Vertical distance between bar codes is also a speed consideration in parallel bar code direction. The verifier must have five continuous scans where no bar code is detected to reliably exit a bar code when operating in the standard operation mode. Assuming 100 scans per second minimum, this means the vertical distance between the codes must take at least 50 milliseconds to pass through the laser beam. Calculate the maximum speed by measuring the shortest vertical space between bar codes on a label (or between labels.) Divide this distance by .050 (seconds). The result is the fastest speed the codes can move through the beam. For more detailed information about the vertical distance between bars, refer to the SV Series Operator’s Guide.

The slower of the two print speeds calculated above for bar height and gap height is the maximum recommended speed for parallel bar code travel direction.

Parallel Bar Code Positioning Specifications

•Four codes across maximum

•Horizontal gap between codes: 0.5 inch (13 mm) minimum

•Maximum number of codes per label: 10

No-Scan Zone

Allow approximately a 0.50-inch (13 mm) at the trailing edge of each label for the no-scan zone. The trailing edge is the edge of the label that exits the printer last; regardless of how the format is designed on the label.

Do not place bar codes in the no-scan zone.

Trailing Edge

Shaded

 

area

 

(trailing

 

edge) is

 

the no-

 

scan zone.

Leading Edge

 

4” wide by 1.2” tall label

 

2-14Operating Instructions