Image forming apparatus and image forming method
US6603450B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1999 |
| Grant date | Aug 5, 2003 |
| Priority date | — |
| Expiry date | Jun 3, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/0275
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This invention suppresses power consumption in an image forming apparatus using an electron-emitting device.For this purpose, an image forming apparatus has a plurality of electron-emitting devices, a light-emitting substance for emitting light by irradiation of electrons emitted by the electron-emitting devices, a first potential application means for sequentially selecting the plurality of electron-emitting devices and applying, to a selected electron-emitting device, a predetermined potential different from a potential applied to an unselected electron-emitting device, and a second potential application means for applying a potential corresponding to an image signal to at least a selected electron-emitting device. In this image forming apparatus, when the light-emitting substance is not required to emit light by irradiation of electrons from the selected electron-emitting device, a voltage applied to the selected electron-emitting device is set around the threshold of emission/non-emission of the light-emitting substance by irradiation of electrons from the electron-emitting device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.