Level detection for ink cartridges of ink-jet printers

Details Level detection for ink cartridges of ink-jet printers Level detection for ink cartridges of ink-jet printers

1994-12-20

1996-11-12

Lund, Valerie A.

Incremental printing of symbolic information

Ink jet

Controller

340620, B41J 2175

Patent

active

055744842

ABSTRACT:
The level of ink present in an ink-supply cartridge of an ink-jet type printer is detected by a sensor that moves with the reciprocating pen carriage of the printer. A flag is connected to the collapsible supply cartridge so that the flag position changes relative to the path of the carriage movement as ink is depleted from the cartridge. The sensor detects the presence of the flag and the position change of the flag is precisely measured by the carriage motion control system. An indicition of the cartridge level derived from the flag position is provided.

REFERENCES:
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patent: 5079570 (1992-01-01), Mohr et al.
patent: 5132711 (1992-07-01), Shinada et al.

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