Passivation of printhead assemblies and components therefor

Details Passivation of printhead assemblies and components therefor Passivation of printhead assemblies and components therefor

B - Operations, Transporting

41

J

B41J 2/16 (2006.01) B41J 2/175 (2006.01)

Patent

CA 2610248

A printhead assembly comprising the printhead and filters intended for use with the printhead is passivated by passing a gaseous coating such as Parylene through the assembly. In this way dirt particles created during manufacture of the printhead are encapsulated and thus prevented from blocking the nozzles. The printhead assembly is also prevented from interacting physically or chemically with ink flowing through the printhead.

L~invention se rapporte à un ensemble tête d~impression comprenant la tête d~impression et les filtres destinés à être utilisés avec la tête d~impression. Cet ensemble est passivé par application d~un revêtement gazeux tel que le parylène. Cela permet aux particules d~impuretés, créées lors de la fabrication de la tête d~impression, d~être encapsulées et ainsi de ne pas boucher les buses. Cette invention permet également à l~ensemble tête d~impression de ne pas interagir physiquement ou chimiquement avec l~encre traversant la tête d~impression.

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