Abstract: A feeding apparatus includes a mounting portion that holds a medium; a feeding roller that feeds the medium toward a feeding direction; a stopper configured to prevent the medium from moving toward the feeding direction; a supporting part that swings the feeding roller between: a first position in which the feeding roller feeds the medium while both the feeding roller and the stopper contact the medium, and a second position in which the feeding roller does not contact the medium while the stopper contacts the medium to prevent the medium from moving toward the feeding direction; and a regulating part disposed on a downstream side in feeding direction with respect to a supporting point of the supporting part. The regulating part regulates movement of the stopper by contacting a portion of the stopper that does not contact the medium in the first position.

Abstract: A feeding apparatus includes a mounting portion that holds a medium; a feeding roller that feeds the medium toward a feeding direction; a stopper configured to prevent the medium from moving toward the feeding direction; a supporting part that swings the feeding roller between: a first position in which the feeding roller feeds the medium while both the feeding roller and the stopper contact the medium, and a second position in which the feeding roller does not contact the medium while the stopper contacts the medium to prevent the medium from moving toward the feeding direction; and a regulating part disposed on a downstream side in feeding direction with respect to a supporting point of the supporting part. The regulating part regulates movement of the stopper by contacting a portion of the stopper that does not contact the medium in the first position.

Abstract: An image forming apparatus includes a housing; a mounting portion in the housing configured to hold a recording medium; one or more light receivers in the housing; a light adjuster that adjusts an amount of light incident on the light receivers based on presence or size of the recording medium on the mounting portion; and a controller that determines a size of the recording medium based on the amount of light that has been adjusted by the light adjuster.

Abstract: An image forming apparatus includes a placement portion that include a first surface on which a medium is placed and a protruding portion, a feed roller that opposes the placement portion, a second surface that forms an obtuse angle with the first surface, and a restriction portion disposed downstream of the feed roller in a conveyance direction on the placement portion and that restricts movement of the medium to a predetermined direction. The protruding portion is disposed between the feed roller and the restriction portion.

Abstract: A conveyance roller includes a shaft body including a cylindrical roller base having a center axis coinciding with a rotational axis of the shaft body, and an elastic member that covers the roller base. The roller base includes either a protrusion covered by the elastic member and provided on a lateral surface of the roller base, or a through-hole that penetrates the roller base in a direction parallel to a diameter of the roller base and into which the elastic member is inserted.

Abstract: A transportation device includes a pick-up unit having a first arm, a second arm that is rotatable about a second rotation section with respect to the first arm and is provided with a feeding roller fixed thereon, and a torsion coil spring that acts on the second rotation section so as to bias the feeding roller toward the paper sheets. The first arm has a first fixation section that fixes in place one end of the torsion coil spring, while the second arm has a second fixation section that fixes in place the other end of the torsion coil spring. A plurality of spring latches is disposed on at least one of the first fixation section and second fixation section so as to adjust a spring force of the torsion coil spring.

Abstract: A transporting apparatus which is capable of restraining multi feed of transported media is provided. The transporting apparatus includes a first arm mounted on a supporting shaft so as to be pivotable with respect to the supporting shaft about a first pivotal portion, a second arm fixed with a feed roller and mounted on the first arm so as to be pivotable with respect to the first arm about the second pivotal portion, and a torsion coil spring acting on the second pivotal portion so as to urge the feed roller toward the sheet in a just-before-transport state and a sheet transporting state.

Abstract: A method is provided for manufacturing a sheet-conveying roller, which includes a roller shaft having a pipe-shaped roller body on an outer circumference of which a resin layer is formed, and bearing members made of resin being attached to both end portions of the roller shaft and having press-fitted portion and a bearing portion. The method includes: press-fitting the press-fitted portion into the both end portions of the roller shaft; cutting a portion of the press-fitted portion of the bearing members being press-fitted into the roller shaft, the portion protruding from the roller body; aligning axis of the sheet-conveying roller by cutting an outer circumference of the press-fitted portion press-fitted into the roller shaft; and cutting an end face of the bearing portion.

Abstract: A method is provided for manufacturing a sheet-conveying roller, which includes a roller shaft having a pipe-shaped roller body on an outer circumference of which a resin layer is formed, and bearing members made of resin being attached to both end portions of the roller shaft and having press-fitted portion and a bearing portion. The method includes: press-fitting the press-fitted portion into both end portions of the roller shaft; cutting a portion of the press-fitted portion of the bearing members being press-fitted into the roller shaft, the portion protruding from the roller body; aligning an axis of the sheet-conveying roller by cutting an outer circumference of the press-fitted portion press-fitted into the roller shaft; and cutting an end face of the bearing portion.

Abstract: There is provided a method for manufacturing a sheet-conveying roller including: a roller shaft having a pipe-shaped roller body on an outer circumference of which a resin layer is formed; and bearing members made of resin being attached to both end portions of the roller shaft and having press-fitted portion and a bearing portion. The method includes: press-fitting the press-fitted portion into the both end portions of the roller shaft; cutting a portion of the press-fitted portion of the bearing members being press-fitted into the roller shaft, the portion being protruded from the roller body; aligning axis of the sheet-conveying roller by cutting an outer circumference of the press-fitted portion being press-fitted into the roller shaft; and cutting an end face of the bearing portion.