Patent ID: 7657031

Claim:
A method for printing of sensitive data, comprising the steps of: at a workstation encrypting the sensitive data to be printed; transferring the encrypted sensitive data to be printed along with non-sensitive data to be printed to a printing device having a printing unit; decrypting the sensitive data to be printed to create decrypted sensitive data and in immediate temporal succession converting the decrypted sensitive data to be printed into control signals for activation of the printing unit via rastering of the data into one or more raster images representing the control signals; storing the decrypted sensitive data in a non-volatile memory such that the decrypted sensitive data are distributed in a plurality of memory segments of the non-volatile memory, and storing a relationship of the memory segments in said non-volatile memory in a volatile memory as relationship data independently of the stored decrypted sensitive data so that without said relationship data, the decrypted sensitive data stored in said memory segments is not readable; and printing the non-sensitive data, and also printing the decrypted sensitive data based on the relationship data, with the printing unit on a recording medium.