Apparatus and method for exposing photosensitive recording media with digital image data
US4943861A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1987 |
| Grant date | Jul 24, 1990 |
| Priority date | — |
| Expiry date | Mar 3, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/40025
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method are provided for recording images on photon sensitive recording media (20) which includes a source (12) of image pixel data in digital form having a multiplicity of possible intensity values, a photon generator 16 for exposing the photon sensitive recording media at a fixed intensity level, and a controller (24, 22, 14) for controlling the amount of time of exposure of the recording media in correspondence with the pixel data intensity values from the source. Previously known apparatus either have problems producing clearly distinguishable shades of gray on the recording media or else require much more expensive technology. The most likely applications are the production of hard copy from medical imaging data where clarity and detail are the most important consideration. Other applications may prove feasible with any form of digitizable image data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.