Electron source and image forming apparatus as well as method of

Details Electron source and image forming apparatus as well as method of Electron source and image forming apparatus as well as method of

1995-10-17

2000-12-12

Ramsey, Kenneth J.

Electric lamp and discharge devices

Having valve with getter, gas/vapor generating material or...

445 6, 445 51, 313346R, H01J 130

Patent

active

061603473

ABSTRACT:
An electron source comprises one or more electron-emitting devices, especially of surface conduction type, and is provided with means for supplying an activating substance to the device(s). The means comprises preferably a substance source and a heater or electron beam generator for gasifying the substance source. The electron source can be combined with an image-forming member (e.g. fluorescent body) to constitute an image-forming apparatus. The means is used for in situ activation or re-activation of the electron-emitting device(s).

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