Inventor
SHIMOOHSAKO MASATAKA
JP4 patents
Patents
4 patentsUS6718145B2Apr 6, 2004
Image forming apparatus capable of determining type of recording sheet to prevent sheet jam
RICOH KK43 citations90
US6996349B2Feb 7, 2006
Image forming apparatus capable of determining type of recording sheet to prevent sheet jam
RICOH KK12 citations81
US7675051B2Mar 9, 2010
Sheet detector mechanism including sheet detector further including photoreceptors, and image forming apparatus including the same
RICOH KK5 citations59
US7744080B2Jun 29, 2010
Sheet feed device and image forming apparatus
RICOH KK6 citations58