A method of printing patterns for vertically aligning a serial printer that increases the speed of the vertical alignment operation. The method also reduces alignment errors caused by mechanical variation by printing a plurality of aligning patterns on the same line while a carriage body is continuously...http://www.google.de/patents/US5995713?utm_source=gb-gplus-sharePatent US5995713 - Method of printing patterns for vertically aligning a print cartridge in an image printing apparatus
