G - Physics – 05 – B
Patent
G - Physics
05
B
342/5
G05B 17/00 (2006.01) B41C 1/14 (2006.01)
Patent
CA 1039385
ABSTRACT OF THE DISCLOSURE Apparatus for electrically burning information from an original document into stencil material including a stylus for applying electrical pulses to the material and a circuit comprising an optical sensor for scanning information on the original and providing an output signal, the amplitude of which is proportional to the light reflected by the information, a circuit for providing a pulse train whose characteristics are related to the nature of the stencil material and the output signal and applying that pulse train to the stylus, means for selectively setting the minimum and maximum amplitudes of the output signals from the optical sensor for tones to be reproduced as black and white, respectively, are provided whereby the user may position the optical sensor adjacent information representing alternatively black and white and manually adjust and set the output current to the stylus.
235595
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