Patent ID: 6070965
Filing Date: 2000-06-06
Classification: B41J

Abstract:
An ink jet printhead comprising a plurality of printhead elements each having a plurality of ink injecting holes, a flat flexible cord electrically connected to the plurality of printhead elements, and an ink supplier for supplying the plurality of printhead elements with ink,wherein each printhead element includes a front wall provided with the plurality of ink injecting holes, said each printhead element also including a side wall formed with a plurality of grooved ink passageways communicating with the plurality of ink injecting holes, said each printhead element further including a diaphragm attached to the side wall of the printhead element and carrying a plurality of piezoelectric elements in corresponding relation to the plurality of ink passageways,wherein the plurality of printhead elements are laminated on each other with the front walls thereof oriented in a same direction,wherein the flexible cord includes a flexible sheet and a conductive wiring pattern formed on the flexible sheet, the conductive wiring pattern having output terminals electrically connected to the piezoelectric elements of the printhead elements, andwherein the flexible sheet together with the wiring pattern is alternately folded in opposite directions and inserted at every other folded portion between adjacent printhead elements.