Print system and control method thereof

A control method of a print system,

• the print system including
• a recording head configured to eject a liquid droplet for forming a print image onto a medium,
• a drive unit configured to change a relative positional relationship between the recording head and the medium, and
• a read unit configured to read a state of the liquid droplet landed on the medium in a reading range,
• the print system being configured to control ejection of the liquid droplet from the recording head and execute processing based on a reading result of the read unit,
• the print system further including
• a holding unit configured to receive vibration transmitted to the medium, and
• a reference marker adding unit provided at the holding unit and configured to display information indicating whether a reference marker falls within the reading range, the reference marker indicating a reference of a landing position of the liquid droplet onto the medium,
• the control method comprising:
• acquiring the reading result including the reference marker;
• and
• executing the processing with the reference marker included in the reading result as the reference of the landing position.