Title:
METHOD OF PRODUCING FILM MARK FOR INSPECTING RADIATION TRANSMISSION
Document Type and Number:
Japanese Patent JP2002131853
Kind Code:
A
Abstract:
To provide a method of producing a film mark which is easy for maintaining and fixing.
Characters or the like 2a comprising a character or a mark are marked on a shielding sheet 12 by at least a partial removal of a radiation shielding material-containing layer 12a to a flexible shielding sheet 12 having at least the radiation shielding material-containing layer 12a. Laser beams, water jet or a cutting die can be used as a marking means for the characters or the like 2a and the radiation shielding material-containing layer 12a is removed by these means. A lead sensitive paper having a lead layer 12a and a supporting sheet 12b can be used as the shielding sheet 12 and a plurality of these sheets may be stacked.
Inventors:
IGARASHI MIKIO
YAMAUCHI SHINYA
YAMAGUCHI NORIO
YAMAUCHI SHINYA
YAMAGUCHI NORIO
Application Number:
JP2000320442A
Publication Date:
May 09, 2002
Filing Date:
October 20, 2000
Export Citation:
Assignee:
NIKKI CONSTRUCTION CO LTD
NON DESTRUCTIVE INSPECTION CO
NON DESTRUCTIVE INSPECTION CO
International Classes:
G01N23/04; G03B42/02; G03C11/02; G21C17/003; (IPC1-7): G03B42/02; G03C11/02
Attorney, Agent or Firm:
Koji Kitamura
Previous Patent: DOCUMENT PRESSING PLATE
Next Patent: APPARATUS OF READING RADIATION IMAGE INFORMATION
Next Patent: APPARATUS OF READING RADIATION IMAGE INFORMATION