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ONE
CHARACTER
ROW
DIRECTION OF SHUTTLE MOVEMENT
DOT
ROW START
1 |
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2 |
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3 |
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4 |
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5 |
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6 |
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7 |
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8 | * |
9 | * * |
10 |
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11SPACE
12
1
2
1 HAMMER | 1 HAMMER |
PRINT SPAN | PRINT SPAN |
PAPER
ADVANCES
PAPER
FEED
PAPER
ADVANCES
*USED FOR LOWERCASE DESCENDER ONLY
**USED FOR UNDERLINE AND LOWERCASE DESCENDER
NOTE: P9012 SHUTTLE SWEEPS THROUGH 1.5 CHARACTER POSITIONS AT 10 CPI
Figure 1-2. Line Matrix Printing
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. Table
Table
| P9012 PRINT RATE (LPM) | |
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| Uppercase Characters | Upper & Lowercase |
Print Mode | (No Descenders) | Characters |
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High Speed A (HS) | 1200 | 1030 |
High Speed B (HSB) | 1030* | 900 |
High Speed C (HSC) | 1030* | 800 |
Data Processing (DP) | 900 | 720 |
Correspondence (NLQ) | 480 | 370 |
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*1030 lpm at 8 lpi; at 6 lpi, the print rate is slightly lower.
Overview |