Abstract: A duplex scanning apparatus capable of switching a scanning background includes a pair of glass plates, a pair of background boards pivoted to the glass plates and a driving mechanism. The glass plates are disposed in a frame and overlapped with each other. The two glass plates define two scanning areas face to face. A portion of the frame adjacent to an outer surface of the glass plate defines a first color area of the scanning background corresponding to the scanning area. One background board is positioned above one glass plate, and the other background board is positioned under the other glass plate and away from the one background board. Each background board defines a second color area of the scanning background corresponding to the scanning area. The driving mechanism mounted in the frame drives the background boards to turn over with respect to the corresponding glass plates.

Abstract: An automatic page-turning scan device for automatically turning and scanning pages of a book includes an automatic page-turning device and a scan module. The automatic page-turning device includes a base, a book support, a page-pressing module, a pick-up and page-turning module, and a system controller connected with the book support, the page-pressing module and the pick-up and page-turning module. The book support slidably mounted to the base includes two supporting panels for supporting the book. The page-pressing module is mounted to the supporting panel includes a driving module, and a pressing plate driven by the driving module. The pick-up and page-turning module mounted to the base includes a pick-up holder, a pick-up arm and a path guiding mechanism. The scan module is mounted to the automatic page-turning device, and the system controller controls the scan module to scan the pages of the book.

Abstract: A paper transmitting mechanism mounted on the transmitting path which includes a driving wheel, a driving system drives the driving wheel, a pressure wheel, a pressure wheel adjusting unit, and a paper sensor settled upstream to the driving wheel and pressure wheel. The pressure wheel adjusting unit includes an elastomeric unit; one end of the elastomeric unit is connected to the axle of the pressure wheel, and the other end is connected to a linear driving device. When the paper sensor detects the paper is going to enter or leave the driving wheel, the paper sensor will send a signal for adjusting the clamping force between the driving wheel and the pressure wheel to make the clamping force and the friction between the driving wheel and the pressure wheel adjustable according to the position of the paper, so as to avoid the paper slipping or vibrating during transmitting.

Abstract: An office machine includes a pedestal having an image-handling unit disposed in a top thereof and a passage guider, and an automatic document feeder capable of rotating between an open position exposing the image-handling unit and a closed position covering the image-handling unit. The automatic document feeder defines a passage for transmitting a document from upstream to downstream therethrough. A substantial middle part of the passage is opened to cooperate with the image-handling unit. A magnetic component is mounted to the automatic document feeder. The passage guider is pivoted to the top of the pedestal and near to a downstream side of the image-handling unit. The passage guider will rotate upward by the magnetic component to make a free end thereof for guiding the document when the cover is at the closed position.

Abstract: A sheet separation mechanism adapted for being used in an automatic sheet feeding device includes a bearing supporter for positioning papers thereon, a sheet separation spring and a sheet separation holder. The bearing supporter defines a receiving groove. The sheet separation spring shows a rough outer periphery surface. The sheet separation spring is disposed in the receiving groove with an axis thereof being parallel to a bottom wall of the receiving groove. The sheet separation holder mounted to the bearing supporter defines an opening corresponding to the receiving groove. The sheet separation spring is restricted in the receiving groove by the sheet separation holder with a top of the rough outer periphery surface thereof being exposed through the opening beyond a top face of the sheet separation holder so as to separate the papers whereby and further ensure the automatic sheet feeding device transports the papers piece by piece.

Abstract: A pickup mechanism includes a main frame, a supporting element mounted to the main frame, and a pickup module positioned in the main frame and including a pickup arm, a transmitting element, a separation element, a pickup element and a barrel element. The separation element includes a separation shaft and a separation roller. The pickup element includes a pickup shaft and a pickup roller. The separation roller and the pickup roller are restricted in the pickup arm. The transmitting element links the separation shaft and the pickup shaft. The pickup arm is pivoted at the separation shaft. The barrel element has a base portion pivotally mounted around the pickup shaft, and a stopping block. When the pickup module swings upward or downward, the barrel element is driven to rotate along with the pickup shaft to make the stopping block against the supporting element or apart from the supporting element.

Abstract: A paper feeding mechanism includes a frame, a pickup assembly, at least one stopper element and one resisting element. The pickup assembly mounted in the frame includes a pickup bracket, a separation element and a pickup element. The stopper element is pivotably mounted between the pickup element and the separation element, and includes a blocking portion and a stopper portion. The resisting element is pivotably mounted between the stopper element and the separation element, and includes a resisting portion and a raising portion. The pickup element wiggles upward or downward under a drive of a gear to make the resisting element wiggle upward or downward with the resisting portion resisting against the stopper portion or being away from the stopper portion to make the blocking portion block papers entering the paper feeding mechanism, or loose the blocking portion freely to let the papers enter the paper feeding mechanism.

