Image forming apparatus

An image forming apparatus for forming an image on a sheet, the image forming apparatus comprising:

• a sheet stacking unit on which sheets are to be stacked;
• an image forming unit configured to form an image on a sheet conveyed from the sheet stacking unit;
• a double-sided conveyance path along which the sheet, which has passed the image forming unit, is conveyed to the image forming unit again;
• a sheet plate having a shape extending in a sheet conveyance direction, wherein the sheet plate includes a fitting portion which is bent in a direction crossing a longitudinal direction of the sheet plate, on one side of the sheet plate in the longitudinal direction, and an engaging portion on the other side of the sheet plate in the longitudinal direction;
• a roller configured to obliquely convey the sheet so that a side end of the sheet in a width direction is abutted on the sheet plate;
• and
• a guide unit configured to form a part of the double-sided conveyance path and guide the sheet conveyed along the double-sided conveyance path,
• wherein the guide unit includes a positioning portion for positioning the fitting portion by coming in contact with a surface of the fitting portion, and a projection portion which projects from the guide unit,
• wherein the projection portion is disposed at a position facing the engaging portion of the sheet plate in the width direction, and
• wherein the engaging portion is abutted on the projection portion.