Patent ID: 7878633
Filing Date: 2011-02-01
Classification: B41J

Abstract:
1. An ink refilling unit comprising: an ink cartridge configured to store ink, the ink cartridge including a discharge port configured to discharge the ink, and an atmospheric-pressure introducing port configured to introduce atmospheric pressure to an inside of the ink cartridge; a cartridge casing configured to receive the ink cartridge therein, the cartridge casing including an atmospheric-pressure introducing sleeve having a distal end projecting to the outside from the cartridge casing, the atmospheric-pressure introducing sleeve communicating with the atmospheric-pressure introducing port of the ink cartridge, the atmospheric-pressure introducing sleeve having a slit formed in a bottom surface thereof to allow the inside and the outside of the atmospheric-pressure introducing sleeve to communicate with each other; an ink absorber comprising a surface which is brought into contact with the distal end of the atmospheric-pressure introducing sleeve and an outer peripheral surface around the surface, the ink absorber configured to absorb ink leaked from the atmospheric-pressure introducing port; and an ink absorber housing including a fixing plate and a frame body formed on a periphery of the fixing plate, the ink absorber housing configured to accommodate the ink absorber therein and fix the ink absorber to the fixing plate, the ink absorber housing including at least one projecting ridge on an inner surface of the frame body, the projecting ridge configured to partially press the outer peripheral surface of the ink absorber accommodated in the ink absorber housing.