Image forming apparatus that forms image using a plurality of light beams
US9658559B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 12, 2015 |
| Grant date | May 23, 2017 |
| Priority date | — |
| Expiry date | May 12, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/113
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A determination unit determines a bias current caused to flow through at least plurality of light-emitting portions regardless of image data during an image period by determining a first drive current for setting a light quantity of a light beam incident on a light reception unit during the non-image period to a first target light quantity, and determining a second drive current for setting a light quantity of a light beam incident on the light receiving unit to a second target light quantity that is different from the first target light quantity. The determination unit determines a drive current for performing switch-driving of the plurality of light-emitting portions, based on image data, the drive current corresponding to the first drive current and the bias current upon the image data being generated in a second section of a non-image period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.