IMAGE FORMING APPARATUS INCLUDING OPTICAL PRINT HEAD

An image forming apparatus includes a drum cartridge including a photosensitive drum, a movable optical print head including a light emitting element and a lens array, a cleaning member and a portion-to-be-contacted. The cleaning member includes a gripping portion to be gripped by the operator, a sliding portion configured to slide on and clean the light emergent surface, and a project portion projecting from the cleaning member. Said project portion is provided on said cleaning member between said gripping portion and said sliding portion with respect to longitudinal direction of said cleaning member. The photosensitive drum and a light emergent surface of the lens array are spaced from each other to permit insertion of said cleaning member therebetween. The portion-to-be-contacted provided in a main assembly and configured to be contacted by the cleaning member to prevent further insertion of said cleaning member cleaning said light emergent surface.