Incremental printing of symbolic information – Ink jet – Controller
Patent
1995-12-04
1998-12-01
Fuller, Benjamin R.
Incremental printing of symbolic information
Ink jet
Controller
347 86, B41J 2195
Patent
active
058445790
ABSTRACT:
An ink supply for an ink-jet printer is provided with a main reservoir, which is typically maintained at ambient pressure. The main reservoir is coupled to a variable volume chamber via a one-way valve which allows the flow of ink from the reservoir to the chamber and prevents the flow of ink from the chamber to the reservoir. The chamber is coupled to a fluid outlet which is normally closed to prevent the flow of ink. However, when the ink supply is installed in a printer, the fluid outlet establishes a fluid connection between the chamber and the printer. The chamber is part of a pump provided with the ink supply that can be actuated to supply ink from the reservoir to the printer. The volume of the chamber can be monitored during actuation of the pump to detect when the quantity of ink within the ink supply is low.
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Barinaga John A.
Cameron James M.
Underwood John A.
Fuller Benjamin R.
Hallacher Craig A.
Hewlett--Packard Company
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