Image forming apparatus

Details Image forming apparatus Image forming apparatus

2007-07-24

2007-07-24

Gandhi, Jayprakash (Department: 2809)

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

C313S495000, C313S292000, C313S496000, C313S586000, C445S024000, C345S212000

Reexamination Certificate

active

11280312

ABSTRACT:
In an image forming apparatus utilizing an electron emitting device, a guard electrode for preventing a creepage discharge from an anode electrode is provided without causing an abnormal discharge with a spacer. A guard electrode positioned at a predetermined distance (x) from a metal back constituting an anode electrode is positioned at such a distance (Lg) from a spacer as not to cause a discharge according to a ratio (x/hs) of the distance x and a height (hs) of a spacer.

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