Receipt Throughput - NCR 7158 Owner's Manual

Receipt Throughput:

Maximum throughput is achieved at any dot coverage up to 25%,
which includes any amount of text. But above that, throughput is
dependent on the dot coverage and available electrical power.
25% Dot Coverage
(Max Speed)
0.95 ms
Dot line period:
130 mm/sec
Paper Speed:
5.1 IPS
41.5 LPS
Throughput @
8.13 LPI:
38.4 LPS
Throughput @
7.52 LPI:
30.5 LPS
Throughput @
5.98 LPI:
Note: Standard receipt has approximately 12% dot coverage.
A full line of text is approximately 25% dot coverage.
Graphics are approximately 40% dot coverage.
Barcodes have approximately 50% dot coverage.
A solid black line is 100% dot coverage.
In order for an application to achieve the fastest throughput it must
ensure that data arrives at the printer at least as fast as it is printed, so
the printer will be able to print each line after the preceding line,
without stopping to wait for more data. Ideally, an application will
send all the data for an entire customer receipt without pausing
between characters or lines transmitted.
50% Dot Coverage 50% Dot Coverage
and 75 W and 55 W
0.95 ms 1.33 ms
130 mm/sec 94 mm/sec
5.1 IPS 3.7 IPS
41.5 LPS 30.1 LPS
38.4 LPS 27.8 LPS
30.5 LPS 22.1 LPS
Chapter 5: Technical Specifications 5-21
100% Dot Coverage 100% Dot Coverage
and 75 W and 55 W
2.05 ms 3.3 ms
61 mm/sec 38 mm/sec
2.4 IPS 1.5 IPS
19.5 LPS 12.2 LPS
18.0 LPS 11.3 LPS
14.4 LPS 9.0 LPS