Abstract: A magazine type screwing device and a screw supplementary device are provided. The screwing device includes a screwdriver bit with a protrusion part, a storing portion, and a screw stopping portion. The storing portion includes a tubular structure and a slide rail, which are connected with each other. The screwdriver bit is installed in the tubular structure. The screws are disposed within the slide rail. After the screwdriver bit is moved within the tubular structure in a first direction and then the screwdriver bit is moved within the tubular structure in a second direction, one of the screws is detached from the screw stopping portion and introduced into the tubular structure. The screw supplementary device includes a screw transferring portion and a screw feeding portion. The screw transferring portion includes a first conveying track, a sensing element over the first conveying track, a gear, and a first motor.

Abstract: A magazine type screwing device and a screw supplementary device are provided. The screwing device includes a screwdriver bit with a protrusion part, a storing portion, and a screw stopping portion. The storing portion includes a tubular structure and a slide rail, which are connected with each other. The screwdriver bit is installed in the tubular structure. The screws are disposed within the slide rail. After the screwdriver bit is moved within the tubular structure in a first direction and then the screwdriver bit is moved within the tubular structure in a second direction, one of the screws is detached from the screw stopping portion and introduced into the tubular structure. The screw supplementary device includes a screw transferring portion and a screw feeding portion. The screw transferring portion includes a first conveying track, a sensing element over the first conveying track, a gear, and a first motor.

Abstract: An inverting roller device is used for changing a conveying path of a paper. The inverting roller device includes a first rotating shaft, a first roller, a second rotating shaft, a second roller, and a first swinging arm. The first roller and the second roller are disposed on the first rotating shaft and the second rotating shaft, respectively. The first swinging arm is pivotally disposed on the first rotating shaft and connected with the second rotating shaft. First, the first roller and the second roller are rotated to allow the paper to be moved in a first traveling direction. Then, the rotation of the first roller is temporarily stopped, and the second rotating shaft and the second roller are driven by the first swinging arm to be moved relative to a surface of the first roller. Consequently, the conveying path of the paper is changed.

Abstract: An inverting roller device is used for changing a conveying path of a paper. The inverting roller device includes a first rotating shaft, a first roller, a second rotating shaft, a second roller, and a first swinging arm. The first roller and the second roller are disposed on the first rotating shaft and the second rotating shaft, respectively. The first swinging arm is pivotally disposed on the first rotating shaft and connected with the second rotating shaft. First, the first roller and the second roller are rotated to allow the paper to be moved in a first traveling direction. Then, the rotation of the first roller is temporarily stopped, and the second rotating shaft and the second roller are driven by the first swinging arm to be moved relative to a surface of the first roller. Consequently, the conveying path of the paper is changed.

Abstract: A paper roll fixing device of a printer includes a first supporting base, a second supporting base, a first fixing member and a second fixing member. The first fixing member comprises a rotatable first fixing slab. The second fixing member comprises a rotatable second fixing slab. When the first fixing slab and the first fixing slab are pushed by a paper roll, the first fixing slab and the first fixing slab are rotated to the position without stopping the paper roll from entering or leaving the space between the first supporting base and the second supporting base. As a consequently, the paper roll can be smoothly introduced into or removed from the paper roll fixing device. By the paper roll fixing device, the paper roll can be introduced into or removed from the paper roll fixing device with a single hand or in a single step.

Abstract: A retard roller and a retard roller module are provided. The retard roller is used in an automatic document feeder for providing a frictional force to separate plural documents from each other. Unidirectional rotation of the retard roller is permitted. Due to the unidirectional rotation, the contact surface of the retard roller can be switched. During the sheet-feeding process, the document is contacted with a specified contact surface. By rotating the retard roller, the document is contacted with another contact surface.

Abstract: A retard roller and a retard roller module are provided. The retard roller is used in an automatic document feeder for providing a frictional force to separate plural documents from each other. Unidirectional rotation of the retard roller is permitted. Due to the unidirectional rotation, the contact surface of the retard roller can be switched. During the sheet-feeding process, the document is contacted with a specified contact surface. By rotating the retard roller, the document is contacted with another contact surface.

Abstract: A paper roll fixing device of a printer includes a first supporting base, a second supporting base, a first fixing member and a second fixing member. The first fixing member comprises a rotatable first fixing slab. The second fixing member comprises a rotatable second fixing slab. When the first fixing slab and the first fixing slab are pushed by a paper roll, the first fixing slab and the first fixing slab are rotated to the position without stopping the paper roll from entering or leaving the space between the first supporting base and the second supporting base. As a consequently, the paper roll can be smoothly introduced into or removed from the paper roll fixing device. By the paper roll fixing device, the paper roll can be introduced into or removed from the paper roll fixing device with a single hand or in a single step.

Abstract: A retard roller and a retard roller module are provided. The retard roller is used in an automatic document feeder for providing a frictional force to separate plural documents from each other. Unidirectional rotation of the retard roller is permitted. Due to the unidirectional rotation, the contact surface of the retard roller can be switched. During the sheet-feeding process, the document is contacted with a specified contact surface. By rotating the retard roller, the document is contacted with another contact surface.

Abstract: The present invention provides an automatic document feeder comprising a pick up roller module, a drive roller module, an ejecting idle roller module and a main belt. A main driving roller of the driving roller module drives the main belt to transport the document, and the main belt encircles the main driving roller and a first ejecting idle roller of the ejecting idle roller module.

