Patent ID: 6563611
Filing Date: 2003-05-13
Classification: H04N

Abstract:
A double side scanner module comprising:a scan station comprising a glass window having a first end and a second end, and a pinch roller located against the glass window, wherein the pinch roller rotates in a first direction to guide an original from the first end to the second end of the glass window and the pinch roller rotates in a second direction to guide the original from the second end to the first end of the glass window; paper feeding means comprising a first paper tray for placing originals, and a first roller against the first paper tray, wherein the first roller rotates in the first direction to sequentially guide each of the originals from the first paper tray into the first end of the glass window; inversion means comprising a fixed loop path having an input path and an output path, a third roller in the input path, and a forth roller in the output path, wherein the third roller and the forth roller rotate in the first direction to guide each of the originals from the second end of the glass window into the input path and through the out path then to the second end of the glass window, thereby to turn the original upside down, and the distance between the pinch roller and the inversion means is larger than a length of an original; a document sensor installed close to the mouth of the output path of the inversion means for sending a control signal to the pinch roller upon sensing a front end of the original, whereby the pinch roller is rotated in the second direction to convey the original from the second end to the first end of the glass window; paper output means comprising a second paper tray for placing originals and a second roller against the second paper tray, wherein the second roller rotates in the second direction to sequentially guide each of the originals from the first end of the glass window into the second paper tray; and image information reading means disposed at an outer side of the glass window for reading an image on a first side of the original upon the original is moving progressively from the first end to the second end of the glass window and for reading an image on a second side of the original upon the original is moving progressively from the second end to the first end of the glass window.