Patent ID: 6471320
Filing Date: 2002-10-29
Classification: B41J

Abstract:
A printhead comprising:a first column of nozzles; first nozzle column register and logic units configured to receive first serial nozzle data and to provide first nozzle firing control signals for controlling the firing of ink drops from the first column of nozzles; a second column of nozzles; second nozzle column register and logic units configured to receive the first serial nozzle data and to provide second nozzle firing control signals for controlling the firing of ink drops from the second column of nozzles; first column redundancy logic configured to disable selected nozzles of the first column of nozzles from firing which correspond to selected nozzles of the second column of nozzles enabled for firing; and second column redundancy logic configured to disable selected nozzles of the second column of nozzles from firing which correspond to selected nozzles of the first column of nozzles enabled for firing.