Corrugated paperboard printer and corrugated paperboard box making machine

A corrugated paperboard printer comprising:

• a chamber which reserves ink;
• an anilox roll onto which the ink is transferred from the chamber;
• a printing roll provided with a printing plate, the printing roll being configured to allow the ink to be transferred from the anilox roll onto the printing plate, and transfer the ink on the printing plate onto a corrugated paperboard sheet to print the corrugated paperboard sheet;
• and
• a pressing device is configured to apply a pressing force to press the chamber toward the anilox roll;
• wherein the chamber comprises:
• a chamber frame which reserves the ink;
• and
• a doctor blade attached to the chamber frame and configured to scrape the ink transferred onto the anilox roll to adjust a thickness of the ink after the transfer;
• and
• wherein the pressing device is configured to apply a first pressing force, and a second pressing force which is greater than the first pressing force, respectively, to a first pressing area and a second pressing area in a back surface of the chamber frame, wherein in a state in which no pressing force is applied by the pressing device, bending occurring in the chamber frame due to a load transmitted from the printing roll to the chamber frame via the anilox roll as printing is performed to the corrugated paperboard sheet is greater in the second pressing area than in the first pressing area.