thereof as best shown in fig2 such baffles 76 78 and 80 are thus formed within the reservoir 24 to provide a separate ink tank or chamber for each of the ink supply tubes 30 70 72 and 74 for the print heads 40 a plurality of apertures 82 84 and 86 are provided in the baffle plates 76 78 and 80 respectively near the bottom thereof and located near the rear wall of the reservoir 24 for equalizing the levels of ink 12 in the respective baffle formed chambers or tanks while apertures 82 84 and 86 are shown in the plates 76 78 and 80 any suitable opening at or near the bottom of the plates could serve the purpose of allowing the ink to flow between the chambers the operating ink level for the print heads 40 indicated as 88 in the reservoir 24 is maintained within an allowable range as indicated by the arrow 90 at the right side of fig1 the difference in the ink level 88 indicated in reservoir 24 and the level of ink 12 in reservoir 10 may be attained by means of a suitable valve or pump located in the flexible line 14 between the reservoirs it has been found in actual operation that.