Inventor
OBATA MASAHITO
JP8 patents
Patents
8 patentsUS5363210ANov 8, 1994
Apparatus outputting quantized image data, selecting from filters with different error spreading effects
RICOH KK27 citations91
US6172700B1Jan 9, 2001
Writing device for an image forming apparatus
RICOH KK24 citations90
US5408339AApr 18, 1995
Image area discriminating device
RICOH KK7 citations73
US5351138ASep 27, 1994
Image area discriminating device
RICOH KK11 citations73
US6233000B1May 15, 2001
Image forming system having an improved imaging data generator
RICOH KK8 citations71
US5477341ADec 19, 1995
Digital image forming apparatus
RICOH KK2 citations60
US7110138B2Sep 19, 2006
Apparatus, method and computer program product for performing image formation
RICOH KK0 citations50
US5623301AApr 22, 1997
Digital copier with memory occupancy calculation
RICOH KK1 citations45