Image forming apparatus
US6104136A · kind A · utility
16Cited by
5References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1997 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | Dec 22, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2329/8645
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An image forming apparatus includes a vacuum envelope and an electron emission element, an image forming member and a spacer disposed within the vacuum envelope. The spacer, which is disposed between electrodes to which mutually different voltages are applied within the vacuum vessel, has semiconductivity on a surface thereof faced to vacuum and a conductive member arranged to encircle the surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.