Patent ID: 6315382
Filing Date: 2001-11-13
Classification: B41J

Abstract:
A printer that applies a printed pattern on a print medium, the printer comprising:control logic;a printhead that is responsive to the control logic, the printhead having printhead rows of individual print elements arranged to apply transverse dot rows to the print medium, each printhead row having one or more print elements;a drive mechanism that is responsive to the control logic to position the print medium longitudinally relative to the printhead;the control logic being configured to print a set of one or more dot rows by performing steps comprising:initiating a first drive mechanism advance to a first print medium target position, wherein the first drive mechanism advance positions the print medium to an actual position that is potentially different than the first print medium target position;detecting the actual position of the print medium after the first drive mechanism advance;selecting a set of one or more printhead rows that correspond most closely in longitudinal position to a desired location of the set of dot rows, such that a forward drive mechanism advance will position the selected set of printhead rows at the desired location of the set of dot rows;initiating a second drive mechanism advance to a second print medium target position that positions the selected set of printhead rows at the desired location of the set of dot rows;printing the set of dot rows with the selected set of printhead rows.