Patent ID: 6407767
Filing Date: 2002-06-18
Classification: G03B,G03C

Abstract:
Apparatus for exposing a reference calibration patch onto photosensitive medium, the reference calibration patch including a plurality of exposed elements, comprising:a) a light source; b) a plurality of optical fibers, one fiber for each element to be exposed; c) a light collector having an input port for receiving light emitted by the light source and an output port for delivering light to one end of the optical fibers; d) a plurality of light attenuators located with respect to the optical fiber for individually attenuating the light transmitted by each fiber; e) a projection print head located at the other end of the optical fibers for directing light from the fibers onto the photosensitive medium; and f) a controller connected to the light source for measuring and controlling the light output of the light collector.