INKJET RECORDING HEAD, INKJET RECORDER, AND MAINTENANCE METHOD OF INKJET RECORDING HEAD

PROBLEM TO BE SOLVED: To provide an inkjet recording head in which missing of block can be restored quickly when a nozzle is missed and the quantity of waste ink can be reduced sharply at the time of restoration operation, and to provide an inkjet recorder provided with the inkjet recording head, and a maintenance method of the inkjet recording head. SOLUTION: The inkjet recording head comprises a plurality of blocks each provided with a group of nozzles arranged in matrix, and an ink supply channel consisting of a branch path and a pair of main paths communicating the opposite ends of the branch path wherein ink is supplied to the nozzle through the branch path of the ink supply channel and when ink is not ejected from the nozzle in at least one block, ink is circulated through the main path and the branch path in the ink supply channel of at least that block and then suction maintenance is carried out by sucking the nozzle of that block from the ejection side. Maintenance method of the inkjet recording head, and an inkjet recorder provided with the inkjet recording head are also provided. COPYRIGHT: (C)2006,JPO&NCIPI