Abstract: A scanner includes an image scanning mechanism, a foreign object location detector, a foreign object location storage, a correction processor, and a shading correction processor. The foreign object location detector detects a pixel at a location of a foreign object adhered to an optical mirror of the image scanning mechanism by use of a first reference image data obtained by scanning a white reference plate by the image scanning mechanism at an initial operation after power-on of the scanner. The foreign object location storage stores a location of the pixel at the foreign object location in the main scanning direction detected by the foreign object location detector.

Abstract: A scanner includes an image scanning mechanism, a foreign object location detector, a foreign object location storage, a correction processor, and a shading correction processor. The foreign object location detector detects a pixel at a location of a foreign object adhered to an optical mirror of the image scanning mechanism by use of a first reference image data obtained by scanning a white reference plate by the image scanning mechanism at an initial operation after power-on of the scanner. The foreign object location storage stores a location of the pixel at the foreign object location in the main scanning direction detected by the foreign object location detector.

Abstract: An autotensioner for use in applying a tension to a moving belt, includes a bracket secured to an engine body and having a projection, a rocking member rockingly mounted to the bracket through a first axle and having an arm, a pulley rotatably mounted to the rocking member through a second axle for applying the tension to the moving belt, and a damper device provided between the projection of the bracket and the arm of the rocking member.

Abstract: A speed sensing rolling bearing unit having a hub rotating together with a vehicle wheel, a tone wheel fixed to the hub and made from a light-shielding material circumferentially provided with a number of light transmitting portion or a non-reflecting material circumferentially provided with a number of light-reflecting portions, a dover having a synthetic resin block in it, and a sensor embedded in the synthetic resin block and comprising a light-emitting element and a light-receiving element which receives the light from the light-emitting element intermittently as the hub rotates.

Abstract: The rolling-bearing unit with reduction gear of this invention includes, an outer ring or race having outer ring raceways formed on its inside circumferential surface, an inner ring or race having inner ring raceways formed on its outside circumferential surface and which face the outer ring raceways, several rolling bodies located between the outer ring raceways and inner ring raceways, a ring gear formed on the inside circumferential surface of a member which is affixed with respect to the outer ring or race and which is located away from the outer ring raceway in the axial direction, several support shafts which are connected respectively at their base portion at circumferential locations on the end face of the inner ring or race and arranged so that they are parallel to the outer and inner rings or races, and planetary gears which are rotatably supported around the support shafts and which mesh with the ring gear.

Abstract: An autotensioner for use in applying a tension to a moving belt, having a damper apparatus which can follow a sudden change in tension of the belt by improving the piston and plunger structure of the damper apparatus so that the viscous fluid has a liquid surface kept high even when the plunger rises its uppermost position to prevent air from entering underneath the piston.

Abstract: An autotensioner for use in applying a tension to a moving belt, comprises a bracket secured to an engine body and having a projection, a rocking member rockingly mounted to the bracket through a first axle and having an arm, a pulley rotatably mounted to the rocking member through a second axle for applying the tension to the moving belt, and a damper device provided between the projection of the bracket and the arm of the rocking member.

Abstract: An auto tensioner comprises a rocking member the base end portion of which is supported by a fixed shaft so that it can rock freely, and on the tip end portion of which there is a pulley that is freely rotatably supported, a torsional coil spring for applying a resilient force in the rotational direction to the rocking member so that it pushes the pulley onto the belt, a damper device located between the rocking member and a fixed projection located in a base member wherein when the rocking member is turned by the resilient force of the torsion coil spring, the bottom of the damper device and the projection supported by the base member are separated so as to move the pulley quickly, and when the rocking member is turned in the opposite direction, the rocking arm pushes the top end of the damper device, so that the pulley is displaced slowly by the movement of the damper device whereby it does not require much space, and so that it can effectively do away with slack in the belt.

Abstract: An auto tensioner comprises a rocking member the base end portion of which is supported by a fixed shaft so that it can rock freely, and on the tip end portion of which there is a pulley that is freely rotatably supported, a torsional coil spring for applying a resilient force in the rotational direction to the rocking member so that it pushes the pulley onto the belt, a damper device located between the rocking member and a fixed projection located in a base member wherein when the rocking member is turned by the resilient force of the torsion coil spring, the bottom of the damper device and the projection supported by the base member are separated so as to move the pulley quickly, and when the rocking member is turned in the opposite direction, the rocking arm pushes the top end of the damper device, so that the pulley is displaced slowly by the movement of the damper device whereby it does not require much space, and so that it can effectively do away with slack in the belt.

Abstract: An auto tensioner comprises a rocking member the base end portion of which is supported by a fixed shaft so that it can rock freely, and on the tip end portion of which there is a pulley that is freely rotatably supported, a torsional coil spring for applying a resilient force in the rotational direction to the rocking member so that it pushes the pulley onto the belt, a damper device located between the rocking member and a fixed projection located in a base member wherein when the rocking member is turned by the resilient force of the torsion coil spring, the bottom of the damper device and the projection supported by the base member are separated so as to move the pulley quickly, and when the rocking member is turned in the opposite direction, the rocking arm pushes the top end of the damper device, so that the pulley is displaced slowly by the movement of the damper device whereby it does not require much space, and so that it can effectively do away with slack in the belt.