Patents Assigned to Fuji Photo Co., Ltd.
  • Patent number: 4591714
    Abstract: A light guide member comprises three optical blocks. The first optical block is provided with a light input face positioned close to and approximately in parallel with a stimulable phosphor sheet carrying a radiation image stored therein, and a light output face parallel with the light input face. The second optical block is provided with a light input face slightly spaced apart from the light output face of the first optical block, a dichroic optical plane extending upward from one end of the light input face at an angle of approximately 45.degree., and a light output face extending downward from an upper end of the dichroic optical plane. The dichroic optical plane transmits stimulating rays and reflects light emitted by the stimulable phosphor sheet upon exposure to stimulating rays.
    Type: Grant
    Filed: March 13, 1985
    Date of Patent: May 27, 1986
    Assignee: Fuji Photo Co., Ltd.
    Inventors: Chiaki Goto, Kazuo Horikawa, Masaru Noguchi
  • Patent number: 4482578
    Abstract: A method for preparing a magnetic recording medium comprising a non-magnetic support having coated thereon a magnetic layer containing plate-shaped ferromagnetic fine particles oriented perpendicular to a plane of the surface of the support, the process comprising the steps of:coating the non-magnetic support with a coating composition wherein ferromagnetic fine particles are dispersed in a solution comprised of a compound polymerizable by radiation with electron beams and a solvent, said particles being plate-shaped and having an axis of easy magnetization perpendicular to a plane of the plate-shaped particles;orienting the ferromagnetic fine particles perpendicular to the surface of support while the coating composition is undried;radiating the composition with electron beams; anddrying the composition by removing the solvent.
    Type: Grant
    Filed: June 17, 1983
    Date of Patent: November 13, 1984
    Assignee: Fuji Photo Co., Ltd.
    Inventors: Goro Akashi, Tatsuji Kitamoto, Tsutomu Okita
  • Patent number: 4474871
    Abstract: A method for processing a silver halide photographic material having at least one silver halide emulsion layer on at least one side of a support is disclosed. The method is characterized by pretreatment with a solution carried out prior to a development-processing. The solution being substantially unable to cause a development reaction though it contains a developing agent. The method improves the covering power of developed silver without deteriorating the physical properties of the silver halide photographic material.
    Type: Grant
    Filed: January 27, 1983
    Date of Patent: October 2, 1984
    Assignee: Fuji Photo Co., Ltd.
    Inventors: Akira Hatakeyama, Takashi Naoi, Sumitaka Tatsuta