Epson MX-80 Operation Manual page 74

4.1. Normal-density bit image mode setting by ESC K + n
To convert the printer's operation mode from Text to Normal-density Bit Image,
t h e " E S C K + n
the purpose of legibility only and should not be input in actual operation.) Namely,
w h e n E S C ( < 1 B >
Printer recognizes the data following the "ESC K" as the bit image data. n
are the hexadecimal numbers each consisting of 2 digits which define the amount
of the bit image data to be transferred.
n represents the low-order two digits while n
1
In the normal-density bit image processing, the maximum number of dot positions
printable per line is 480. Therefore, the values of n
480 dot positions are ignored and printing of the bit image data after the 480th dot
position is not guaranteed.
Mixing of text data and bit image data is possible on the same line.
NOTE: Assign values to n
As shown above, n
bytes.
(Ex. 1) Input data
20 characters in text mode correspond to 120 bit-image positions (20 x 6 = 120).
So the remaining printable positions in Bit-image mode are 360 (480 - 120 = 360).
If 480 data are input as bit-image mode characters, the first 360 data can be printed
but the remaining 120 data are ignored and thus not printed.
" code must be input. (Here, the sign "+" is inserted for
+ n
I 2
) a n d K ( < 4 B >
H H
and n , respectively as follows.
1 2
is set hexadecimally as low-order bytes and n
1
) codes and data n
represents the high-order two digits.
2
and n
l
- 6 8 -
+ n
l 2
a n d n a r e i n p u t , t h e
l 2
and n
l
specified in excess of
2
as high-order
2
2