Presentation Technologies, Inc.

Walter Conti

Philip G Baker

Aleksey Novicov

Paul N Barsley

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.

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Palo Alto, CA, United States of America

Walter Conti