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    Method Of Producing Coloring Material Dispersion
    1.
    发明申请
    Method Of Producing Coloring Material Dispersion 有权

    公开(公告)号：US20220204777A1

    公开(公告)日：2022-06-30

    申请号：US17560604

    申请日：2021-12-23

    申请人： Seiko Epson Corporation

    发明人： Harunobu KOMATSU ,  Toshihiro OTAKE ,  Hiroshi ITO ,  Koji HORIBA

    IPC分类号： C09B67/46 ,  C09B69/10 ,  C09D11/328

    摘要： A method of producing a coloring material dispersion is a method of producing a coloring material dispersion that contains water and a coloring material, including a polymerization step of performing a polymerization reaction in a liquid phase that contains an organic solvent containing two or more hydroxyl and/or ether groups in a molecule, a hydrophobic monomer having an aromatic ring or a (meth)acrylic acid alkyl ester structure, and a hydrophilic monomer containing a carboxylic acid group or a sulfonic acid group to synthesize a dispersion resin. The dispersion resin has a weight-average molecular weight of 5,000 or greater and less than 100,000. A content of a constituent unit A corresponding to the hydrophobic monomer in all constituent monomers contained in the dispersion resin is 50 mol % or greater.

    Piezoelectric Element And Liquid Ejecting Head
    2.
    发明申请
    Piezoelectric Element And Liquid Ejecting Head 审中-公开

    公开(公告)号：US20190084306A1

    公开(公告)日：2019-03-21

    申请号：US16135352

    申请日：2018-09-19

    申请人： Seiko Epson Corporation

    发明人： Koichi MOROZUMI ,  Hiromu MIYAZAWA ,  Hiroshi KATO ,  Hiroshi ITO

    IPC分类号： B41J2/14 ,  H01L41/047 ,  H01L41/187 ,  H01L41/311

    摘要： A piezoelectric element including a piezoelectric layer having a perovskite structure including lead, zirconium, and titanium, and an electrode provided on the piezoelectric layer is provided. In the piezoelectric layer, in a range of 50 nm or smaller from an interface between the piezoelectric layer and the electrode in a thickness direction, a ratio c/a of a lattice spacing a in a direction perpendicular to the thickness direction and a lattice spacing c in the thickness direction satisfies 0.986≤c/a≤1.014.

    LIQUID COMPOSITION, PIGMENT DISPERSION LIQUID, AND INK JET RECORDING AQUEOUS INK COMPOSITION
    7.
    发明申请
    LIQUID COMPOSITION, PIGMENT DISPERSION LIQUID, AND INK JET RECORDING AQUEOUS INK COMPOSITION 审中-公开
    液体组合物，颜料分散液和喷墨记录水份墨水组合物

    公开(公告)号：US20170009093A1

    公开(公告)日：2017-01-12

    申请号：US15175410

    申请日：2016-06-07

    申请人： Seiko Epson Corporation

    发明人： Hiroshi ITO

    IPC分类号： C09D11/324 ,  C09D11/328 ,  C09D11/30

    CPC分类号： C09D11/30 ,  C09D11/033 ,  C09D11/322

    摘要： A liquid composition contains a first solvent that is a propanediol compound having a water-octanol partition coefficient in the range of 0.5 to 2.0 and containing a phenoxy or a benzyloxy group, a second solvent that is a water-soluble organic solvent having a water-octanol partition coefficient in the range of −1.0 to 1.0, water, and a coloring material. The first solvent content is in the range of 0.05% by mass to 0.5% by mass, and the second solvent content is in the range of 0.5% by mass to 15% by mass.

    摘要翻译： 液体组合物含有作为具有0.5〜2.0的水辛醇分配系数且含有苯氧基或苄氧基的丙二醇化合物的第一溶剂，含有水溶性有机溶剂的第二溶剂， 辛醇分配系数在-1.0至1.0的范围内，水和着色材料。 第一溶剂含量在0.05质量％至0.5质量％的范围内，第二溶剂含量在0.5质量％至15质量％的范围内。