Synchronous adjustment method, apparatus, and computer program product in a multiple beam optical system
US6005243A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1998 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Mar 3, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04794
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method, system and computer-based product adjusts a synchronous operation of beams in scanning direction of a multiple beam optical system. Alternatively emitted, a standard beam and one of plural beams are scanned across an image forming body in respective scanning operations. During each scanning operation, a time interval (T1) is measured from when the standard beam is detected by a detector to when the other beam is detected. Similarly, another time interval (T2) is measured from between when the other beam is detected to when the standard beam is detected. Time intervals T1 and T2 are compared so as to distinguish the arrival order of beams and then the beams are adjusted at the source so as to compensate for a detected incorrect order or misalignment of the beams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.