4.
    发明专利
    未知

    公开(公告)号:DE2623508A1

    公开(公告)日:1976-12-23

    申请号:DE2623508

    申请日:1976-05-26

    Applicant: IBM

    Abstract: Improvements in water based magnetic inks of the type containing non-ionic, cationic and/or anionic surfactants by the inclusion of glycerol, non-volatile solvent such as mono-lower alkyl ethers of ethylene glycol and low molecular weight polyethylene diols.

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