1939723 / RICOH:400596 / RIC400596 / RICOH 400596 / FO:Ric400596:C / R-3800C-FU/2 / 400596;RIC / RIC400596 / 400596(FUSER U) / 000000000400596 / RIT3800C / RIC400596 / RIC400596 / FTAP3800K-C / 379719 / RIT3800C / 400596 4810344 / RIC400596 / RH400596-O / 0400596 / R-3800C-FU / 4005964810344