Compact chart recorder

Details Compact chart recorder Compact chart recorder

1991-12-05

1994-07-12

Grimley, A. T.

Recorders

Markers and/or driving means therefor

With ink supply to marker

346 49, 346136, G01D 1516

Patent

active

053293037

ABSTRACT:
A chart recorder is described, of the type which includes a strip of pressure-markable chart paper (12, FIG. 1) that is slowly moved downpath past a marking station (30) where at least one stylus (32) presses against the chart strip to mark it, which is compact, reliable, and accurate. The marking station includes a first wide but thin belt (52) extending in a loop between a pair of rollers, with the stylus coupled to the belt so as the output of a temperature sensor turns the belt, the stylus moves across the width of the chart strip. A slider (82, FIG. 3 ) coupled to the stylus and belt, can slide along a lateral guide (90) that resists tilting of the slider, to thereby enable it to keep the stylus pressed against the chart strip. Where two styluses are used, a second independently driven belt is coupled to a second stylus with the second belt lying below the first one. A supply roll (20, FIG. 2) of chart strip can lie under a platen (26) against which the stylus presses, with the path of the chart strip extending upwardly from the storage station to the platen.

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