A refill unit for insertion into an empty inks cassettes unit

摘要

A refill unit (140) for ink cartridges comprises a housing (142) having a foam portion (184) impregnated with ink (199), the foam portion (184) includes a lower section (194) extending outwardly from a lower panel (170), an annular channel (180) being positioned within the panel (170) surrounding the lower section (194). The refill unit (140) may be positioned within an empty ink cartridge (10, Fig. 2) having an annular seal member (106). A second refill unit (300, Fig. 9) and third refill unit (400, Fig. 10) is also disclosed, both having an enlarged lower section (306, Fig. 10) and (406, Fig. 12) respectively, associated with the foam portion (184) and the annular channel (180) being absent in both instances. In addition, several ink cartridge printing units are disclosed. IMAGE