US Patent 7570375 Printing system

A printing system includes a printing device and a controlling system. The printing device is capable of printing images on a recording sheet. The printing device includes a first sheet type setting system that sets first sheet data representing a type of the sheet. The controlling device is capable of communicating with the printing device, and includes a second sheet type setting system that sets second sheet data representing a type of the sheet. The printing system further includes a comparing system that compares the first sheet data with the second sheet data. The printing device performs the printing operation in accordance with a comparison result of the comparing system.