Liquid dispensing apparatus

B - Operations – Transporting – 41 – J

Patent

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Details

B41J 2/135 (2006.01) B41J 2/025 (2006.01) B41J 2/175 (2006.01)

Patent

CA 2320704

There is disclosed a device for dispensing liquids, in particular dyes or inks. The device comprises a liquid tank (5), a dispensing nozzle (7), and a liquid conduit (3) with an end connected to the liquid tank for supplying liquid from the liquid tank to the dispensing nozzle. The device is provided with vibrator means, particularly a piezoelectric transducer (4). The transducer is used for inducing a vibrating action of the dispensing nozzle, and by the vibrating action resulting in an acceleration of the nozzle, to an extent that is sufficient to cause the detachment of the liquid from the nozzle. The invention also relates to a printing head and system utilising the inventive dispensing device.

La présente invention concerne un dispositif permettant de distribuer des liquides, en particulier des colorants ou des encres. Le dispositif de l'invention comprend un réservoir de liquide (5), une buse de distribution (7) et un conduit de liquide (3) dont une extrémité est reliée au réservoir de liquide de façon qu'il amène le liquide depuis le réservoir de liquide jusqu'à la buse de distribution. Le dispositif est muni de moyens vibreurs, en particulier d'un transducteur piézo-électrique (4). Le transducteur est utilisé pour induire une vibration de la buse de distribution, l'action de vibration produisant une accélération de la buse telle qu'elle provoque le détachement du liquide de la buse. L'invention se rapporte également à une tête et à un système d'impression faisant appel au dispositif de distribution de la présente invention.

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