Patent ID: 9594340
Date: 2017-03-14
CPC Classifications: G03G

Claim:
1. An image forming apparatus comprising: an image bearing body; a developing unit configured to develop an electrostatic latent image formed on the image bearing body as a toner image; a transfer unit configured to transfer the toner image to a receiver medium; a cleaning member configured to collect residual toner on the image bearing body after transfer; a lubricant supply unit configured to supply lubricant onto the image bearing body; a measurement unit configured to measure a static frictional force generated between the image bearing body and the cleaning member; and a control unit configured to estimate a state of the lubricant on the image bearing body based on a change between a first static frictional force measured by the measurement unit and a second static frictional force measured by the measurement unit after execution of processing of removing which has been executed to remove the lubricant on the image bearing body after the measurement of the first static frictional force, and based on the estimated state of the lubricant, selectively execute one of processing from the options including processing of supplying lubricant onto the image bearing body and processing of removing lubricant on the image bearing body.