IMAGE FORMING APPARATUS EQUIPPED WITH DEVELOPER REPLENISHMENT MECHANISM

摘要

An image forming apparatus capable of reducing an image defect even when an container is rotated for checking. A development unit forms an image by developing an electrostatic latent image on a photosensitive member. A drive unit rotates the container mounted to a mounting portion for replenishing the toner to the development unit. An output unit outputs a specified signal when detecting a predetermined portion of the container. A determination unit determines whether the container is mounted to the mounting portion according to the specified signal. A decision unit decides a toner replenishing amount based on image data. A controller controls the drive unit to execute a detecting operation that rotates the container when the determination unit does not determine that the container is mounted. A correction unit corrects the toner replenishing amount based on the output of the output unit when the detecting operation is executed.

主权项

1. An image forming apparatus comprising:
a photosensitive member; an exposure unit configured to expose the photosensitive member to form an electrostatic latent image on the photosensitive member; a development unit configured to form an image corresponding to the image data by developing the electrostatic latent image formed on the photosensitive member; a mounting portion configured to which a container is mountable, the container that contains toner; a drive unit configured to rotate the container mounted to the mounting portion for replenishing the toner in the container to the development unit; an output unit configured to output a predetermined signal when a predetermined portion of the container mounted to the mounting portion is detected, the predetermined portion being arranged in the rotation direction of the container that is rotated by the drive unit; a determination unit configured to determine whether the container is mounted to the mounting portion according to whether the predetermined signal is outputted from the output unit; a decision unit configured to decide a toner replenishing amount that should be replenished to the development unit; a controller configured to control the drive unit so as to execute a detecting operation that rotates the container in a case where the determination unit does not determine that the container is mounted to the mounting portion; and a correction unit configured to correct the toner replenishing amount based on the predetermined signal output by the output unit during the detecting operation is executed.