Editing Print-through (section)

==Explanation==
Print-through is a category of noise caused by contact transfer of signal patterns from one layer of tape to another after it is wound onto a reel.

Print-through can take two forms:

# thermo-remanent magnetization induced by temperature, and 
# anhysteretic magnetization caused by an external magnetic field.

The former is unstable over time and can be easily erased by rewinding a tape and letting it sit so that the patterns formed by the contact of upper and lower layers begin to erase each other and form new patterns with the repositioning of upper/lower layers after rewinding. This type of contact printing begins immediately after a recording and increases over time at a rate dependent on the temperature of the storage conditions. Depending on tape formulation and type, a maximum level will be reached after a certain length of time, if it is not further disturbed physically or magnetically.