Printing head of wire-dot impact printer

Printing head of wire-dot impact printer

Printing head using staggered arrangement needles

Printing head with current passing through the print wire

Printing head with springs for pivotably holding printing hammer

Printing machine with throat for front loading of sheets

Printing mechanism

Printing mechanism for an impact matrix printer

Printing mechanism for dot matrix printers

Printing method for dot impact type serial printer

Printing method, printing device and time recorder

Printing needle apparatus

Printing process using a plurality of drive signal types

Printing process using a plurality of drive signal types

Printing solenoid

Printing solenoid

Printing system in dot printer

Printing wire

Printing wire for use in a matrix printer and method for making

Process of printing with serial printhead