Radiographic flat panel detector having a ferromagnetic layer and the method of production thereof

Patent metadata

Field	Value
Publication number	US-9831007-B2
Application number	US-201515303757-A
Country	US
Kind code	B2
Filing date	Apr 17, 2015
Priority date	Apr 28, 2014
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

A radiographic flat panel detector includes a layer configuration in the order given: a) a radiation transparent substrate; and b) a scintillator layer applied by vapor deposition on the radiation transparent substrate; and c) an imaging array between the scintillator layer and a second substrate, characterized in that the radiation transparent substrate has on a side a layer including magnetisable particles and a method for producing the radiographic flat panel detector.

First claim

The invention claimed is:

1. A method for producing a radiographic flat panel detector comprising the steps of:
providing a radiation transparent substrate with a layer including magnetizable particles;
contacting the radiation transparent substrate including the layer including magnetizable particles with a surface of a substrate supporting body positioned between one or more magnets and the radiation transparent substrate;
applying a scintillator layer on the radiation transparent substrate by vapour deposition while the radiation transparent substrate is fixed by magnetic forces to the substrate supporting body; and
bonding a surface of the scintillator layer that is not in contact with the radiation transparent layer to an imaging array that is provided on a second substrate.

2. The method for producing a radiographic flat panel detector according to claim 1 , wherein the layer including magnetizable particles is coated from a dispersion including magnetizable particles and a binder.

3. The method for producing a radiographic flat panel detector according to claim 1 , wherein, prior to the step of contacting:
applying a light reflecting layer onto a side of the radiation transparent substrate.

4. The method for producing a radiographic flat panel detector according to claim 2 , wherein, prior to the step of contacting:
applying a light reflecting layer onto a side of the radiation transparent substrate.

5. The method for producing a radiographic flat panel detector according to claim 1 , wherein, prior to the step of contacting:
applying an adhesion promoting layer onto a side of the radiation transparent substrate.

6. The method for producing a radiographic flat panel detector according to claim 1 , wherein the step of bonding is performed by melting a hot melt resin layer between the scintillator layer and the imaging array.

Assignees

• Agfa Healthcare Nv

Inventors

• Leblans Paul
• Struye Luc
• Mans Ilse
• Elen Sabina

Classifications

• G21K2004/04

  with an intermediate layer · CPC title

• B32B37/18

  involving the assembly of discrete sheets or panels only · CPC title

• C09K11/616

  with alkali or alkaline earth metals · CPC title

• G21K4/00 Primary

  Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens (photographic processes using X-ray intensifiers G03C5/17; discharge tubes comprising luminescent screens H01J1/62; cathode ray tubes for X-ray conversion with optical output H01J31/50) · CPC title

• B32B2323/04

  Polyethylene · CPC title