Printing control device and printing control method

A printing control device for a printing unit that forms a print image corresponding to print data by performing main scanning to move a nozzle line, in which a plurality of nozzles are arranged in a different direction from a main scanning direction, with respect to a print substrate in the main scanning direction and by performing sub-scanning to move the print substrate relative to the nozzle line in a sub-scanning direction, the printing control device comprising:

• a record density acquisition unit that acquires record density RD of the print image in a specific print region in which the print image is formed at the time of final main scanning before the sub-scanning of a longer distance than a pitch of the nozzles of the nozzle line in the sub-scanning direction based on the print data;
• and
• a sub-scanning control unit lengthens a sub-scanning distance in a case in which the record density RD is second record density higher than first record density more than a sub-scanning distance in a case in which the record density RD is the first record density when the sub-scanning which is the sub-scanning of the same printing scheme and is the sub-scanning of the longer distance than the pitch of the nozzles of the nozzle line in the sub-scanning direction is performed.

A printing control method for a printing unit that is capable of adjusting a gap g between a recording head having a nozzle line in which a plurality of nozzles are arranged in a different direction from a main scanning direction and a platen facing the recording head and supporting a print substrate and performs main scanning to move the recording head in the main scanning direction with respect to the print substrate and sub-scanning to move the print substrate in a sub-scanning direction relative to the recording head, the printing control method comprising:

• lengthening a sub-scanning distance in a case in which the gap g is a second gap broader than a first gap more than a sub-scanning distance in a case in which the gap g is the first gap when sub-scanning which is sub-scanning of the same printing scheme and is sub-scanning of a longer distance than a pitch of the nozzles of the nozzle line in the sub-scanning direction is performed.

A printing control method for a printing unit that forms a print image corresponding to print data by performing main scanning to move a nozzle line, in which a plurality of nozzles are arranged in a different direction from a main scanning direction, with respect to a print substrate in the main scanning direction and by performing sub-scanning to move the print substrate relative to the nozzle line in a sub-scanning direction, the printing control method comprising:

• acquiring record density RD of the print image in a specific print region in which the print image is formed at the time of final main scanning before the sub-scanning of a longer distance than a pitch of the nozzles of the nozzle line in the sub-scanning direction based on the print data;
• and
• lengthening a sub-scanning distance in a case in which the record density RD is second record density higher than first record density more than a sub-scanning distance in a case in which the record density RD is the first record density when the sub-scanning which is the sub-scanning of the same printing scheme and is the sub-scanning of the longer distance than the pitch of the nozzles of the nozzle line in the sub-scanning direction is performed.