Abstract: A multi-touch mouse includes a mouse body, a touch pad, and a controlling unit. In a case that the touch pad is not touched and the touch state is OFF, the multi-touch mouse is in a conventional two-dimensional mouse mode. In a case that the touch state of the touch pad is ON in response to a touch action and the mouse body is moved, the controlling unit switches the control mode of the multi-touch mouse to a touch gesture control mode and generates a touch gesture command.

Abstract: A spacing interval control method is used in a sheet laminating apparatus for controlling a constant spacing interval between any two adjacent ones of multiple documents. The sheet laminating apparatus includes an automatic document feeding mechanism and a sheet laminating mechanism. By means of multiple sensors within the automatic document feeding mechanism, multiple documents are successively transported from the automatic document feeding mechanism to the sheet laminating mechanism at a constant spacing interval between any two adjacent ones of multiple documents. As a consequence, the documents after being heated or pressed by the sheet laminating mechanism will be cut into multiple separate and identical-sized laminated documents.

Abstract: A printing device with a marking function is provided. The printing device includes a printing module, an identification module and a marking member. The printing module is used for printing images on a transfer paper, thereby producing a barcode paper. The identification module is used for scanning the barcode paper, and judging the printing quality of the barcode paper. If the printing quality of the barcode paper is unqualified, the marking member produces a mark on the barcode paper. In addition, the barcode paper is successively transported through the printing module, the identification module and the marking member.

Abstract: A retard roller and a retard roller module are provided. The retard roller is used in an automatic document feeder for providing a frictional force to separate plural documents from each other. Unidirectional rotation of the retard roller is permitted. Due to the unidirectional rotation, the contact surface of the retard roller can be switched. During the sheet-feeding process, the document is contacted with a specified contact surface. By rotating the retard roller, the document is contacted with another contact surface.