Patent ID: 7689461

Claim:
A printing apparatus for printing a receipt to a recording medium such as paper in response to print data received from a computer including first print data representing transaction information having a paper cut command appended thereto and second print data representing additional information print data to be printed in addition to the first print data having a predetermined identifier added thereto, comprising: a receiving unit for receiving print data from said computer; a transportation unit for conveying said recording medium on which the receipt is to be printed; a printing unit for printing the receipt synchronized to the operation of said transportation unit; a cutter unit for cutting the printed receipt from the recording medium in response to said paper cut command contained in said first print data; a first control unit for analyzing the print data received in said receiving unit to determine if the print data is first print data and for delaying the timing in the execution of the paper cut command when the print data is determined to be said first print data with said first control unit having a delay time counter for timing the delay of the paper cut command when the print data is determined to be said first print data; a detection unit responsive to the delay in the execution of the paper cut command to determine if the print data received in said receiving unit while execution of the paper cut command is being delayed is second print data containing said predetermined identifier; and a second control unit for controlling the printing unit and the cutter unit in response to the output of said detection unit to cause the paper cut command to be executed after printing the second print data provided the received print data is determined to be second print data containing said predetermined identifier and for causing the paper cut command to be executed before printing the received print data when the received print data does not contain said predetermined identifier.