Chart recorders
AssigneeABB Kent-Taylor Limited
InventorUmar Qureshi
Life of this patent
Estimating the term…
Abstract
A chart recorder method and apparatus wherein a recording head records a plurality of different colored line segments on a recording medium, a head drive moves the recording head and the recording medium reciprocally relative to each other in a scanning direction, a recording medium drive moves the recording medium and the recording head relative to each other in a sub-scanning direction, a component receives a plurality of signals to be recorded on the recording medium as a corresponding plurality of traces to be recorded by the recording head, and a control circuit controls the recording head so that at least one of the traces is formed by line segments which change color cyclically.
Claims7
A chart recorder comprising:
- a recording head to record a plurality of different colored line segments on a recording medium;
- a head drive for moving the recording head and the recording medium reciprocally relative to each other in a scanning direction;
- a recording medium drive for moving the recording medium and the recording head relative to each other in a sub-scanning direction;
- and
- means for receiving a plurality of signals to be recorded on the recording medium as a corresponding plurality of traces to be recorded by the recording head;
- characterised by:
- a control circuit to control the recording head so that at least one of the traces is formed by line segments which change color cyclically.
A chart recorder comprising;
- means for recording a plurality of visually-differentiated traces on a recording medium;
- and control means for causing at least one of the traces to be formed by the recording means in successive cyclically repeating line segments of at least two visually-distinguishable types.
Dependencies are inferred from the claim text.