Riso GR1750

[bcp]

I have just bought a Riso GR1750 and would like to know about consumables for this model. My machine uses a B4 size drum (master size 270mm) Can I use any size GR drum in this unit or can I only use a B4 size drum. Can any 270mm x 100mtrs master roll be used or only the part no. that Riso sell for this model. I have seen so many different part no. available in the 227mm, 270mm and 320mm range, surely Riso don't make so many different masters or are all the same size masters the same but with different part nos. Any info would be greatky appreciated. thanks

[risografist]

You can use only
B4 Drum/250 x 353 mm image area
or
A4 Drum/198 x 286 mm image area.