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-2060/1650/1670N/
2460/7050/1850/1870N/5050/5070N/5150D/5170DN/6050/6050D/6050DN/8050N/2070N/5240/5250D
N/5270DN/5280DW/5340D/5350DN/5370DW/5380DN/5440D/5450DN/5470DW/6180DW 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.
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