Here are our notes on lacquer cleaning:
These notes also apply to adhered debris like you encountered. We have
cleaned thousands of lacquer discs over the years, and much of that
experience is captured in the above notes.
Therešs a balance that needs to be managed between mechanical scrubbing
and liquid contact time. You really need to minimize liquid contact time
because the lacquer will start swelling and can bubble and delaminate. A
few minutes of liquid contact is okay, but 10-15 minutes of continuous
liquid contact is on the high side. Use of a machine like a Keith Monks
RCM is important with lacquers since this machines removes the liquid
rapidly after cleaning. Also, the quantity of liquid on the disc is not
an issue. In fact, more liquid is often better for maximum chemical
cleaning, except if the disc has a fiber base (the substrate can swell),
or if the laminate is cracked (the liquid can easily get under the
Youšll read that we like the Disc Doctor cleaning solution, which we
modify slightly for palmitic acid removal.
We also recommend the Disc Doctor cleaning brushes. These are an
important tool for mechanically (and gently) scrubbing the disc surface
and minimizing the liquid contact time. We prefer the Disc Doctor cleaning
brushes over the built-in brushes on the Keith Monks RCM. Youšll need at
least two brushes - one for cleaning, a second for rinsing.
Feel free to contact me if you have any questions.
The Audio Archive, Inc.
1325 Howard Ave, #906
Burlingame, CA 94010
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Disc and Tape Audio Transfer Services and Preservation Consulting
On 8/7/14, 5:06 PM, "Jeanette Berard" <[log in to unmask]> wrote:
>I have come across an issue I have not previously seen - black lacquer
>discs with damage related to termites. The discs have debris from
>consumption of the paper sleeves adhered to ( or perhaps embedded in?)
>Has anyone out there ever encountered this issue? Is it possible to
>clean these? I have not yet made any tests, right now I'm just gathering
>This is a small collection recently received, and no, there aren't any
>Jeanette Berard, MLS, CA
>Special Collections Librarian
>Thousand Oaks Library System
>(805) 449-2660 xt7328
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