Panasonic LP-ABR11 Setup And Operation Manual page 44

4.2.5 Black Level Adjustment
(8) Black Level Adjustment [DDMblack]
This is a reserved parameter. Set it to 0 always.
DDMblack=0
4.2.6 Image Preprocessing
(9) Image Preprocessing [DDMpreproc]
If the image quality is low, by using an appropriate image filter at the image
preprocessing may improve the reading accuracy
4.2.7 Mirrored Image
(10) Mirrored Symbol [DDMmirror]
Configures the reading of normal typed labels and mirrored image labels.
DDMmirror=a
0: Read only normal type (not mirrored)
1: Read only mirrored type
2: Read both of normal type and mirrored type
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