IBM 4400 manual Graphics, Quadruple Density, Half Speed Mode, On/Off

Chapter 6 Configuring the Epson FX-1050 Emulation with Control Codes

Graphics, Quadruple Density

ASCII Code ESC Z n1 n2

Hex Code	1B 5A n1 n2
Dec Code	27 90 n1 n2
Purpose	Selects Quadruple Density Bit Image graphics of 240 dpi
	horizontally and 72 dpi vertically.
where:	(n1 + 256n2) defines the number of data bytes to follow.
	DATA = ASCII characters for the dot pattern bytes.

NOTE: The DATA can be expressed in a format with the appropriate decimal values of the ASCII characters supplied, especially in cases where the dot patterns of nonprintable characters are required.

“DATA” consist of 8-bit dot columns, with the MSB at the top, and “1” bits producing dots. For more information, refer to Chapter 8, “Graphics.”

Comment This mode is similar to ESC L, except that four dot columns are printed in the space normally taken by two columns. You can change graphics density with the ESC ? command.

Example The following example produces quadruple density graphics of the pattern used in the standard density example. The amount of data must be quadrupled for quadruple density (the data are used 108 times rather than 27).

Half Speed Mode, On/Off

ASCII Code ESC s n

Hex Code	1B 73 n
Dec Code	27 115 n
Purpose	Reduces printer speed 50%
where:	n = hex 00 or 30 turns half speed mode off
	n = hex 01 or 31 turns half speed mode on

†Comment This command is ignored.

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