Manual pen selection for clearing nozzles without removal from p

Details Manual pen selection for clearing nozzles without removal from p Manual pen selection for clearing nozzles without removal from p

1993-04-30

1995-09-12

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 2165

Patent

active

054501059

ABSTRACT:
A thermal ink jet printhead cartridge priming apparatus that includes a plurality of caps respectively associated with a plurality of printhead nozzle arrays for controllably sealing printhead nozzle arrays pursuant to engagement thereof against the printhead cartridge to surround the nozzle arrays, a plurality of vacuum conveying elements respectively associated with the caps for individually conveying priming vacuum to an associated cap, a manually actuated selector assembly for connecting a selected one of the vacuum conveying elements to a source of priming vacuum, and a source of priming vacuum spaced apart from the manually actuated selector assembly for selectively engaging the selector assembly for application of vacuum thereto. By separating the vacuum source from the selector, positive pressure is not applied to the nozzle arrays when the caps are brought into engagement with the printhead cartridges since venting is provided by the unobstructed vacuum conveying elements.

REFERENCES:
patent: 4853717 (1989-08-01), Harmon et al.

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