Inventor
MARUO SEIJI
JP19 patents
⚠️ This page may combine multiple inventors who share the name “MARUO SEIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
13 patentsUS6085051AJul 4, 2000
Small-size color electro-photographic apparatus
HITACHI LTD37 citations96
US5666599ASep 9, 1997
Color electro-photographic printing apparatus
HITACHI LTD81 citations96
US6574451B2Jun 3, 2003
Small-size color electro-photographic apparatus
HITACHI LTD18 citations92
US5959655ASep 28, 1999
Light beam scanning apparatus which controls power and spot shape of light beam
HITACHI LTD22 citations92
US5815775ASep 29, 1998
Color electro-photographic apparatus
HITACHI LTD29 citations92
US5666598ASep 9, 1997
Image forming method and apparatus using energy beam impingement on image forming particles to move the same
HITACHI LTD24 citations92
US5668590ASep 16, 1997
Optical beam scanning system with rotating beam compensation
HITACHI LTD13 citations74
US5255112AOct 19, 1993
Optical scanning apparatus and system
HITACHI LTD19 citations74
US6055256AApr 25, 2000
Laser beam printer and semiconductor laser device suitable for a light source thereof
HITACHI LTD7 citations73
US5884119AMar 16, 1999
Light exposure controlling method of electrophotographic apparatus for suppressing fringe in picture
HITACHI LTD12 citations73
US5809053ASep 15, 1998
Semiconductor laser device and optical printing apparatus using the same
HITACHI LTD16 citations73
US6836632B2Dec 28, 2004
Small-size color electro-photographic apparatus
HITACHI LTD3 citations63
US6131000AOct 10, 2000
Electrophotographic printing apparatus using electric potential dividing development
HITACHI LTD2 citations63
HITACHI KOKI KK
3 patentsUS5832333ANov 3, 1998
Electrostatic recording apparatus and electrostatic recording method
HITACHI KOKI KK19 citations84
US5737008AApr 7, 1998
Electrophotographic image recording apparatus with photoreceptor exposure control
HITACHI KOKI KK7 citations74
US6271874B1Aug 7, 2001
Electrophotographic printer having an image memory, a horizontal scanning fringe correction exposure determining section, a vertical scanning fringe correction exposure determining section, and a switch
HITACHI KOKI KK3 citations63