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From: "Carlos E.R." <robin_listas@es.invalid>
Newsgroups: sci.electronics.repair
Subject: Re: HP printer trouble
Date: Sun, 20 Apr 2025 01:38:50 +0200
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On 2025-04-19 23:29, Jeff Liebermann wrote:
> On Thu, 17 Apr 2025 22:11:20 +0100, Jeff Layman <Jeff@invalid.invalid>
> wrote:
> 
>> You could try that tonerbuzz tip of soaking the centre of a sheet of
>> paper with alcohol and running it a few times through the printer. No
>> disassembly required.
> 
> No.  Not alcohol.  What makes rubber useful is that it is ductile
> (easily stretched without breaking or lowering in material strength).
> If you "wash" rubber with alcohol, the oils that give rubber its
> ductile nature will evaporate, cause the rubber to dry out, and
> eventually make it hard as a rock.  Gasoline does the same thing to
> fuel lines but takes years for the rubber to harden.
> 
> If you want to use chemistry instead of just replacing the part, I
> suggest some made for the purpose:
> <https://www.google.com/search?q=printer%20rubber%20roller%20restorer&udm=2>
> For example:
> <https://www.precisionroller.com/category/rubber-rejuvenators.htm>
> I stuff I use is ancient and no longer sold.  It's 70% xylene (banned
> in California) and 30% wintergreen oil (methyl salicylate).  The
> xylene causes the pores in the rubber to enlarge.  The oil fills the
> pores.  The xylene evaporates at a moderately fast rate, leaving the
> oil behind inside the rubber roller.  As long as the rubber isn't
> damaged or polished smooth, the rejuvenated rubber should last a few
> years (not as long as new rubber).

If I search "Rubber Rejuvenators" in Amazon.es, I get products for the 
car instead.

[...]

Got one, but it is "not available". 
<https://www.amazon.es/dp/B0BL85QPZC>. It is the only one Google finds.

Got another, from the first link you posted, also not available: 
<https://www.amazon.es/dp/B001AYVSCO>


Searching for the translated term in google instead "limpiador rodillo 
de impresora"... finally, found something that does ship, although not 
from Amazon:

<https://www.amazon.es/Ewent-EW5617-Pulverizador-Limpieza-Transparente/dp/B07FYT8CF4>

Gosh, handling and shipping is more expensive than the product itself. 
I'll keep seeking.

-- 
Cheers, Carlos.