Electric lamp and discharge devices – Electrode and shield structures – Cathodes containing and/or coated with electron emissive...
Patent
1975-09-18
1978-01-17
Chatmon, Jr., Saxfield
Electric lamp and discharge devices
Electrode and shield structures
Cathodes containing and/or coated with electron emissive...
252501, 313 74, 250213VT, 427 76, 250215, H01J 114, H01J 1906, H01K 104
Patent
active
040694380
ABSTRACT:
A device for the electrostatic recording of x-ray images comprises two spaced electrodes with a gas-filled gap therebetween. One of the electrodes comprises a layer of an ultraviolet emitting fluorescent material and a layer of an air-exposable ultraviolet-sensitive photoemitting material. A plastic sheet is adjacent to the other electrode. An electric field is applied across the gap to accelerate photoelectrons emitted by the photoemitting material. The electrostatic image formed on the plastic sheet is developed xerographically after the exposure.
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Houston John M.
Whetten Nathan R.
Young James R.
Chatmon, Jr. Saxfield
Cohen Joseph T.
General Electric Company
Haken Jack E.
Squillaro Jerome C.
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