Dot printer with age compensation means
Dot printer with toner characteristic compensation means
Dot recording apparatus
Drive circuits for spark-discharge imaging apparatus
Drive circuits for spark-discharge imaging apparatus
Driver for a diode laser
Driving method and apparatus for optical printer with liquid-cry
Drum plotter
Dual beam recorder
Dual intensity laser beam picture recording method
Dual interaction TIR modulator
Dual mode laser printer
Dual-line time recorder
Dustproof transparent member
Dynamic focusing system for use with discontinuous medium
Elapsed time recorder
Electric actuating device
Electric discharge printing device having a laminar stylus
Electric discharge recording method and material with non-record
Electric graphic recorder