Abstract: A transmission device of automatic document feeder includes a transmission gear assembly, a pickup transmission gear assembly, a paper-feed transmission gear assembly, a correction transmission gear assembly, a pressure transmission gear assembly and a turn-over transmission gear assembly. The transmission gear assembly includes a transmission roller, a first drive gear and a second drive gear. The pickup transmission gear assembly includes a pickup drive gear, a pickup swing arm and a pickup auxiliary swing arm. The paper-feed transmission gear assembly driven by the transmission gear assembly includes a paper-feed reverse gear and a paper-feed swing arm. And the correction transmission gear assembly and the paper-feed transmission gear assembly rotate towards the same direction. The pressure transmission gear assembly includes a pressure swing arm and a pressure actuating gear. The turn-over transmission gear assembly is driven by the first drive gear of the transmission gear assembly.

Abstract: An automatic document feeder includes a paper transmitting path for guiding documents, a driving motor for providing driving torque, a pickup device disposed at the upstream of the paper transmitting path, an output device disposed at the downstream of the paper transmitting path and transmitting rollers disposed along the paper transmitting path for transmitting the documents, a first driving gear disposed between the pickup device and the output device, a transmitting gear swing arm equipped with a transmitting gear set and axially hinged with the first driving gear to swing according to the driving torque between a first position meshing the transmitting gear set with the pickup device and a second position idling the transmitting gear set, an actuator connected with the output device and a braking device disposed on the output device for locking the transmitting gear swing arm according to the position of the output device.

Abstract: A paper feeding mechanism includes a mechanical frame, a gear assembly, a paper supply tray, a pickup assembly, a paper pressing assembly and a stopper assembly. The gear assembly includes a drive gear and a transmission gear. The paper pressing assembly includes a paper pressing frame, a paper pressing tray, a gear shaft, at least one swing arm and an elastic element. The stopper assembly includes a blocking element and a connecting element. The drive gear drives the transmission gear and the gear shaft to rotate, the connecting element drives the blocking element to move downward to make the blocking element realize a paper blocking function, and the drive gear breaks away from the drive gear, the elastic element pushes against the paper pressing tray to move downward, the blocking element breaks away from the paper supply tray to raise up for making the paper blocking function disappeared.

Abstract: A paper feeding device includes a lower housing, an upper housing, a pickup assembly, a separation assembly, a relay assembly, a paper friction mechanism, an elastic element, a paper speed detector, a first paper feeding assembly, a second paper feeding assembly, a transmission assembly, a motor and a control unit. The control unit controls the paper speed detector to detect paper feeding speeds and the paper speed detector sends signals to the control unit for determining paper feeding conditions. The control unit controls the motor to rotate, and the motor drives the pickup assembly, the relay assembly and the first paper feeding assembly to rotate by virtue of the transmission assembly, and the first paper feeding assembly drives the second paper feeding assembly to rotate, the control unit is capable of adjusting rotating speeds of the motor, so that the paper feeding speeds are stabilized.

Abstract: A paper feeding mechanism includes a frame, a drive assembly mounted to the frame, an input tray, a pickup assembly driven by the drive assembly, an elevating assembly and a control assembly. A front end of the input tray is pivoted to the frame, a bottom of the input tray has a pressing portion. The elevating assembly includes a gear assembly driven by the drive assembly, a rotating shaft driven by the gear assembly and located under the input tray, and an elastic element against the bottom of the input tray. The rotating shaft has a cam portion thereon and a notch formed between two ends of the cam portion. The control assembly includes a control system and a paper sensor detecting whether there is any paper on the input tray and control the drive assembly to drive the elevating assembly and the pickup assembly.

Abstract: A feeding apparatus includes a pickup roller arranged to pick and feed a medium downstream along a conveying path, a separating roller arranged downstream to the pickup roller for advancing the medium downstream, a brake roller arranged opposite to the separating roller, and a pressing structure arranged opposite to the pickup roller and operable to swing toward or away from the pickup roller according to the rotating direction of the brake roller. When the brake roller rotates for feeding mediums downstream, the pressing structure moves toward the pickup roller and applies a normal force required for picking the medium. But when the brake roller stops rotating downstream because multiple mediums are fed between the brake roller and the separating roller, the pressing structure moves away from the pickup roller and stops applying normal force, so as to control the medium-picking process.

