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.
Type:
Grant
Filed:
September 11, 1987
Date of Patent:
July 12, 1988
Assignee:
Presentation Technologies, Inc.
Inventors:
Philip G. Baker, Walter Conti, Aleksey Novicov, Paul N. Barsley
Abstract: The present invention provides an alignment method and cartridge apparatus for an apparatus for generating color text and graphics on photographic media. The cartridge has flanges which project therefrom and which interact with projections on the apparatus to guide the cartridge into secure and consistent alignment. A driving means and locking means for maintaining the driving means in the disengaged position upon withdrawal of the cartridge is also provided. The driving means is preferably a motor connected to a pivoting bracket which has an engagement pin extending therefrom. Biasing means act to urge the driving means into the engaged position. The locking means is preferably a pivoting locking bar having a notch at one end which interacts with the engagement pin extending from the driving means bracket. An actuation pin extends from the pivoting locking bar and bias means act to urge the pivoting locking bar into engagement with the driving means.