公开(公告)号：JPH0854500A

公开(公告)日：1996-02-27

申请号：JP5945695

申请日：1995-03-17

Applicant: BIO RAD LABORATORIES

Inventor： GOODON II FUREIGU ,  DONARUDO II GEFUROI

IPC: G21K4/00

Abstract: PURPOSE: To provide a phosphor image screen of high sensitivity to the light and the weak β rays, by installing a phosphor layer including accelerated phosphor on a base, and coating the surface of the layer with a protective coating composed of a para-xylylen polymer of a specific formula. CONSTITUTION: An optionally substituted para-xylylen polymer represented by the formula, is used as a protective coating. (In the formula, R1, R2, R3 and R4 are independently selected from a group of H, alkyl, aryl, heteroaryl, alkenyl, cyano, alkoxyl, hydroxyl, aryloxyl, carboxyl, carboxyalkyl, carboxyaryl, halogen, amino and nitro. The n is not less than 1000.) The thickness of the protective coating is 25-50μm in the desirable operating condition, and 0.10-10μm in the other condition. The image of high sensitivity, contrast and reproducibility can be obtained by the comparatively short irradiation time by using this phosphor screen.

公开(公告)号：JPH09113698A

公开(公告)日：1997-05-02

申请号：JP17021296

申请日：1996-06-28

Applicant: BIO RAD LABORATORIES

Inventor： GOODON II FURIIGU ,  DONARUDO II GEFUROI

IPC: G21K4/00 ,  H01J9/22

Abstract: PROBLEM TO BE SOLVED: To provide a phosphor screen having flat and smooth surface on which an image data can be recorded clearly with high sensitivity. SOLUTION: A flat and smooth sheet 12 is coated with phosphor in liquid state and laminated under adhesive state without bonding. The phosphor layer 21 is then hardened with the sheet 12 being set on the underside and a board 30 is bonded to the exposed surface 36. The sheet 12 laminated on the phosphor layer 21 is then removed to finish a smooth exposed surface. It is coated, as required, with a transparent protective layer. Since phosphor particles are collected on the flat and smooth surface and no particle project from the surface, the screen is useful for recording a data clearly with high sensitivity.