4 X1000ml BK C M Y High Quality Refillable Pigment Ink for Riso ComColors HC5500 3050 7050 9050 3150 7150 9150 Printer Printing|Ink Refill Kits| - AliExpress
Riso HC5500 Manuals | ManualsLib
RISO Kagaku Corp Overseas Technical Department - ppt video online download
Riso HC5500 High-Speed Color Printer | Boggs Equipment
Lot #45: Riso HC5500 High-Speed Color Printer - WireBids