Printing device, printing method, and program

A printing method of a printing device including a driving motor that applies a driving power rotating a roll body in which a medium is rolled, a holder that holds the roll body and that transfers the driving power of the driving motor to the roll body, a transport motor that applies a driving power transporting the medium, a transport roller that is provided further to the downstream side than the roll body in a transport direction of the medium and transfers the driving power of the transport motor to the medium, and a looseness amount acquiring unit that acquires an amount of looseness between the holder and the transport roller, the method comprising:

• acquiring the amount of looseness between the holder and the transport roller using a sensor which detects a position of the medium in a vertical direction, the sensor being arranged extending from above the medium to below the medium when the medium is tight;
• controlling the driving motor on the basis of the amount of looseness acquired by the looseness amount acquiring unit when the amount of looseness is equal to or more than a predetermined amount of looseness;
• and
• controlling the driving motor on the basis of tension between the holder and the transport roller when the amount of looseness is less than the predetermined amount of looseness.

A program executed on a printing device including a driving motor that applies a driving power rotating a roll body in which a medium is rolled, a holder that holds the roll body and that transfers the driving power of the driving motor to the roll body, a transport motor that applies a driving power transporting the medium rolled out from the roll body, a transport roller that is provided further to the downstream side than the roll body in a transport direction of the medium and transfers the driving power of the transport motor to the medium, and a looseness amount acquiring unit that acquires an amount of looseness between the holder and the transport roller, the program causing the printing device to execute:

• acquiring the amount of looseness between the holder and the transport roller using a sensor which detects a position of the medium in a vertical direction, the sensor being arranged extending from above the medium to below the medium when the medium is tight;
• controlling the driving motor on the basis of the amount of looseness acquired by the looseness amount acquiring unit when the amount of looseness is equal to or more than a predetermined amount of looseness;
• and
• controlling the driving motor on the basis of tension between the holder and the transport roller when the amount of looseness is less than the predetermined amount of looseness.