No, nothing to do with cooking the books... Most analogue tape made between the 70s and mid 90s suffers from 'sticky tape syndrome' in storage, a chemical breakdown of the binder or 'glue' that holds the essential magnetic oxide onto the backing, thought to be caused by moisture absorption. This results in the shedding of a waxy black 'gunge' making the tape impossible to play safely. If playback is attempted the 'gunge' rapidly builds up on the heads and guides and clumps together, sticking to the tape surface and damaging the edges in particular. In extreme cases the tape slows to a stop with a squealing noise and can be permanently stretched as the motors strain to keep things moving. Although the clumps can usually be removed (individually, by hand!), patches of oxide containing your music are often pulled off in play or fast wind causing irreparable loss - holes in the recording known as 'dropouts'. Fortunately there is a cure - a precisely controlled heat treatment process lasting anything up to 4 days. This dries out the stickyness and allows perfect playback for a short period, usually up to a month, allowing the tape to be transferred to a digital format. Correct baking produces no adverse effects, however, the temperature and timing are critical and a dry environment essential - we're definitely NOT talking gas mark 3 here. To bake tapes the studio now has a fan-assisted biotech incubator which controls the treatment temperature to within half a degree, and features an over-temp cut-out for 100% safety. Rates: just £10 for a single reel, discounts available for large batches. Please note that not all tape needs baking, and some very early types can actually be damaged by the binder 'drying out' completely, so it is essential that the problem is correctly identified - please call for advice. |