Scanning apparatus having a cascade scanning optical system
US5909300A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1997 |
| Grant date | Jun 1, 1999 |
| Priority date | — |
| Expiry date | Dec 31, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a scanning apparatus having a cascade scanning optical system. The scanning apparatus includes: a first laser scanning optical system for deflecting a first scanning laser beam to scan a scanning surface to generate a first scanning line; a second laser scanning optical system for deflecting a second scanning laser beam to scan the scanning surface to generate a second scanning line, wherein the first and second laser scanning optical systems are arranged so as to align the first scanning line with the second scanning line in a main scanning direction to form a single scanning line, with opposing ends of the first and second scanning lines overlapping each other by a predetermined amount; and a device for delaying the commencement of the writing of each scanning line made by the second laser scanning optical system with respect to the commencement of the writing of each scanning line made by the first laser scanning optical system so as to align the first scanning line with the second scanning line at a point of contact therebetween in the main scanning direction without the first scanning line overlapping the second scanning line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.