Chapter 6: Graphics Commands for 9-Pin Printers 55Graphics Density Selection Commands (ML) ML320 Std., ML321 Std. ML320 Turbo, ML321 Turbo ML520, ML521Function ASCII Dec HexSelect Single Density Graphics ESC Por ESC Q27 80or 27 811B 50or 1B 51Select Double Density Graphics ESC R 27 82 1B 52Select Double Speed &Quadruple Density GraphicsESC # Q 27 35 81 1B 23 51Use these commands to select the density of the printing that will be used: single density (60dpi), double density (120 dpi), or quadruple density (240 dpi). The quadruple density selectioncommand also engages double speed.Graphics Select/Print Command (Epson) ML320 Std., ML321 Std. ML320 Turbo, ML321 Turbo ML520, ML521Function ASCII Dec HexGraphics Select/Print ESC * m L n Hn [data] 27 42 m L n Hn[data]1B 2A m L n Hn [data]This command is used to select the density, to designate the number of columns of data you'llbe sending, and to specify the data to be sent.Parameter mThis parameter specifies which density to use when printing the graphic image. The tablebelow indicates the type of density for each value of m.Table 37: Epson ESC * m Command —8-Pin Graphics Density Codes for m Values (9-Pin Printers)Value of m Graphics Type Horizontal Density (dots per inch)0 Single Density 60 dpi1 Double Density 120 dpi2 High Speed Double Density 120 dpi3 Quadruple Density 240 dpi4 CRT I 80 dpi5 Plotter (Single Density) 72 dpi6 CRT II 90 dpi7 Double Density Plotter 144 dpi
