Spacer structure for image forming apparatus

Details Spacer structure for image forming apparatus Spacer structure for image forming apparatus

2005-11-29

2008-11-11

Guharay, Karabi (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

C313S292000

Reexamination Certificate

active

07449827

ABSTRACT:
In a spacer having concave/convex portions to prevent short-time charging in a flat type image forming apparatus in which an electron source substrate and an anode substrate are arranged so as to face each other through the spacer, the charging upon long-time driving due to the concave/convex portions is suppressed. In the spacer in which the surface of an insulating substrate having a rough surface is coated with a high resistance film, the high resistance film has double layers of a low resistance region locating on the substrate side and a high resistance region locating on the front surface side, and a thickness (t) of high resistance film on the slant surface of each of the concave/convex portions and a thickness (s) of high resistance region are set to (t≧dp+λ≧s) for the primary electron penetration length (dp) and the ionization electron diffusion length (λ).

REFERENCES:
patent: 5939822 (1999-08-01), Alderson
patent: 6353280 (2002-03-01), Shibata et al.
patent: 6600263 (2003-07-01), Ito
patent: 6809469 (2004-10-01), Ito et al.
patent: 6963159 (2005-11-01), Fushimi
patent: 2003/0141803 (2003-07-01), Fushimi
patent: 2000-311632 (2000-11-01), None
Grais, K. et al., “A Study of Secondary Electron Emission in Insulators and Semiconductors,”J. Appl. Phys., vol. 53, No. 7, pp. 5239-5242 (1982).
European Communication and Search Report dated Apr. 28, 2008, regarding Application No. 05026405.0-2208.

Affiliated with

Also associated with

Rating

Spacer structure for image forming apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spacer structure for image forming apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spacer structure for image forming apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4037363