Chart recorded having multiple thermal print heads

Details Chart recorded having multiple thermal print heads Chart recorded having multiple thermal print heads

1987-02-27

1988-04-19

Evans, Arthur G.

Recorders

Thermal recording

346139R, G01D11500

Patent

active

047393440

ABSTRACT:
A chart recorder includes a chart drive assembly including a drive platen, first and second print heads, a slave controller for energizing the second print head, a master controller for energizing the first print head and for actuating the slave controller and a host computer for controlling the master and slave controllers and for supplying data thereto. The master controller controls the chart drive assembly to coordinate it with the energizations of the print heads, and it actuates the slave controller to synchronize the energizations of the print heads. The print heads are independently mounted in end-to-end relation and independently biased toward the chart and the platen at a printing station to enable them to compensate for deflections in the print head and/or the platen, as well as distortions in the heads due to thermal expansion.

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