An image reading apparatus, includes: a supply tray; a discharge tray; a conveyance guide; a reading sensor; a discharge unit, which includes a discharge opening to discharge the sheet conveyed by the conveyance guide to the discharge tray and is configured to move from a third position to a fourth as the document supported by the paper feed tray is decreased, the fourth position being higher than the third position; a first drive source, which generates a drive force; a first rotation body, which moves the movable plate by transmitting the drive force from the first drive source to the movable plate; and a second rotation body, which moves the discharge unit by transmitting the drive force from the first drive source to the discharge unit, wherein a diameter of the first rotation body and a diameter of the second rotation body are different from each other.

An image reading apparatus, includes: a supply tray; a discharge tray; a conveyance guide; a reading sensor; a discharge unit, which includes a discharge opening to discharge the sheet conveyed by the conveyance guide to the discharge tray and is configured to move from a third position to a fourth as the document supported by the paper feed tray is decreased, the fourth position being higher than the third position; a first drive source, which generates a drive force; a first rotation body, which moves the movable plate by transmitting the drive force from the first drive source to the movable plate; and a second rotation body, which moves the discharge unit by transmitting the drive force from the first drive source to the discharge unit, wherein a diameter of the first rotation body and a diameter of the second rotation body are different from each other.

An image reading apparatus includes a supply tray which support sheets and includes a movable plate configured to move in correspondence to reduction in a number of the sheets supported on the supply tray, a discharge tray which is located below the supply tray and supports discharged sheets, a conveyance guide which guides a sheet conveyed from the supply tray toward the discharge tray, a reading sensor which reads an image on the sheet conveyed along the conveyance guide, and a discharge unit having a discharge opening for discharging the sheet to the discharge tray and moves from a third position to a fourth position in correspondence to reduction in the number of the sheets supported on the supply tray. A first timing for which the movable plate is to move and a second timing for which the discharge unit is to move are different.

An image reading apparatus includes a supply tray which support sheets and includes a movable plate configured to move in correspondence to reduction in a number of the sheets supported on the supply tray, a discharge tray which is located below the supply tray and supports discharged sheets, a conveyance guide which guides a sheet conveyed from the supply tray toward the discharge tray, a reading sensor which reads an image on the sheet conveyed along the conveyance guide, and a discharge unit having a discharge opening for discharging the sheet to the discharge tray and moves from a third position to a fourth position in correspondence to reduction in the number of the sheets supported on the supply tray. A first timing for which the movable plate is to move and a second timing for which the discharge unit is to move are different.

An image reading apparatus includes: a supply tray, which supports sheets to be supplied and includes a movable plate configured to move from a first position to a second position as the sheet supported by the supply tray is decreased, the second position being higher than the first position; a discharge tray; a conveyance guide; a reading sensor; a discharge unit, which includes a discharge opening to discharge the sheet conveyed by the conveyance guide to the discharge tray and is configured to move from a third position to a fourth position as the sheet supported by the paper feed tray is decreased, the fourth position being higher than the third position; and a first drive source, which generates a drive force, wherein the discharge unit is configured to move by receiving the drive force and to transmit the drive force to the movable plate.

A relay conveyance device includes a discharge unit which discharges a sheet toward a carry-in port, a decurling unit attached to the discharge unit, and a discharge adjustment mechanism capable of adjusting a height direction inclination of the discharge unit. The discharge adjustment mechanism is set to be capable of adjusting an inclination of the discharge unit such that the decurling unit maintains a predetermined reference position even when the discharge unit is supported by any of a plurality of unit supporting portions set according to a height position of the carry-in port.

A relay conveyance device includes a discharge unit which discharges a sheet toward a carry-in port, a decurling unit attached to the discharge unit, and a discharge adjustment mechanism capable of adjusting a height direction inclination of the discharge unit. The discharge adjustment mechanism is set to be capable of adjusting an inclination of the discharge unit such that the decurling unit maintains a predetermined reference position even when the discharge unit is supported by any of a plurality of unit supporting portions set according to a height position of the carry-in port.

The invention relates to a sheet depositing arrangement. The sheet depositing arrangement comprises at least one sheet depositing apparatus having a sheet stacking chamber for creating a sheet stack, and a sheet extraction device which in turn has a sheet transporting means that is drivable in a direction of circulation, a sheet delivery region for delivering the sheets to be stacked to the sheet stacking chamber, a sheet stacking region, provided downstream of the sheet delivery region, for stacking the sheets to be stacked into the sheet stacking chamber, and a return region, provided downstream of the sheet stacking region. Furthermore, the sheet depositing apparatus has a sheet retaining device with at least one sheet retaining element, arranged adjacent to the sheet stacking region, for preventing at least one sheet to be stacked from being drawn into the sheet extraction device from the sheet stacking chamber by the sheet transporting means.

The invention relates to a sheet depositing arrangement. The sheet depositing arrangement comprises at least one sheet depositing apparatus having a sheet stacking chamber for creating a sheet stack, and a sheet extraction device which in turn has a sheet transporting means that is drivable in a direction of circulation, a sheet delivery region for delivering the sheets to be stacked to the sheet stacking chamber, a sheet stacking region, provided downstream of the sheet delivery region, for stacking the sheets to be stacked into the sheet stacking chamber, and a return region, provided downstream of the sheet stacking region. Furthermore, the sheet depositing apparatus has a sheet retaining device with at least one sheet retaining element, arranged adjacent to the sheet stacking region, for preventing at least one sheet to be stacked from being drawn into the sheet extraction device from the sheet stacking chamber by the sheet transporting means.

A discharge unit includes a first discharge guide which guides the sheet conveyed by the conveyance guide, a second discharge guide which includes the discharge opening, and guides the sheet guided by the first discharge guide toward the discharge tray, and a discharge roller and a discharge pinch roller which are provided in the second discharge guide. The first discharge guide is rotatable around a first axis which is parallel with an axial direction of the discharge roller. The second discharge guide is connected to the first discharge guide to be rotatable around a second axis which is parallel with the first axis. An angle at which the second discharge guide is inclined with respect to a sheet supporting surface in the discharge tray is constant while the discharge unit is moving from the third position up to the fourth position.