Datamax-O'Neil H-Class Linear Scanner Option User Manual
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7
Integrity and Speed
If the primary objective is to ensure that correct data is read over a significant region of the
symbology, maximize integrity by (1) increasing the REDUNDANCY LEVEL or the MIN
READABLE HEIGHT setting, (2) slowing the print speed, and (3) increasing the bar code height.
When emphasizing data accuracy, the allowable maximum throughput rate may be affected.
If the primary objective is to achieve the highest label throughput rate, maximize speed by (1)
decreasing the REDUNDANCY LEVEL or the MIN READABLE HEIGHT setting, and (2)
increasing the print speed. When emphasizing throughput, data reliability may be affected.
Media and Ribbon Selection
For best results use carbon-based inks on matte-finished label stocks to achieve a high print contrast.
Label Layout
For proper recognition, the Linear Scanner must be positioned over the bar codes, and the codes
used and the label layout must meet certain requirements:
The bar codes must be placed in the picket fence orientation, with proper quiet zones, and a
narrow bar resolution that is no less than the scan resolution position.
If encoding the same information in multiple-up bar codes arranged in ordered columns (see
below), allow at least ¼ inch of white space between the rows.
104
104
104
104
104
104
1/4 inch (6.5 mm)
Row
Column
Direction
When printing bar codes on small labels, avoid the possible need for backup repositioning by
placing the code(s) near the leading edge of the label.
Although a reduction of print speed may actually improve throughput, to maintain proper
detection when printing small bar codes at high speeds the following parameters should not be
exceeded:
Minimum Bar Code Height
Maximum Print Speed (IPS)*
1/16 inch (1.5 mm)
8
1/8 inch (3 mm)
10
* Inches per Second