Wetting control by asymmetric Laplace pressure
AssigneeOce-Technologies B.V.
InventorsGheorghe D. Cringus, Marcus J. Van Den Berg
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Abstract
A print head configured for ejecting droplets of ink comprises a nozzle surface having arranged thereon at least one nozzle and a pattern of wetting sections and anti-wetting sections, arranged around the nozzle. The wetting sections interchange on a circular line, concentric with the nozzle, with anti-wetting sections. The pattern of wetting sections and anti-wetting sections is configured such that it provides a driving force for droplets to move away from the nozzle. The invention further relates to a printing apparatus, comprising said nozzle.
Claims13
A print head configured for ejecting droplets of ink, said print head having a nozzle surface, said nozzle surface comprising a nozzle and a pattern arranged around the nozzle, the pattern comprising an anti-wetting section and a wetting section, and the pattern having an inner periphery and an outer periphery, the anti-wetting section and the wetting section each extending from the inner periphery to the outer periphery, the anti-wetting section alternating, on a circular line concentric with the nozzle, with the wetting section,
- wherein
- the anti-wetting section has a width at the outer periphery larger than a width of a wetting section at the outer periphery.
Dependencies are inferred from the claim text.