| 摘要 |
PROBLEM TO BE SOLVED: To check the discharging characteristics of a recording head in charging irrespective of the reciprocatingly moving action between an ink cartridge and a sub-tank so as to improve print quality. SOLUTION: In respectively response to two ink feeding states that a first process for supplying ink from an ink cartridge 6 through a recording head 8 to a sub-tank 10 and a second process for back-flowing the ink from the sub-tank 10 through the recording heat 8 to the ink cartridge 6, a driving voltage pulse adjusting means 53 adjusts a driving voltage pulse condition for feeding to the recording head 8 optimally. |
