Printing in which the print head prints in both directions (bidirectionally). This increases the print speed but may reduce precise vertical alignment. Bidirectional printing is this printer's standard printing mode. See also unidirectional printing.

A printing terminal technique to increase printing throughput by printing lines from right to left in addition to printing other left to right, thus using the carriage return time. If the printer is buffered, the data may be send in the usual order even if it is not to be printed right to left.

Bidirectional printing is a technique whereby ink is applied to the printing surface as the print head is moving in both directions, thus speeding the printing process.