When a user changes a density adjusting value (developing contrast), and even variations and usage state of the process characteristics (photosensitive body and developing) of the cartridge change, the amount of recording agent consumed can be suppressed low, and a sharp line image can be recorded. An...http://www.google.com.au/patents/US20020097314?utm_source=gb-gplus-sharePatent US20020097314 - Process cartridge, image forming apparatus, and image forming method
