Servo for controlling document transport

Details Servo for controlling document transport Servo for controlling document transport

1991-02-04

1992-01-28

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250557, G01N 2186

Patent

active

050846264

ABSTRACT:
Disclosed are "anti-wander" web-transport arrangements wherein web-means are intermittently advanced, while being monitored for misalignment along the transport-path, and also being automatically urged back into proper alignment along this path.

REFERENCES:
patent: 4707599 (1987-11-01), Sherman et al.
patent: 5000088 (1991-03-01), Cargill

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