Patent ID: 6767074
Filing Date: 2004-07-27
Classification: B41J

Abstract:
A serial printing apparatus having a sheet feed mechanism and a printing head, wherein the mechanism feeds a recording sheet at a predetermined pitch and the printing head is mounted on a carriage to form dots on the sheet, and wherein the carriage reciprocates along a guide means, the serial printing apparatus comprising a displacement mechanism for shifting the printing head relative to the carriage, wherein the displacement mechanism shifts the printing head at a predetermined pitch in response to a switching of a printing pass;wherein the displacement mechanism is disposed between the printing head and the carriage; wherein the displacement mechanism directly abuts the printing head and the carriage; and, wherein the feed mechanism feeds the sheet by a distance that corresponds to a plurality of dots that are formed by the printing head, and wherein the displacement mechanism shifts the printing head by a distance that is less than the pitch of one dot that is formed by the printing head.