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    [Error Code] Re: Riso mz790

    Haha, RISO is laughter in Portuguese too. Always one of the funnier points of working with Brazillian printers.
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    [Jamming] Re: RZ990 feed / timing (?) issues

    Oh, this is a good lead! I know that replacing that gear is on the preventative maintenance schedule, and my machine is pushing about 3Million copies... I should probably start replacing a lot of the...
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    Re: driver SC7700

    There is something here - the site is in Russian, but most of the drivers are in English i believe:

    Ризограф RISO - неофициальный сайт RISO - Все драйвера к ризографам и интерфейсам RISO
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    [Jamming] Re: RZ990 feed / timing (?) issues

    Hi, Iowa - thanks for the reply. Definitely not a waste of time, I really appreciate it!

    In that second picture, they are actually aligned - the one mark on the left gear is exactly in the center...
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    [Jamming] Re: RZ990 feed / timing (?) issues

    I am still fighting with this machine. After a deeper dive, I found that some of the teeth on the print positioning intermediate gear were broken. However, even after replacing it I am still getting...
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    [Jamming] RZ990 feed / timing (?) issues

    Hello all,

    I have a new-to-me RZ990 (just under 3million impressions) that is having some serious feed issues. I have been trying to solve this issue for weeks and I am finally at my wit's end.
    ...
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    MZ790 Image Warping on Drum

    Hello all,
    I am experiencing a maddening registration issue with the second drum in my MZ. The image seems to be warped as it wraps around the drum, meaning that I can get usually get 3 or 4 (if i...
  8. Re: rz220 black drum not inking to the edge of the master

    I usually use citrus-solvent to clean drums - really cuts through the ink.

    If it physically cleaning it isn't effecting it (and you sure its not super dried out / clogged), then I would look at...
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    Re: RP3700 Master Skew

    I think I may have found my own hail mary - sort of. I measured the hight difference of each side of the Pressure Roller holder, pressing them both as far down as they could go and one side was 1mm...
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    Re: RP3700 Master Skew

    I actually found another OEM roll from another batch (this one from 2013), and it's doing the exact same thing - so I don't think that bad masters are the problem after all. It was definitely a good...
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    Re: RP3700 Master Skew

    Thank for the idea, Iowa - I hadn't even thought that the master material itself could be an issue. It's OEM RP riso masters, manufactured in 2014 according to the box.

    Here is another...
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    RP3700 Master Skew

    I am fighting a maddening issue with my RP3700: excessive master skew.

    Masters go on perfectly straight, measuring 26mm from the edge of the near side of the master to the metal frame on both the...
  13. Durability of z-type drum bodies / screens?

    In 5 years very little issue with dents in my RP drums (1 that I can think of), but in a little over 2 years with an MZ i have picked up image-ruining dents in about half of my 10 z-type drums. This...
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    Re: Change color of a RZ 990U drum

    This should help:

    How-to: Convert Z-type Color Drums | stencil.wiki
  15. Getting an PS7R-5000 to talk to a MZ790

    Hello all!

    I recently acquired a PS7R-5000 RIP for my MZ790. After figuring out how to reset the device and get it all set up so that my network can talk it, I am stumbling on what I thought would...
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    [Misc] Re: Red Brilliant, Bright Red and Red

    Red Brilliant might refer to the french on the label for Bright Red (Rouge Brillant).

    Bright Red/Rouge Brillant is definitely different from Red, which is warmer and richer.

    That all said,...
  17. Re: MZ790 Horizontal print position / second drum print school

    Sorry I never posted images - in the end, I think that my problem stemmed from the master making unit being off by a tooth. Once I realigned the unit, I was able to work within the margins of the...
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    Re: MZ replace ink cartridge problem

    is it there anyway to reset the ink or otherwise get around it? I am having the same problem (also on a yellow drum) and it is causing the same problem - with two new tubes (13/11 so just a little...
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    [Misc] Re: Drum Screen Life Span?

    Some great success!

    I took it apart again, and while the bead seemed fine, I widened the gap by a notch just to be safe (though, it is only 2 notches from the end so i am not sure if "safe" is...
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    Re: Black drum into colour drum

    wouldn't you have to modify the tube? as jermyth said, i think the nozzle diameter is larger on the black drums - but also the "fin" is different?

    I mean, I have heard of it being done, but it...
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    [Misc] Re: Drum Screen Life Span?

    This is on an RP3700
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    [Misc] Re: Drum Screen Life Span?

    I thought it might just be slow to ink at first, but ran easily 1000 copies at 5 density.

    I'll have to open it back up to double check the bead next...
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    [Misc] Re: Drum Screen Life Span?

    The ink is brand new - made this year (a special order of Orchid)

    As part of my drum body replacement, I also soaked the screen in solvent to see if i could free up any issues. There is some...
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    [Misc] Drum Screen Life Span?

    Hello All,
    I am curious about the lifespan of a drum screen. I have a few drums (some with about 200k impressions on them) that give a very mottled impression no matter how much I clean / soak them...
  25. Re: MZ790 Horizontal print position / second drum print school

    Hi Iowatech! I would gladly take a picture - what do you want to see?

    Thanks!
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