Printer head biasing apparatus

Details Printer head biasing apparatus Printer head biasing apparatus

1979-02-09

1980-10-14

Miller, Jr., George H.

Recorders

Markers and/or driving means therefor

Stylus feature

346 76PH, G01D 1516

Patent

active

042284414

ABSTRACT:
In a chart recorder where a print head is used to record data on a moving strip of chart paper, an improved apparatus for biasing the print head against the moving chart paper. The biasing apparatus provided includes a cantilevered leaf spring to maintain a constant and preset pressure between the print head and the moving chart paper. The distal or fixed end of the leaf spring is anchored to the frame of the chart recorder and the print head is mounted on the free end of the cantilevered leaf spring so that the leaf spring maintains a constant pressure between the print head and the moving chart paper. The cantilevered spring is adjustable to provide the desired amount of pressure between the print head and the moving chart paper. When a new roll of chart paper is inserted into the chart recorder, the cantilever spring re-establishes and maintains the pressure between the print head and the new roll of chart paper.

REFERENCES:
patent: 3187332 (1965-06-01), Barter et al.
patent: 3312980 (1967-04-01), Erbach
patent: 3346871 (1967-10-01), Fowler
patent: 4085407 (1978-04-01), Stratbucker et al.

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