A chromatape casket for a printing device, includes: a rectangular casket housing, defined by four corners, and having a print head notch, which is suitable to accomodate a print head supporter of the printing device, and a casket exit part abuting with the first corner of four corners adjacent to the print head notch. The casket housing includes a sensor part, which has a surface suitable to interact with a sensor array of the printing device, in order to identify at least a character of the chromatape casket, the sensor part situated at the second corner of four corners, the second corner and the first corner respectively located at the relative end of the diagonal.