Patent ID: 6669330
Filing Date: 2003-12-30
Classification: B41J

Abstract:
A method of driving a print head (10) having a longitudinal axis in a first direction (S) and having an array of marking elements (A, B, C; A, B, C, D) comprising at least one group (G) of marking elements (A, B, C; A, B, C, D), marking elements (A, B, C; A, B, C, D) of one group (G) being staggered with respect to each other over a stagger distance (D1) in a second direction (F) perpendicular to the first direction (S), the print head (10) being intended to be driven with a reference velocity (Vref) equal to the stagger distance (D1) multiplied by a reference firing frequency (Fref), each marking element of a group being firable at each reference firing frequency pulse, the marking elements (A, B, C; A, B, C, D) of the print head (10) being intended to be fired according to a reference firing order to print an image at a first resolution, wherein the print head (10) is operated at an operating velocity which is different from the reference velocity to print the same image at a different resolution.