A printing apparatus includes a data storage, a first printer, a communication interface, and a controller. The controller is configured to determine a security level of print data received, based on security setting data for the print data, when determining that the security level is a first security level, control the first printer to print the print data with the decolorable material and control the data storage to store the print data and the security setting data for the print data, and when determining that the security level is a second security level that is lower than the first security level, control the first printer to print the print data with the decolorable material and control the data storage not to store the print data and store the security setting data for the print data in the data storage.