CARTRIDGE

The present application relates to the technical field of printers. Provided is a cartridge. A cartridge (10) comprises a main body portion, wherein a movable snap-fit member (17, 17b, 17c) matching a clamping mechanism is arranged on the side of the main body portion opposite a first direction; and the movable snap-fit member comprises a movable transmission portion (172) and a clamping portion (173, 173b), wherein the transmission portion is used for matching an abutting portion (2821) of the clamping mechanism, the clamping portion is provided with a limiting protrusion (1731, 1731b) matching a recess (2811a, 2811b) of the clamping mechanism, and the transmission portion is configured to move in a direction away from the main body portion under the action of the abutting portion, such that the limiting protrusion is disengaged from the recess. The transmission portion of the cartridge moves in the direction away from the main body portion during the unlocking process, so as to prevent the transmission port