Patent ID: 7330691

Claim:
An image scanning apparatus comprising: a conveying unit for conveying a document on which an image is recorded, along a predetermined conveying path; a scan unit disposed on the conveying path of the document for scanning the image recorded on the document; a control unit for controlling the conveying unit and the scan unit, wherein the control unit comprises a main circuit board disposed at one side of the conveying path of the document for controlling operations of the scan unit and converting the scanned image into digital image information, a sub-circuit board disposed on the conveying path of the document for controlling operations of the conveying unit, and an integrated circuit board disposed at an opposite side of the conveying path of the document, and wherein the sub-circuit board comprises a high voltage signal area on which a high voltage signal is routed and which is disposed closest to the main circuit board to group high voltage components at the one side of the conveying path of the document, and a low voltage signal area on which a low voltage signal is routed and which is disposed closest to the integrated circuit board to group low voltage components at the opposite side of the conveying path of the document; and at least one document sensor disposed on the conveying path of the document and electrically coupled to the sub-circuit board.