Patent ID: 9199463
Filing Date: 2015-12-01
Classification: B41J

Abstract:
1. A liquid discharge head configured to discharge liquid to a medium comprising: a nozzle substrate formed integrally with a semiconductor substrate as a base, and in which a first liquid channel and a second liquid channel are formed, the first liquid channel being disposed inside the nozzle substrate to communicate with a plurality of first nozzles from which a first liquid supplied from a liquid supply source is discharged, the second liquid channel being disposed inside the nozzle substrate to communicate with a plurality of second nozzles from which a second liquid different from the first liquid and supplied from the liquid supply source is discharged; a plurality of first energy applying mechanisms provided in the first liquid channel to correspond to the first nozzles respectively on the semiconductor substrate and configured to apply energy to discharge the first liquid from the first nozzles to the first liquid; a plurality of second energy applying mechanisms provided in the second liquid channel to correspond to the second nozzles respectively on the semiconductor substrate and configured to apply energy to discharge the second liquid from the second nozzles to the second liquid; and an electrical element provided on the semiconductor substrate to be electrically connected to the first energy applying mechanisms and the second energy applying mechanisms; wherein the first nozzles are arranged in an arrangement direction to form a first nozzle row and the second nozzles are arranged in the arrangement direction to form a second nozzle row in the nozzle substrate; wherein the first nozzle row and the second nozzle row are arranged side by side in a row-alignment direction perpendicular to the arrangement direction; wherein a length of the first nozzle row in the arrangement direction is longer than a length of the second nozzle row in the arrangement direction; and wherein the electrical element is provided on the semiconductor substrate at a position which does not overlap with a first corresponding position and a second corresponding position, the first corresponding position being a position, on the semiconductor substrate, which corresponds to a position in which the first nozzle row is formed in a thickness direction perpendicular to the arrangement direction and the row-alignment direction, the second corresponding position being a position, on the semiconductor substrate, which corresponds to a position in which the second nozzle row is formed in the thickness direction.