Registration system for a moving substrate

Details Registration system for a moving substrate Registration system for a moving substrate

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.

REFERENCES:
patent: 2250209 (1939-11-01), Shoults et al.
patent: 3427463 (1969-02-01), Weyrauch
patent: 3781490 (1973-12-01), Phillips
patent: 3835297 (1974-09-01), Inoue et al.
patent: 4079252 (1978-03-01), Brake
patent: 4363271 (1982-12-01), Horst
patent: 4385836 (1983-05-01), Schmitt
patent: 4485982 (1984-12-01), St. John et al.
patent: 4569584 (1986-02-01), St. John et al.
patent: 4641070 (1987-02-01), Pfizenmaier et al.

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