Sensor for sensing media in a plotter

Details Sensor for sensing media in a plotter Sensor for sensing media in a plotter

1991-05-02

1992-11-03

Evans, Arthur G.

395103, G06K 1500

Patent

active

051612461

ABSTRACT:
This invention is directed to the use of single optical sensor to replace two mechanical sensors in a pen plotter. A light beam is directed through a slot in the plotter's main platen. The light beam is detected to provide a signal output. Servo fan motors of the plotter are turned on when the light beam is broken by media placed into the plotter for plotting as one function. A load sequence of the plotter is started only after a start command is input by a user through a control console and the light beam is broken by media placed into the plotter for plotting as a second function.

REFERENCES:
patent: 4630814 (1986-12-01), Kowakubo et al.
patent: 4998216 (1991-03-01), Hino et al.

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