NCR 7167 - Duty Cycle Restrictions (Printing Solid Blocks)

7167 Owner’s Manual Appendix A: Specifications
November 2003
256
Duty Cycle Restrictions (Printing Solid Blocks)
There are restrictions on the duty cycle because of the heat generated by the receipt
thermal print head when printing solid blocks (regardless of the length of the block in
relation to the print line). The restrictions are ambient temperature, the percentage of time
(measured against one minute) of continuous solid printing, and the amount of coverage.
Caution: When the duty cycle approches the limits shown in the table, the receipt print
head will heat up and shut down. This may damage the print head.
To avoid this problem, do one or a combination of the following:
1. Reduce the amount of coverage.
2. Reduce the time of continuous solid printing.
3. Reduce the ambient temperature.
Ambient Temperature
Amount of Solid Coverage
25° C 35° C 50° C
20% 100% of 1 min.
continuous
printing
50% of 1 min.
continuous
printing
20% of 1 min.
continuous
printing
40% 50% of 1 min.
continuous
printing
25% of 1 min.
continuous
printing
10% of 1 min.
continuous
printing
100% 20% of 1 min.
continuous
printing
10% of 1 min.
continuous
printing
3% of 1 min.
continuous
printing