Recording apparatus, recording/reading system and recording method

A recording apparatus comprising:

• a first nozzle row, a second nozzle row, a third nozzle row and a fourth nozzle row in which a plurality of nozzles configured to eject liquid to a medium are arranged in an arrangement direction of the nozzles;
• and
• a control unit configured to control ejection of the liquid by the first nozzle row, the second nozzle row, the third nozzle row and the fourth nozzle row, wherein
• when the control unit records a first pattern including a first normal region and a first overlapping region on the medium by controlling the first nozzle row and the second nozzle row and records a second pattern including a second normal region and a second overlapping region on the medium by controlling the third nozzle row and the fourth nozzle row, the control unit forms the first overlapping region at a position overlapping the second normal region as viewed in a longitudinal direction, the first normal region being a region where a raster line having the longitudinal direction corresponding to a direction intersecting an arrangement direction of the nozzles is formed using the first nozzle row or the second nozzle row, the first overlapping region being a region where the raster line is formed using the first nozzle row and the second nozzle row, the second normal region being a region where the raster line is formed using the third nozzle row or the fourth nozzle row, the second overlapping region being a region where the raster line is formed using the third nozzle row and the fourth nozzle row.

A recording method of a recording apparatus configured to perform recording by controlling ejection of liquid by a first nozzle row and a second nozzle row including a plurality of nozzles configured to eject the liquid to a medium, the recording method comprising:

• a pattern recording step of recording a pattern on the medium by causing the first nozzle row and the second nozzle row to perform scan of ejecting the liquid while moving forward or backward along a predetermined main scanning direction, wherein
• in the pattern recording step,
• when recording a first pattern including a first overlapping region and a first normal region on the medium by controlling the first nozzle row and recording a second pattern including a second overlapping region and a second normal region on the medium by controlling the second nozzle row, the first overlapping region is formed at a position overlapping the second normal region as viewed in a longitudinal direction, the first overlapping region being an overlapping region where a raster line having the longitudinal direction corresponding to the main scanning direction is formed by performing the scan m times, the first normal region being a normal region where the raster line is formed by performing the scan n times, n being smaller than m, the second overlapping region being the overlapping region, the second normal region being the normal region.

A recording method of a recording apparatus configured to perform recording by controlling ejection of liquid by a first nozzle row, a second nozzle row, a third nozzle row and a fourth nozzle row in which a plurality of nozzles configured to eject the liquid to a medium are arranged in an arrangement direction of the nozzles, the recording method comprising:

• a pattern recording step of recording a pattern on the medium by causing the first nozzle row, the second nozzle row, the third nozzle row and the fourth nozzle row to eject the liquid, wherein
• in the pattern recording step,
• when recording a first pattern including a first normal region and a first overlapping region on the medium by controlling the first nozzle row and the second nozzle row and recording a second pattern including a second normal region and a second overlapping region on the medium by controlling the third nozzle row and the fourth nozzle row, the first overlapping region is formed at a position overlapping the second normal region as viewed in a longitudinal direction, the first normal region being a region where a raster line having the longitudinal direction corresponding to a direction intersecting an arrangement direction of the nozzles is formed using the first nozzle row or the second nozzle row, the first overlapping region being a region where the raster line is formed using the first nozzle row and the second nozzle row, the second normal region being a region where the raster line is formed using the third nozzle row or the fourth nozzle row, the second overlapping region being a region where the raster line is formed using the third nozzle row and the fourth nozzle row.