Patent ID: 7570375

Claim:
A printing system, comprising: a printing device capable of printing images on a recording sheet, the printing device including a first sheet type setting system that sets first sheet data representing a type of the sheet; a controlling device that controls the printing device to perform a printing operation, the controlling device being capable of communicating with the printing device, the controlling device including a second sheet type setting system that sets second sheet data representing a type of the sheet; a comparing system that compares the first sheet data with the second sheet data; and an operating sheet data determining system configured to determine, in accordance with a comparison result of the comparing system, operating sheet data representing the type of the sheet to be referred to when the printing operation is performed, the printing device performing the printing operation in accordance with the operating sheet data, wherein the controlling device includes the comparing system, the controlling device receiving the first sheet data from the printing device, the controlling device controlling the printing device in accordance with the comparison result of the comparing system, wherein the controlling device includes a priority setting system capable of giving priority to one of the first sheet data and the second sheet data, the controlling device controlling the printing device in accordance with the sheet data that is given priority, and wherein if the first sheet data is given priority, the printing device performs the printing operation in accordance with the second sheet data set by the second sheet type setting system of the controlling device if the first sheet data is different from the second sheet data and if the first sheet data matches a predetermined condition.