There are provided a plate-making sheet and a printing device for printing on the plate-making sheet. The plate-making sheet is in the form of a strip and for being printed with stamp characters to be engraved on a stamping face of a stamp, in parallel with a process for making the stamp, for permitting checking of the stamp characters and for indication of the stamp characters on a back surface of the stamp. The plate-making sheet comprises a backing sheet, and an adhesive sheet laminated on the backing sheet and having a surface to be printed with the stamp characters. The surface of adhesive sheet is formed with a character check area to be printed with the stamp characters for permitting the checking of the stamp characters, and at least one indication character area to be printed with the stamp characters for the indication of the stamp characters. In the printing device, a printing mechanism prints stamp characters in a character check area and at least one indication character area. A feeding mechanism feeds the plate-making sheet to the printing mechanism. A sensor detects feed of the plate-making sheet to the printing mechanism.