Printing device and control method of a printing device

A printing device comprising:

• a media conveyance unit that conveys a print medium;
• a reel spindle that supports a media roll of the print medium wound into a roll;
• a reel driver that drives the reel spindle and turns the media roll;
• and
• a slack detector that detects the amount of slack in the slack of the print medium hanging vertically down from the outside circumference of the media roll;
• and
• a controller that controls the media conveyance unit to convey the print medium,
• controls the slack detector to detect the slack while the print medium is conveyed by the media conveyance unit,
• drives the reel driver at a first speed, or a second speed that is greater than the first speed, when the amount of slack is detected to be between a first threshold and a second threshold that is less than the first threshold, and
• when the slack is detected to be less than the second threshold,
• starts driving the reel driver at the second speed if the reel driver is being driven at the first speed, and
• stops driving the reel driver if the reel driver is being driven at the second speed.