Assignee
DELPHAX SYSTEMS
US47 patents
Top patents by PatentIndex Score
US5103263AApr 7, 1992
Powder transport, fusing and imaging apparatus
DELPHAX SYSTEMS97 citations95
US5315324AMay 24, 1994
High precision charge imaging cartridge
DELPHAX SYSTEMS102 citations93
US5278588AJan 11, 1994
Electrographic printing device
DELPHAX SYSTEMS39 citations92
US5293537AMar 8, 1994
Image transport fusing system
DELPHAX SYSTEMS31 citations91
US5014076AMay 7, 1991
Printer with high frequency charge carrier generation
DELPHAX SYSTEMS37 citations90
US4718657AJan 12, 1988
Paper stacker
DELPHAX SYSTEMS79 citations90
US4992807AFeb 12, 1991
Gray scale printhead system
DELPHAX SYSTEMS32 citations89
US5012291AApr 30, 1991
Powder transport, fusing and imaging apparatus
DELPHAX SYSTEMS22 citations88
US4448872AMay 15, 1984
Duplex imaging with pressure transfixing
DELPHAX SYSTEMS35 citations85
US4779105AOct 18, 1988
Printer interface
DELPHAX SYSTEMS30 citations83
US4841313AJun 20, 1989
RF driver and control
DELPHAX SYSTEMS22 citations82
US5166709ANov 24, 1992
Electron DC printer
DELPHAX SYSTEMS19 citations81
US4891656AJan 2, 1990
Print cartridge with non-divergent electrostatic field
DELPHAX SYSTEMS22 citations81
US4619515AOct 28, 1986
Electrostatic printing apparatus and method
DELPHAX SYSTEMS22 citations78
US5886723AMar 23, 1999
Charge deposition print head and method of printing
DELPHAX SYSTEMS8 citations73
US5414498AMay 9, 1995
Liquid/dry toner imaging system
DELPHAX SYSTEMS8 citations73
US5390011AFeb 14, 1995
Compact imaging roll printer
DELPHAX SYSTEMS13 citations73
US5177503AJan 5, 1993
Print system and dielectric imaging member
DELPHAX SYSTEMS6 citations73
US4879569ANov 7, 1989
Multiple source charged particle generation
DELPHAX SYSTEMS7 citations73
US4734722AMar 29, 1988
Ion generator structure
DELPHAX SYSTEMS23 citations73
US4999653AMar 12, 1991
Venetian blinding
DELPHAX SYSTEMS11 citations72
US4842262AJun 27, 1989
Document inverter
DELPHAX SYSTEMS13 citations72
US4476387AOct 9, 1984
Corona charging apparatus
DELPHAX SYSTEMS9 citations72
US4692017ASep 8, 1987
Toner transfer apparatus
DELPHAX SYSTEMS14 citations71
US4745421AMay 17, 1988
Ionic print cartridge and printer
DELPHAX SYSTEMS10 citations70
US4446371AMay 1, 1984
Corona charging apparatus
DELPHAX SYSTEMS10 citations70
US5003327AMar 26, 1991
Printer autocontrast control
DELPHAX SYSTEMS19 citations69
US4516847AMay 14, 1985
Electrostatic printing apparatus and method
DELPHAX SYSTEMS13 citations69
US4494129AJan 15, 1985
Electrostatic printing apparatus
DELPHAX SYSTEMS21 citations69
US5030975AJul 9, 1991
Charge transfer imaging cartridge
DELPHAX SYSTEMS9 citations68
US4890123ADec 26, 1989
Print cartridge
DELPHAX SYSTEMS9 citations68
US5113223AMay 12, 1992
Printer flash fusing system
DELPHAX SYSTEMS17 citations67
US5006869AApr 9, 1991
Charged particle printer
DELPHAX SYSTEMS13 citations66
US4958172ASep 18, 1990
Charge transfer imaging cartridge
DELPHAX SYSTEMS11 citations66
US5763131AJun 9, 1998
Liquid toner and imaging system
DELPHAX SYSTEMS14 citations65
US5239318AAug 24, 1993
Finger driver and printer
DELPHAX SYSTEMS15 citations65
US4990942AFeb 5, 1991
Printer RF line control
DELPHAX SYSTEMS9 citations65
US4839671AJun 13, 1989
Selectable density charge deposition printing system
DELPHAX SYSTEMS9 citations65
US5450103ASep 12, 1995
Charge imaging system with back electrode dot enhancement
DELPHAX SYSTEMS5 citations62
US5159358AOct 27, 1992
Divided screen printer
DELPHAX SYSTEMS6 citations62
US4879571ANov 7, 1989
Duplex printing device
DELPHAX SYSTEMS19 citations60
US5016190AMay 14, 1991
Development of raster scan images from independent cells of imaged data
DELPHAX SYSTEMS5 citations59
US5142248AAug 25, 1992
Plural selectable RF oscillators for supplying capacitive loads
DELPHAX SYSTEMS3 citations58
US5293205AMar 8, 1994
Side to side sheet inverter
DELPHAX SYSTEMS4 citations57
US4951070AAug 21, 1990
Charge transfer imaging cartridge mounting and printer
DELPHAX SYSTEMS6 citations57
US5955236ASep 21, 1999
Liquid toner and imaging system
DELPHAX SYSTEMS5 citations54
US4548490AOct 22, 1985
Toner feeder system
DELPHAX SYSTEMS6 citations53