INK JET PRINT HEAD

摘要

PROBLEM TO BE SOLVED: To provide an ink jet print head in which the size of a liquid drop can be regulated easily and a liquid drop can be ejected at a higher frequency with a higher response by preventing backflow of ink and clogging of a channel thereby preventing deterioration of the print head effectively. SOLUTION: Unit chambers 300a are isolated by chamber wall bodied 102c in units of nozzle and two unit heaters 400a, 400b constituting a bubble generating means 400 are provided. Ink is supplied to each unit chamber from both directions. The two unit heaters 400a, 400b generate bubbles of the same size on the opposite sides of a nozzle 201. Ink existing below the nozzle 201 is isolated by both bubbles 600b and ejected by the expansion force thereof through the nozzle 201.