Digital flow pressure regulator

Direct image recording apparatus using toner

Disposable cartridge for ink drop printer

Disposable ink jet head

Disposable ink supply and nozzle system using a simple pump

Disposable inker cartridge and holder therefor

Disposable instrument pen with integral spring member

Disposable instrument pen with integral spring member

Disposable marker

Disposable marker and holder

Disposable markers adapted for constant width and close proximit

Disposable pen-reservoir

Disposable peristaltic pump assembly for facsimile printer

Disposable printing head for recording measuring instruments, an

Disposable stylus and reservoir

Drawing method and drawing instrument

Drive circuit for a drop-on-demand ink jet printer

Drive circuit for piezoelectric transducer in ink jet printers

Driving circuit for an ink jet recording head having resistor el

Driving ink jet recording elements