System and method for attenuating ink weeping and air ingestion in a printhead moved by an articulating arm
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United States of America Patent
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Mar 9, 2021
Grant Date -
Aug 6, 2020
app pub date -
Feb 6, 2019
filing date -
Feb 6, 2019
priority date (Note) -
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Abstract
An inkjet printer adjusts operation of a vacuum system coupled to a printhead to compensate for pressure changes in the manifold of the printhead caused by vertical displacement of the printhead within the printer. The inkjet printer includes a controller that determines either a difference between an optimal pressure in the manifold and a current pressure to operate a vacuum coupled to the manifold for pressure adjustment or it correlates a current printhead vertical position to a previously observed vertical position and uses a vacuum value associated with the previously observed vertical position to operate the vacuum.
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