Patent ID: 9244374
Filing Date: 2016-01-26
CPC Classification: G03G

Claim Text:
1. An image forming apparatus, comprising: a process unit detachably attachable relative to a main body of the image forming apparatus, the process unit including, as a single integrated unit, a latent image writer to write the latent image on the surface of the latent image bearing member charged by the charging device; a power source to output a charging bias supplied to the charging device; a process-unit detector to detect detachment and attachment of the process unit relative to the main body of the image forming apparatus; and a controller operatively connected to the power source to cause the power source to output the charging bias at a predetermined target level, the process unit further including a first storage device to store correction information for calculating the predetermined target level of the charging bias in accordance with a combination of the latent image bearing member and the charging device, the controller correcting the predetermined target level based on the correction information stored in the first storage device, wherein the controller includes a second storage device, and based on detection of detachment and attachment of the process unit by the process unit detector the controller reads the correction information from the first storage device and stores in the second storage device one of the correction information read from the first storage device and a predetermined calculation result based on the correction information to correct the predetermined target level of the charging bias.