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2. Tape head cleaner - Wikipedia

   en.wikipedia.org/wiki/Tape_head_cleaner

   Tape head cleaner. A tape head cleaner is a substance or device used for cleaning the record and playback heads of a magnetic tape drive found in video or audio tape machines such as cassette players and VCRs. [1] These machines require regular maintenance to perform properly.

3. Disc rot - Wikipedia

   en.wikipedia.org/wiki/Disc_rot

   Disc rot. Disc rot is the tendency of CD, DVD, or other optical discs to become unreadable because of chemical deterioration. The causes include oxidation of the reflective layer, reactions with contaminants, ultra-violet light damage, and de-bonding of the adhesive used to adhere the layers of the disc together.

4. Brasso - Wikipedia

   en.wikipedia.org/wiki/Brasso

   Brasso has also been used to polish out scratches in plastics: It has been used to polish CDs, DVDs, screens, and pools to repair scratches. It is a mild solvent and an extremely fine abrasive, so when applied to the reflective surface of the disc and rubbed radially (in straight lines between the edge and centre), it can smooth scratches and reduce their effect.

5. Optical media preservation - Wikipedia

   en.wikipedia.org/wiki/Optical_Media_Preservation

   Optical disc types. CD-ROMs / DVD-ROMs (read-only-memory) are commercial grade discs and use a metallic data layer created using a molding machine that stamps pits (depressions) and lands (flat surfaces) into a polycarbonate substrate base. The metal layer is then applied to the base, creating the data layer. While aluminium is most frequently ...

6. Conservation and restoration of vinyl discs - Wikipedia

   en.wikipedia.org/wiki/Conservation_and...

   The conservation and restoration of vinyl discs refers to the preventive measures taken to defend against damage and slow degradation, and to maintain fidelity of singles, 12" singles, EP’s, and LP’s in 45 or 33⅓ rpm 10" disc recordings. Vinyl LP preservation is generally considered separate from conservation, which refers to the repair ...

7. DVD-R DL - Wikipedia

   en.wikipedia.org/wiki/DVD-R_DL

   DVD-R DL (DL stands for Dual Layer [1]), also called DVD-R9, is a derivative of the DVD-R format standard. DVD-R DL discs hold 8.5 GB by utilizing two recordable dye layers, each capable of storing a little less than the 4.7 gigabyte (GB) of a single layer disc, almost doubling the total disc capacity.