Pen operability checking system for vector plotters

Details Pen operability checking system for vector plotters Pen operability checking system for vector plotters

1992-05-05

1995-04-04

Powell, Mark R.

Recorders

Record receiver deforming

346139R, G05B 100

Patent

active

054044251

ABSTRACT:
Apparatus and an associated method for ascertaining the operational status of a pen in a vector plotter in which a pen is moved into contact with a paper web at a test location, the pen is moved relative to the web and an optical detector is used to determine whether or not the pen is drawing a line on the web. The web is moved from a supply roll to a take-up roll to move the test area on the web to an optical testing location. The absence of a line after a pre-determined period of web movement time signals the inoperative status of the pen and the detection of a line by the pen within that pre-determined period of movement time signals that the pen is operative. Quality and proper line width of the line can also be determined.

REFERENCES:
patent: 5170047 (1992-12-01), Beauchamp et al.
patent: 5261038 (1993-09-01), Adroher et al.
patent: 5262797 (1993-09-01), Boeller et al.

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