IBM 6400-I15 Maintenance Manual - Page 342

6400-014 376, 000 pages per month 6400-015 376, 000 pages per month -under the following conditions: ♦ Uppercase text characters only (no graphics) ♦ 6 lines per inch ♦ 10 characters per inch ♦ 63% character density or 83 characters per line ♦ 63% line density or 42 lines per 11-inch page ♦ Single part (18 lb) paper ♦ Printer is installed in accordance with the Setup Guide ♦ Printer is maintained in accordance with this maintenance manual Printing Rates The printing speed of ASCII and Kanji/Hanzi characters is measured in lines per minute (lpm). The printing speed of text is a function of the selected font and the vertical dot density, and is independent of the number of characters configured in a character set repertoire. Print rates for lines containing attributes such as bold or emphasized printing, superscripts, subscripts, or elongated attributes will decrease to not less than half the rates of lines without such attributes. The exact print rate of lines containing these attributes depends on the specific print job, but software maximizes the throughput by dynamically determining which dot rows contain adjacent dots and must be printed in two strokes. The printing speed of graphics ("plot mode") is expressed in inches per minute (ipm). The printing rates of ASCII printers are shown in Table 6. The reverse paper feed capability allows the printing of multiple densities on a single line. This is useful when printing forms and text together or for mixing fonts on the same print line. Use of multiple densities and reverse paper feed also affects throughput. 342 Printer Specifications