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(11) | EP 0 802 057 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Liquid accommodating container, ink jet cartridge having said liquid accommodating container and ink jet apparatus having said ink jet cartridge |
(57) A liquid accommodating container is connected to an ink jet head and accommodates
a liquid supplied to said ink jet head. The container comprises: a partition (215)
for dividing said liquid accommodating container into having a first chamber (203)
and a second chamber (204), wherein said first chamber (203) is accommodated with
a negative pressure generating member (205) and has a supply portion (209) for supplying
the liquid to said head and an atmosphere communicating section (206, 208) communicated
with an atmospheric air, said second chamber (204) is communicated with said first
chamber (203) through said atmosphere communicating section (206, 208) and substantially
sealed except said atmosphere communicating section (206, 208), said second chamber
(204) accommodating the liquid to be supplied to said first chamber (203), and an
area between said supply portion (209) of said first chamber (203) and said atmosphere
communicating section (206, 208) having a liquid supply promoting arrangement (217)
for promoting the liquid to move. |