Xerox 6180N Using LCDS Print Description Language - Page 326
Pitch modes and throughput performance, pitch modes, Table 4-78. Pitch mode minimum and maximum
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Specifying print format parameters • Pitch modes and throughput performance: The printing system can operate in several different pitch modes: 3, 4, 5, 6, and 7. The following table shows the minimum and maximum boundary values for each pitch mode and the default paper sizes that can be specified with the TMODE parameter. The table shows these default scan values in inches (IN), centimeters (CM), DOTS, and XDOTS (dots at 600 dpi), along with their associated print speeds in pages per minute (ppm). Table 4-78. Pitch mode minimum and maximum boundary values and pages per minute printing speeds PITCH IN 3 15.31 x 17.00 4 12.12 x 15.31 5 10.19 x 12.12 6 9.01 x 10.19 7 7.40 x 9.01 8 7.00 x 7.40 *Pages per minute CM MM DOTS XDOTS PPM* 38.9 to 43.18 389 to 431.8 4595 to 5100 9190 to 10200 77 30.8 to 38.9 308 to 389 3639 to 4594 7277 to 9189 103 25.9 to 30.8 259 to 308 3060 to 3638 6119 to 7276 128 22.9 to 25.9 229 to 259 2705 to 3059 5410 to 6118 154 18.8 to 22.9 188 to 229 2221 to 2704 4442 to 5409 180 17.8 to 18.8 178 to 188 2100 to 2220 4205 to 4441 206 - In 7 pitch mode (the normal pitch mode for printing), the printer can process paper from 8 inches by 10 inches to 9.01 inches by 14.33 inches or 203 by 254 to 229 by 364 mm, in long-edge feed mode. This means the sheet is fed into the paper path with its long edge first. In this pitch mode, the printer prints with full productivity at 180 pages per minute, with seven page images per photoreceptor revolution. - For papers whose width ranges from 9.01 inches to 15.31 inches, the printer prints with slightly reduced productivity. The reason for this is that for papers in this width range, the normal image area extends into the interimage zone that is normally used for xerographic process controls. In order to maintain the best productivity possible, xerographic process controls are temporarily suspended. Periodically, the system induces about 14 skipped "images" in order to perform a xerographic process control check and to ensure that the highest print quality is maintained. The printer then resumes printing at full productivity. 4-86 Using LCDS Print Description Language