Epson LQ-850X User Manual - Page 131
Column Reservation Numbers, Single-density
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In this command, m selects the graphics option and n1 and n2 specify the number of columns to reserve for graphics. The available graphics options are listed below: Option Pins Single-density 8 Double-density 8 High-speed double-density* 8 Quadruple-density* 8 CRT I 8 CRT II 8 Single-density 24 Double-density 24 CRT III 24 Triple-density 24 Hex-density* 24 l Adjacent dots cannot be printed in this mode. m Horiz. density Dots/in. 0 60 1 120 2 120 3 240 4 80 4 90 31 60 33 120 38 90 39 180 40 360 Column Reservation Numbers The graphics command requires more than one number to specify how many columns to reserve because one line can use thousands of columns, but the printer does not use numbers larger than 255 in decimal. Therefore the graphics mode command uses two numbers, n1 and n2, for reserving columns. To find n1 and n2, divide the total number of columns by 256. The result is n2; the remainder is n1. Since the command is set up for two numbers, you must supply two even if you need only one. When you need fewer than 256 columns, just make n1 the number of columns you are reserving and make n2 a zero. Software and Graphics 4-15