Printing system with dampers to vary vacuum suction through a vacuum plenum and related a devices, systems, and methods

A method comprising:

• transporting one or more print media through a deposition region of a printhead of a printing system, wherein the print media are held during the transporting against a movable support surface of a media transport device via vacuum suction through holes in the media transport device, the vacuum suction being communicated from a vacuum source to the holes via a vacuum plenum;
• ejecting print fluid from the printhead to deposit the ink to the print media in the deposition region;
• detecting a condition comprising one or more of:
• a sensed pressure in the vacuum plenum;
• an amount of the holes currently covered by print media;
• the number of print media currently being transported by the movable support surface;
• or
• image content associated with a current print job;
• and
• controlling an airflow control system to dynamically adjust an impedance of a damper arranged in the vacuum plenum based the detected condition such that the impedance of the damper is adjusted in response to a change in one or more of:
• the sensed pressure in the vacuum plenum;
• the amount of the holes currently covered by print media;
• the number of print media currently being transported by the movable support surface;
• or
• the image content associated with a current print job,
• wherein the impedance of the damper controls airflow between the vacuum source and the holes.