Lexmark Forms Printer 2480 Technical Reference - Page 49

Graphics Print Modes Normal Density Bit Image Graphics Use this command to print normal density bit images at 60 dots per inch (dpi) horizontally and 72 dpi vertically. Format ESC K Ln Hn data Decimal 27 75 Ln Hn data Hex 1B 4B Ln Hn data Usage Notes • Ln and Hn identify the number of bytes in data. To print less than 256 bytes: - Hn is 0. - Ln is the number of bytes you want to print. To print more than 256 bytes: - Divide the number of bytes you want to print by 256. - The result is Hn. - The remainder is Ln. • data is the bit-mapped graphics information. Each vertical dot column can have 8 rows of dots. To print bit image graphics, the printer uses either the first 8 (248x) or 20 (249x) wires of the printhead to map the eight bits of data. The following table shows how the print wires are mapped for the 249x printer: Bit Number 7 6 5 4 3 Binary Value 128 64 32 16 8 Print Wires 1, 2 If dots 7 and 6 print, wire 3 is also used 4, 5 6, 7 If dots 5 and 4 print, wire 8 is also used. 9, 10 11, 12 If dots 3 and 2 print, wire 13 is also used. 49 Section 3: IBM Emulation Mode Printer Commands