4.1. Normal-density bit image mode setting by ESC K + nl + n2

To

convert the

printer’s

operation mode

from

Text to Normal-density

Bit

Image,

t h e “ E S C

K

+ In+

n2 ”

code must be

input.

(Here,

the sign

“+" is

inserted for

the

purpose

of legibility only and should

not be

input

in

actual

operation.) Namely,

w h e n E S C

( < 1 B >H )

and K (<4B>H ) codes and data

nl a n d

n2 are

input,

the

Printer recognizes the data following the “ESC

K” as the bit image data. lnand

n2

are

the hexadecimal numbers each consisting of 2 digits

which

define

the

amount

of

the bit image

data

to

be

transferred.

 

 

 

 

 

 

 

 

n1 represents

the

low-order

two digits while n2 represents

the high-order

two

digits.

In the normal-density bit image processing, the maximum number of dot positions

printable per line is 480. Therefore, the values of nl and n2 specified in excess of 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 n1 and n2, respectively as follows.

As shown above, n1 is set hexadecimally as low-order bytes and n2 as high-order 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.

 

 

 

 

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