Printing apparatus

Details Printing apparatus Printing apparatus

1986-01-21

1987-01-13

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

G01D 1518

Patent

active

046368140

ABSTRACT:
An ink-jet printer has a tank holding ink therein, an ink-jet printing head for printing on a paper sheet, an ink cartridge for holding a supply ink, electrodes for detecting an ink level in the tank, a feeder for feeding the ink in the ink cartridge to the tank when the electrodes detect that the ink level in the tank is below a predetermined level, a timer circuit for allowing the feeder to supply an extra amount of ink to the tank even after the ink level reaches a normal level, and a warning device for warning the operator if the ink level is not recovered to the normal level within a predetermined period of time after the feeder is operated.

REFERENCES:
patent: 4178595 (1979-12-01), Jinnai
patent: 4187511 (1980-02-01), Robinson
patent: 4342042 (1982-07-01), Cruz-Uribe
patent: 4432005 (1984-02-01), Duffield
patent: 4475116 (1984-10-01), Sicking

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