Mark group

The utility model provides a mark group which comprises a plurality of marks, the marks are used for being arranged on a printing bedplate and are in one-to-one correspondence with printing devices generating the marks, and each mark comprises a number identification part and a position identification part. The number identification parts are used for providing number information of the printing devices generating the marks, and the number identification parts of different marks are different; and the position identification part is used for providing the position of the mark on the printing platen. Compared with the prior art, the mark group has the advantages that the mark group is provided with the number identification part beneficial to identifying and printing the mark group and the position identification part used for identifying the mark position and aligning, and the two parts are separately identified, so that image data identification can be facilitated, the processing speed can be improved, and a