Internal drum plotter

G - Physics – 01 – D

Patent

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Details

G01D 9/00 (2006.01) B41B 21/16 (2006.01) G01D 15/14 (2006.01) G11B 7/0025 (2006.01) H04N 1/04 (2006.01) H04N 1/047 (2006.01) H04N 1/06 (2006.01) H04N 1/191 (2006.01) H04N 1/192 (2006.01)

Patent

CA 2127137

ABSTRACT An internal drum plotter including apparatus for mount ing a recording substrate in a generally cylindrical configura- tion about a longitudinal axis, a multi-beam light source assem- bly disposed at a first location along the longitudinal axis, and including a plurality of light sources which are separated from each other along an axis perpendicular to the longitudinal axis, light directing apparatus operative to direct light received from the multi-beam light source assembly to the recording substrate and apparatus for transmitting light from said multi-beam light source assembly to said light directing apparatus substantially without inaccuracies which are functions of the period of rota- tion of the light directing apparatus about the longitudinal axis.

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