Device for sensing cartridge replacement time in a printer equip

Details Device for sensing cartridge replacement time in a printer equip Device for sensing cartridge replacement time in a printer equip

1997-02-28

1999-12-21

Barlow, John

Incremental printing of symbolic information

Ink jet

Controller

B41J 2195

Patent

active

060039663

ABSTRACT:
A cartridge having a storage reservoir for retaining printing ink in a printer equipment using an inkjet injection apparatus includes a device for sensing cartridge replacement time. The reservoir is to precisely sense the presence of the ink and to work with a device for sensing so as to accurately note a time for replacement of an ink cartridge. In such a device for sensing, when a conductor sensing plate descends along the surface of the ink within the storing part, the conductor sensing plate allows a sensing terminal and a conductor sensor to ground at the lowest level of the ink. Then, the sensing terminal connected to a sensor senses the presence of the ink to send a signal to a central processing unit, thereby accurately recognizing the replacement time of the cartridge.

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