IBM Proprinter

Code
ESCK
4-16
Descri
p
tion
480
Bit-Image
Graphics
Format:
ESC
K;n
1
;n
2
;v
1
;v
2
; •••
V4so
This
sequence
specifies
bit
-
image
data
at
the
normal
print
speed
and
spacing.
Spacing
is
60
dots
per
inch
horizontally
and
72
dots
per
inch
vertically.
The
printer
can
print
480
dot
columns
on
an
8-inch
line,
at
508
mm
(20
in.)
per
second.
Each
vertical
column
can
have
eight
rows
of
dots.
n
1
and
n
2
are
binary
numbers
that
specify
the
number
of
bit-image
data
bytes
to
transfer.
All
bit-image
graphics
print
from
left
to
right.
The
total
number
of
bit-image
data
bytes
is
equal
to
n
1
+
(n
2
x 256)
and
cannot
exceed
480
(the
total
number
of
dot
positions
in
an
8-inch
line).
For
example,
to
print
480
dot
columns
, n
1
=
224
and
n
2
=
1.
The
printer
discards
any
data
bytes
over
the
amount
of
480.
Bit-image
graphics
print
using
eight
of
the
nine
print
head
wires
(the
bottom
wire
is
not
used). v
1
through
v
480
are
bit-image
data
bytes.
Continued
on
next
page.