Printing paper seasoning apparatus, method of seasoning of printing paper, and inkjet recording apparatus

A method of seasoning of printing paper, comprising the steps of:

• loading a plurality of sheets of the printing paper onto a loading table;
• covering over an upper side of a stack of the printing paper loaded on the loading table, with a ceiling plate;
• and
• blowing air by an air blowing device from a side face side into a paper accommodating region formed between the loading table and the ceiling plate which are arranged to oppose each other, so as to supply the air between sheets of the printing paper in the stack of the printing paper,
• wherein openings for expelling air are formed on a side plate arranged in a side face portion of the paper accommodating region, an opening ratio of an exhaust section including the openings is varied in a vertical direction of the paper accommodating region in such manner that the opening ratio on a lower side is made smaller than the opening ratio on an upper side, and the air blown by the air blowing device in a state where pressure of air flowing on a lower side of the paper accommodating region is higher than pressure of air flowing on an upper side of the paper accommodating region.