Ink detecting device for a liquid-ink printing element

Details Ink detecting device for a liquid-ink printing element Ink detecting device for a liquid-ink printing element

1992-04-17

1994-02-22

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

73304R, B41J 2175

Patent

active

052892115

ABSTRACT:
The ink detecting device gives advance warning of the end of the ink in a reservoir or cartridge feeding an ink-jet thermal print head. The device comprises a pair of electrodes that are immersed in a spongy, ink-soaked body contained in the reservoir, and are arranged in a region adjacent to the feed duct at which the spongy body has a 30% to 100% higher capillarity than in remote regions. The electrodes are connected to a bridge circuit which measures the electrical resistance of the ink between the two electrodes.

REFERENCES:
patent: 4183029 (1980-01-01), Isayama et al.
patent: 4196625 (1980-04-01), Kern
patent: 4202267 (1980-05-01), Heinzl et al.
patent: 4551734 (1985-11-01), Causley
patent: 4630758 (1986-12-01), Mutoh
patent: 4771295 (1988-09-01), Baker
patent: 4812859 (1989-03-01), Chan et al.
patent: 4879902 (1989-11-01), Loniello
patent: 4929969 (1990-05-01), Morris
patent: 5051759 (1991-09-01), Karita et al.
patent: 5070346 (1991-12-01), Mochizoki
patent: 5119115 (1992-06-01), Buat
patent: 5162817 (1992-11-01), Tajika
patent: 5182581 (1993-01-01), Kashimura

Affiliated with

Also associated with

Rating

Ink detecting device for a liquid-ink printing element does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ink detecting device for a liquid-ink printing element, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ink detecting device for a liquid-ink printing element will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-175233