10/10/03

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 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.

CHAPTER 6 EPSON - 6

Page 258
Image 258
Homelite HL-1250, HL-P2500, HL-1660E, HL-2400CE, HL-1450, HL-1050, HL-1470N Emulation Details, Ignored Commands, Resolution