摘要:
A sheet feeder includes a separation roller having a circumferential surface that contacts a first sheet to be fed first among stacked sheets and picks up the first sheet and one or more second sheets adjacent to the first sheet, a separation arm that is closer to the circumferential surface of the separation roller downstream in a feeding direction and configured to apply higher frictional resistance to the second sheets than the first sheet to feed the first sheet ahead of the second sheets, and a guide member including a guide portion that has a lower-friction surface than the separation arm and extends from the separation arm with a distal end thereof in contact with or close to the circumferential surface of the separation roller. The guide portion guides the first and second sheets along the circumferential surface of the separation roller.
摘要:
A sheet feeder includes a separation roller having a circumferential surface that contacts a first sheet to be fed first among stacked sheets and picks up the first sheet and one or more second sheets adjacent to the first sheet, a separation arm that is closer to the circumferential surface of the separation roller downstream in a feeding direction and configured to apply higher frictional resistance to the second sheets than the first sheet to feed the first sheet ahead of the second sheets, and a guide member including a guide portion that has a lower-friction surface than the separation arm and extends from the separation arm with a distal end thereof in contact with or close to the circumferential surface of the separation roller. The guide portion guides the first and second sheets along the circumferential surface of the separation roller.
摘要:
A covering device which includes a cover member that selectively covers a body, a first hinge mechanism, and a second hinge mechanism. The first hinge mechanism includes a first movable member that is pivotally coupled to the cover member and slidably attached to the body. The first movable member is configured to move relative to the body in a predetermined direction. The first hinge mechanism further includes a brake member which generates a brake force that applies resistance against the first movable member when a force is applied to move the first movable member relative to the body in the predetermined direction. The first hinge mechanism is positioned further from a center of gravity of the cover member than the second hinge mechanism.
摘要:
An image reader is provided, which includes a reference position determining unit configured to, in a state where a bright area and a dark area are formed on a reflection surface when a light projecting unit projects light toward a part of the reflection surface, receive the light reflected from the reflection surface with a light receiving portion of a reading unit while restricting a light emitting portion of the reading unit from emitting light, detect a position of the bright area and a position of the dark area in a main scanning direction, and determine a reference position in the main scanning direction based on the detected positions of the bright area and the dark area.
摘要:
A sheet feeder includes a separation roller having a circumferential surface that contacts a first sheet to be fed first among stacked sheets and picks up the first sheet and one or more second sheets adjacent to the first sheet, a separation arm that is closer to the circumferential surface of the separation roller downstream in a feeding direction and configured to apply higher frictional resistance to the second sheets than the first sheet to feed the first sheet ahead of the second sheets, and a guide member including a guide portion that has a lower-friction surface than the separation arm and extends from the separation arm with a distal end thereof in contact with or close to the circumferential surface of the separation roller. The guide portion guides the first and second sheets along the circumferential surface of the separation roller.
摘要:
A covering device which includes a cover member that selectively covers a body, a first hinge mechanism, and a second hinge mechanism. The first hinge mechanism includes a first movable member that is pivotally coupled to the cover member and slidably attached to the body. The first movable member is configured to move relative to the body in a predetermined direction. The first hinge mechanism further includes a brake member which generates a brake force that applies resistance against the first movable member when a force is applied to move the first movable member relative to the body in the predetermined direction. The first hinge mechanism is positioned further from a center of gravity of the cover member than the second hinge mechanism.
摘要:
A sheet feeder includes a separation roller having a circumferential surface that contacts a first sheet to be fed first among stacked sheets and picks up the first sheet and one or more second sheets adjacent to the first sheet, a separation arm that is closer to the circumferential surface of the separation roller downstream in a feeding direction and configured to apply higher frictional resistance to the second sheets than the first sheet to feed the first sheet ahead of the second sheets, and a guide member including a guide portion that has a lower-friction surface than the separation arm and extends from the separation arm with a distal end thereof in contact with or close to the circumferential surface of the separation roller. The guide portion guides the first and second sheets along the circumferential surface of the separation roller.
摘要:
An image scanning device has a sheet conveying roller conveying a sheet when a conveyed sheet scanning function is activated, a guide member defining a sheet feed path, a first gear transmitting a driving force to the sheet conveying roller, a first supporting shaft extending in a direction parallel with a width direction of the sheet feed path and supporting the first gear, a second gear engaging with the first gear, a second supporting shaft extending in a direction perpendicular to the first supporting shaft and supporting the second gear, a holder unit holding the second supporting shaft, the holder unit arranged at one end of the sheet feed path in the width direction, a reinforce member made of metal and extending in the width direction, first and second fixing units fixing longitudinal ends of the reinforce member to the holder unit and the guide member, respectively.
摘要:
A first rack of a pair of document guides slides in pressing contact against a pinion due to contact with a protrusion. As a result, the first rack is subjected to a larger sliding resistance than when the protrusion is not provided. When one of the document guides is operated, the operating force transmits directly to the first rack. Therefore, if a large force corresponding to the sliding resistance increased by the protrusion is applied, the first rack can be slid. When the other document guide is operated, the operating force transmits to the first rack through the pinion. Therefore, the sliding resistance increased by the protrusion increases due to the gear efficiency of the pinion.
摘要:
A sheet feeding apparatus is provided, including a separation roller configured to apply a feeding force to a sheet, a pad assembly configured to pivot about a pivot axis in a direction close to or away from a supporting unit, and an elastic member configured to press the pad assembly toward the separation roller. The pad assembly includes a separation pad disposed facing the separation roller configured to apply a resistive force to a sheet, a holder holding the separation pad, and a first engaging portion disposed on a side of a distal end. The supporting unit includes a second engaging portion. The first and second engaging portions are configured to engage each other to restrict the pad assembly such that the distal end is not separated from the supporting unit more than a specified distance when the separation roller is separated from the separation pad.