Thank you all for the ideas. Most seem to think that
looonnnnnnnnnnnnnnnnnnggggg baking time is required and so the batch
that is in the oven now will stay there till tomorrow night, making it
48 hours. I have tried taping them straight out of the oven and after
different cooling periods but the problem remains. I should mention that
not all machines show this problem. Most of the tapes play well, but the
Otari mx-50 and the Revox a-700 do not like the backing. The oven is a
Israeli design that can hold 320 tapes with comfort. Temperature is
about 55-60 degrees C. The only problem now is that if this is the
solution I have some timing problems since we run 1200-1400 tapes a
week. 320 tapes for 48 hours cuts me short. I can't add vacuum to this
oven but I could include a small exhaust fan that will remove moisture.
Shai

On 22/03/2011 22:33, Mark Welch wrote:
> Shai,
>
> I have had way to much experience with this! You can try a
> non-invasive lubrication as the tape is running to alleviate some of
> the backing shed. Its messy and you will have to build it but it will
> work.
>
> Also, have you attempted immediate transfer of the materials? Baking
> lasts for a short time. Try experimenting with the tapes out of the
> oven at various times. This might allow for a reduced build-up on the
> transport.
>
> Best,
>
> Mark Welch
>
>
> --- On *Tue, 3/22/11, Shai Drori /<[log in to unmask]>/* wrote:
>
>
> From: Shai Drori <[log in to unmask]>
> Subject: [AMIA-L] Ampex 478
> To: [log in to unmask]
> Date: Tuesday, March 22, 2011, 2:53 AM
>
> Please forgive the cross posting
> I am transferring a few thousand tapes recorded on Ampex 478 from
> 1998. Although baking has cured the sticky shed problem (after 16
> hours though), I am facing a problem of the black backing guncking
> up the transport. It is a big menace. Does anyone have experience
> with this problem? Is there a machine out there like the RTI
> Tapechek line that cleans the tape prior o playing? We are going
> through tons of cleaning materials and losing many hours on it.
> Shai Drori
>
>