Production method of radiation image detector and radiation image detector

A production method of a radiation image detector comprising a scintillator panel which is provided with a scintillator layer on a substrate, a rigid plate which is disposed on a side of the substrate of the scintillator panel and a photoelectric conversion base plate which is disposed on a side of the scintillator layer of the scintillator panel and in which plural photoelectric conversion elements are disposed on a one side of a base board, the method comprising:

• (1) a scintillator panel preparation step of forming a scintillator layer on the substrate to prepare the scintillator panel,
• (2) a composite rigid plate preparation step of bonding a flexible polymer film to the rigid plate with an adhesive to prepare a composite rigid plate,
• (3) a preparation step of a scintillator panel provided with a composite rigid plate of opposing a surface of the composite rigid plate opposite the flexible polymer film to a surface of the scintillator panel opposite the scintillator layer on the substrate, and bonding the composite rigid plate to the scintillator panel to prepare the scintillator panel provided with a composite rigid plate, and
• (4) a preparation step of a radiation image detection member of opposing a surface of the photoelectric conversion base plate in which the photoelectric conversion elements are disposed to a surface of a side of the scintillator layer of the scintillator panel provided with a composite rigid plate, and bonding the photoelectric conversion base plate to the scintillator panel provided with a composite rigid plate to prepare a radiation image detection member.