Film recorders:

Film recorders are instruments designed to write digital data
directly to photographic paper or film.  In most contemporary
systems, the film is mounted on a cylindrical drum which spins
rapidly during the printing operation.  The beam of light that
prints the data to the photo sensitive surface varies its
intensity in proportion to the image brightness.  As the drum
spins, the light slowly moves the length of the image.  This
process is repeated line by line until the entire image is
exposed.  For color images, the exposure is made in three parts,
one each for red, green, and blue (the primary colors of the RGB
separation).  Film negatives, positives (slides), and
photographic prints can all be produced by the current generation
of film recorder devices.  Image resolutions ranging from 200 to
3000 lines per inch are attainable with contemporary systems.

<cfile65>   Data Output