Question about Riso RZ220 Duplicator
I don't think WD40 oil is the best solution.
I had to do such a procedure a few months ago. - I got a drum which was not in use some month. This is normally no problem with original ink. But some cheap plagiators have their own ink recipe.
I used a solvent for professional offset printers. It is the one to clean the ink rollers with. it was blue colored and I think it is so with most manufacturers. (I have seen some brands for this purpose and all were lighter or darker blue.)
By the way, it isn't so easy as it seems: The drum looks clean enough after some time. But to remove really all of the hard and gummy ink inside I had to take the drum apart. It took so much time and was so dirty so I will do this again only if I get paid accordingly.
Posted on May 01, 2011
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Posted on Jan 02, 2017
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