Ink tank, ink tank-integrated head cartridge having the tank and

Details Ink tank, ink tank-integrated head cartridge having the tank and Ink tank, ink tank-integrated head cartridge having the tank and

1994-05-12

1997-07-29

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

347 7, B41J 2175

Patent

active

056526105

ABSTRACT:
An ink absorbing member is inserted in an ink tank housing which at least partly has a transparent portion. Used as this ink absorbing member is one having a reflection density after ink removal which is close to the reflection density of a melamine foam before ink injection. The amount of ink remaining in a cartridge of such a construction can be detected, for example, by a separate line sensor. The results of detection by the line sensor can be displayed by a remaining ink amount indicator provided on a control panel of the printing apparatus.

REFERENCES:
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patent: 4631548 (1986-12-01), Milbrandt
patent: 4929969 (1990-05-01), Morris
patent: 4935751 (1990-06-01), Hamlin
patent: 5079570 (1992-01-01), Mohr et al.
patent: 5132711 (1992-07-01), Shinada et al.
patent: 5162817 (1992-11-01), Tajika et al.
patent: 5162818 (1992-11-01), Karita et al.
patent: 5241189 (1993-08-01), Vandagriff et al.
patent: 5371529 (1994-12-01), Eguchi et al.

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