Serial printing apparatus and printing method
AssigneeSeiko Epson Corporation
InventorsMinoru Usui, Takahiro Katakura
Life of this patent
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Abstract
A printing apparatus includes a piezoelectric displacement element 11 for shifting a printing head 6 in a sheet feed direction, in which a recording sheet is fed. The element 11 shifts the head 6 at a predetermined pitch when a new printing pass is performed. Therefore, it is possible to improve the accuracy of printed images without being influenced by the degree of accuracy of a sheet feed mechanism.
Claims12
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 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 head relative to the carriage, wherein the displacement mechanism shifts the head at a predetermined pitch in response to a switching of a printing pass.
A serial printing apparatus having a sheet feed mechanism and a printing head, wherein the feed mechanism feeds the sheet at a predetermined pitch and the head is mounted on a carriage to form dots on the sheet, and wherein the carriage reciprocates along a guide means, and wherein odd-numbered lines or even-numbered lines in one set of lines are printed after the feed mechanism feeds the sheet at a predetermined pitch, and wherein the remainder of the odd-numbered lines or the even-numbered lines are printed after the displacement mechanism shifts the head by one set of lines.
Dependencies are inferred from the claim text.