Calibration method

A calibration method comprising:

• acquiring medium information relating to a medium on which printing of an image is to be executed by liquid ejected in a droplet state;
• specifying a type of the medium by collating the acquired medium information with structure data, the structure data being data relating to structure models of the medium corresponding to each of a plurality of types of the medium;
• executing a first simulation of changing, at least once, at least one of a plurality of physical property conditions, which are conditions relating to a physical property of the liquid;
• ejecting the liquid onto the medium with respect to the structure model corresponding to type of the specified medium;
• capturing a post image of the medium after ejecting the liquid onto the medium;
• acquiring permeation information relating to a permeation state of the liquid ejected onto the medium by analyzing the post image, wherein the permeation information includes a trace formed on a surface of the medium when liquid droplets deposited to the medium permeate into the surface of the medium;
• estimating the physical property condition of the liquid by collating the acquired permeation information with results of the first simulation;
• executing, based on the estimated physical property condition, a second simulation of changing, at least once, at least one of ejection conditions relating to ejection of the liquid;
• and
• displaying, based on results of the second simulation, a plurality of virtual print results, which are virtual print results when printing is performed on the medium based on each of the ejection conditions.