Patent ID: 7802862
Filing Date: 2010-09-28
Classification: B41J

Abstract:
1. A printhead comprising: an integrated circuit having at least one row comprising a plurality of sets of n adjacent nozzles, each of the nozzles being configured to expel ink in response to fire signals; and a controller for supplying the fire signals to the integrated circuit such that: (a) a fire signal is provided to nozzles at a first and nth position in each set of nozzles; (b) a fire signal is provided to the next inward pair of nozzles in each set; (c) in the event n is an even number, step (b) is repeated until all of the nozzles in each set has been fired; and (d) in the event n is an odd number, step (b) is repeated until all of the nozzles but a central nozzle in each set have been fired, and then the central nozzle is fired.