Ribbon supply supporting structure in typewriters and...
Ribbon tension control means
Ribbon tensioning assembly
Ribbon tensioning device for ribbon cartridge
Ribbon tensioning means
Ribbon tensioning mechanisms
Ribbon tracking system
Ribbon tracking system
Right hand margin control system
Right hand margin zone control system
Robust bit scheme for a memory of a replaceable printer...
Roll paper feed device for printing machine
Roll paper terminal end detecting unit and method
Rolled paper holder and image forming apparatus...
Rolled-paper holding mechanism and a printer including same
Roller assembly
Rotary printing device with identifying means and method and...
Rotary printing device with identifying means and method and...
Rotary printing machine
Rotary wheel printer with variable intensity imprint