The invention provides an image scanning apparatus stabilizing a behavior of a document in scanning an image and enabling to promote image scanning accuracy. The oxygen separation system includes an entry port for ambient air, and at least two separate exhaust ports through which separate exhaust streams are drawn by separate suction sources. For the purpose of coding selections of reference pictures within the buffer, the pictures are organized into two, potentially overlapping, lists of reference pictures. The drink spout system may additionally or alternatively include a valve assembly that is configured to prevent drink fluid from being unintentionally dispensed from the drink container, such as when the drink container is pierced by the drink spout system or when the drink container is tipped over or dropped. The fiber lens is then fused in response to this diffraction pattern.