Thermosensitive recording medium
    2.
    发明授权
    Thermosensitive recording medium 失效
    热敏记录介质

    公开(公告)号:US4985390A

    公开(公告)日:1991-01-15

    申请号:US336127

    申请日:1989-04-11

    IPC分类号: B41M5/337

    CPC分类号: B41M5/3375

    摘要: A thermosensitive recording medium comprises a substrate and a thermosensitive, coloring layer, provided on the substrate, comprising a binder, a colorless or light-colored electron-donating dye, an electron-accepting compound to react with the electron-donating dye and form a coloring matter and then an ester compound obtained from a fatty acid having 20 to 28 carbon atoms and a straight or cyclic alcohol, the ester having a melting point of 50 to 100 degree C. and one or more non-phenolic hydroxy group. It is improved in prevention from fogging and sensitivity.

    Heat sensitive paper
    3.
    发明授权
    Heat sensitive paper 失效
    热敏纸

    公开(公告)号:US4988663A

    公开(公告)日:1991-01-29

    申请号:US443163

    申请日:1989-11-30

    CPC分类号: B41M5/44

    摘要: Disclosed is a heat sensitive paper comprising;(a) a base paper,(b) a coating layer on said base paper formed from an acrylic aqueous dispersion containing particles having an average diameter of 0.001 to 0.05 microns prepared by the following steps;(i) polymerizing of a monomer having a salt-forming group and a polymerizable double bond and a copolymerizable monomer in a hydrophilic organic solvent,(ii) neutralizing the salt-forming group by adding a neutralizing agent to the polymer solution, and(iii) adding water to the polymer solution and distilling away the hydrophilic organic solvent, and(c) a heat sensitive color developing layer comprising a colorless or light color electron donative dye and an electron acceptant compound which reacts with said electron donative dye to develop color, on said coating layer.