IMAGE FORMING APPARATUS

摘要

In an image forming apparatus, to provide a lubrication effect for an abutment portion of a transfer belt and a belt cleaning blade, when a control toner image is supplied, the control toner image is supplied to the abutment portion even when it is not necessary, thereby consuming a large amount of toner. In the image forming apparatus, the control unit changes a toner amount of the control toner image reaching the abutment portion of a photosensitive member and a photosensitive member cleaning blade and the toner amount thereof reaching the abutment portion of a transfer belt and a belt cleaning blade, based on a detection result of an environment detection unit.

主权项

1. An image forming apparatus comprising:
an image bearing member on which an electrostatic latent image is formed; a developing unit configured to develop the electrostatic latent image; a first cleaning blade configured to clean a surface of the image bearing member; a transfer belt configured to transfer a toner image onto a recording medium; a second cleaning blade configured to clean a surface of the transfer belt; an environment detection unit configured to detect an environment; and a control unit capable of performing toner supply control for developing a control toner image on the image bearing member by the developing unit at timing other than image formation, wherein the control unit changes an amount of toner, of the control toner image, reaching an abutment portion of the image bearing member and the first cleaning blade and an amount of toner thereof reaching an abutment portion of the transfer belt and the second cleaning blade, based on a detection result by the environment detection unit.