Ink-jet printing apparatus with a system for detecting remaining

Details Ink-jet printing apparatus with a system for detecting remaining Ink-jet printing apparatus with a system for detecting remaining

1997-06-03

2000-08-29

Barlow, Jr., John E.

Incremental printing of symbolic information

Ink jet

Controller

B41J 2195

Patent

active

061097144

ABSTRACT:
In order to perform detection of remaining amount of an ink in an ink tank used in an ink-jet printing apparatus, a current to be supplied to an ejection heater for driving the ejection heater to perform ink ejection via a stabilized power source 3 is detected by an FC timer. The FC timer is constructed to cause variation of position of an electrolyte in a mercury depending upon integrated amount of the detected current. Thus, by visually observing the position of the electrolyte in the FC timer, the total consumed amount of the ink can be detected.

REFERENCES:
patent: 4513314 (1985-04-01), St. John et al.
patent: 5255021 (1993-10-01), Noguchi et al.

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