Inventor
UMEZAWA KAZUMI
38 patents
⚠️ This page may combine multiple inventors who share the name “UMEZAWA KAZUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
36 patentsUS4017170AApr 12, 1977
Electrophotographic device
CANON KK20 citations82
US4734748AMar 29, 1988
Auxiliary machine supporting structure for image forming apparatus
CANON KK21 citations81
US4124296ANov 7, 1978
Original urging device
CANON KK26 citations81
US4110029AAug 29, 1978
Liquid developer for an electrostatic copying device
CANON KK24 citations81
US3957368AMay 18, 1976
Optical system for copying sheet originals and thick orginals
CANON KK21 citations81
US4234305ANov 18, 1980
Transfer sheet guiding device
CANON KK23 citations80
US4896190AJan 23, 1990
Image forming apparatus with battery
CANON KK8 citations74
US4437757AMar 20, 1984
Image forming apparatus with cleaning means
CANON KK12 citations74
US4330199AMay 18, 1982
Electrophotographic device
CANON KK9 citations74
US4319828AMar 16, 1982
Copying apparatus with a heated photosensitive drum
CANON KK12 citations74
US4270857AJun 2, 1981
Copying apparatus for sheet originals and thicker originals
CANON KK8 citations74
US4222659ASep 16, 1980
Copying apparatus for sheet originals and thicker originals
CANON KK9 citations74
US4205622AJun 3, 1980
Electrophotographic developing apparatus having developer and refreshing rollers for liquid developers
CANON KK11 citations74
US4190464AFeb 26, 1980
Method for cleaning a photoconductive surface with liquid toner
CANON KK7 citations74
US4158499AJun 19, 1979
Buffer device for the scanning mechanism of an electrostatic copier
CANON KK8 citations74
US4155641AMay 22, 1979
Apparatus for scanning an original in a copying machine
CANON KK14 citations74
US4154524AMay 15, 1979
Copying apparatus for thick and sheet originals
CANON KK14 citations74
US4071295AJan 31, 1978
Copying apparatus for sheet originals and thicker originals
CANON KK8 citations74
US3948586AApr 6, 1976
Jam detecting device in a copying machine
CANON KK11 citations74
US4763164AAug 9, 1988
Image forming apparatus
CANON KK5 citations73
US4312587AJan 26, 1982
Image forming apparatus
CANON KK12 citations73
US4193483AMar 18, 1980
Latch operated coil spring clutch
CANON KK9 citations73
US4192608AMar 11, 1980
Copying apparatus
CANON KK9 citations73
US3994582ANov 30, 1976
Original keep device in copying machine
CANON KK13 citations73
US4662740AMay 5, 1987
Electrophotographic device
CANON KK3 citations63
US4421402ADec 20, 1983
Electrophotographic device
CANON KK3 citations63
US4179116ADec 18, 1979
Separating mechanism
CANON KK6 citations63
US4146324AMar 27, 1979
Liquid developing device in electrophotographic copying apparatus
CANON KK6 citations63
US4013354AMar 22, 1977
Apparatus for separating transfer material in an electrostatic copying device
CANON KK5 citations63
US4009955AMar 1, 1977
Copying apparatus for sheet originals and thicker originals
CANON KK2 citations63
US3999850ADec 28, 1976
Optical system for an electrophotographic device
CANON KK2 citations63
US5420666AMay 30, 1995
Image forming apparatus having start and stop keys integrally connected in the same matrix circuit
CANON KK1 citations62
US5117260AMay 26, 1992
Image forming apparatus having streamlined input for control signals
CANON KK2 citations62
US4185909AJan 29, 1980
Cleaning method and device for electrophotographic machine
CANON KK1 citations52
US4088872AMay 9, 1978
Repeating mechanism for a copying apparatus
CANON KK1 citations52
US5223899AJun 29, 1993
Image forming apparatus having stationary exposure mode and dynamic exposure mode
CANON KK0 citations41