Image Number 6 for United States Patent #4734713.
A thermal printer is provided wherein data inputted from a data reader, such as a pen scanner, is compared with previously stored data. In the event that a match occurs, the printer prints predetermined information such as a sorting code on a thermal print medium. The thermal printer has a data input, data memory, program memory and an I/O port for communication with external devices. A controller controls the various components and directs the printer to print when the match occurs. Should a match not occur, the non-matching data is stored in data memory. The print medium such as a label or the like, may then be affixed to the same article or merchandise from which the data reader initially read the data.