Printing apparatus and adjustment method

A printing apparatus comprising:

• a print head that has a plurality of nozzle rows, each of which is composed of a plurality of nozzles;
• an imaging apparatus that includes an area sensor and a lens;
• a carriage in which the print head and the imaging apparatus are mounted;
• and
• a processing section that prints a test pattern by using the print head, causes the imaging apparatus to image the test pattern, acquires an imaged test pattern, and according to the imaged test pattern, detects landing deviation of ink discharged from the plurality of nozzles;
• wherein
• the area sensor has a matrix of a plurality of pixels placed in a row direction and a column direction,
• the imaging apparatus is disposed in the carriage so that the row direction of the area sensor and a direction in which the plurality of nozzles constituting each nozzle row are placed become parallel, and
• the processing section causes ink to be discharged from a nozzle row to be adjusted, the nozzle row being included in the plurality of nozzles rows, to print the test pattern, after which by using a virtual two-dimensional scale as a reference in detection of landing deviation, the virtual two-dimensional scale being a scale in which the row direction of the area sensor is a Y-axis direction and the column direction of the area sensor is an X-axis direction, the processing section detects the landing deviation caused by the nozzle row to be adjusted, according to the imaged test pattern,
• wherein:
• the test pattern is a ruled line test pattern in which a ruled line parallel to each nozzle row is printed;
• and
• the processing section detects, as an amount of landing deviation caused by the nozzle row to be adjusted, an amount of deviation between a reference line on the virtual two-dimensional scale, the reference line corresponding to a particular row in the area sensor, and the ruled line test pattern imaged as the imaged test pattern.