Optical scanning apparatus and image forming apparatus including the same

An optical scanning apparatus comprising:

• first and second light source units including respective light sources;
• a rotating polygon mirror that performs deflection scanning of laser beams emitted from the light sources of the first and second light source units;
• an optical box accommodating the rotating polygon mirror, the optical box includes;
• a first abutting portion on which the first light source unit abuts configured to position first light source unit, and a second abutting portion on which the second light source unit abuts configured to position the second light source unit,
• wherein the first and second light source units are arranged next to each other in a rotation axis direction of the rotating polygon mirror,
• a first pressing member pressing the first light source unit toward the first abutting portion to fix the first light source unit to the abutting portion, and
• a second pressing member pressing the second light source unit toward the second abutting portion to fix the second light source unit to the second abutting portion,
• wherein the first and second abutting portions are formed on a single member,
• wherein the single member is a part of the optical box and is molded integrally with the optical box;
• wherein the single member is disposed between the first and second light source units in the rotation axis direction;
• wherein the first and second abutting portions formed on the single member face away from each other in the rotation axis direction, and
• wherein a pressing direction by the first pressing member and a pressing direction by the second pressing member are faced each other.