RISO

The Black-HD-ink-GR3750-compatibility-thing

I got really confused about that whole black-HD-ink-GR-3770-3750-compatibility thing and i wanted to be sure about my drums working in both of my machines as they should, so i went for a longer shot.

How come?

Rubber band

This a common problem on RISO RP3100, the rubber band that allows the master to be removed breaks because of the deterioration of the rubber. 
I found an old explanation from PrntNow

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