Patent ID: 6637865
Filing Date: 2003-10-28
Classification: B41J

Abstract:
A liquid discharge head comprising:a common liquid chamber supplied with liquid, said common liquid chamber being extended along a longitudinal direction; a plurality of main discharge ports arranged at a predetermined main interval respectively on both sides of said common liquid chamber along the longitudinal direction; a plurality of auxiliary discharge ports arranged on both end sides of the arrangement direction of said main discharge ports, said auxiliary discharge ports being arranged at a predetermined auxiliary interval on both sides of said common liquid chamber along the longitudinal direction, wherein the auxiliary interval is larger than the main interval; a plurality of liquid chambers to which said main and auxiliary discharge ports open and communicated with said common liquid chamber; and a plurality of discharge energy generating units provided for each liquid chamber corresponding to a main discharge port or an auxiliary discharge port to generate energy utilized for discharging liquid from said main discharge ports and said auxiliary discharge ports.