A spring is located between a separation pad and a frame. The frame is configured to receive a downward reaction force that is a reaction force of an urging force of a spring. A rotation shaft and a contact piece are located at one side of the separation pad in a width direction. The frame has an upper edge in a first region defined between one end and another end of the rotation shaft in the width direction. A height of the upper edge in the first region is at a same height or below a rotation axis. The frame includes a standing wall in a second region in the width direction. The standing wall extends farther upward than the upper edge in the first region. The second region includes a region in which the separation pad is located. The second region is other than the first region.

An automatic document feeder includes a feeding path, a pickup roller assembly arranged at an upstream of the feeding path for feeding documents into the feeding path, an ejecting tray arranged at a downstream of the feeding path for loading the ejected documents, a paper feeding roller assembly arranged in the feeding path, a paper ejecting roller assembly arranged at the downstream of the feeding path, an anti-drawing arm arranged between the paper ejecting roller assembly and the ejecting tray, and a paper feeding motor. The paper feeding motor drives the pickup roller assembly, the paper feeding roller assembly and the paper ejecting roller assembly.

Provided is a sheet processing device that includes a guide, a support section, a stacker, and a gate. The guide is provided with a conveyance surface along a conveyance direction of a sheet. The support section is configured to form a conveyance path of the sheet together with the guide. The stacker is provided with a stack surface that supports a surface of the sheet conveyed through the conveyance path. The gate is configured to be able to receive the sheet into the stacker. The gate includes a first extension part and a second extension part. A plurality of first extension parts are disposed at intervals in a direction orthogonal to each of a normal direction of the stack surface and the conveyance direction. The second extension part is disposed to close spacing between two of the adjacent first extension parts in the orthogonal direction.