Color toner density sensor and image forming apparatus using the

Color-image forming apparatus having intermediate transfer membe

Compact document measuring system for electronic document imagin

Compact image forming apparatus with a moveable optical sensor

Compensating optical measurements of toner concentration for...

Concentration measuring device of electrographic printer

Configured to enhance toner collecting efficiency and toner rede

Constant displacement oil web system and method of operating...

Contact charger having an oscillating voltage for charging a pho

Contact charger of an electrophotographic image forming apparatu

Continuous-sheet printing tandem electrophotography system...

Control device and method to control an electrophotographic...

Control device for an attraction roller

Control for a fixing device in an image forming apparatus

Control for cleaning image carrier surface in image forming...

Control method and circuit for transfer current, and printer...

Control method and image forming apparatus

Control method for a transfer process in an electrophotographic

Control method for correcting sensitivity of toner density...

Control of a power supply for a transfer unit in an image...