Printhead assembly capping device

Details Printhead assembly capping device Printhead assembly capping device

2005-11-29

2005-11-29

Hsieh, Shih-Wen (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S030000, C347S033000

Reexamination Certificate

active

06969143

ABSTRACT:
A capping device (12) for a printhead assembly (10) of a pagewidth drop on demand inkjet printer is formed of spring steel and includes an elastomeric onsert (47) having a series of recesses (56) which create chambers positioned over air inlet and exhaust holes (30) of each printhead module (11) of the assembly. These allow the air to flow from one inlet to the next outlet. When the capping device is moved to its capped position, the airways (32) are sealed off so as to prevent air from drying out and therefore blocking the delicate nozzles (62) of the printheads. Another function of the molding is to cover and clamp against nozzle guards (24) of the assembly to protect against drying out and also to keep foreign particles such as paper dust from entering and damaging the printer nozzles (62).

REFERENCES:
patent: 5614929 (1997-03-01), Dangelo et al.
patent: 5677715 (1997-10-01), Beck
patent: 5682186 (1997-10-01), Bohorquez et al.
patent: 5712668 (1998-01-01), Osborne et al.
patent: 6293648 (2001-09-01), Anderson
patent: 6547368 (2003-04-01), Silverbrook
patent: 6767076 (2004-07-01), Silverbrook et al.
patent: 0 597 621 (1998-08-01), None
patent: 0 967 081 (1999-12-01), None

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