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    INK, INK SET, AND INKJET RECORDING DEVICE
    4.
    发明公开
    INK, INK SET, AND INKJET RECORDING DEVICE 审中-公开
    TINTE，TINTENSATZ UND TINTENSTRAHLAUFZEICHNUNGSVERFAHREN

    公开(公告)号：EP3191556A4

    公开(公告)日：2017-08-16

    申请号：EP15840106

    申请日：2015-08-31

    申请人： RICOH CO LTD

    发明人： YOKOHAMA YUUKI ,  MAEKAWA TSUTOMU ,  BANNAI AKIKO ,  KOJIMA MARIKO ,  GOTOU HIROSHI ,  NAKAGAWA TOMOHIRO

    IPC分类号： C09D11/322 ,  B41J2/01 ,  B41J2/175 ,  B41M5/00 ,  C09D11/40

    CPC分类号： C09D11/322 ,  B41J2/17503 ,  B41J11/002 ,  C09D11/36 ,  C09D11/40

    摘要： To provide an ink, which contains: water; a pigment; and a first water-soluble organic solvent, wherein the first water-soluble organic solvent contains a water-soluble organic solvent (G) having a boiling point of 280° C. to 300° C., a water-soluble organic solvent (X) having a boiling point of 180° C. to 190° C., and a water-soluble organic solvent (Y) having a boiling point of 190° C. to 200° C., wherein the first water-soluble organic solvent contains a water-soluble organic solvent (G) having a boiling point of 280° C. to 300° C., a water-soluble organic solvent (X) having a boiling point of 180° C. to 190° C., and a water-soluble organic solvent (Y) having a boiling point of 190° C. to 200° C., wherein the ink satisfies the following formulae: 24≦X≦40 2≦X/Y≦20 where X [% by mass] is an amount of the water-soluble organic solvent (X), and Y [% by mass] is an amount of the water-soluble organic solvent (Y).

    摘要翻译： 提供一种墨水，其包含：水; 颜料; 和第一水溶性有机溶剂，其中所述第一水溶性有机溶剂含有沸点为280℃至300℃的水溶性有机溶剂（G），沸点为沸点的水溶性有机溶剂（X） 沸点为190℃〜190℃的水溶性有机溶剂（Y）和沸点为190℃〜200℃的水溶性有机溶剂（Y），其中，所述第一水溶性有机溶剂含有沸点为180〜190℃的水溶性有机溶剂 在280〜300℃的温度下，沸点为180〜190℃的水溶性有机溶剂（X）和沸点为190〜200℃的水溶性有机溶剂（Y），其中， 油墨满足下式：24≤X≤402≤X/Y≤20其中X [质量％]是水溶性有机溶剂（X）的量，并且Y [质量％]是 的水溶性有机溶剂（Y）。

    INKJET RECORDING METHOD AND INKJET RECORDING DEVICE
    7.
    发明公开
    INKJET RECORDING METHOD AND INKJET RECORDING DEVICE 审中-公开
    喷墨记录方法和喷墨记录装置

    公开(公告)号：EP3041682A4

    公开(公告)日：2017-01-04

    申请号：EP14841666

    申请日：2014-08-29

    申请人： RICOH CO LTD

    发明人： MASUDA KIMINORI ,  KOJIMA MARIKO ,  BANNAI AKIKO ,  TAMAI TAKASHI ,  KITAOKA NAOKO ,  KOHDA TOMOHIKO

    IPC分类号： B41J2/015 ,  B41J2/01 ,  B41J2/045

    CPC分类号： B41J2/04598 ,  B41J2/04581 ,  B41J2/04586 ,  B41J2/04588 ,  B41J2/04595 ,  B41J2/14274 ,  C09D11/40

    摘要： An inkjet recording method performed by inkjet recording device including nozzle plate with nozzle to eject droplets of ink; recording head including liquid chamber with which the nozzle is in communication, and pressure-generating unit configured to generate pressure in the liquid chamber; and signal-generating unit configured to generate signal applied to the pressure-generating unit, and allowing the droplets of ink to eject by pressure generated by the pressure-generating unit according to the signal, wherein the ink has static surface tension of 18.0 mN/m to 27.0 mN/m at 25° C., the ink has receding contact angle on the nozzle plate of 50° or more, the signal has two-step pull pulse for pulling the ink into the nozzle in two-step manner within one printing unit cycle, and the method includes pulling the ink located in proximity to nozzle outlet into the nozzle of the two-step pull pulse, to form meniscus at predetermined position.