A sheet feeding device includes: an accommodating unit having a placement surface on which the stack of sheets is mounted; an inclined member having an inclined surface inclined relative to the placement surface to extend in an inclined direction and a back surface opposite the inclined surface; a sheet pick-up unit for feeding an uppermost sheet in the stack of sheets toward the inclined member; and a sheet separating member provided on the inclined surface. The sheet separating member includes a plurality of separation pieces and a support portion those made of resin. The support portion supports the separation pieces at positions closer to the back surface than to the inclined surface so that the separation pieces are movable away from the placement surface in the inclined direction and toward the back surface in a normal direction of the inclined surface independently from one another.

A holder supports a separation member. When a sheet cassette is attached to a main body portion, as the sheet cassette is moved in its attachment direction, a moving mechanism causes the holder to move from an initial position to an operation position. When the holder is at the initial position, the separation member is spaced from a feeding member and is able to pass below the feed-out member. When at the operation position, the holder presses the separation member against the feeding member. When the sheet cassette is attached to the main body portion, the moving mechanism causes the holder to move to the operation position after the separation member passes below the feed-out member. When the sheet cassette is drawn from the main body portion, the moving mechanism causes the holder to move to the initial position before the separation member reaches below the feed-out member.

A reading apparatus to convey a document set on a document tray and to read an image of the conveyed document includes a control unit and a determining unit. The control unit performs lifting control for lifting the document tray in a case where a first condition is satisfied and performs lowering control for lowering the document tray in a case where a second condition is satisfied. The determining unit determines whether a predetermined period elapses after the lifting control of previous time is started. The control unit does not perform the lowering control even if the second condition is satisfied in a case where the determining unit determines that the predetermined period does not elapse.

A document conveyance apparatus includes a feed roller, a first and a second conveyance rollers, a conveyance shaft, an arm portion rotatably moving the feed roller to a standby position to a feeding position, a transmission portion transmitting rotation of the conveyance roller shaft to the arm portion, and a torque limiter. The feed roller and the first conveyance roller rotate in a conveyance direction when the conveyance roller shaft rotates in a first direction, and the feed roller moves from a feeding position to a standby position when the conveyance roller shaft rotates in a second direction. When a document fed by the second conveyance roller moves through a nip portion, a transmission portion does not transmit rotation of the first conveyance roller rotated in the second direction by the separation roller to an arm portion by operation of the torque limiter.

A document reading apparatus having a display unit and a placement section on which plural documents is to be placed includes a conveyance unit and a reading unit. The conveyance unit conveys a document placed on the placement section. The reading unit reads a document conveyed by the conveyance unit and generates image data. Based on at least a reading mode being set on the document reading apparatus of reading a plurality of documents of a plurality of different sizes in a single job by the reading unit, first prompting information that prompts placement of the plurality of documents at a center of the placement section in a direction perpendicular to a document conveyance direction in which the conveyance unit conveys the plurality of documents is displayed on the display unit.

A sheet feeding device includes a sheet accommodating portion for accommodating a sheet, a feeding roller for feeding the sheet by rotation thereof in a state in which the feeding roller contacts an uppermost sheet accommodated in the sheet accommodating portion, a detecting portion for detecting a surface property of the sheet accommodated in the sheet accommodating portion, a changing means for changing contact pressure of the feeding roller to the uppermost sheet, and a controller for controlling the changing means so as to change the contact pressure on the basis of a result of the surface property of the sheet detected by the detecting portion.

A sheet feeding apparatus includes a sheet supporting portion configured to support a sheet, a feed rotary member configured to feed the sheet supported by the sheet supporting portion, a curved conveyance path through which the sheet fed by the feed rotary member passes and which is curved upward, an upper conveyance path disposed above the sheet supporting portion so as to pass through a sheet and configured to join with the curved conveyance path, and a driven rotary member disposed inside of the curved conveyance path in a curved direction thereof and driven to rotate by the sheet passing though the curved conveyance path.

A medium conveyance device includes a guiding member that is movably supported on a frame, a pick roller that is rotatably supported on the guiding member and that rotates to feed a medium that is placed on a tray to a feed roller, and a joint unit that transmits a rotation force from a drive shaft to the pick roller.

An electric paper tray includes a base, a paper holding element pivotally mounted to at least one side of the base, a power unit arranged at the base, and a lifting module connected between the paper holding element and the power unit. The lifting module is movably mounted under the paper holding element. When the lifting module is driven by the power unit to move to a first position, with respect to the base, the lifting module drives the paper holding element to make the paper holding element rotate to a closed position, when the lifting module is driven by the power unit to move to a second position, with respect to the base, the lifting module drives the paper holding element to make the paper holding element rotate to an opened position.

A printing apparatus determines a change in torque of a motor that moves a pick arm for translating print media, determines based on the change in torque whether a media in present adjacent to the pick arm.