Printing apparatus, printing system, and printed material manufacturing method

A printing system comprising:

• an image processing apparatus;
• and
• a printing apparatus capable of communicating with the image processing apparatus, wherein
• the image processing apparatus includes:
• a receiving unit that receives setting information containing an adjustment target area for adjusting surface roughness and surface roughness of the adjustment target area on a surface of an ink layer formed on a processing target surface side of a processing object;
• and
• a generating unit that generates print data containing the setting information and image data of an image formed with ink, and
• the printing apparatus includes:
• a plasma processing unit that performs plasma processing on the processing target surface side of the processing object;
• a recording unit that ejects ink to the processing target surface side of the processing object based on the image data;
• an acquiring unit that acquires the setting information;
• and
• a plasma control unit that controls the plasma processing unit to perform plasma processing on a processing area corresponding to the adjustment target area, on the processing target surface side of the processing object, with an amount of plasma energy for obtaining the set surface roughness on the surface of the ink layer formed on the processing area.