Patent ID: 6695442
Filing Date: 2004-02-24
Classification: B41J

Abstract:
An ink-jet print head, comprising:a plurality of ink jetting nozzles arranged in a line; a plurality of pressure chambers respectively communicating with said nozzles and arranged in a line extending in a first direction; an ink reservoir extended along the line of said pressure chambers, communicating with said plurality of pressure chambers in common, said ink reservoir being provided with a predetermined width and a predetermined depth; and an ink supply passage having an upstream side and a downstream side, said downstream side having an exit, the exit which communicates with said ink reservoir; wherein at the exit to said ink reservoir, a cross-section of said ink supply passage is made smaller than a cross-section of a part of said ink supply passage on an upstream side of the exit; and wherein a flexible portion is superposed over said ink reservoir, and is continued overall from one end of said ink reservoir to the other end of said ink reservoir along the first direction.