Dot printer timing assembly

Dot printing mechanism for dot matrix line printers

Dot printing mechanism for dot matrix line printers

Dot-matrix printer with font cartridge unit

Dot-matrix printer with font cartridge unit

Double line electrode unit for electro-coagulation printer...

Double speed dot matrix printhead

Double tab rack for a typewriter

Drive circuit for printing head

Drive for the movable portion of a printer

Drive mechanism

Drive mechanism for printer carriage and ink ribbon

Drive mechanism for transaction printer

Drive roller assembly

Driver circuit for a self-scanning light-emitting element array

Driver ic chip and print head

Driving force control system for impact printer

Drop charge compensated ink drop video printer

Drop charging apparatus

Drop charging bar