Abstract: A feeding apparatus includes a pickup roller arranged to pick and feed a medium downstream along a conveying path, a separating roller arranged downstream to the pickup roller for advancing the medium downstream, a brake roller arranged opposite to the separating roller, and a pressing structure arranged opposite to the pickup roller and operable to swing toward or away from the pickup roller according to the rotating direction of the brake roller. When the brake roller rotates for feeding mediums downstream, the pressing structure moves toward the pickup roller and applies a normal force required for picking the medium. But when the brake roller stops rotating downstream because multiple mediums are fed between the brake roller and the separating roller, the pressing structure moves away from the pickup roller and stops applying normal force, so as to control the medium-picking process.

Abstract: A feeding apparatus includes a pickup roller arranged to pick and feed a medium downstream along a conveying path, a separating roller arranged downstream to the pickup roller for advancing the medium downstream, a brake roller arranged opposite to the separating roller, and a pressing structure arranged opposite to the pickup roller and operable to swing toward or away from the pickup roller according to the rotating direction of the brake roller. When the brake roller rotates for feeding mediums downstream, the pressing structure moves toward the pickup roller and applies a normal force required for picking the medium. But when the brake roller stops rotating downstream because multiple mediums are fed between the brake roller and the separating roller, the pressing structure moves away from the pickup roller and stops applying normal force, so as to control the medium-picking process.

Abstract: An automatic paper feed device includes a mechanical frame, a paper supply tray mounted to the mechanical frame, at least one motor mounted to one side of the mechanical frame, an upper cover, a stopper mechanism, a paper pressing mechanism, a transmission mechanism, a feed mechanism and a control mechanism. The stopper mechanism includes a blocking element and a torsion spring. The paper pressing mechanism includes a pressing board, at least one pressing roller and an elastic element. The feed mechanism is pivotally mounted to the paper supply tray. The control mechanism controls the motor to rotate, the rotation of the motor drives the transmission mechanism to support or break away from the pressing board to make the pressing board slide upward or downward with respect to the paper supply tray and further abut against or break away from the blocking element.

Abstract: A roller assembly includes a roller shaft, a roller base and at least one roller. The roller shaft defines at least one clipping slot. The roller shaft passes rearward through the roller base to rotatably mount the roller base to the roller shaft. An inside of the roller base extends forward to form an elastic arm. A free end of the elastic arm projects beyond a front surface of the roller base. The free end of the elastic arm defines a hook portion hooked in the clipping slot to restrain the roller base on the roller shaft. The roller is set around the roller base. When the roller assembly is disassembled, press down upon the free end of the elastic arm to make the hook portion project out of the clipping slot, so that the roller base together with the rollers is disassembled from the roller shaft.

Abstract: A transmission device for an automatic document feeder includes a driving gear set driven by a driving motor, a first swing arm equipped with a first driving roller set, a second swing arm equipped with a second driving roller set, and a one-way gear set driven by the driving gear set to keep transmitting rollers rotating in the same direction. The first swing arm is driven by the driving gear set and swingable between a first position and a second position to mesh the first driving roller set with a pickup device or an output device. The second swing arm is driven by the driving gear set and swingable between a third position and a fourth position to mesh the second driving roller set with the pickup device or the output device. When the first swing arm swings toward the first/second position, the second arm swings toward the fourth/third position.

Abstract: A paper feeding mechanism includes a mechanical frame, a drive assembly mounted to the mechanical frame, an input tray, a pickup assembly driven by the drive assembly, an elevating assembly and a control assembly. The elevating assembly mounted to the mechanical frame and pivoted to a bottom of the rear end of input tray includes a drive shaft, a gear assembly and an elastic element. The rotating shaft defines two cam parts projecting beyond the rotating shaft. The rotating shaft is capable of rotating to make the cam parts press downward on or break away from the input tray so as to drive the input tray to swing downward or swing upward under an elastic push action of the elastic element. The control assembly includes a control system and a paper sensor controlled by the control system for detecting whether there is any paper on the input tray.

Abstract: A translation system is connected with at least two translation service providers through internet and includes an image capture unit, a data transmission unit, a comparing unit, and a display unit. A translation method is achieved by the foregoing translation system and includes the steps: capturing original data of original documents as an image data by means of the image capture unit; transmitting the image data to an image recognition unit and utilizing the image recognition unit to convert the image data into text data; transmitting the text data to the translation service providers for translation; utilizing the comparing unit to compare translation results and determine one of them as the best translation result according to the occurrence number of the same words in the compared translation results; and displaying the best translation result on a display unit. So the user can review the translation results quickly and easily.

