<s>
A	O
printing	B-Protocol
protocol	I-Protocol
is	O
a	O
protocol	O
for	O
communication	O
between	O
client	B-Protocol
devices	O
(	O
computers	O
,	O
mobile	O
phones	O
,	O
tablets	O
,	O
etc	O
.	O
)	O
</s>
<s>
It	O
allows	O
clients	O
to	O
submit	O
one	O
or	O
more	O
print	B-General_Concept
jobs	I-General_Concept
to	O
the	O
printer	O
or	O
print	O
server	O
,	O
and	O
perform	O
tasks	O
such	O
as	O
querying	O
the	O
status	O
of	O
a	O
printer	O
,	O
obtaining	O
the	O
status	O
of	O
print	B-General_Concept
jobs	I-General_Concept
,	O
or	O
cancelling	O
individual	O
print	B-General_Concept
jobs	I-General_Concept
.	O
</s>
<s>
The	O
Line	O
Printer	O
Daemon	O
protocol/Line	O
Printer	O
Remote	O
protocol	O
(	O
or	O
LPD	O
,	O
LPR	O
)	O
is	O
a	O
network	O
protocol	O
for	O
submitting	O
print	B-General_Concept
jobs	I-General_Concept
to	O
a	O
remote	O
printer	O
.	O
</s>
<s>
The	O
original	O
implementation	O
of	O
LPD	O
was	O
in	O
the	O
Berkeley	B-Operating_System
printing	I-Operating_System
system	I-Operating_System
in	O
the	O
2.10	O
BSD	B-Operating_System
UNIX	I-Operating_System
operating	O
system	O
in	O
1988	O
;	O
the	O
LPRng	O
project	O
also	O
supports	O
that	O
protocol	O
.	O
</s>
<s>
The	O
Internet	B-Protocol
Printing	I-Protocol
Protocol	I-Protocol
(	O
IPP	O
)	O
is	O
an	O
Internet	B-Protocol
protocol	I-Protocol
for	O
communication	O
between	O
client	B-Protocol
devices	O
(	O
computers	O
,	O
mobile	O
phones	O
,	O
tablets	O
,	O
etc	O
.	O
)	O
</s>
<s>
Unlike	O
other	O
printing	B-Protocol
protocols	I-Protocol
,	O
IPP	O
also	O
supports	O
access	O
control	O
,	O
authentication	O
,	O
and	O
encryption	O
,	O
making	O
it	O
a	O
much	O
more	O
capable	O
and	O
secure	O
printing	O
mechanism	O
than	O
older	O
ones	O
.	O
</s>
<s>
It	O
is	O
the	O
default	O
protocol	O
in	O
Android	B-Application
and	O
iOS	B-Application
.	O
</s>
<s>
Telnet	B-Protocol
is	O
based	O
on	O
simply	O
transferring	O
data	O
safely	O
to/from	O
TCP	O
ports	O
that	O
are	O
now	O
being	O
used	O
for	O
printing	O
purposes	O
.	O
</s>
<s>
This	O
approach	O
is	O
sometimes	O
called	O
raw	O
TCP/IP	B-Protocol
,	O
Stream	O
,	O
or	O
direct	O
sockets	O
printing	O
.	O
</s>
<s>
Server	B-Operating_System
Message	I-Operating_System
Block	I-Operating_System
(	O
SMB	O
)	O
is	O
an	O
application-layer	O
network	O
protocol	O
for	O
file	O
and	O
printer	O
sharing	O
originally	O
developed	O
by	O
IBM	O
in	O
the	O
mid-80s	O
.	O
</s>
<s>
This	O
kind	O
of	O
protocol	O
is	O
based	O
on	O
one	O
kind	O
of	O
printing	B-Protocol
protocols	I-Protocol
plus	O
Zero-configuration	B-Application
networking	I-Application
(	O
zeroconf	B-Application
)	O
mechanisms	O
.	O
</s>
<s>
AirPrint	B-Operating_System
is	O
a	O
feature	O
in	O
Apple	O
Inc.	O
'	O
s	O
macOS	B-Application
and	O
iOS	B-Application
operating	O
systems	O
for	O
printing	O
via	O
a	O
wireless	B-Architecture
LAN	I-Architecture
(	O
Wi-Fi	O
)	O
,	O
either	O
directly	O
to	O
AirPrint-compatible	O
printers	O
,	O
or	O
to	O
non-compatible	O
shared	O
printers	O
by	O
way	O
of	O
a	O
computer	O
running	O
Microsoft	B-Application
Windows	I-Application
,	O
Linux	B-Application
,	O
or	O
macOS	B-Application
.	O
</s>
<s>
AirPrint	B-Operating_System
is	O
based	O
on	O
mDNS	B-Protocol
(	O
Bonjour	B-Application
,	O
more	O
specifically	O
)	O
and	O
Internet	B-Protocol
Printing	I-Protocol
Protocol	I-Protocol
(	O
IPP	O
)	O
.	O
</s>
<s>
It	O
was	O
originally	O
intended	O
for	O
iOS	B-Application
devices	O
and	O
connected	O
via	O
a	O
Wi-Fi	O
network	O
only	O
,	O
and	O
thus	O
required	O
a	O
Wi-Fi	O
access	O
point	O
.	O
</s>
<s>
However	O
,	O
with	O
the	O
introduction	O
of	O
AirPrint	B-Operating_System
to	O
the	O
macOS	B-Application
desktop	O
platform	O
in	O
2012	O
,	O
Macs	O
connected	O
to	O
the	O
network	O
via	O
ethernet	O
connection	O
could	O
also	O
print	O
using	O
the	O
AirPrint	B-Operating_System
protocol	O
—	O
not	O
just	O
those	O
connected	O
via	O
Wi-Fi	O
.	O
</s>
<s>
Mopria	O
Alliance	O
provides	O
a	O
protocol	O
which	O
is	O
adopted	O
by	O
Android	B-Application
and	O
available	O
in	O
Windows	B-Operating_System
10	I-Operating_System
.	O
</s>
<s>
It	O
uses	O
mDNS	B-Protocol
for	O
service	O
discovery	O
and	O
Internet	B-Protocol
Printing	I-Protocol
Protocol	I-Protocol
(	O
IPP	O
)	O
for	O
printing	O
,	O
just	O
like	O
AirPrint	B-Operating_System
.	O
</s>
<s>
Windows	O
devices	O
use	O
Web	B-Protocol
Services	I-Protocol
for	I-Protocol
Devices	I-Protocol
(	O
WSD	O
)	O
for	O
service	O
discovery	O
and	O
Line	B-Protocol
Printer	I-Protocol
Daemon	I-Protocol
protocol	I-Protocol
(	O
LPR	O
)	O
or	O
JetDirect	O
(	O
RAW	O
)	O
for	O
printing	O
.	O
</s>
<s>
Windows	B-Operating_System
10	I-Operating_System
also	O
supports	O
Mopria	O
Alliance	O
's	O
way	O
.	O
</s>
<s>
The	O
computer	O
and	O
the	O
printer	O
usually	O
should	O
locate	O
in	O
the	O
same	O
local	B-General_Concept
area	I-General_Concept
network	I-General_Concept
(	O
LAN	B-General_Concept
)	O
when	O
use	O
all	O
of	O
above	O
protocols	O
.	O
</s>
<s>
Internet	B-Protocol
printing	I-Protocol
protocols	I-Protocol
is	O
designed	O
for	O
Internet	O
printing	O
.	O
</s>
