Epson LQ-1000 User Manual - Page 83

a single line of triple-density graphics only one inch long requires 540 numbers. Fortunately, commercial software can do the calculations for you. Before you can put these numbers in a graphics program, however, you need to know the format of the graphics command. Graphics Command The graphics mode command is quite different from the other commands covered so far in this manual. For most of the other LQ modes, such as emphasized and double-width, one ESCape code turns the mode on and another turns it off. For graphics, the command is more complicated because the code that turns on a graphics mode also specifies how many columns it will use. After the LQ receives this code, it interprets the next numbers as pin patterns and prints them on the paper. The LQ has one command that allows you to use any of the 11 graphics options. The format of the command is: ESCape "*" m n1 n2 data 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 in Table 6-1. Table 6-1. Graphics Options *Adjacent dots cannot be printed in this mode 6-5