kouji SUGAMA

    IPC: G03C1/73 ,  G03G9/08 ,  C08F220/18

    Abstract: Provided is a compound which is fluidized by light irradiation and is less colored. The compound is a compound represented by the following general formula (1), which is fluidized by light irradiation: R1—CH═N—R2  General Formula (1) wherein R1 is a substituted or unsubstituted cyclic hydrocarbon group or a substituted or unsubstituted heterocyclic group; and R2 is a substituted or unsubstituted heterocyclic group containing a nitrogen atom bonded to the nitrogen atom in the general formula (1).

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