Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2001-10-30
2004-01-27
Nguyen, Thinh (Department: 2861)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S029000, C347S033000
Reexamination Certificate
active
06682165
ABSTRACT:
TECHNICAL FIELD OF THE DISCLOSURE
This invention relates to techniques for cleaning surfaces of printhead nozzle arrays in inkjet printheads.
BACKGROUND OF THE DISCLOSURE
It is known to wipe surfaces of nozzle arrays of an inkjet printhead, and to apply a liquid to assist in the wiping process. Some techniques have employed polyethylene wick material and a fibrous reservoir to contain and dispense wet wiping fluid to the wipers. Due to the geometry of the service station, the amount of fluid that can be contained is limited. Extra time (e.g. a few seconds) can be required for the picking of the wet fluid, i.e. transferring the fluid from the wick to the wiper.
SUMMARY OF THE DISCLOSURE
Techniques are disclosed for dispensing a wiper cleaning fluid onto ink-ejecting nozzles of a printhead, wherein the fluid is sprayed or directed as a fluid stream onto the nozzles, effectively dissolving ink residue.
REFERENCES:
patent: 5495272 (1996-02-01), Yamaguchi
patent: 5635965 (1997-06-01), Purwins et al.
patent: 5706038 (1998-01-01), Jackson et al.
patent: 5963228 (1999-10-01), Purwins
patent: 6017110 (2000-01-01), Jackson
patent: 6158838 (2000-12-01), Capurso
patent: 6193353 (2001-02-01), Vives et al.
Hewlett--Packard Development Company, L.P.
Nguyen Thinh
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