DISCHARGE DEFECT INVESTIGATION METHOD FOR FUNCTIONAL DROPLET DISCHARGE HEAD

PROBLEM TO BE SOLVED: To provide a discharge defect investigation method for a functional droplet discharge head by which the cause of the discharge defect is accurately investigated. SOLUTION: The discharge defect investigation method for functional droplet discharge head 1 includes a cleaning step S1 of: cleaning and drying a flow passage of the head by passing alcohol to the functional droplet discharge head 1 determined to be in discharge defect condition; a head disassembling step S2 of: separating a functional droplet introducing part from a discharge function part; a curing agent filling step S3 of: injecting and filling the resin curing agent into the flow passage in the head of the functional droplet discharge head 1; a nozzle plate peeling step S4 of: peeling a nozzle plate 6 from the functional droplet discharge head 1 after the resin curing agent is cured; and an observation step S5 and an analysis step S6 of: taking out the cured resin curing agent and performing observation and analysis to check the presence or absence of foreign matter therein. COPYRIGHT: (C)2009,JPO&INPIT