摘要:
A paper pick-up mechanism for a feeder includes a pick-up roller, a pick-up roller shaft, a separation roller, a transmission shaft, a gear set and a transmission gear shaft. Two one-way clutches are respectively coupled to the transmission shaft and the transmission gear shaft in parallel. When the transmission shaft is rotated in a direction opposite to a sheet-feeding direction, the gear set, through the cooperation of the two one-way clutches are used as a planetary gear set to lift up the pick-up roller.
摘要:
A paper pick-up mechanism for a feeder includes a pick-up roller, a pick-up roller shaft, a separation roller, a transmission shaft, a gear set and a transmission gear shaft. Two one-way clutches are respectively coupled to the transmission shaft and the transmission gear shaft in parallel. When the transmission shaft is rotated in a direction opposite to a sheet-feeding direction, the gear set, through the cooperation of the two one-way clutches are used as a planetary gear set to lift up the pick-up roller.
摘要:
A sheet feeder has a transmission mechanism which includes an output gear mesh with a transmission gear train, and a switch element, disposed between the transmission gear train and the output gear, for switching a rotational direction of the output gear. The switch element includes a movable arm, a driving gear driven by the transmission gear train, a switching gear set attached to the arm and meshing with the driving gear, and a clutch device for restricting movement of the arm to enable the switching gear set to be disengaged from the output gear. When the output gear meshes with the switching gear set, the output gear and a transmission shaft of the sheet feeding mechanism may change the direction of their rotation. When the output gear is disengaged from the switching gear set, the output gear and the transmission shaft of the sheet feeding mechanism are not driven by a power source.
摘要:
A sheet feeder has a transmission mechanism which includes an output gear mesh with a transmission gear train, and a switch element, disposed between the transmission gear train and the output gear, for switching a rotational direction of the output gear. The switch element includes a movable arm, a driving gear driven by the transmission gear train, a switching gear set attached to the arm and meshing with the driving gear, and a clutch device for restricting movement of the arm to enable the switching gear set to be disengaged from the output gear. When the output gear meshes with the switching gear set, the output gear and a transmission shaft of the sheet feeding mechanism may change the direction of their rotation. When the output gear is disengaged from the switching gear set, the output gear and the transmission shaft of the sheet feeding mechanism are not driven by a power source.
摘要:
A sheet transporting apparatus includes a housing, a rotating shaft, a roller and a gear assembly. The housing includes a first supporting member and a second supporting member. The rotating shaft is rotatably mounted in the housing. The rotating shaft has a first end portion mounted in the first supporting member, and a second end portion mounted in the second supporting member. The roller is attached to the rotating shaft and rotated by the roller to transport a document sheet. The gear assembly, coupled to the second end portion, transmits power to the rotating shaft. The gear assembly includes a gear member and a coupling member, rotatable with the gear member, for securing the second end portion to the second supporting member.
摘要:
A calibration mechanism of a scanning device including an assembly of a flexible member and a calibration strip and a limiting member is disclosed. The assembly of the flexible member and the calibration strip can travel in reciprocating motion, and the limiting member limits the distance of the vertical drift of the calibration strip. Thus, the calibration strip is confined within an anticipated position, and the accuracy and the consistency of the calibration results for an optical module of the scanner, which acquires image data of a plurality of the-scanning lines of the calibration strip, are greatly improved.
摘要:
A safety structure for a cover device includes a base assembly and a cover assembly. The base assembly has a concave portion. The cover assembly is hinged to the base assembly and may cover the base assembly. The cover assembly has a cover body and a projection, which may elastically protrude out of and retract into the cover body, and may be fit into the concave portion for positioning. The projection is configured such that it may retract into the cover body to prevent an object from being hurt when the cover assembly is placed down and touches the object.
摘要:
The invention provides an automatic document feeder for a scanning apparatus. The automatic document feeder includes a feeding passage, a feeding mechanism, a shaft, an idle roller, and a detecting device. The feeding mechanism is used for transporting a document along the feeding passage. The shaft is disposed at the feeding passage, and the idle roller is sleeved on the shaft. When the document is transported through the feeding passage, the idle roller is driven to rotate by the document. The detecting device detects a rotational speed of the idle roller and outputs a detection signal according to the rotational speed of the idle roller.
摘要:
A scanner with a controller for controlling movement of a scanning module during scanner maintenance is provided. The scanner includes a housing, a transparent platform, and a scanning module installed inside the housing for scanning a document. The scanning module can move from a home position to a position corresponding to the document. The scanner also includes a driving device for driving the scanning module and for driving the scanning module back to the home position after the scanning module has scanned the document, and a controller for controlling the driving device. When the scanning module is at the home position, the controller can cause the driving device to drive the scanning module to a maintenance position and stop the scanning module at the maintenance position.