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Overview1-4
DOT
ROW START
PAPER
ADVANCES
PAPER
FEED
PAPER
ADVANCES
SPACE
1
2
3
4
5
6
7
8
9
10
11
12
1
2
*
**
USED FOR LOWERCASE DESCENDER ONLY
USED FOR UNDERLINE AND LOWERCASE DESCENDER
*
**
ONE
CHARACTER
ROW
DIRECTION OF SHUTTLE MOVEMENT
NOTE: P9012 SHUTTLE SWEEPS THROUGH 1.5 CHARACTER POSITIONS AT 10 CPI
1 HAMMER
PRINT SPAN
1 HAMMER
PRINT SPAN
Figure 1-2. Line Matrix P
rinting
Print Rate
The print rate, in lines per minute (lpm), is a function of the number of dot rows required to
produce the character line regardless of the number of characters in the line. For example,
more
dot rows are required to print lowercase characters with descenders; consequently, those
characters
are printed at a slower rate. T
able 1-1 describes the print
rate according to type of
character printed and print mode. Complete printing specifications are provided in the ApĆ
pendix.
Table 1-1.
P
rint Rate
P9012 PRINT RATE (LPM)
Print Mode
Uppercase Characters Upper & Lowercase
Correspondence (NLQ)
Data Processing (DP)
High Speed A (HS)
480
900
1200
370
720
1030
High Speed B (HSB)
High Speed C (HSC)
1030*
1030*
900
800
(No Descenders) Characters
*1030 lpm at 8 lpi; at 6 lpi, the print rate is slightly lower.