the number may be one or no less than three also in the above described embodiment the cross section of the liquid outlet portion 100 was circular however the shape of the cross section of the liquid outlet portion 100 is optional for example it may be rectangular elliptical triangular or may have any shape other than the preceding ones as for the compatibility of the present invention with ink jet recording apparatuses having a liquid container mounting portion into which the above described liquid container 1000 is mountable the present invention is applicable to various ink jet recording apparatuses and the application produces effects similar to those described above regardless of their recording methods for example the present invention is compatible with serial type ink jet recording apparatuses which record images by moving the recording head as a recording means in the primary scanning direction line type ink jet recording apparatuses which record images by moving only in the secondary scanning direction a line type recording head which is long enough to partially or entirely cover the width of recording medium further the present invention is applicable to various ink jet recording apparatuses regardless of the number of recording heads mounted in the apparatuses for example the present invention is compatible with ink jet recording apparatuses employing only a single recording head color ink jet.