Electron beam apparatus and image-forming apparatus

Details Electron beam apparatus and image-forming apparatus Electron beam apparatus and image-forming apparatus

H - Electricity

01

J

H01J 29/48 (2006.01) G06F 3/147 (2006.01) G09G 3/22 (2006.01) H01J 1/316 (2006.01) H01J 31/12 (2006.01) H04N 3/12 (2006.01)

Patent

CA 2126535

In an electron beam apparatus comprising an enclosure in which an electron-emitting device having an electron-emitting region between opposite electrodes is disposed, the electron-emitting device exhibits such a characteristic as that an emission current is uniquely determined with respect to a device voltage. The interior of the enclosure is maintained under an atmosphere effective to prevent structural changes of the electron-emitting device. An image-forming apparatus comprises an enclosure in which an electron source and an image-forming member are disposed, the electron source comprising the above electron-emitting device. An emission current is stable with a very small change in the amount of electrons emitted, a sharp image is produced with high contrast, and gradation control is easily carried out.

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