Recording device capable of setting drive voltage of print head

Details Recording device capable of setting drive voltage of print head Recording device capable of setting drive voltage of print head

1997-06-12

2000-06-27

Barlow, John

Incremental printing of symbolic information

Ink jet

Controller

B41J 2938

Patent

active

06079805&

ABSTRACT:
A signal line is provided for outputting, from a chip on board to a CPU, a drive voltage setting signal to be used to set drive voltage applied by an IC driver to an ink jet print head. The signal line divided into a first through third signal lines at the chip on board side. A first resistance is connected to the second signal line. A second resistance is connected to the third signal line. A first switch point capable of being brought into a continuous condition by application of solder is provided along the first signal line. A second switch point, also capable of being brought into a continuous condition by application of solder, is provided along the second signal line. The first and second switch points are selectively brought into continuous condition depending on a desired drive voltage to be applied to the print head. With this configuration, only a single signal line is required to set three different drive voltages.

REFERENCES:
patent: 4396923 (1983-08-01), Noda
patent: 4709245 (1987-11-01), Piatt
patent: 5285220 (1994-02-01), Suzuki et al.

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