Abstract: A paper-pickup clutch of an automatic paper-feeding device includes a clamping member and a clamping-force adjusting member and can be applied to image processors such as printers, copiers or scanners. The automatic paper-feeding device includes a shaft and a paper-pickup mechanism transmitted to picking up paper by the shaft. The paper-pickup clutch provides a bi-directional clutch function by moving the clamping member toward or away from the paper-pickup mechanism with the clamping-force adjusting member in order to adjust the clamping force of the clamping member working on the paper-pickup mechanism to a certain level. With the certain level of clamping force, the paper-pickup mechanism sustains against paper to be fed and self-rotates with the rotation of the shaft in a first direction for feeding paper and rotates with the shaft in a second direction for releasing paper without further changing the state of the paper-pickup clutch.

Abstract: The present invention provides an automatic document feeder comprising a pick up roller module, a drive roller module, an ejecting idle roller module and a main belt. A main driving roller of the driving roller module drives the main belt to transport the document, and the main belt encircles the main driving roller and a first ejecting idle roller of the ejecting idle roller module.

Abstract: A paper-pickup clutch of an automatic paper-feeding device includes a clamping member and a clamping-force adjusting member and can be applied to image processors such as printers, copiers or scanners. The automatic paper-feeding device includes a shaft and a paper-pickup mechanism transmitted to picking up paper by the shaft. The paper-pickup clutch provides a bi-directional clutch function by moving the clamping member toward or away from the paper-pickup mechanism with the clamping-force adjusting member in order to adjust the clamping force of the clamping member working on the paper-pickup mechanism to a certain level. With the certain level of clamping force, the paper-pickup mechanism sustains against paper to be fed and self-rotates with the rotation of the shaft in a first direction for feeding paper and rotates with the shaft in a second direction for releasing paper without further changing the state of the paper-pickup clutch.

Abstract: A paper-pickup clutch of an automatic paper-feeding device includes a clamping member and a clamping-force adjusting member and can be applied to image processors such as printers, copiers or scanners. The automatic paper-feeding device includes a shaft and a paper-pickup mechanism transmitted to picking up paper by the shaft. The paper-pickup clutch provides a bi-directional clutch function by moving the clamping member toward or away from the paper-pickup mechanism with the clamping-force adjusting member in order to adjust the clamping force of the clamping member working on the paper-pickup mechanism to a certain level. With the certain level of clamping force, the paper-pickup mechanism sustains against paper to be fed and self-rotates with the rotation of the shaft in a first direction for feeding paper and rotates with the shaft in a second direction for releasing paper without further changing the state of the paper-pickup clutch.

Abstract: A scanning apparatus includes: a toothed belt; a driving member; a first gear set including a first gear trained by the toothed belt; a second gear set spaced apart from the first gear set, and including a second gear trained by the toothed belt; and a switch gear unit including a movable transmission gear driven by the driving member upon actuation thereof, and disposed between the first and second gears. The transmission gear is movable between a first position, in which the transmission gear meshes with the first gear to provide a first rotation speed of the toothed belt, and a second position, in which the transmission gear meshes with the second gear to provide a second rotation speed of the toothed belt different from the first rotation speed.

Abstract: A machine body includes a housing, an upper body capable of being statically positioned at a range of angles relative to the housing, and a hinge. The hinge includes a support shaft connected to the upper body, and a support block connected to the housing, the support block having a hole, and the support shaft passing through the hole and capable of moving up and down along the hole.

Abstract: A paper-pickup clutch of an automatic paper-feeding device includes a clamping member and a clamping-force adjusting member and can be applied to image processors such as printers, copiers or scanners. The automatic paper-feeding device includes a shaft and a paper-pickup mechanism transmitted to picking up paper by the shaft. The paper-pickup clutch provides a bi-directional clutch function by moving the clamping member toward or away from the paper-pickup mechanism with the clamping-force adjusting member in order to adjust the clamping force of the clamping member working on the paper-pickup mechanism to a certain level. With the certain level of clamping force, the paper-pickup mechanism sustains against paper to be fed and self-rotates with the rotation of the shaft in a first direction for feeding paper and rotates with the shaft in a second direction for releasing paper without further changing the state of the paper-pickup clutch.

Abstract: A scanner with a movable mirror set in the scanning module for increasing the resolution of scanned images. The scanner includes a housing that makes use of a set of movable mirrors. When the mirrors move, the distance traveled by the light from the document to the CCD changes, resulting in a different optical resolution. The lens moves in order to maintain the proper focal distance between the document and the CCD. A driving device coordinates the movement of the lens and the moveable mirrors.

Abstract: A scanning device includes a guide screw rod with a motor and a gear device as parts of the scanning module. The guide screw rod is fixed in the scanner along a front-to-back direction. The motor drives the gear device, which engages with the guide screw rod, causing the scanning module to move back and forth to scan a document.

Abstract: A scanner with a movable mirror set in the scanning module for increasing the resolution of scanned images. The scanner includes a housing that makes use of a set of movable mirrors. When the mirrors move, the distance traveled by the light from the document to the CCD changes, resulting in a different optical resolution. The lens moves in order to maintain the proper focal distance between the document and the CCD. A driving device coordinates the movement of the lens and the moveable mirrors.