A receipt printer includes a printing device, a communication interface configured to receive print data, and a processor. The processor is configured to generate text receipt data representative of text data included in the print data received by the communication interface, generate code symbol data corresponding to an optically-readable code symbol indicative of the text receipt data, based on the text receipt data, and control the printing device to print a receipt image on a receipt sheet based on the print data received by the communication interface and the optically-readable code symbol based on the code symbol data.