NCR 7156, Руководство пользователя, Страница: 121 / 138

7156 Owner’s Guide Appendix A: Specifications
September 1997 115
Dimensions and Weight
Height
178 mm (7.0 Inches)
Height with Cover Open
280 mm (11.0 Inches)
Width
229 mm (9.0 Inches)
Depth
264 mm (10.4 Inches)
Depth with Extended Slip
Table
347 mm (13.7 Inches)
Weight
4.6 Kg (10.1 Pounds), Non-MICR,
Includes Paper Roll)
4.8 Kg (10.5 Pounds), MICR and
Extended Slip Table
Density of Receipt Print Lines
When the receipt station prints high density print lines (text or graphics), it automatically
slows down to a rate slower than 1020 lines per minute. High density print lines are
defined as lines with over 57% of the dots printing on the line (there are 448 total dot
columns on the print station).
Duty Cycle Restrictions (Printing Solid Blocks)
There are restrictions on the duty cycle because of the heat generated by the receipt
thermal printhead 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
printhead will heat up and shut down. This may damage the printhead.
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