Image Forming Apparatus

An image forming apparatus configured to form an image on both sides of a recording medium, comprising:

• an image forming unit configured to form an image on a recording medium;
• a switchback roller configured to switch back the recording medium having a first image on a first side thereof fed from the image forming unit;
• a first feeding portion configured to vertically feed the recording medium switched back by the switchback roller, the first feeding portion including:
• a feed roller assembly configured to move the recording medium diagonally downward toward a first side in a widthwise direction;
• and
• a first position restriction member extending vertically and configured to restrict the recording medium, moved diagonally downward toward the first side in the widthwise direction by the feed roller assembly, from moving past a position toward the first side in the widthwise direction;
• and
• a second feeding portion connecting the first feeding portion and configured to horizontally feed the recording medium, moved diagonally downward toward the first side by the feed roller assembly of the first feeding portion and restricted from moving past the position toward the first side in the widthwise direction by the first position restriction member of the first feeding portion, for forming a second image on a second side of the recording medium by the image forming unit, the second feeding portion including:
• a guide portion configured to horizontally guide a corner of the recording medium, moved diagonally downward toward the first side by the first feeding portion and restricted from moving past the position toward the first side in the widthwise direction by the first position restriction member, toward a second side opposite the first side in the widthwise direction;
• a second feed roller configured to move the recording medium, guided to the second side by the guide portion, toward the first side in the widthwise direction while horizontally feeding the recording medium;
• and
• a second position restriction member configured to restrict the recording medium moved toward the first side horizontally by the second feed roller from moving past a position toward the first side in the widthwise direction,
• wherein the feed roller assembly of the first feeding portion includes a first roller and a second roller pressed against the first roller, and a nip pressure between the first roller and the second roller on the first side of the feed roller assembly in the widthwise direction is smaller than a nip pressure between the rollers on the second side.