Photofinishing utilizing modulated light source array
US6163363A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Dec 29, 1998 |
| Grant date | Dec 19, 2000 |
| Priority date | — |
| Expiry date | Dec 29, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/1252
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital photograph printer comprising a transport mechanism, a modulated light source (1206), and an exposure controller (1302). The transport mechanism for advancing a photosensitive medium (1202) through an exposure region (1200) such that said photosensitive medium advances one row of pixel locations each row period. The modulated light source (1206) is operable to selectively provide a beam of light to an array of individually modulated regions (1300, 1306, 1310) in an exposure region (1200). As the photosensitive medium (1202) moves through the exposure region (1200) the individually modulated regions in the exposure region (1200) have the opportunity to expose each pixel locations in the exposure region (1200) once each row period. The exposure controller (1302) operable to control the modulated light source (1206) based on image data provided to modulated light source. The image data comprises optical density data for each pixel in an image to be formed on the photosensitive medium for each of at least three primary colors. The controller selectively exposes the photosensitive medium at a number of exposure opportunities, each selective exposure performed for a period no g…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.