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8.3
Scanning a Mirror Image 2D Code
If you enable the mirror image scanning with the configuration software (QB Setting), the scanner can scan a mirror image 2D
code as well as a normal image. Note that when the mirror image scanning is enabled, the time required for scanning may
increase.
8.4
Scanning a Black-and-white Inverted Code
The scanner usually scans a black-and-white normal code (black cells/bars on a white background). You can switch the
scanner to scan a black-and-white inverted code (white cells/bars on a black background) or to scan both types of codes while
automatically identifying them, using the commands, the QR-coded parameter menu or the configuration software (QB
Setting).
Note that the automatic detection scanning may take more time than normal code or inverted code scanning.
A black-and-white inverted code requires a black quiet zone of more than the number of cells defined in the code
specifications.
8.5
Decode Time Setting
The decode time can be set at the QB30.The decoding time can be set between 0.05 second to 9.99 seconds, and decoding is
repeated during scannable intervals with the set decode time as the upper limit. If scanning is not completed during decode
time, scanners decode again. Decade time can be set with commands/QR Code menu and configuration software (QB Setting).
(2) Decode time
"Decode time" differs from "the time of period (Scan timing)". For example, scanning timing is set to one second (external
trigger is ON for one second) and decode time is set to 0.3 seconds, the scanner decodes approx. three times during each
scanning timing. (However, decoding is terminated when successful) Decode is repeated for every 0.3 seconds for the
continuous reading mode.
8.6
Bar code Reader Mode
Scannable area of lengthwise direction at the Barcode Reader Mode is limited to the central part of 15% as shown in the
illustration and the skew angle is 6°≧θ≧-6. Therefore, the barcode scanning time of the bar code reader mode is shorter
than that of the original reader mode. However, 2D Code, Multi-line barcode, RSS stack code and EAN, UCC COMPOSIT
can not be read even if they are permitted for reading. Neither QR Code menu nor configuration software(QB Setting )can be
used when bar code reader mode is set, during which USB keyboard interface is being used. In that case bar code reader mode
can be cancelled temporally with approx. 2 seconds of holding down the magic key. (see Chapter 9, Section 9.4).
Scannable area of original reader
mode
Scannable area of bar code reader
mode
（shadow area）
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