Image forming apparatus and method
US5502550A · kind A · utility
14Cited by
20References
44Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1994 |
| Grant date | Mar 26, 1996 |
| Priority date | — |
| Expiry date | Dec 30, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2215/0082
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention has an object to provide an image forming apparatus and method which enables an operator to easily adjust to the desired printing density. A paper feeding roller is driven in timing along with a registration roller. The irradiation of a modulated laser beam is started, a developing high-voltage is changed from "0" V to a predetermined voltage V1, and the voltage is changed to V2 at other timings. By sequentially changing the voltage in this manner, the printing densities from laser modulating data d1 to d10 are adjusted and printing in different densities can be performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.