Apparatus for generating color text and graphics on photographic media
US4757333A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1987 |
| Grant date | Jul 12, 1988 |
| Priority date | — |
| Expiry date | Sep 11, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2217/243
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Apparatus for generating color slides or other photographic media containing character fonts and graphics images contains one or more character font sets on a transparent drum or disk carrier. Lines of text are entered by keyboard or the like into a data processor which stores them as character and position information. This information is then used to position and expose images of the selected characters from the carrier onto photographic media by use of a moveable lens and a shutter. An additional moveable drum or disk may be used to provide different background color as well as character color. By holding the shutter open while a character or arbitrary shape is illuminated, two-dimensional graphics image can be recorded on the photographic media by controlling the movement of the lens in two dimensions. A method is also provided for providing a continuously variable transmission of light through a liquid crystal shutter to control exposure of the photographic media.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.