Head cartridge and liquid ejection apparatus

Details Head cartridge and liquid ejection apparatus Head cartridge and liquid ejection apparatus

2007-07-05

2010-06-15

Hsieh, Shih-wen (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S032000

Reexamination Certificate

active

07735960

ABSTRACT:
A head cartridge and a liquid ejection apparatus are provided in which cleaning performance of cleaning means is improved using a liquid absorbing force of a wiping member produced along with restoration of temporarily increased elastic displacement of the wiping member. An elastic displacement h (height of a projection) of a cleaning roller temporarily produced by the projection arranged at a position in the foreground of ink ejection nozzles in the cleaning direction of a nozzle surface is established to satisfy the following condition:in-line-formulae description="In-line Formulae" end="lead"?h>(Vu/Vr)(L+n/2−φ/2),in-line-formulae description="In-line Formulae" end="tail"?where the restoring speed of the elastic deformation of the cleaning roller is denoted as Vu; the moving speed of the cleaning roller is denoted as Vr; the movement distance of the cleaning roller from a restoring initiation point of the elastic deformation to the center of the liquid ejection nozzles is L; the contact width between the cleaning roller and the nozzle surface is n; and the diameter of the ink ejection nozzle is φ.

REFERENCES:
patent: 6460967 (2002-10-01), Makita et al.
patent: 6637856 (2003-10-01), Nishi et al.
patent: 6975466 (2005-12-01), Umeyama et al.
patent: 7073886 (2006-07-01), Nakamura
patent: 7252361 (2007-08-01), Nishikawa et al.
patent: 06-255117 (1994-09-01), None
patent: 10-044447 (1998-02-01), None
Japanese Office Action issued on Jun. 5, 2007.

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