US 12,072,656 B1
Image forming apparatus abnormality detection
Koji Takahashi, Tokyo (JP)
Assigned to TOSHIBA TEC KABUSHIKI KAISHA, Tokyo (JP)
Filed by TOSHIBA TEC KABUSHIKI KAISHA, Tokyo (JP)
Filed on Mar. 16, 2023, as Appl. No. 18/184,750.
Int. Cl. G03G 15/00 (2006.01)
CPC G03G 15/55 (2013.01) [G03G 15/5016 (2013.01)] 23 Claims
OG exemplary drawing
 
1. An image forming apparatus, comprising:
an image bearing member;
a charging roller configured to charge the image bearing member;
an exposure component configured to form an electrostatic latent image on a surface of the image bearing member;
a developing device configured to develop the electrostatic latent image formed on the surface of the image bearing member into a toner image;
a transfer roller configured to transfer a toner image from the image bearing member;
a controller configured to detect a resistance detection voltage of the transfer roller as a voltage for indicating that an abnormality exists in the image bearing member; and
a detector configured to detect the resistance detection voltage, resulting in a detected resistance detection voltage,
wherein the controller is further configured to:
determine whether or not the abnormality exists in the image bearing member based on the detected resistance detection voltage,
detect a waveform corresponding to a temporal change in the resistance detection voltage for each rotation of the image bearing member, resulting in a detected waveform, and
determine whether or not the abnormality exists in the image bearing member based on the detected waveform.