<s>
LightScribe	B-Application
is	O
an	O
optical	B-Device
disc	I-Device
recording	I-Device
technology	I-Device
that	O
was	O
created	O
by	O
the	O
Hewlett-Packard	O
Company	O
.	O
</s>
<s>
The	O
LightScribe	B-Application
method	O
uses	O
the	O
laser	O
in	O
a	O
way	O
similar	O
to	O
when	O
plain	O
data	O
are	O
written	O
to	O
the	O
disc	O
;	O
a	O
greyscale	O
image	O
of	O
the	O
label	O
is	O
etched	O
(	O
physically	O
burned	O
)	O
onto	O
the	O
upper	O
side	O
of	O
the	O
disc	O
using	O
a	O
laser	O
.	O
</s>
<s>
The	O
purpose	O
of	O
LightScribe	B-Application
is	O
to	O
allow	O
users	O
to	O
create	O
direct-to-disc	O
labels	O
(	O
as	O
opposed	O
to	O
stick-on	O
labels	O
)	O
,	O
using	O
their	O
optical	O
disc	O
writer	O
.	O
</s>
<s>
LightScribe	B-Application
was	O
conceived	O
by	O
Hewlett-Packard	O
engineer	O
Daryl	O
Anderson	O
,	O
and	O
the	O
coating	O
's	O
chemistry	O
was	O
developed	O
by	O
Dr.	O
Makarand	O
Gore	O
,	O
and	O
brought	O
to	O
market	O
through	O
the	O
joint	O
design	O
efforts	O
of	O
HP	O
's	O
imaging	O
and	O
optical	O
storage	O
divisions	O
,	O
where	O
it	O
was	O
first	O
introduced	O
in	O
January	O
2004	O
at	O
the	O
2004	O
Consumer	O
Electronics	O
Show	O
.	O
</s>
<s>
In	O
2005	O
,	O
LabelFlash	O
became	O
the	O
main	O
competitor	O
for	O
LightScribe	B-Application
.	O
</s>
<s>
No	O
LightScribe	B-Application
Blu-ray	O
discs	O
were	O
ever	O
developed	O
or	O
manufactured	O
,	O
though	O
Blu-ray	O
drives	O
with	O
LightScribe	B-Application
technology	O
(	O
supporting	O
the	O
older	O
formats	O
)	O
were	O
on	O
the	O
market	O
.	O
</s>
<s>
Companies	O
such	O
as	O
HP	O
,	O
Samsung	B-Application
,	O
LaCie	O
and	O
LiteOn	O
had	O
announced	O
that	O
they	O
were	O
phasing	O
out	O
LightScribe	B-Application
drives	O
by	O
June	O
2013	O
.	O
</s>
<s>
LG	O
was	O
one	O
of	O
the	O
last	O
companies	O
to	O
manufacture	O
LightScribe	B-Application
drives	O
but	O
ultimately	O
followed	O
suit	O
.	O
</s>
<s>
,	O
LightScribe.com	O
HP	O
's	O
official	O
LightScribe	B-Application
website	O
has	O
been	O
removed	O
.	O
</s>
<s>
,	O
HP	O
Desktop	O
PCs	O
Customer	O
Support	O
still	O
has	O
an	O
article	O
of	O
instructions	O
and	O
FAQ	O
about	O
LightScribe	B-Application
.	O
</s>
<s>
The	O
surface	O
of	O
a	O
LightScribe	B-Application
disc	O
is	O
coated	O
with	O
a	O
reactive	O
dye	O
that	O
changes	O
color	O
when	O
it	O
absorbs	O
780nm	O
infrared	O
laser	O
light	O
.	O
</s>
<s>
LightScribe	B-Application
labels	O
burn	O
in	O
concentric	O
circles	O
,	O
moving	O
outward	O
from	O
the	O
center	O
of	O
the	O
disc	O
.	O
</s>
<s>
LightScribe	B-Application
is	O
monochromatic	O
,	O
initially	O
a	O
grey	O
etch	O
on	O
a	O
gold-looking	O
surface	O
.	O
</s>
<s>
From	O
late	O
2006	O
,	O
LightScribe	B-Application
discs	O
are	O
also	O
available	O
in	O
various	O
surface	O
colors	O
,	O
under	O
the	O
v1.2	O
specification	O
.	O
</s>
<s>
It	O
is	O
not	O
possible	O
to	O
replace	O
