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High-Performance Metal Magnetic Particles and
an Ultra-Thin Magnetic Layer Ensure a Low Error Rate
A
TOMM-II technology uses magnetic particles that are approximately half the size of the
particles used in first-generation ATOMM technology. The new particles also have an energy
level that is approximately 70% higher, with retentivity of 370 mT and coercivity of 183
kA/m. In addition, the extreme thinness of the magnetic layer reduces self-demagnetization
loss, and ensures high output and a high C/N ratio in the short wavelength range. DP Series
tapes also feature a super-smooth magnetic layer that reduces spacing loss, and specially
formulated lubricants that improve tape travel over heads and guides. The result is reduced
micro-dropouts and an exceptionally low error rate. Despite having a width of only 6.35mm,
DP Series tapes can record massive amounts of digital data, and provide the high image
quality that broadcasters demand.
Hysterisis Curves
Magnetic
Field (kA/m)
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TOMM-II
Single-Layer
T
ape
A
TOMM
Magnetic
Flux Density (mT)
Superior Transport Stability, Durability and
Storage Characteristics in Demanding Environments
ATOMM-II technology allows the non-magnetic lower layer to be impregnated with
lubricants that control tape and head wear, ensuring that the tape surface is optimally
lubricated even during repeated playback and rewind operations. Together with a high-
molecular binder material that improves magnetic layer durability, the lubricants enable the
tape to withstand extended still/standby and high-speed shuttle operation, as well as
adverse ENG/EFP field conditions, yet still offer superior transport stability and durability with
minimal head clogging. To ensure superior long-term storage characteristics, metal
magnetic particles are uniformly coated with a special oxidation-resistant material, and tape
shrinkage-preventing technologies are used to prevent the track pattern deformation that
can cause tracking errors.
Upper Layer
Lower Layer
Lubricant
Base Film
Easy-to-Handle, High-Precision,
High-Rigidity Cassette Shells
Tightly sealed high-precision, high-rigidity cassette shells prevent tape deformation and
damage, promote stable tape transport, and shut out dust and dirt to help ensure a low
error rate. They also feature large clear windows that allow the amount of remaining tape to
be confirmed at a glance, and colored lids and transparent hard cases that make it easy to
differentiate DP121 and DP1001 cassettes from one other.
Changes in RF Output Level After Repeated Playbacks
Changes in Output Level After Still Playbacks
–3
–2
–1
0
100 200 300
f=20.9 MHz
RF Output Level (dB)
Number of Playbacks
–3
–2
–1
0
RF Output Level (dB)
100 200 300
21˚C 50%
f=20.9 MHz
Still Time (min.)
The Structure of
Lubricant