Patent ID: 9182701
Filing Date: 2015-11-10
Classification: G03G

Abstract:
1. An image forming apparatus, comprising: an image bearer; a charger configured to charge the image bearer; an electrostatic latent image former configured to form an electrostatic latent image on the image bearer; an image developer configured to develop the electrostatic latent image with a toner to form a visual toner image; a transferer configured to transfer the toner image on a transfer material; a toner concentration calculator configured to calculate a concentration of the toner; and an optical detector, wherein at least a toner patch image is formed on the image bearer with an irradiation quantity set such that an irradiated part potential is larger than a developing condition, the toner patch image is read by the optical detector, and a charging condition is corrected on the basis of a difference between a toner concentration of the toner patch image and a target toner concentration.