51.
    发明专利
    失效

    公开(公告)号:JPS4911231B1

    公开(公告)日:1974-03-15

    申请号:JP5949570

    申请日:1970-07-09

    IPC分类号: C07D209/38 C09B7/02

    WATER-BASED INK COMPOSITION AND METHOD FOR IMAGE FORMATION

    公开(公告)号:JP2001226614A

    公开(公告)日:2001-08-21

    申请号:JP2000039360

    申请日:2000-02-17

    发明人: OYA HIDENOBU

    摘要: PROBLEM TO BE SOLVED: To provide a water-based ink composition having long-term ink preservation stability and affording high image quality and sufficient image preservability, and to provide a method of forming images having high quality and sufficient preservability. SOLUTION: This water-based ink composition is characterized in that a precursor convertible to an insoluble pigment by at least one means selected from among chemical means, thermal means, photolytic means and radiative means is dissolved in a water-based solvent.