Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1988-05-20
1989-02-28
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
250237G, 250557, 356401, G01B 1100, G01N 2186, G05B 106
Patent
active
048088323
ABSTRACT:
A registration system is provided for maintaining accurate correspondence between an image on a moving substrate and the action of an operating element with respect to the substrate. A comparison optical device is mounted such that the timing marks pass in correspondence with the comparison optical device when the substrate is moving. A detector senses the intensity of radiation reflected from the substrate through the comparison optical device and generates a firing signal based on the reflected radiation intensity. The firing signal is provided to the operating element to activate it in correspondence to the passage of the timing marks.
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Synergy Computer Graphics Corp.
Westin Edward P.
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