Document reader

Document security system having thermo-activated pantograph...

Document set with stub and narrow transfer strip

Document storage in printers

Document transfer device

Donor element for thermal imaging containing infra-red...

Donor material for carbonless copying

Donor material for carbonless copying and coating...

Donor sheet for pulsed electrical printing

Donor-receptor copy paper

Door and spring assembly for a paper feed mechanism

Door manufacturing system and method

Dot matrix character printer with variable speed control

Dot matrix fraction font

Dot matrix impact printer having retractable platen

Dot matrix print head

Dot matrix print head

Dot matrix print head

Dot matrix print head

Dot matrix print head