Abstract: An information processing device includes a processor configured to acquire a first characteristic value indicating a shape characteristic of a surface of a medium, and calculate, based on the first characteristic value, a contact angle of a droplet with respect to the medium.

Abstract: An information processing apparatus includes a processor configured to: acquire physical property information on physical properties of a recording medium and physical properties of ink to be ejected onto the recording medium and setting information on a setting of a device configured to eject the ink onto the recording medium; derive an action amount using the physical property information and the setting information, the action amount relating to action of the recording medium applied by the ink ejected onto the recording medium; and output the action amount.