An image processing apparatus includes: a support surface configured to support a sheet, a sheet feeding roller configured to feed the sheet in a conveying direction, a separation member for separating the sheet one by one and positioned downstream of the sheet feeding roller in the conveying direction, and a regulating member displaceable between a first position where the regulating member abuts against a distal end of the sheet supported by the support surface to regulate passage of the sheet in the conveying direction between the sheet feeding roller and the separation member and a second position that is farther from a conveyance path than the first position and that allows passage of the sheet in the conveying direction. The regulating member has a wall surface that abuts against the distal end of the sheet and includes at least one protrusion on the wall surface.

A sheet feeding device includes a sheet loader, a first conveyor, a second conveyor, and a guide. The sheet loader is configured to load a sheet bundle including a sheet with a flap. The first conveyor is configured to convey the sheet with the flap loaded on the sheet loader. The second conveyor is disposed adjacent to the first conveyor. The guide is disposed below the flap of the sheet to be conveyed, between the second conveyor and the sheet loader in a sheet conveying direction of the sheet, and is configured to guide the sheet.

A sheet feeding device includes a sheet loader, a first conveyor, a second conveyor, and a guide. The sheet loader is configured to load a sheet bundle including a sheet with a flap. The first conveyor is configured to convey the sheet with the flap loaded on the sheet loader. The second conveyor is disposed adjacent to the first conveyor. The guide is disposed below the flap of the sheet to be conveyed, between the second conveyor and the sheet loader in a sheet conveying direction of the sheet, and is configured to guide the sheet.

A document feeder includes a device body, and an opening and closing cover which is provided to be openable and closable with respect to the device body, and including a paper feed roller and a paper feed roller drive shaft on the device body. The document feeder includes a guide member, which is mounted rotatably to the paper feed roller drive shaft on an outer side of the paper feed roller in a roller axis direction thereof. The guide member guides a document being conveyed, in a state where the opening and closing cover is closed, by being opposed to the paper feed roller drive shaft in a predetermined orientation.

According to an embodiment, a sheet feeding mechanism includes a first elastic body. The first elastic body blocks a first reference line and a second reference line. The first elastic body has a first angle formed between the first elastic body and the first reference line, the first angle being an acute angle. The first reference line is a reference line along a take-out direction by the first roller. The second reference line is a reference line connecting a nip between the second roller and the third roller and a contact position of the first roller and a sheet.

According to an embodiment, a sheet feeding mechanism includes a first elastic body. The first elastic body blocks a first reference line and a second reference line. The first elastic body has a first angle formed between the first elastic body and the first reference line, the first angle being an acute angle. The first reference line is a reference line along a take-out direction by the first roller. The second reference line is a reference line connecting a nip between the second roller and the third roller and a contact position of the first roller and a sheet.

A sheet feeding apparatus includes an apparatus body including an abutting portion, an opening/closing member, a stacking member, a feeding member, a conveyance unit including a separation portion, and a guide configured to guide a leading edge of the sheet conveyed by the feeding member from the stacking member toward the separation portion. The guide includes a supported portion supported pivotably by the apparatus body and an abutted portion configured to be abutted against the abutting portion. The guide is configured to move in interrelation with an operation of closing the opening/closing member and to be positioned inside the apparatus body with respect to the opening/closing member in the closed state of the opening/closing member. In the opened state of the opening/closing member, the guide is configured to be restricted from pivoting by the abutted portion being abutted against the abutting portion.

A sheet feeding apparatus includes an apparatus body including an abutting portion, an opening/closing member, a stacking member, a feeding member, a conveyance unit including a separation portion, and a guide configured to guide a leading edge of the sheet conveyed by the feeding member from the stacking member toward the separation portion. The guide includes a supported portion supported pivotably by the apparatus body and an abutted portion configured to be abutted against the abutting portion. The guide is configured to move in interrelation with an operation of closing the opening/closing member and to be positioned inside the apparatus body with respect to the opening/closing member in the closed state of the opening/closing member. In the opened state of the opening/closing member, the guide is configured to be restricted from pivoting by the abutted portion being abutted against the abutting portion.

Perforated endless conveying belts are stretched between drive and idle rollers. A suction box is arranged between upper and lower belt portions of the perforated endless conveying belts. Abutment members are attached to positions of a support corresponding to the perforated endless conveying belts and pressed against the perforated endless conveying belts. The upstream of the suction box from the abutment members forms an attracting area, and intake holes are formed therein. Lifting plates extend to at least an intake hole range of the attracting area between the perforated endless conveying belts. The lifting plates move between a first position to vertically open the intake holes and project from conveying surfaces of the perforated endless conveying belts and a second position to close the intake holes and retract from the conveying surfaces of the perforated endless conveying belts.

Perforated endless conveying belts are stretched between drive and idle rollers. A suction box is arranged between upper and lower belt portions of the perforated endless conveying belts. Abutment members are attached to positions of a support corresponding to the perforated endless conveying belts and pressed against the perforated endless conveying belts. The upstream of the suction box from the abutment members forms an attracting area, and intake holes are formed therein. Lifting plates extend to at least an intake hole range of the attracting area between the perforated endless conveying belts. The lifting plates move between a first position to vertically open the intake holes and project from conveying surfaces of the perforated endless conveying belts and a second position to close the intake holes and retract from the conveying surfaces of the perforated endless conveying belts.