Patent ID: 8223366

Claim:
A printing system comprising: an image file standard determining unit that is configured to determine whether image data subject to printing is created in conformity with a prescribed image file standard; an additional information determining unit that is configured to refer to additional information attached to the image data and determine whether the image data is created in a prescribed image data format based on the additional information; an printing data creating unit that creates printing data based on the image data that is in conformity with the prescribed image file standard and the prescribed image data format; a printing unit that prints an image based on the printing data created by the printing data creating unit; an interface that is connectable to an external storage medium that stores the image data; and an instruction unit that is configured to instruct the printing unit to print the image, wherein the image file standard determining unit performs determination with respect to the image data stored in the external storage medium connected to the interface, wherein when the external storage medium is connected to the interface, and when the image file standard determining unit determines that the image data is created in conformity with the prescribed image file standard, the additional information determining unit performs determination with respect to the image data stored in the external storage medium, wherein when the additional information determining unit determines that the image data is created in the prescribed image data format, the instruction unit instructs the printing unit to print the image based on the image data.