P

Inventor

OKAMOTO TOYOO

17 patents
⚠️ This page may combine multiple inventors who share the name “OKAMOTO TOYOO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

RICOH KK

16 patents
US4166702ASep 4, 1979

Device for detecting a toner concentration in a developing solution

RICOH KK20 citations82
US4208122AJun 17, 1980

Reproduction apparatus comprising sorting device

RICOH KK22 citations79
US4247195AJan 27, 1981

Bias device for a copying machine

RICOH KK8 citations74
US4159172AJun 26, 1979

Transfer sheet separator for use with electrophotographic copying machine

RICOH KK13 citations74
US5512927AApr 30, 1996

Image forming apparatus having a photosensitive drum rotatable at different speeds

RICOH KK11 citations73
US4400081AAug 23, 1983

Apparatus for cleaning photosensitive member of electrostatic copying machine

RICOH KK11 citations73
US4203144AMay 13, 1980

Corona charger for image transfer

RICOH KK12 citations73
US4165172AAug 21, 1979

Drum cleaning system for electrophotographic apparatus

RICOH KK10 citations73
US4149485AApr 17, 1979

Apparatus for forming a uniform liquid film on a roller

RICOH KK7 citations73
US4056315ANov 1, 1977

Squeeze roller retraction assembly

RICOH KK17 citations73
US4011353AMar 8, 1977

Apparatus for forming a uniform liquid film on a roller

RICOH KK7 citations73
US4006709AFeb 8, 1977

Developing unit for electrophotography

RICOH KK9 citations73
US3941469AMar 2, 1976

Dry type developing device for a copying apparatus or like apparatus

RICOH KK15 citations73
US4324485AApr 13, 1982

Electrostatic copying apparatus

RICOH KK7 citations71
US4168329ASep 18, 1979

Auto-bias developing process and an electrophotographic copying machine

RICOH KK11 citations71
US4095884AJun 20, 1978

Exposure controlling apparatus for electrophotographic copying machine

RICOH KK5 citations63

TOHOKU RIKO KK

1 patent