Abstract: A pickup mechanism includes a main frame, a supporting element mounted to the main frame, and a pickup module positioned in the main frame and including a pickup arm, a transmitting element, a separation element, a pickup element and a barrel element. The separation element includes a separation shaft and a separation roller. The pickup element includes a pickup shaft and a pickup roller. The separation roller and the pickup roller are restricted in the pickup arm. The transmitting element links the separation shaft and the pickup shaft. The pickup arm is pivoted at the separation shaft. The barrel element has a base portion pivotally mounted around the pickup shaft, and a stopping block. When the pickup module swings upward or downward, the barrel element is driven to rotate along with the pickup shaft to make the stopping block against the supporting element or apart from the supporting element.

Abstract: A calibration mechanism is positioned in a scanning device having a scanning module for scanning a document. The scanning module defines a scanning line perpendicular to a scanned area of the document. The calibration mechanism includes a calibration unit, a supporting unit supporting the calibration unit, and a driving unit. The calibration unit is positioned to face the scanning module and aligned with the scanning line. The driving unit drives the calibration unit to move close to the scanning module and away from the scanning module along the scanning line. The scanning module obtains great brightness value by scanning the calibration unit, if the calibration unit is close to the scanning module. The scanning module obtains small brightness value by scanning the calibration unit, if the calibration unit is far from the scanning module.

Abstract: A sheet processing apparatus includes a sheet-table unit, a sheet-separating unit, a convey unit, a discharge unit, a sheet processing unit, and a sensor arranged at an upstream end of the convey unit and spaced from the discharge unit with a predetermined distance. The convey unit has at least one convey roller, at least one convey pulley, and an elastic device connected with the convey pulley. The elastic device has a stepping motor, a transmission system, a shaft and at least one torsional spring mounted on the shaft. Two ends of the torsional spring is connected with the convey pulley. When the signal resulted from a rear end of the sheet apart from the sensor is sent to the system controller, the stepping motor is commanded by the system controller to rotate the shaft. The torsional spring is twisted to make the convey pulley move away from but still contact with the convey roller.

Abstract: A document guiding mechanism includes a document supporting tray, a gearwheel coupled to the document supporting tray, a right guiding unit, a left guiding unit and a single-way latch means. The right guiding unit includes a right guiding wall positioned on the document supporting tray and a right linear gear extended from the right guiding wall and engaged with the gearwheel. The left guiding unit includes a left guiding wall positioned on the document supporting tray and opposite to and parallel to the right guiding wall, and a left linear gear extended from the left guiding wall and engaged with the gearwheel. The single-way latch means interconnects the document supporting tray and at least one of the right guiding unit and the left guiding unit. The right guiding wall and the left guiding wall can be kept at a suitable position by the single-way latch means.

Abstract: A scanning device includes a hollow housing, a holding plate mounted to an upper portion of the housing, a guiding rod mounted in the housing and spaced from the holding plate with a predetermined distance, a reading unit slidably mounted to the guiding rod, and a flexible cable received in the housing. The flexible cable has a restrictive plate and a conducting cable attached to a top of the restrictive plate. The restrictive plate has at least one long side raised upwardly. The flexible cable is received in the housing in a folding manner, with a lower end thereof where the raised side faces upwards connected to the system controller, and an upper end thereof where the raised side faces downwards connected to the reading unit, forming an inverted-U folding portion. The raised side at the folding portion is unfolded for keeping the folding portion in shape, in scanning process.

Abstract: A paper feeding mechanism mounted to a shell includes a pickup mechanism, a transporting mechanism, a separation mechanism and a one-way clutch mechanism. The pickup mechanism includes a pickup motor having a rotating roller, a pickup roller and a pickup wheel. The transporting mechanism includes a transporting motor, a transporting roller, a transporting wheel and a transporting gear. The separation mechanism includes a separation roller, a separation gear and a separation wheel. The one-way clutch mechanism includes a one-way axle, a wiggling arm, a restoration elastic element fastened between the wiggling arm and the shell, and a releasing gear. The one-way axle passes through one end of the wiggling arm. The rotating roller of the pickup motor passes through the one-way axle. The releasing gear mounted to the other end of the wiggling arm is engaged with the transporting gear and the separation gear.

