Variable Reduction Optical Drive System
Original Publication Date: 1979-Feb-01
Included in the Prior Art Database: 2005-Feb-19
In a copier scanning system capable of adjusting to different reduction ratios from original to copy, it is necessary to change the drive speed of the scanning apparatus in addition to changing the optical system conjugates. Shown above is a drive system utilizing a cam with a continuous contour, whereby drive speed for the optical system and thus the reduction ratio may be continuously varied.