1. An image scanning device comprising: a scanning unit that scans an original document with a scanning condition to produce image data; a first storage unit that stores a specific condition used by the scanning unit for scanning a specific document, the specific condition including a limited requirement required by the specific document, and a limited scanning condition conforming to the limited requirement; a first determination unit that determines whether the scanning condition satisfies the limited requirement for the specific document; a control unit that causes the scanning unit to scan the original document with the scanning condition, if the first determination unit determines that the scanning condition satisfies the limited requirement for the specific document, the control unit causing the scanning unit to scan the original document with an initial condition to produce initial image data if the first determination unit determines that the scanning condition does not satisfy the limited requirement for the specific document; and a second determination unit that determines based on the initial image data whether the original document is the specific document, wherein the control unit causes the scanning unit to scan the original document with the scanning condition, if the second determination unit determines that the original document is not the specific document, and the control unit reads the specific condition from the first storage unit and causes the scanning unit to scan the original document with the limited scanning condition if the second determination unit determines that the original document is the specific document.
1. An image scanning device comprising: a scanning unit that scans an original document with a scanning condition to produce image data; a first storage unit that stores a specific condition used by the scanning unit for scanning a specific document, the specific condition including a limited requirement required by the specific document, and a limited scanning condition conforming to the limited requirement; a first determination unit that determines whether the scanning condition satisfies the limited requirement for the specific document; a control unit that causes the scanning unit to scan the original document with the scanning condition, if the first determination unit determines that the scanning condition satisfies the limited requirement for the specific document, the control unit causing the scanning unit to scan the original document with an initial condition to produce initial image data if the first determination unit determines that the scanning condition does not satisfy the limited requirement for the specific document; and a second determination unit that determines based on the initial image data whether the original document is the specific document, wherein the control unit causes the scanning unit to scan the original document with the scanning condition, if the second determination unit determines that the original document is not the specific document, and the control unit reads the specific condition from the first storage unit and causes the scanning unit to scan the original document with the limited scanning condition if the second determination unit determines that the original document is the specific document. 8. The image scanning device according to claim 1 , wherein the initial image data has a color distribution, and the second determination unit performs the determination based on the color distribution.