Since data recorded on a CD-R follows a single, spiral track from the center to the perimeter of the disc, a finer track pitch
allows more data to be written on the disc.
The reduction in track pitch
required a media formulation capable of producing greater output signal.
In linear drives the basic recording technique is similar between Travan, SLR, SC50, VS, DLT, and LTO drives (there are variations in recording density/encoding, track pitch
, and number of parallel channels).
Amplitude Data Track Form Wobbled groove + Phase modulated Land pre-pit wobbled groove Track Pitch
What's interesting to me about the ML breakthrough is that the extra storage capacity comes not from pushing the recordable real estate further to the edges, nor from tightening the track pitch
to boost the areal density.
6 Recording Layer Azo Dye Azo Dye Reflectivity 45-85% 45-85% Track Pitch
Consideration was given to track density, track pitch
, available media area, recording format (helical scan vs.
95GB media, the track pitch
or the distance from the center of one part of the spiral information "track" to an adjacent part of the track is 0.