Printing head for a wire-type dot printer

Printing head for an impact printer

Printing head for printer

Printing head for use in dot printers

Printing head for use in wire impact dot printers having head co

Printing head for wire dot printer

Printing head for wire-dot printer

Printing head having a armature backstop

Printing head having a distortion element

Printing head having backstop structure

Printing head mounting device

Printing head of dot printer

Printing head of dot printer

Printing head of the impact type

Printing head of wire-dot impact printer

Printing head of wire-dot impact printer

Printing head structure of calculator having bold characters

Printing head supporting device

Printing head using staggered arrangement needles

Printing head with current passing through the print wire