Printing Rates - IBM 6500 User Manual

RISC System/6000
following are required:
v IBM Async cable EIA-232/V.24
v Printer/terminal interposer EIA-232
v Serial Cable Kit (PN 12H1204)
Coax/Twinax Interface Feature: Contact your IBM service representative for
attachment requirements.

Printing Rates

The printing speed of text is measured in lines per minute (lpm), and is a function
of the selected font and the vertical dot density. Printing speed is independent of
the number of characters configured in the 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
the font 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. Table 11 lists typical printing rates.
The reverse paper feed capability allows the printing of multiple densities on a
single line. This is useful in printing forms and text together or in mixing different
fonts on a print line. Use of multiple densities and reverse paper feed also affects
throughput.
Table 11. 6500–v Nominal Print Rates (1 of 2)
PRINT QUALITY
DOT DENSITY (DPI) CHARACTERS
Note 1 PER INCH
CORRESPONDENCE
90 (180) x96
DATA PROCESSING
60(120) x72
HIGH SPEED
60(120) x 48
Note 1 A (B) x C, where:
Note 2 D (E) x F + G, where:
Table 12. 6500–v Nominal Print Rates (2 of 2)
PRINT QUALITY
DOT DENSITY
(DPI)
Note 1
CORRESPONDENCE
90 (180) x 96
258
Infoprint 6500 User's Manual
®
: For RS-232 attachment to the IBM RISC System/6000, the
DOT MATRIX
Note 2
10 7(13) x 9+3
12 6(11) x 9+3
15 (9) x 9+3
10 5(9) x 7+2
12 4(7) x 7+2
13.3 4(7) x 7+2
15 3(5) x 7+2
17.1 3(5) x 7+2
10 5(9) x 5+1
12 4(7) x 5+1
13.3 4(7) x 5+1
CHARACTERS DOT MATRIX
PER INCH
10 7(13) x 9+3
12 6(11) x 9+3
15
PERFORMANCE
Uppercase Only LPM
500 1000 1500 2000s
200 400 600 842
375 750 1125 1500
500 1000 1500 2000
A is maximum horizontal dot density
B is horizontal dot placement density
C is vertical dot density
D is maximum number of dots that may be placed on
E horizontal positions
F is number of vertical dots for uppercase symbols
G is number of dots available for descenders
Note 2 500
21
(9) x 9+3
Descenders & Underline LPM
500 1000 1500
500 306 459
300 600 900
428 865 1284
PERFORMANCE
Plot Mode IPM
1000 1500
42 61
2000s
648
1200
1714
2000
87