Abstract: A paper feeding mechanism includes a mechanical frame, a drive system mounted to the mechanical frame, an input tray pivoted to the mechanical frame, a controlling assembly, a pickup assembly and an elevating assembly. The pickup assembly includes a pickup roller and a pickup wheel pivoted to the pickup roller. The elevating assembly mounted to the mechanical frame is pivoted to the input tray. The controlling assembly includes a controlling system, a paper sensor, a floating sensor, and a pickup sensor detecting a position of the pickup assembly to get a total thickness of papers on the input tray. The controlling system controls the drive system to drive the elevating assembly to wiggle upward and downward to drive the input tray to rise and descend according to the total thickness of the papers on the input tray so as to make the pickup wheel pick up the papers steadily.

Abstract: A method of conveying documents for an ADF includes steps of beginning a first conveying procedure of a next document after a preceding document passes through a scanning section during a first conveying procedure of the preceding document, performing a first inverting procedure and then beginning a second conveying procedure of the preceding document during the first conveying procedure of the next document, performing a first inverting procedure and then beginning a second conveying procedure of the next document during the second conveying procedure of the preceding document, performing a second inverting procedure and then beginning a third conveying procedure of the preceding document during the second conveying procedure of the next document, and performing a second inverting procedure and then beginning a third conveying procedure of the next document during the third conveying procedure of the preceding document.

Abstract: A paper feeding mechanism mounted to a shell includes a pickup mechanism, a transporting mechanism, a separation mechanism and a one-way clutch mechanism. The pickup mechanism includes a pickup motor having a rotating roller, a pickup roller and a pickup wheel. The transporting mechanism includes a transporting motor, a transporting roller, a transporting wheel and a transporting gear. The separation mechanism includes a separation roller, a separation gear and a separation wheel. The one-way clutch mechanism includes a one-way axle, a wiggling arm, a restoration elastic element fastened between the wiggling arm and the shell, and a releasing gear. The one-way axle passes through one end of the wiggling arm. The rotating roller of the pickup motor passes through the one-way axle. The releasing gear mounted to the other end of the wiggling arm is engaged with the transporting gear and the separation gear.

Abstract: A scanning apparatus capable of switching a scanning background includes a pair of glass plates, a pair of background boards pivoted to the glass plates and a driving mechanism. The glass plates are disposed in a frame and overlapped with each other. The two glass plates define two scanning areas face to face. A portion of the frame adjacent to an outer surface of the glass plate defines a first color area of the scanning background corresponding to the scanning area. One background board is positioned above one glass plate, and the other background board is positioned under the other glass plate and away from the one background board. Each background board defines a second color area of the scanning background corresponding to the scanning area. The driving mechanism mounted in the frame drives the background boards to turn over with respect to the corresponding glass plates.

Abstract: A document feeding mechanism includes a frame, a document picking means positioned in the frame for picking up and conveying a document, a stopper means positioned in the frame for blocking the conveyance of the document, a supporting portion cooperating with the stopper means for supporting the document picking up means while the document picking up means is raised at a predetermined level, and a blocking portion restricting a rotatable angle of the stopper means for blocking the conveyance of the document while the document picking up means is raised at the predetermined level. The document feeding means is kept at the predetermined level via the cooperation of the supporting portion and the stopper means for supporting the document feeding means. Since, the document feeding mechanism has high reliability to resist shake and crash for preventing the document picking up means from being drooped.

Abstract: A document feeding mechanism includes a driving shaft, a document blocking unit, a tray, an elastic unit and an actuating unit. The tray is pushed up to connect the document blocking unit by the elastic unit. The actuating unit is coupled to the driving shaft and abutted against the tray for pushing down the tray to separate from the document blocking unit. The actuating unit will be driven to allow the tray to be pushed to swing up by the elastic unit for blocking documents. The actuating unit will be driven to abut against the tray for pushing the tray to swing down for separating the tray from the document blocking unit for conveying the documents. Therefore, the document feeding mechanism has high reliability for blocking the documents.

Abstract: A sheet guiding apparatus assembled on a shelf includes two guiding members, two adjusting plates, a first spring, two push bars, a second spring and two rotating members. The guiding member has a base board. A front of the base board defines a guiding portion defining a horizontal recess. Each adjusting plate is pivoted to an outside edge of the base board. The push bars are movably received in the horizontal recesses and capable of sliding in the horizontal recesses to drive the corresponding adjusting plates to rotate upward or free the corresponding adjusting plates therefrom. Each rotating member is pivoted to a front of the guiding portion. When the rotating member is turned down, the rotating member touches the push bar and pushes the push bar to move rearward so that further drives the adjusting plate to rotate upward till being perpendicular to the base board.