Method of manufacturing image forming apparatus
US6822397B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 2003 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | May 11, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0693
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to the adjustment of luminance. The present invention is a method of manufacturing image forming apparatus including a step of applying characteristic shift voltage comprising a plurality of pulses in which the amplitude of the pulse obtained from the look-up table has two or more values, to the emitter, the look-up table storing the amplitude of the pulse and the number of the pulse for shifting characteristic of emitters to a predetermined luminance target value on the basis of the measurement result of the luminance. Moreover, the present invention is a method of manufacturing image forming apparatus comprising a step of applying the second pulses of characteristic shift voltage having the amplitude which was determined in response to the measurement result of the luminance after the first characteristic shift voltage had been applied to the emitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.