| 摘要 |
A capping device seals against a print chip ( 12 ) of a printhead ( 11 ) fixed within a housing ( 10 ) of a hand-held portable printer. The capping device can be moved manually by a user or automatically by internal mechanisms to reveal the print chip for printing. The capping device includes a capper arm ( 13 ) with an activating region ( 15 ) and a perpendicular leg ( 28 ) with an elastomeric pad ( 16 ) that seals against the chip ( 12 ). The capping device can be moved by mechanisms such as a fulcrum or pivot point ( 14 ), a friction clutch ( 19 ) with peg ( 20 ), an eccentric cam ( 23 ) or an internal solenoid ( 26 ). The capper arm can be formed of a resilient, elastically deformable material such as metal or plastics. In a non-printing mode, the capping device seals the print chip to prevent evaporation of ink, drying or blockages.
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