Conversion Screens For The Conversion Of The Spatial Distribution Of X-rays Or Particle Radiation Into Visible Images (e.g., Fluoroscopic Screens) [g21k-4/00] *** (photographic Processes Using X-ray Intensifiers G03c-5/17; Discharge Tubes Comprising Luminescent Screens H01j-1/62; Cathode-ray Tubes For X-ray Conversion With Optical Output H01j-31/50) Patents (Class 976/DIG439)
  • Patent number: 5707548
    Abstract: A storage phosphor material comprising a storage phosphor of the kind in which electrons excited by incident ionizing radiation may be trapped in stable trap sites and subsequently released by stimulation such as photostimulation, wherein the phosphor is contained within a host matrix which comprises a sol-gel glass in which the storage phosphor is incorporated as a dopant.
    Type: Grant
    Filed: October 6, 1995
    Date of Patent: January 13, 1998
    Assignee: British Nuclear Fuels plc
    Inventors: Terence Alan King, Stephen Shuttleworth, Sven Glyn Roden
  • Patent number: 5653830
    Abstract: A phosphor screen with a smooth-surfaced phosphor layer is formed by casting a phosphor layer in liquid form on a sheet to which the layer adheres without bonding. The exposed surface of the layer is then solidified and bonded to a permanent substrate. The sheet on which the phosphor has been cast is then removed, leaving a smooth exposed surface, which may then be covered with a transparent protective layer.
    Type: Grant
    Filed: June 28, 1995
    Date of Patent: August 5, 1997
    Assignee: Bio-Rad Laboratories, Inc.
    Inventors: Gordon E. Fleig, Donald E. Gueffroy
  • Patent number: 5306367
    Abstract: A process for preparing a radiation image storage panel having a support and a stimulable phosphor layer comprises the first step of forming a phosphor sheet comprising a binder and a stimulable phosphor and the second step of compressing the phosphor sheet on the support under heating up to a temperature of not lower than softening point or melting point of the binder, using a plurality of calender rolls giving different pressure, a combination of a calender roll and a pre-heating means, or a combination of a calender roll and a tension-applying means.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: April 26, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hideki Suzuki, Katsuhiro Kohda
  • Patent number: 5296341
    Abstract: A method for digital imaging employing a green light laser. The method comprises obtaining a digitized picture image, modulating a green light laser beam in accord with the digitized picture image, and directing the modulated laser beam onto film that is sensitive to green-blue light. The film is then developed to create a gray-scale image useful in radiography and other imaging fields.
    Type: Grant
    Filed: June 24, 1992
    Date of Patent: March 22, 1994
    Assignee: Lumisys, Inc.
    Inventor: Bala S. Manian