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rubber rejuv?

Discussion in 'Electronic Repair' started by David Lesher, Jan 22, 2006.

  1. David Lesher

    David Lesher Guest

    What's the preferred treatment for drive rollers that seem to be hit & miss?
    These are the pickup rollers in a Minolta office copy machine.

    I recall various cure-all's used for phonograph drive wheels in decades past,
    but not heard of anything recently.
     
  2. Jerry G.

    Jerry G. Guest

    As the rubber rollers age they harden and loose their adhesion.
    Replacement is the proper fix.

    You can try to clean them, but the fix will only be temporary.

    GC used to make some kind of a rubber grip chemical. It should not be
    used on surfaces that contact paper. its effect is only a temporary
    fix.

    Jerry G.

    --
     
  3. Teac had a rubber conditioner that worked great on pinch rollers. Never
    used it on a paper feed roller. I don't think they make it any more but it
    was mostly naptha IIRC.

    Leonard
     
  4. Dave D

    Dave D Guest

    I usually give the rollers a careful rub with fine sandpaper, then clean
    them with isopropyl alcohol. It's worked every time so far. You just need to
    rub them enough to break the shiny 'glaze' and get down to the good rubber.
    One has to be careful not to rub enough to create flat spots though, but if
    the glaze is that deep then chances are the roller is beyond help anyway.


    Dave
     
  5. none

    none Guest

    Black rubber rollers can be rejuventated for a while with any type of
    silicone oil.
    First clean the rollers with denatured alchohol and fine grade
    scotchbrite(usually white in color). Follow up with a synthetic sponge
    moist with alchohol to remove any loose rubber residue.( the foam tip
    cleaning swabs used for head cleaning vcr's will do or a bit of car
    wash sponge.)
    Let dry and apply silicone oil.( Armorall makes a rubber rejuvenator
    specifically for rubber/vinyl that works well. Used to get a product
    called "Rubber Love" from the auto parts store that worked very well
    also. Comes in a plastic squirt bottle and is a clear non-flammable
    silicone.)
    Run a few clean up sheets through the copier to get any excess off the
    rollers before running any actual work.
    This method has worked for me in the past, allowing a little more life
    from the pinch rollers.
    If you can't locate silicone oil from your local auto parts store try
    an RC hobby shop. They sell varying grades of pure silicone oil for
    the shocks on RC cars etc...
    I have several bottles of this stuff and it's worked like a charm on
    just about any rubber I've had to service.( gaskets, o-rings etc...)
     
  6. "Rubber Love" sounds like one of those movies behind the "over 18"
    door.

    Better than silicone oil is methyl salicate, "oil of wintergreen", I
    think. It's what print shops use by the gallon to rejuvenate their
    acres of rubber rollers. Smells just like Doublemint gum. You can
    get it in small quantities too.

    Don't get the stuff on your fingers though-- it doesnt wash off and
    your significant other will think you've been messing with the
    Doublemint twins.
     
  7. Good tip. Thanks. I have been wondering if there was anything out there
    that worked well since Teac stopped supplying their product.

    Leonard
     
  8. spudnuty

    spudnuty Guest

    Hmm like the oil of wintergreen idea. I have read on other forums and
    have used "Goof Off" for this. It has to be the old one not the new one
    based on citrus oil. I think it's the MEK that does it. Removes the
    glaze and rejuvenates the tackiness of the rollers.
    Richard
     
  9. You have to be careful with MEK. Liver cancer, you know. Use it
    sparingly, and outdoors.
     
  10. lakewood

    lakewood Guest

    Product is called Rubber Renew

    Available

    MG Chemicals Ontario Canada MFG

    1-800 201-8822

    Catalog number 408A 100 milliliters bottle


    Available in USA MCM Electronics and others.
     
  11. Dave D

    Dave D Guest

  12. My mistake! I was thinking of carbon tet and/or benzene, which are
    quite bad for you.

    MEK, I apologize.
     
  13. spudnuty

    spudnuty Guest

    No apology necessary. I'm always careful with all those solvents proven
    carcinogens or not. I grew up with carbon tet and benzene. It was
    everywhere, home dry-cleaning solvent, remember those carbon tet fire
    extinguisher bombs!? My daughter uses that non acetone nail polish
    remover in her enclosed room. I can barely breath when I go in there.
    So proven or not I'm not snorting any of that stuff.
    Richard
     
  14. Dave D

    Dave D Guest

    No need, it's always wise to be careful around chemicals like these. Just
    because there is currently no link with cancer doesn't mean there isn't one
    which may be discovered in the future.

    Benzene is really nasty stuff though, and a proven carcinogen.

    Dave
     
  15. David Lesher

    David Lesher Guest


    Hmmm, where can it be had in less than 55Gal quantity?
     
  16. You can get it by the GALLON at www.chemistrystore.com for $36. That
    should be a lifetime supply.

    Also available at your better electronic parts places, where you'll get
    1/64th of a gallon for 1/5th the gallon price.

    Synonyms for the stuff:

    Synonyms: Betula oil; Panalgesic; o-hydroxybenzoic acid methyl ester;
    betula; gaultheria oil; methyl o-hydroxybenzoate; oil of wintergreen;
    sweet birch oil; teaberry oil; wintergreen oil; analgit; exagien;
    flucarmit; 2-(methoxycarbonyl)phenol; anthrapole nd;
    2-carbomethoxyphenol; Methyl hydroxybenzoate; Linsal; Metsal Liniment
    !
     
  17. David

    David Guest


    Eucalyptus oil is what we use here in Australia. It brings warn rubber
    components up like new. Apply it with a cotton stick.
     
  18. David

    David Guest


    I use tyre black in a spray can that contains Benzene. I better apply it
    outside the garage from now on!
     
  19. Ancient_Hacker spake thus:
    Hmmm; I'm a printer, but I've never heard of using this stuff on rubber.
    There is something called "rubber rejuvenator" that we use on rubber
    parts (rollers and blankets) that definitely doesn't smell anything like
    mint gum: more like really nasty solvents, like acetone and MEK and
    other stuff mixed together. It really works, though: takes off glazed
    ink in a flash. Comes in gallon cans at graphic art supply places.
     
  20. I see that Caig has a product called CaiKleen RBR. According to the MSDS
    sheet it is 50% Naptha, 20% Terpene Hydrocarbon, & 30% Chlorinated Parafin.

    The Naptha and the Parafin were components of the Teac solution that we used
    for years and found it to be very good. I am not sure what the Terpene
    does, but I assume it is a cleaner.

    MCM has it in their latest flyer.

    Leonard



     
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