Abstract: A loop heat transfer device has therein an enclosed space being vacuum and filled with a working fluid. The loop heat transfer device includes a base, a partition wall, an upper lid, and a capillarity structure. The base includes a first chamber, a second chamber and an extension groove. The extension groove extends from the first chamber to the second chamber. The partition wall connects to the base and partitions the extension groove into a capillarity channel and an airstream channel. The upper lid connects to the base and the partition wall. The enclosed space includes the first chamber, the second chamber and the extension groove. The capillarity structure is disposed in the first chamber, the second chamber and the capillarity channel.

Abstract: A transmission device includes a driving motor, a separation roller module, a correction roller module, a discharging roller module, a first clutch, a second clutch, a third clutch and a plurality of sensors which are mounted to an automatic sheet feeder. The first clutch is disposed between the driving motor and the separation roller module. The second clutch is disposed between the driving motor and the correction roller module. The third clutch is disposed between the driving motor and the discharging roller module. The plurality of the sensors sense signal variations at the time of a leading end or a tail end of each of the documents passing through the plurality of the sensors, and the plurality of the sensors transmit the signal variations to the first clutch, the second clutch and the third clutch.

Abstract: The present invention is related to a scanning device for scanning documents, comprises a flat-bed scanning glass; a contact image sensor arranged above the flat-bed scanning glass separately to form a scanning path therebetween, a bottom surface of the contact image sensor being arranged with a protecting glass, a middle area of the protecting glass being configured as a scanning area, and a chamfer being arranged at the bottom surface of the protecting glass at a downstream position relative to the scanning area. Hence the dust of documents in this invention would be stacked in the chamfer during the scanning process temporarily and then be wiped away by the document itself, so as to assure the dust would not be stacked in the scanning area. The scanning device in this invention is capable to maintain the scanning quality without clearing the dust even after scanned a massive quantity of documents.

Abstract: A scanning device includes at least one motor, an input tray, a pickup roller, a separation roller module, an ultrasonic sensor, a scanning module, a path switcher and a controller. The pickup roller is connected with the at least one motor. The separation roller module is connected with the at least one motor. The ultrasonic sensor includes an ultrasonic emitter and an ultrasonic receiver. The ultrasonic sensor is used for sensing that a single paper or multiple papers are fed in. The scanning module is used for scanning a plurality of papers. The path switcher is connected with the at least one motor. The at least one motor is capable of driving the path switcher to be switched to a first position and a second position. The controller is connected with the at least one motor and the ultrasonic sensor.

Abstract: A transmission device includes a driving motor, a separation roller module, a correction roller module, a discharging roller module, a first clutch, a second clutch, a third clutch and a plurality of sensors which are mounted to an automatic sheet feeder. The first clutch is disposed between the driving motor and the separation roller module. The second clutch is disposed between the driving motor and the correction roller module. The third clutch is disposed between the driving motor and the discharging roller module. The plurality of the sensors sense signal variations at the time of a leading end or a tail end of each of the documents passing through the plurality of the sensors, and the plurality of the sensors transmit the signal variations to the first clutch, the second clutch and the third clutch.

Abstract: A method of manufacturing an exhaust-pipe-free vapor chamber includes the steps of: preparing: placing two boards one above the other to form therebetween a receiving space, placing a wick in the receiving space, and sintering the wick to at least one of the boards, wherein the boards each have an extension plate extending outward from an end of the board, allowing the boards and extension plates to form a tunnel which an exhaust pipe is inserted into; water feeding and gas removing; sealing: clamping portions of the boards and extension plates by a sealing clamp, but not clamping the exhaust pipe, wherein the clamped portions correspond in position to the tunnel and are compressed such that a portion of the tunnel is compressed and sealed; cutting: cutting off an external, remaining portion not clamped by the sealing clamp; and welding: welding and sealing a gap not yet been brazed.

