Droplet stream alignment for jet printers
Droplets forming device
Droplets jetting device
Drum plotter
Drum type hard copy apparatus
Dry transfer lettering system and method
Dual beam recorder
Dual cavity drop generator
Dual density two-sided thermal head
Dual intensity laser beam picture recording method
Dual interaction TIR modulator
Dual mode ink jet printer
Dual mode laser printer
Dual mode thermal printer
Dual reservoir and valve system for an ink jet head
Dual sensor for multi-nozzle ink jet
Dual toggle mechanism for pressing a thermal printing head again
Dual-line time recorder
Dual-mode recorder system
Duplex print apparatus