Cleaning unit, process cartridge incorporating same, and image forming apparatus incorporating same

A cleaning unit comprising:

• a brush rotary body disposed in contact with an image carrier provided in an image forming apparatus, the brush rotary body removing toner on the image carrier and holding the toner thereon;
• a toner collecting rotary body disposed in contact with the brush rotary body, the toner collecting rotary body collecting the toner held on the brush rotary body;
• a toner collecting blade disposed in contact with the toner collecting rotary body, the toner collecting blade scraping the toner adhered to the toner collecting rotary body;
• and
• a cleaning blade disposed in contact with the image carrier at a downstream side from the brush rotary body in a rotation direction of the image carrier, the cleaning blade member scraping the toner falling from the brush rotary body,
• wherein the image carrier, the brush rotary body, and the toner collecting rotary body rotate in the same direction,
• wherein the cleaning blade, the brush rotary body, and the toner collecting rotary body are located to cause a tangential line passing through a contact area of the brush rotary body and the toner collecting rotary body on an outer peripheral circle around a shaft of the brush rotary body to have an intersection point intersecting a non-contact surface of the cleaning blade disposed opposite to a contact portion of the cleaning blade with the image carrier.