Stray light baffle for internal drum scanner
US6459445B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2000 |
| Grant date | Oct 1, 2002 |
| Priority date | — |
| Expiry date | Nov 22, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/127
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical scanner assembly exposes an image on photosensitive media positioned on the internal surface of a drum platen. The assembly includes: a laser assembly for producing a laser beam representative of the image to be exposed on photosensitive media; a semi-circular flexible lens curved to the shape of the photosensitive media positioned on the internal surface of the drum platen, the lens having a plano-convex cylinder lens having a convex side facing the media; a laser beam scanner positioned between the laser assembly and the lens to scan the laser beam through the lens across the media in an image-wide pattern; and a baffle located between the scanner and the lens for extinguishing laser beam reflections from the convex side of the lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.