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.

--
A host is a host from coast to
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433

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.

--

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

"David Lesher" wrote in message
...
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.

--
A host is a host from coast to
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433

"David Lesher" wrote in message
...
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.


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

On Sun, 22 Jan 2006 19:53:55 +0000 (UTC), David Lesher
wrote:

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.

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...)

"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.

Good tip. Thanks. I have been wondering if there was anything out there
that worked well since Teac stopped supplying their product.

Leonard

"Ancient_Hacker" wrote in message
oups.com...
"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.

Leonard Caillouet wrote:
Good tip. Thanks. I have been wondering if there was anything out there
that worked well since Teac stopped supplying their product.
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

You have to be careful with MEK. Liver cancer, you know. Use it
sparingly, and outdoors.

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.

"Ancient_Hacker" wrote in message
ups.com...
You have to be careful with MEK. Liver cancer, you know. Use it
sparingly, and outdoors.


Do you have a link for that? This website claims MEK is not known to be a
cancer hazard. It is, however, an irritant.

http://www.ccohs.ca/oshanswers/chemi...ealth_mek.html

Dave

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

MEK, I apologize.

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

MEK, I apologize.
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

"Ancient_Hacker" wrote in message
oups.com...
My mistake! I was thinking of carbon tet and/or benzene, which are
quite bad for you.

MEK, I apologize.


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

"Ancient_Hacker" writes:

"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.


Hmmm, where can it be had in less than 55Gal quantity?

--
A host is a host from coast to
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433

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
!

"Ancient_Hacker" wrote in message
ups.com...
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


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

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.


I use tyre black in a spray can that contains Benzene. I better apply it
outside the garage from now on!

Ancient_Hacker spake thus:

"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.

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.


--
The only reason corrupt Republicans rule the roost in Washington
is because the corrupt Democrats can't muster any viable opposition.

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



"David Lesher" wrote in message
...
"Ancient_Hacker" writes:

"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.


Hmmm, where can it be had in less than 55Gal quantity?

--
A host is a host from coast to
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433

David Nebenzahl wrote:
Ancient_Hacker spake thus:

"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.


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.


I have worked on Printer repairs for more years than I care to count,
and there are 3 treatments we use in Australia.

The best is Hurst #7 roller cleaner, used widely in the printing
business, but we get it in 25 litre cans, lasts years for a team of techs.

http://www.hurst.com.au/

This is a local supplier, but it is obviously available where Printing
machines are used. When we first got it, it was from a local Printing
shop, when it was proved, went to the source.

Next is CO Cleaner, comes in spray cans, and is very good at deglazing
rollers, doesn't smell like #7, is very volatile, you must be quick.

Last is Isopropyl Alcohol, Methylated Spirits will do, the least
volatile, and least effective, but does work to some extent.

Hurst #7 comes with a warning, is a cancer suspect, should not be used
in a closed room, but is very effective. CO Cleaner will be readily
available worldwide, and is much less of a risk.

If a pickup roller is worn, it will be seen after cleaning, and must be
replaced, or constant cleaning will be necessary.

They're two different things. First you have your "rubber cleaner",
which as you say is all nasty solvents, to get off the greasy ink and
grime. That workd just swell.

But in getting out the grease, the solvents also leach out the
"plasticisers" out of the rubber. They're the additives that make the
rubber soft and pliable. You lose those and the rubber gets too hard.


The oil of xxx things are "rubber rejuvenators".... a poor man's
plasticizer. These soften up the rubber back to its original
condition.

Both have their uses. After you use the first ones a lot, you probably
will need the second ones.

"Ancient_Hacker" bravely wrote to "All" (28 Jan 06 18:03:07)
--- on the heady topic of " rubber rejuv?"

An From: "Ancient_Hacker"
An Xref: core-easynews sci.electronics.repair:356783

An They're two different things. First you have your "rubber cleaner",
An which as you say is all nasty solvents, to get off the greasy ink and
An grime. That workd just swell.

An But in getting out the grease, the solvents also leach out the
An "plasticisers" out of the rubber. They're the additives that make the
An rubber soft and pliable. You lose those and the rubber gets too hard.


An The oil of xxx things are "rubber rejuvenators".... a poor man's
An plasticizer. These soften up the rubber back to its original
An condition.

An Both have their uses. After you use the first ones a lot, you
An probably will need the second ones.


Just a reminder than some oils will soften and make rubber expand.
Many car owners who have their cars anti-corrosion protected for
winter by hot oil spraying the frame and door interiors, find their
engine hood rubber seal band softening and falling off. (Besides
dripping the sprayed oil on the road for a couple of weeks).

A*s*i*m*o*v

.... "Bother!" said Pooh, as he saw the sparks and smelled the smoke.