Cutter device and printing apparatus

A cutter device comprising:

• a pair of pulleys including a first pulley and a second pulley;
• an endless belt spanning the pair of pulleys;
• a movable blade;
• a holder configured to hold the movable blade, engage with the endless belt, and move in a movement direction in accordance with a movement of the endless belt;
• a first sensor configured to detect that a position of the movable blade is at a first position on the first pulley side;
• and
• a second sensor configured to detect that the position of the movable blade is at a second position on the second pulley side, wherein
• the first sensor and the second sensor are disposed at positions overlapping with the holder in an up-down direction intersecting the movement direction,
• the holder includes a first arm protruding from a holder main body toward the first position and a second arm protruding from the holder main body toward the second position,
• the first arm is positioned at a position facing a detection portion of the first sensor when the holder is positioned at the first position, and
• the second arm is positioned at a position facing a detection portion of the second sensor when the holder is positioned at the second position.