Device of measuring concentration of developer liquid for...

Difference potential preventing image forming apparatus

Digital copying machine that automasks data for small originals

Digital densitometer with calibration and statistics

Document feeder which determines a document path using a determi

Document original simulator for image fogging detection, and ima

Double side printing apparatus

Driving device, image forming apparatus including driving...

Driving method for light-emitting elements

Droop compensated fuser

Dual density gray patch toner control

Dual resolution scanner

Duplex electro-photographic developing machine and method of...

Duplex image forming apparatus

Duplex image forming apparatus with control of heat supplied...

Duplex image forming apparatus with two image carriers and an im

Duplex image registration

Duplex image registration

Duplex image-forming apparatus

Dynamic adjustment of characteristics of an image forming appara