Inventor
HIRONO MOTOHISA
JP4 patents
Patents
4 patentsUS7136605B2Nov 14, 2006
Image forming apparatus, method of evaluating noise, and methods of manufacturing and modifying image forming apparatus
RICOH KK24 citations90
US6697584B2Feb 24, 2004
Image formation apparatus and tone quality improving method of image formation apparatus
RICOH KK35 citations90
US6876828B2Apr 5, 2005
Image formation apparatus and tone quality improving method of image formation apparatus
RICOH KK4 citations60
US6862417B2Mar 1, 2005
Image formation apparatus, sound quality evaluation method, method of manufacturing image formation apparatus, and method of remodeling image formation apparatus
RICOH KK5 citations60