Patents Examined by Marie R. Machoil
  • Information recording medium including an organic polysilane and an oxo metallic phthalocyaning
    Patent number: 5264266
    Abstract: An information recording medium comprises a recording layer including a mixture of organic polysilane and oxo metallic phthalocyanine pigment. Information is recorded by adding heat or light to the recording layer. In a method for recording information onto the information recording medium, a decoloring reaction of oxo metallic phthalocyanine pigment is used which is caused by heating the recording layer to a temperature equal to or higher than a pyrolyzing point of organic polysilane.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: November 23, 1993
    Assignee: Mita Industrial Co., Ltd.
    Inventors: Masaaki Yokoyama, Mikio Kakui