Patent ID: 6293655
Filing Date: 2001-09-25
Classification: B41J

Abstract:
A liquid ejection head comprising:a plurality of ejection outlets for ejecting liquid;a first substrate and a second substrate for constituting a plurality of liquid flow paths in fluid communication with said ejection outlets, respectively when combined with each other;a plurality of energy conversion elements disposed in said liquid flow paths, respectively to convert electrical energy to ejection energy for the liquid in said liquid flow paths;a first plurality of elements or electric circuits for controlling driving conditions of said energy conversion elements; anda second plurality of elements or electric circuits for controlling driving conditions of said energy conversion elements, said second plurality of elements or electric circuits having functions that are different than functions of said first plurality of elements or electric circuits,wherein said first plurality of elements or electric circuits is provided only on said first substrate, and said second plurality of elements or electric circuits is provided on said second substrate.