Printing apparatus, method for controlling printing apparatus, and storage medium

A method for controlling a printing apparatus including

• a printhead configured to print an image for characteristic detection onto a printing medium containing foaming particles by ejecting a foaming promotion liquid and a colored liquid to the printing medium, the image for characteristic detection having at least N unit regions (where N is three or greater), the colored liquid being applied to the at least N unit regions in equal amounts, and the foaming promotion liquid being applied to the at least N unit regions in amounts varying in stages,
• a foaming unit configured to foam the foaming particles contained in the printing medium after the image for characteristic detection is printed by the printhead, and
• a scan unit configured to scan the image for characteristic detection after the foaming particles are foamed by the foaming unit, the scan unit obtaining, as scan results of the image for characteristic detection, correspondences between the at least N unit regions and scan values of the colored liquid in the respective at least N unit regions, the correspondences including a region where a scan value obtained by the scan unit increases and a region where a scan value obtained by the scan unit decreases,
• the method comprising calculating a correction value for correcting an application amount of the foaming promotion liquid based on the scan results, the calculating including calculating the correction value based on a first density value corresponding to a first unit region of the at least N unit regions which is where the scan unit obtains a lowest scan value.

A non-transitory computer readable storage medium storing a program for causing a computer to execute a method for controlling a printing apparatus including

• a printhead configured to print an image for characteristic detection onto a printing medium containing foaming particles by ejecting a foaming promotion liquid and a colored liquid to the printing medium, the image for characteristic detection having at least N unit regions (where N is three or greater), the colored liquid being applied to the at least N unit regions in equal amounts, and the foaming promotion liquid being applied to the at least N unit regions in amounts varying in stages,
• a foaming unit configured to foam the foaming particles contained in the printing medium after the image for characteristic detection is printed by the printhead, and
• a scan unit configured to scan the image for characteristic detection after the foaming particles are foamed by the foaming unit, the scan unit obtaining, as scan results of the image for characteristic detection, correspondences between the at least N unit regions and scan values of the colored liquid in the respective at least N unit regions, the correspondences including a region where a scan value obtained by the scan unit increases and a region where a scan value obtained by the scan unit decreases,
• the method comprising calculating a correction value for correcting an application amount of the foaming promotion liquid based on the scan results, the calculating including calculating the correction value based on a first density value corresponding to a first unit region of the at least N unit regions which is where the scan unit obtains a lowest scan value.