Photoelectron generating plate, negative particle generating...

Details Photoelectron generating plate, negative particle generating... Photoelectron generating plate, negative particle generating...

2004-01-14

2010-11-30

Jackson, Stephen W (Department: 2836)

Electricity: electrical systems and devices

Discharging or preventing accumulation of electric charge

By charged gas irradiation

C361S231000, C361S230000

Reexamination Certificate

active

07843678

ABSTRACT:
The photoelectron generating plate includes on a substrate a photoelectron emission layer for emitting photoelectrons by the illumination of the light and having a barrier property. A diffusion of a material of an underlying base member into the photoelectron emission layer is blocked by the barrier layer and thus the surface of the photoelectron emission layer is prevented from being coated by the material of the base member. As a result, temporal reduction in the number of generated negative ions can be considerably ameliorated. In other words, the charge removing device attains a good durability for a long time.

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Korean office action dated Mar. 24, 2010 in corresponding Korean Application No. 10-2004-0003249.

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