Patent ID: 8441666

Claim:
A printing control method, comprising: adding a process ID request command to an end of print data for one page that is sent from a host computer to a connected printer, the process ID request command requesting from the printer a completion report denoting that processing of the print data was completed; storing the one page of print data to which the process ID request command was added; sending the print data to which the process ID request command was added to the printer; receiving the completion report that is sent from the printer when the print data processing was completed; deleting the stored one page of print data when the completion report is received; and monitoring if a printing interrupt event occurs while the printer is printing the one page of print data, and, if a printing interrupt event is detected, adding a process ID request command to the stored one page of print data sent to the printer that is incremented form the process ID request command, sending the stored one page of print data including the incremented process ID request command to the printer, and deleting the stored page of print data including the incremented process ID request command when a completion report for the stored one page of print data including the added processing ID request command is received.