Abstract: A paper size detection device includes a central switch, at least two switches disposed to two opposite sides of the central switch at intervals, and at least a sensor corresponding to the two switches located at the two opposite sides of the central switch. The sensor can be designated as a light sensor. One switch triggers the sensor and the other switch is without triggering the sensor under an original no paper condition. So that a detection method of the paper size detection device that uses N light sensors to judge N*2 papers' size can be realized by virtue of the above-mentioned setting structure, N is a positive integer, such as 2, 3, 4 and so on. Thus, the paper size detection device has a simple structure and a lower manufacture cost, and the detection method of the paper size detection device is simplified, accordingly.

Abstract: A scanning device includes a scanning platform, a feed roller mounted above the scanning platform and rotatable to bring a sheet-like medium across the scanning platform, first and second elastic elements located under two ends of the scanning platform to press the scanning platform against the feed roller. One end of the scanning device near to the first elastic element is defined as a datum end for guiding the mediums to enter the scanning device. The first elastic element acts a greater force on the scanning platform than the second elastic element, or the distance from the first elastic element to the datum end is smaller than that from the second elastic element to the other end of the scanning device and the force from the first elastic element is equal to that from the second elastic element, so as to make the medium levelly transmitted during being scanned.

Abstract: A scanning device includes a scanning platform, a feed roller mounted above the scanning platform and rotatable to bring a sheet-like medium across the scanning platform, first and second elastic elements located under two ends of the scanning platform to press the scanning platform against the feed roller. One end of the scanning device near to the first elastic element is defined as a datum end for guiding the mediums to enter the scanning device. The first elastic element acts a greater force on the scanning platform than the second elastic element, or the distance from the first elastic element to the datum end is smaller than that from the second elastic element to the other end of the scanning device and the force from the first elastic element is equal to that from the second elastic element, so as to make the medium levelly transmitted during being scanned.

Abstract: An image correction method is applied to a scanner device. The scanner device includes a main case, a drive module, an optical module, an analog-to-digital converter, a first-in and first-out data buffer, a data flow control unit, a set unit, a data classification unit and a memory storage unit which are electrically connected and assembled in the main case. The scanner device executes a program statement set by the set unit in the memory storage unit to get values for building an update shading table. The scanner device utilizes the update shading table to compensate pixel values corresponding to red, green and blue light of each scanned line of an image for doing a luminance compensation of image pixels corresponding to the red, green and blue light of each scanned line of the image so as to complete an image correction of each scanned line of the image.

Abstract: A feeding apparatus includes a pickup roller arranged to pick and feed a medium downstream along a conveying path, a separating roller arranged downstream to the pickup roller for advancing the medium downstream, a brake roller arranged opposite to the separating roller, and a pressing structure arranged opposite to the pickup roller and operable to swing toward or away from the pickup roller according to the rotating direction of the brake roller. When the brake roller rotates for feeding mediums downstream, the pressing structure moves toward the pickup roller and applies a normal force required for picking the medium. But when the brake roller stops rotating downstream because multiple mediums are fed between the brake roller and the separating roller, the pressing structure moves away from the pickup roller and stops applying normal force, so as to control the medium-picking process.

Abstract: A portable scanner includes a housing including a hollow upper housing and a hollow lower housing of which two ends are connected together to define a transmitting passage therebetween, a switching device rotatably mounted inside the upper housing, a first scanning device mounted on the switching device, and a document feeder for transmitting the document automatically through the transmitting passage. A first and a second scanning window are opened in and penetrating through two different sides of the upper housing respectively, wherein the second scanning window is communicated with the transmitting passage. The switching device together with the first scanning device are switched between a first scanning state that is the first scanning device faces the first scanning window for scanning the document manually, and a second scanning state that is the first scanning device faces the second scanning window for scanning the document automatically.

Abstract: A method of automatic white balance adjustment for a scanner is described hereinafter. First, a light source provides a white light to make the scanner scan a document and get an initial image of the document. Secondly, red, green and blue chromatic values of a background color are obtained in the initial image. Next, a factor is calculated based on the chromatic values and a calibration value which is stored in a calibration sheet. Lastly, the scanner automatically adjusts a brightness ratio of the red, green and blue lights of the light source according to the factor, and then rescans the document to get a final image which has a processed background color. Therefore, the final image having the background color close to white is in favor of identification. Furthermore, the adjustment is executed in the process of the scanner rescanning the document so that the step of executing adjustment by software can be eliminated.