Printhead capper frictionally engaged to drive

Details Printhead capper frictionally engaged to drive Printhead capper frictionally engaged to drive

2006-06-13

2006-06-13

Hsieh, Shih-Wen (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S030000, C347S032000

Reexamination Certificate

active

07059704

ABSTRACT:
This invention concerns a printhead capping mechanism for preventing evaporation of ink from a printhead when it is not in use. The invention has utility, for instance, in a color printer which uses a drop-on-demand inkjet printhead. The mechanism includes a cap fitted with an elastomeric seal to seal against the face of the printhead, and a sponge to catch drops ejected from the printhead during the nozzle cleaning cycle. The mechanism also includes an actuating structure operable to selectively move the cap between an engaged position to press against the printhead and a disengaged position spaced away from the printhead. The actuating structure frictionally engages a drive member so that it can slip against the drive member when the cap reaches the engaged or disengaged positions.

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