Patent ID: 6158905
Filing Date: 2000-12-12
Classification: B41J

Abstract:
A printer that is able to bi-directionally print images on a printing medium during reciprocal main scanning in each direction, the printer comprising:a print head;a drive mechanism that effects relative movement between at least the print head and the printing medium in a main scanning direction and a sub-scanning direction and drives the print head to print on the printing medium; anda controller that controls the drive mechanism, the controller including,an adjustment value memory for storing a plurality of adjustment values associated with a plurality of printing media having different widths in the main scanning direction; anda printing deviation adjuster which selects one or more working adjustment values from said plurality of adjustment values according to a width of the printing medium actually used for printing, and adjusts printing positions in the main scanning direction on at least one of forward and reverse passes using the one or more working adjustment values so as to reduce printing deviation on at least one of the forward pass and the reverse pass.