Abstract: A vapor chamber with an inner ridge forming passages, including: a first board having, defined thereon, a heating region, a thermally-insulating region and a condensing region; a second board coupled to the first board; a first wick disposed at the second board or the first board and extending from the heating region to the thermally-insulating region at the very least; and a working fluid. An inner ridge protrudes from the first board toward the second board and has bumps spaced apart by a predetermined distance. Some of the bumps are slender, flank predetermined routes, and are spaced apart to form passages, with the passages extending from the heating region to the condensing region via the thermally-insulating region. Ends of the bumps press against the first wick or the second board.

Abstract: A joint assembly of vapor chambers connects the vapor chambers to effectuate joint operation thereof. For example, two paired vapor chambers are connected therebetween by a capillary pipe and a gas pipe. The capillary pipe is filled with a third wick which connects with a first wick and a second wick in the two vapor chambers. The two vapor chambers are in spatial communication with each other because of the gas pipe. A working fluid in the two vapor chambers is transferred between the first, second and third wicks by capillarity. The gas-phase working fluid moves between the two vapor chambers via the gas pipe, thereby allowing the two vapor chambers to operate jointly.

Abstract: A joint assembly of vapor chambers connects the vapor chambers to effectuate joint operation thereof. For example, two paired vapor chambers are connected therebetween by a capillary pipe and a gas pipe. The capillary pipe is filled with a third wick which connects with a first wick and a second wick in the two vapor chambers. The two vapor chambers are in spatial communication with each other because of the gas pipe. A working fluid in the two vapor chambers is transferred between the first, second and third wicks by capillarity. The gas-phase working fluid moves between the two vapor chambers via the gas pipe, thereby allowing the two vapor chambers to operate jointly.

Abstract: A driving device used in a paper separation mechanism includes an internal gear, an external gear sheathed around the internal gear, a shell of which an inner front face protrudes backward to form a hollow cylinder which the internal gear is sheathed around, an elastic element restrained between a front end of the internal gear and the inner front face of the shell, and a driving member rotatably on the rear of the shell. The driving device utilizes the cooperation of a guide block of the internal gear and a guide groove of spiral shape of the hollow cylinder, the cooperation of a locking arm of the shell and an outer ratchet of the external gear, the cooperation of a slope of the external gear and pushing blocks of the driving member to make a clockwise rotation angle of the driving member be greater than a counterclockwise rotation angle.

Abstract: A belt transmission mechanism includes a driving pulley, a following pulley mounted on a shaft, a timing belt looping around the driving pulley and the corresponding following pulley, and a belt limiter. When the driving pulley rotates, the timing belt has a tight side and a slack side. The belt limiter has a mounting portion rotatably mounted on the shaft and located behind the following pulley. A portion of an outer periphery of the mounting portion adjacent to the slack side extends outward to form a connecting portion. One end of the connecting portion adjacent to the slack side extends forward to form a limiting board which is attached to an outer surface of the slack side. The limiting board is tangent to and spaced from an outer periphery of the following pulley to make the slack side continuously engaged with the following pulley in a tangential direction.

Abstract: A driving device used in a paper separation mechanism includes an internal gear, an external gear sheathed around the internal gear, a shell of which an inner front face protrudes backward to form a hollow cylinder which the internal gear is sheathed around, an elastic element restrained between a front end of the internal gear and the inner front face of the shell, and a driving member rotatably on the rear of the shell. The driving device utilizes the cooperation of a guide block of the internal gear and a guide groove of spiral shape of the hollow cylinder, the cooperation of a locking arm of the shell and an outer ratchet of the external gear, the cooperation of a slope of the external gear and pushing blocks of the driving member to make a clockwise rotation angle of the driving member be greater than a counterclockwise rotation angle.

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 position, the second arm swings toward the fourth position, and when the first swing arm swings toward the second position, the second swing arm swings to the third position.

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 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: 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 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: 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: 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 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.