EP 0350359 B1 19930825 - METHOD FOR MAKING AN X-RAY IMAGE INTENSIFIER TUBE, IMAGE INTENSIFIER TUBE SO OBTAINED
Title (en)
METHOD FOR MAKING AN X-RAY IMAGE INTENSIFIER TUBE, IMAGE INTENSIFIER TUBE SO OBTAINED
Publication
Application
Priority
FR 8809310 A 19880708
Abstract (en)
[origin: JPH0268832A] PURPOSE: To prevent spurious emission in an X-ray image multiplying tube by evaporating a conductive material. layer made of an organic polymer having characteristics of chemically reacting with alkaline metal on the electrode nearest to an anode out of electrodes. CONSTITUTION: Prior to the manufacture of a cathode through the evaporation of antimony and alkaline metal and subsequent insertion thereof into an X-ray image multiplying tube, a conductive material, layer made of an organic polymer having characteristics of chemically reacting with alkaline metal is evaporated on at least a part of the electrode nearest to an anode out of electrodes. Specifically, an electrode G3 is coated with a polymer layer 8 prior to its insertion into the tube. The electrode G2 may be coated totally or partly at its region which is most liable to cause spurious emission to thereby prevent its spurious emission.
IPC 1-7
IPC 8 full level
H01J 9/12 (2006.01); H01J 9/14 (2006.01); H01J 29/62 (2006.01); H01J 31/50 (2006.01)
CPC (source: EP US)
H01J 9/12 (2013.01 - EP US); H01J 9/14 (2013.01 - EP US); H01J 31/501 (2013.01 - EP US); H01J 2201/32 (2013.01 - EP US); H01J 2201/3426 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0350359 A1 19900110; EP 0350359 B1 19930825; DE 68908637 D1 19930930; DE 68908637 T2 19931223; FR 2634057 A1 19900112; FR 2634057 B1 19910419; JP H0268832 A 19900308; US 4943254 A 19900724
DOCDB simple family (application)
EP 89401743 A 19890620; DE 68908637 T 19890620; FR 8809310 A 19880708; JP 17696089 A 19890707; US 37599789 A 19890706