Ignored Commands ; Esc 9; Esc 8 - Page 269

2001/10/02 

CHAPTER 6 EPSON - 6 

3. 

EMULATION DETAILS 

The following points should be borne in mind when using the printer in Epson FX-850 mode. 

3.1. 

Ignored Commands 

The following commands are ignored: the 

BEL 

control code (ASCII code 7) which is normally used to 

sound a printer’s bell, the 

DC1 

(ASCII 17) and 

DC3 

(ASCII 19) control codes, used to enable and disable 

a printer, the 

Esc 9

 and 

Esc 8 

commands, which normally enable and disable the out-of-paper sensor, the 

Esc <

 and 

Esc U

 commands for enabling unidirectional printing and the 

Esc x

 control code for choosing 

between near letter quality and draft printing.  

In addition, commands that try to change the printer’s printing speed cannot do so, since the HL-Series 
printers always print as fast as they can.  Hence, the 

Esc s

 command, to select or cancel half-speed 

printing mode, is also ignored, and the 

Esc Y

 escape sequence (Print Double -Speed, Double-Density 

Image), performs the same function as the 

Esc L

 (Print Double-Density Image) command. 

3.2. 

Resolution 

The resolution of our recent printers is 600 dots per inch.  (HL-2060 supports 1200dpi.)  Some instructions 
use fractions of an inch by which 600 is not exactly divisible, for example 

Esc J

 performs a line feed using 

a line spacing of n/216".  Similarly, there are graphics commands which specify resolutions of 72, 120 and 
240 dots per inch.  When a line spacing or graphic cannot be implemented exactly at 600 dots per inch the 
printer approximates as closely as possible using 600 dots per inch.