Abstract: A clamping device includes a seat body, two clamping elements, at least one spring, a gear, a turning wheel, an impeding element, and a release button. The seat body has a front casing and a rear casing. Each clamping element has a clamping body with a rack. The spring is disposed between the seat body and one of the two clamping elements. The gear and the turning wheel are pivoted in the seat body together. The gear is engaged with the two racks, and the turning wheel has a contact surface formed therearound. The impeding element is pivoted in the seat body, wherein the impeding element has an impeding surface that contacts the contact surface. The release button is movably disposed on the seat body and connected with the impeding element. Hence the clamping device's whole structure is simple, and the cost of the clamping device is reduced.

Abstract: A sucking disc apparatus includes a body, a sucking disc, a pulling rod, a spring, and an operation element. The body includes a pressing part and a protruding part protruding from the top of the pressing part. The sucking disc is located at the bottom of the pressing part of the body. The pulling rod is located in the body and has a rectangular slot hole. The spring is located between the body and the sucking disc. The operation element includes an operation part and a cam part. The operation element is pivoted with the protruding part of the body via a pivoting shaft. Thereby, the rectangular slot hole is hidden in the sucking disc apparatus, the appearance of the sucking disc apparatus is not affected, and muck does not drop into the rectangular slot hole so that the movement of the sucking disc is smooth.

Abstract: The auxiliary frame has a plurality of frame bars made of plastic or metallic material. Each of the frame bars has a hollow inside and has a crossed reinforcing rib installed therein. One side of each of the frame bars forms an embowed reinforcing girder to achieve better reinforcing effect. A through hole and a snap groove are disposed at each side of the reinforcing girder. Two of the frame bars are disposed at opposite sides, while another frame bar is disposed at the top ends of the two frame bars. A fixing element is installed between the bottom ends of the two frame bars at two sides. The two ends of the frame bar at top end are screwed with the two frame bars via a plurality of screws vertically penetrating the through holes at the top ends of the two frame bars. The bottom ends of the two frame bars are screwed with the two ends of the fixing element via a plurality of screws vertically penetrating the through holes at the bottom ends of the two frame bars.

Abstract: The present invention is related to a method and an apparatus for distortion detection of a scanned image. The method for distortion detection of a scanned image comprises: a) obtaining a first value representative of a first scanning position for the image; b) obtaining a second value representative of a second scanning position for the image; and c) comparing the first and second values to determine there is a line-drop situation when the first and second values obtained in a sequential order are not predeterminedly sequential values. The apparatus for distortion detection of a scanned image comprises a value generator generating two values respectively representative of two scanning positions for the image, and a comparing unit for comparing the two values to determine there is a line-drop situation when the two values obtained in a sequential order are not predeterminedly sequential values.

Abstract: The present invention is an image scanner adapted to be used for scanning a color image which includes an image sensor which converts the scanned color image into three analog voltage signals, a clock generator which provides a clock for the image sensor outputting the three analog voltage signals in response to the clock, three amplifying switches electrically connected to the image sensor through three respective independent signal paths and respectively having three disablers thereon for respectively enabling/disabling the amplifying switches by utilizing an impedance thereof in order to respectively amplify the three analog voltage signals and transmit one of the amplified voltage signals therethrough at a time, an analog-to-digital converter electrically connected to the three amplifying switches which respectively converts the three analog voltage signals into digital signals and a data-processing device electrically connected to the analog-to-digital converter which receives and stores the digital sign