Adjustable media advancement mechanism

Advancing device in electrically driven typewriters and similar

Apparatus and method for minimizing printer scan error

Apparatus for advancing a record medium

Apparatus for feeding recording paper forwardly and backwardly

Apparatus having a roller for driving a record carrier and havin

Buckling one way clutch

Device for controlling the rotary movement of a platen

Device for printing out indices and powers in typewriters

Dot matrix printer

Drive for friction rolls in printers

Drive force transmission mechanism

Electric platen driving device with manual override

Electromagnetic line spacing device

Force transferring magnetic actuator apparatus and method

Gear unit apparatus for printer

High speed printer assembly

Image forming apparatus, and method thereof

Indexing planetary gear train for a printer

Intermittent paper feed mechanism