Plotter having a concave platen

Details Plotter having a concave platen Plotter having a concave platen

1980-10-31

1983-01-18

Pellinen, A. D.

Recorders

Record receivers and/or driving means therefor

Web

346114, G01D 1524

Patent

active

043694535

ABSTRACT:
A moving-medium XY plotter is provided with a platen which has a concave surface extending uniformly in the direction of pen motion. A drive roller and pinch roller assembly located near the bottom of the concavity provides the motion of the recording medium orthogonal to the pen motion, while at the same time curving the recording medium into the shape of a trough. This curvature stabilizes the motion of the recording medium by significantly enhancing its resistance to compressional buckling and ensures that the recording medium, as a result of its natural stiffness, will firmly contact the platen where writing is to occur.

REFERENCES:
patent: 2805912 (1957-09-01), Graybeal
patent: 3650448 (1972-03-01), Jarmy
patent: 4038666 (1977-07-01), Fuller, Jr.
patent: 4168506 (1979-09-01), Corsover
patent: 4178601 (1979-12-01), King

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