Patent ID: 8873092

Claim:
A printing system, comprising: a plurality of terminal devices configured to generate print data representing an image; a printing device configured to print the image on a sheet, the printing device having a first storage; a host device in communication with the plurality of terminal devices and the printing device, the host device having a second storage configured to store the print data; a user authentication unit configured to acquire user input of authentication data, and execute user authentication based on the user-input authentication data in response to a print request, printing of the image being executed after the authentication is successfully completed; a first judging unit configured to judge whether the print data stored in the first storage is to be deleted before the print request is received, wherein each of the plurality of terminal devices comprises a terminal side transmission unit configured to transmit the print data to the host device, wherein the host device comprises a host side communication unit which is configured to: receive the print data from the plurality of terminal devices and store the received print data in the second storage; transmit the received print data to the printing device before the user authentication is executed; and if a request to transmit print data is received from the printing device, transmit the print data to the printing device, wherein the printing device comprises: a printing side receiving unit configured to receive the print data from the host device and store the received print data in the first storage; a first deletion unit configured to delete the print data which is judged to be deleted by the first judging unit from the first storage; and a second judging unit configured to judge, when the authentication data is acquired by the user authentication unit and the print request is made, whether the print data has been deleted, wherein, the printing device is configured to print images on the sheet based on the print data stored in the first storage when the second judging unit judges that the print data has not been deleted and is stored in the first storage; and wherein the printing device is configured to transmit the request to transmit print data to the host device and is configured to obtain the print data, and is configured to print images on the sheet based on the obtained print data when second judging unit judges that the print data has been deleted and is not stored in the first storage.