Liquid ejecting head, head cartridge and liquid ejecting apparatus

A head cartridge including a liquid ejecting head for ejecting liquid and liquid container for containing liquid to be supplied to the liquid ejecting head, said liquid ejecting head comprising:

• a plurality of ejection outlets for ejecting liquid;
• a first substrate and a second substrate for constituting, when combined with each other, a plurality of liquid flow paths in fluid communication with said ejection outlets;
• a plurality of energy conversion elements, each disposed in one of said liquid flow paths, for converting electrical energy to ejection energy for ejecting the liquid in said liquid flow path;
• a first plurality of elements or electric circuits for controlling driving conditions of said energy conversion elements;
• and
• a 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.

A liquid ejection recording device including a liquid ejecting head for ejecting liquid, a liquid container for containing liquid to be supplied to the liquid ejecting head, said liquid ejection recording device comprising:

• driving signal supply means for supplying a driving signal for ejecting the liquid from said liquid ejecting head;
• a plurality of ejection outlets for ejecting liquid from said liquid ejecting head;
• a first substrate and a second substrate for constituting, when combined with each other, a plurality of liquid flow paths in fluid communication with said ejection outlets;
• a plurality of energy conversion elements, each disposed in one of said liquid flow paths, for converting electrical energy to ejection energy for ejecting the liquid in said liquid flow path;
• a first plurality of elements or electric circuits for controlling driving conditions of said energy conversion elements;
• and
• a 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.