a	O
LightScribe	B-Application
label	O
with	O
a	O
new	O
design	O
(	O
as	O
in	O
erase	O
the	O
surface	O
of	O
the	O
disc	O
)	O
,	O
but	O
it	O
is	O
possible	O
to	O
add	O
more	O
content	O
to	O
a	O
label	O
that	O
has	O
already	O
been	O
burned	O
.	O
</s>
<s>
The	O
center	O
of	O
every	O
LightScribe	B-Application
disc	O
has	O
a	O
unique	O
code	O
that	O
,	O
together	O
with	O
a	O
sensor	O
in	O
the	O
drive	O
,	O
allows	O
the	O
drive	O
to	O
know	O
the	O
precise	O
rotational	O
position	O
of	O
the	O
disc	O
.	O
</s>
<s>
Special	O
storage	O
precautions	O
are	O
necessary	O
to	O
prevent	O
LightScribe	B-Application
discs	O
from	O
fading	O
.	O
</s>
<s>
HP	O
's	O
LightScribe	B-Application
website	O
warns	O
users	O
to	O
"	O
keep	O
discs	O
away	O
from	O
extreme	O
heat	O
,	O
humidity	O
and	O
direct	O
sunlight	O
"	O
,	O
"	O
store	O
them	O
in	O
a	O
cool	O
,	O
dark	O
place	O
"	O
,	O
"	O
use	O
polypropylene	O
disc	O
sleeves	O
rather	O
than	O
PVC	O
sleeves	O
"	O
,	O
and	O
also	O
notes	O
that	O
"	O
residual	O
chemicals	O
on	O
your	O
fingers	O
could	O
cause	O
discoloration	O
of	O
the	O
label	O
image	O
"	O
.	O
</s>
<s>
Users	O
not	O
observing	O
these	O
precautions	O
have	O
reported	O
LightScribe	B-Application
discs	O
to	O
become	O
visibly	O
faded	O
within	O
two	O
months	O
in	O
the	O
worst	O
case	O
.	O
</s>
<s>
Since	O
many	O
disc	O
players	O
present	O
internal	O
temperatures	O
significantly	O
higher	O
than	O
room	O
temperature	O
,	O
LightScribe	B-Application
discs	O
should	O
also	O
not	O
be	O
left	O
in	O
disc	O
players	O
for	O
long	O
periods	O
of	O
time	O
.	O
</s>
<s>
LightScribe	B-Application
discs	O
may	O
form	O
a	O
visible	O
white	O
powder	O
coating	O
.	O
</s>
<s>
At	O
this	O
point	O
,	O
LightScribe	B-Application
support	O
has	O
not	O
explained	O
which	O
conditions	O
lead	O
to	O
this	O
reaction	O
,	O
nor	O
the	O
precautions	O
that	O
can	O
be	O
taken	O
to	O
avoid	O
it	O
.	O
</s>
<s>
Multiple	O
LightScribes	B-Application
of	O
the	O
same	O
image	O
increases	O
contrast	O
,	O
but	O
the	O
image	O
quality	O
decreases	O
with	O
successive	O
burns	O
.	O
</s>
<s>
A	O
LightScribe	B-Application
optical	O
drive	O
was	O
used	O
by	O
Maher	O
El-Kady	O
,	O
a	O
graduate	O
of	O
UCLA	O
in	O
2012	O
to	O
successfully	O
turn	O
a	O
specially	O
prepared	O
graphite	O
oxide	O
layer	O
coated	O
onto	O
a	O
DVD	O
into	O
graphene	O
.	O
</s>
<s>
El-Kady	O
and	O
Richard	O
Kaner	O
,	O
his	O
lab	O
professor	O
,	O
used	O
an	O
unmodified	O
LightScribe	B-Application
drive	O
.	O
</s>
<s>
Areas	O
of	O
the	O
coating	O
illuminated	O
by	O
the	O
LightScribe	B-Application
laser	O
were	O
turned	O
into	O
graphene	O
.	O
</s>
<s>
Another	O
use	O
is	O
to	O
prepare	O
a	O
PCB	O
layout	O
on	O
an	O
unburned	O
LightScribe	B-Application
CD-R	O
as	O
there	O
is	O
enough	O
contrast	O
to	O
form	O
a	O
weak	O
shadow	O
image	O
on	O
a	O
photosensitive	O
PCB	O
with	O
UV	O
light	O
.	O
</s>
