Patents by Inventor Masasi Oka

Masasi Oka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Hot melt ink thermal transfer recording sheet
    Patent number: 5631076
    Abstract: A hot melt ink thermal transfer recording sheet having enhanced color density, continuous tone and dot-reproducibilities and color brightness has an ink-receiving porous polymer coating layer having a plurality of pores with an average size of 0.5 to 30 .mu.m and an apparent density of 0.05 to 0.5 g/cm.sup.3, and formed on a substrate sheet by coating a coating liquid comprising a polymeric material and fine air bubbles introduced by a mechanical agitation so as to increase the apparent volume of the coating liquid to up to ten times the original volume, the laminate of the substrate with the ink-receiving porous polymer coating layer having a thermal conductivity of 0.25 W/(m.K) or less, as determined by the laser flash method.
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: May 20, 1997
    Assignees: New OJI Paper Co., Ltd., Asahi Denka Kogyo K.K.
    Inventors: Masakazu Hakomori, Masatosi Maeda, Yoshio Mizuhara, Miwa Kimura, Toru Nakai, Kosuke Asaeda, Tadahiro Nakada, Masasi Oka