INKJET INK AND IMAGE-FORMING METHOD
    2.
    发明申请

    公开(公告)号:US20180022949A1

    公开(公告)日:2018-01-25

    申请号:US15549865

    申请日:2016-02-02

    发明人: Masashi IKEDA

    IPC分类号: C09D11/38 B41J11/00

    摘要: The purpose of the present invention is to provide an active ray-curable inkjet ink capable of further enhancing gloss uniformity, surface curability, and scratch resistance of a formed image. The purpose is achieved by an active ray-curable inkjet ink containing a polymerization initiator, a photopolymerizable compound, and a gelling agent, and that undergoes a reversible sol-gel phase transition by temperature change. The inkjet ink contains a polymerization initiator with a molecular weight of 360 or more, and a polyfunctional photopolymerizable compound. The inkjet ink contains 3.0 mass % or more and less than 8.0 mass % of the polymerization initiator with a molecular weight of 360 or more, 1.0 mass % or more and less than 5.0 mass % of the gelling agent, less than 0.1 mass % of the initiator with a molecular weight of 360 or more, and less than 5.0 mass % of the monofunctional photopolymerizable compound.

    Ink-jet recording method
    6.
    发明授权

    公开(公告)号:US09840086B2

    公开(公告)日:2017-12-12

    申请号:US15122692

    申请日:2015-03-13

    发明人: Masashi Ikeda

    摘要: The present invention addresses the problem of providing an ink-jet recording method with which it is possible to sufficiently remove air bubbles contained in an actinic-ray-curable ink-jet ink and to heighten the delivery stability and curability of the ink. The ink-jet recording method employs an actinic-ray-curable ink-jet ink which comprises a colorant, a photopolymerization initiator, and a photopolymerizable compound. The ink-jet recording method comprises: a step in which the ink-jet ink is introduced into a depressurized space within an ink-jet recorder and deaerated at an ink temperature which is 50° C. or higher but lower than 120° C.; a step in which droplets of the deaerated ink-jet ink are ejected from the recording head and delivered to a recording medium; and a step in which the ink droplets delivered to the recording medium are irradiated with actinic rays to cure the ink droplets.