Liquid containment and dispensing device with improved...

B - Operations – Transporting – 41 – J

Patent

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B41J 2/175 (2006.01)

Patent

CA 2234353

An ink containment and dispensing device for an ink-jet printer is provided with a main reservoir in the form of a flexible pouch, 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 outward 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 pump has a linearly acting pumping member and a flexible diaphragm that overlies the pumping member, the diaphragm being impervious to the transmission of oxygen and moisture therethrough to prevent degradation of the ink within the chamber.

Dispositif de confinement et de distribution d'encre pour une imprimante à jet d'encre avec un réservoir principal sous forme de sac flexible, lequel est typiquement maintenu à pression ambiante. Le réservoir principal est raccordé à une chambre à volume variable par un clapet de non-retour qui permet à l'encre de passer du réservoir à la chambre et l'empêche de revenir de la chambre au réservoir. La chambre est raccordée à une sortie de liquide qui est normalement fermée pour empêcher l'écoulement de l'encre vers l'extérieur. Cependant, quand on installe la provision d'encre dans une imprimante, la sortie de liquide établit un raccordement liquide entre la chambre et l'imprimante. La chambre fait partie d'une pompe fournie avec la provision d'encre qui peut être actionnée pour faire passer de l'encre du réservoir à l'imprimante. La pompe a un élément de pompage à action linéaire et une membrane souple par-dessus l'élément de pompage, laquelle est imperméable à l'oxygène et à l'humidité de manière à prévenir la dégradation de l'encre à l'intérieur de la chambre.

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