Sheet length counter for plotter

Details Sheet length counter for plotter Sheet length counter for plotter

1996-08-30

1999-12-28

Fulton, Christopher W.

Geometrical instruments

Scriber

33 324, 33 326, 33773, B43L 1300

Patent

active

060064366

ABSTRACT:
An engineering drawing plotter includes a feed roller for moving paper lengthwise bidirectionally with respect to one or more plotting pens. A counter installed on the plotter includes a pulse switch for measuring absolute lengthwise paper displacement, a direction transducer for determining paper movement direction, and a counter responsive to the measuring device and direction indicating device, for determining and displaying cumulative net paper displacement.

REFERENCES:
patent: 3739276 (1973-06-01), Dornberger
patent: 4970802 (1990-11-01), Nosek
patent: 5182861 (1993-02-01), Suzuki et al.
patent: 5218769 (1993-06-01), Tranchon
patent: 5577330 (1996-11-01), Cheng

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