Patents Represented by Law Firm Birch, Stewart, & Birch, LLP
  • Imaging materials
    Patent number: 6093529
    Abstract: An imaging material is provided in the form of a photothermographic or thermographic image forming layer containing an organic silver salt on one surface of a support and further comprising a polyvalent metal ion and a phthalic acid compound on the image forming layer-bearing surface of the support. The imaging material has improved shelf stability before and after image formation and the ease of handling and produces high-quality blue black tone images.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: July 25, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hirohiko Tsuzuki, Hisashi Okamura, Itsuo Fujiwara, Yoshiharu Yabuki, Masaki Noro