Patent ID: 8085413

Claim:
A printing system which prints by outputting, to a printer via an adaptor, image data held by an image supply device, the adaptor, comprising a first interface configured to communicate with the printer by a first communication protocol, and a second interface configured to communicate with the image supply device by a second communication protocol different from the first communication protocol; and the printing system being configured to operate in a first operation mode in which image data from the image supply device is received by the second interface, and before completion of receiving the image data by the second interface, a print job for printing image data that is received before the completion of receiving the image data by the second interface is issued from the adaptor to the printer via the first interface; and a second operation mode in which image data from the image supply device is received by the second interface, and after completion of receiving the image data by the second interface, a print job for printing image data whose reception has been completed by the second interface is issued from the adaptor to the printer via the first interface; the printing system comprising: a selection unit configured to select either of the first operation mode and the second operation mode in which the adaptor issues the print job; and a switching unit configured to switch between the first operation mode and the second operation mode in accordance with a selection result of the selection unit, wherein the selection unit selects either the first operation mode or the second operation mode based on at least one of a file name, an image format type, a transfer time and accessory information of the image data received from the image supply device.