Microcapping of inkjet nozzles

B - Operations – Transporting – 41 – J

Patent

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Details

B41J 2/135 (2006.01) B05D 3/00 (2006.01)

Patent

CA 2697633

An inkjet printer comprising: a printhead comprising a nozzle plate having a plurality of nozzle openings defined therein, said nozzle plate comprising a first relatively hydrophilic layer and a second relatively hydrophobic layer, said second layer defining an ink ejection face for said printhead; and a capper having a planar capping surface, said capper being moveable between a first position in which said capper is disengaged from said printhead and a second position in which said capping surface sealingly engages with said ink ejection face wherein, in said second position, a meniscus of ink contained in each nozzle opening is pinned at an interface between said first and second layers, such that a microwell is defined between said capping surface and said meniscus.

L'invention concerne une Imprimante à jet d'encre comportant : une tête d'impression munie d'une plaque à buses dans laquelle est définie une pluralité d'ouvertures de buses, ladite plaque à buses comportant une première couche relativement hydrophile et une deuxième couche relativement hydrophobe, définissant une face d'éjection d'encre de ladite tête d'impression; et un organe de bouchage présentant une surface plane de bouchage, ledit organe de bouchage étant mobile entre une première position dans laquelle ledit organe de bouchage est séparé de ladite tête d'impression et une seconde position dans laquelle ladite surface de bouchage coopère de façon étanche avec ladite face d'éjection d'encre, Dans la seconde position, un ménisque d'encre contenu dans chaque ouverture de buse est piégé au niveau d'une interface entre lesdites première et seconde couches, de sorte qu'un micro-puits est défini entre ladite surface de bouchage et ledit ménisque.

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