Printing consumable

The embodiment of the utility model provides a printing consumable, and relates to the technical field of printing. The printing consumable comprises a margin detection structure, and the margin detection structure comprises a base, a blocking piece and a detection cap. The blocking piece is a deformable piece and is configured to block the contact between the detection cap and the ink; the detection cap has a cap body, a central portion, and a plurality of extension portions. The detection cap can be prevented from making contact with ink through the blocking piece, the detection cap does not make direct contact with the ink, liquid substances can be prevented from being separated out of the outer side of the detection cap, short circuit of an internal circuit of the device body is avoided, the image forming device cannot be damaged, and normal use of the image forming device can be guaranteed; meanwhile, the plurality of extension parts of the detection cap are arranged at intervals along the edge of the ce