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Rp 3100 Drum Problem

I have a Risograph RP3100 that we have not used for a couple of months. When we tried to use it there is what I would call a dry spot on the drum and the text in that area does not print. I tried pulling the master back and rubbing the area with alcohol but that did not help. Any ideas????

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  • Anonymous Jan 14, 2009

    SAME PROBLEM ANY ANSWERS

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You can clean it, thats a good idea but,,(and this is messy) roll back the master.. take out the ink cartridge, use a rod to squeeze some ink onto the area, and smooth it out into the screen with a plastic scraper.. Lay the master back over. Keep scrap paper around and print a big black square and run a couple hundred sheets through.. This will work. Messy but will work. If you don't want to manually put some ink on the area.. Print a large black square and run a couple hundred sheets.. see what that does.

Posted on Aug 10, 2009

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Hi
WD40 spray and rub in the area with finger where you don't get image works great !! Thank you Dermot for your help.

Posted on Oct 03, 2016

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After cleaning with  alcohol leave drum for a couple of days in dark place nd try again.

Posted on Sep 10, 2008

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SOURCE: Risograph Drum

Hi,
Try run a hundred copies at slow speed and full density/ pressure.
If that fails get a can of WD40 and spray it under the master, then rub the area with your finger. this will desolve the dryed ink on the drum surface.
Dermot

Posted on Mar 08, 2009

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Hello I have to run a risograph tr1510 that have not been used for a couple of years or more. The drum are completely dry. I read this post: http://www.fixya.com/support/t4515933-risograph_rp3700_not...


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.

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Hi,
Try run a hundred copies at slow speed and full density/ pressure.
If that fails get a can of WD40 and spray it under the master, then rub the area with your finger. this will desolve the dryed ink on the drum surface.
Dermot

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