A transfer residual toner that has not been electrostatically transferred onto a transfer paper P at a transfer nip and remains on a surface of a photosensitive element is temporarily retained by an elastic blade of a toner retaining unit in a mechanical manner before reaching a latent image forming area. When passing through the latent image forming area, the transfer residual toner is returned onto the surface of the photosensitive member at such a timing that writing is not performed by an exposing unit on the surface of the photosensitive element.

 
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< Developing apparatus, process cartridge and image forming apparatus having toner leakage prevention member

> Belt device including an annular belt, and an image forming apparatus for detection of rotational angular speed or rotational angular displacement

> Subcutaneous analyte sensor

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