Liquid jet recording apparatus

Details Liquid jet recording apparatus Liquid jet recording apparatus

1994-09-12

1996-01-30

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Controller

73304R, B41J 2195

Patent

active

054883954

ABSTRACT:
A liquid jet recording apparatus includes an ink container. A pair of electrodes are provided to be immersed in the ink in the container. By applying a voltage between the electrodes, the remainder of the ink is detected by a change in the electric resistance between the electrodes. The voltage application is not continuous but is intermittent and is performed at a predetermined time associated with the recording operation (at the time of carriage reversal) to detect the remainder of the ink. When the ink remainder detecting operation is not performed, the voltage is not applied to the electrodes. During a stand-by period the execution of the remainder of ink detection process is carried out only once to prevent degradation of the ink caused by electrolysis.

REFERENCES:
patent: 4196625 (1980-04-01), Kern
patent: 4202267 (1980-05-01), Heinzl et al.
patent: 4368478 (1983-01-01), Koto
patent: 4380019 (1983-04-01), Steinberger et al.
patent: 4422084 (1983-12-01), Saito
patent: 4475116 (1984-10-01), Sicking et al.
patent: 4551734 (1985-11-01), Causley et al.
patent: 4788861 (1988-12-01), Lichti
patent: 4819012 (1989-04-01), Kiyohara et al.

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