Lexmark Dot Matrix Technical Reference - Page 11

Print Speeds Your printer supports the following burst print speeds in characters per second (cps). Mode Fast Draft • 10 cpi • 12 cpi Draft • 10 cpi • 12 cpi Near Letter Quality Gothic, Courier • 10 cpi • 12 cpi Letter Quality Prestige, Presentor, Orator, and Script • 10 cpi 2480/2481 • 438 cps • 510 cps • 309 cps • 304 cps • 77 cps • 76 cps N/A 2490/2491 • 409 cps • 465 cps • 274 cps • 328 cps • 91 cps • 109 cps 91 cps Printhead Description Your printer uses dot-matrix impact technology to generate characters. The 248x has a 9-wire printhead. The 249x has a 24-wire printhead. 248x The 248x printhead has nine wires arranged in a single vertical column. The diameter of each wire is 0.30 mm (0.012 in.). The center-to-center distance between wires is 0.353 mm (1/72 in.). The printhead has an impact force sufficient to generate readable copies on multipart forms and envelopes up to and including 6-ply forms (original plus 5 copies). 249x The 249x printhead has twenty-four wires arranged in two parallel vertical columns of twelve wires each. The diameter of each wire is 0.22 mm (0.009 in.). The wires in each of the rows are vertically separated to produce a 0.141 mm (1/ 180 in.) space between the centers of adjacent dots. The printhead has an impact force sufficient to generate readable copies on multipart forms and envelopes up to and including 4-ply forms (original plus 3 copies). 9 Section 1: Introduction