The alignment markers are out of focus in the image.
If the alignment markers are not in focus in the image, they may not be readable. Perform imaging by focusing on the alignment markers.
The camera's flash is off.
If the camera's flash is off, the alignment markers may not be readable. Turn the flash on before capturing the image.
The place where the imaging is performed is too bright/dark.
If you perform imaging in an excessively bright place, the black portion of the alignment marker cannot be recognized (A), and if you perform imaging in an excessively dark place, the white portion cannot be recognized (B).
If you perform imaging in a place that is excessively bright or dark, the alignment markers cannot be read and image conversion will fail.
Perform imaging by adjusting the light shining on the alignment markers.
Adjust room brightness
Adjust light source position or printer position
Adjust camera exposure
The brightness difference between the four alignment markers is significant.
If you do not perform imaging of the four alignment markers with the same level of brightness for each marker, some locations may not be recognizable. If all four markers are not recognized, image conversion will fail.
Perform imaging by making sure that the brightness is the same for the four alignment markers.
Adjust light source position or printer position
Adjust by increasing or decreasing the light coming from the light source
The color difference between the alignment markers and the tape is minor.
If the Print White Alignment Marker Background check box is cleared, the image conversion will fail if the tape color cannot be recognized as white.
Select the Print White Alignment Marker Background check box, and then print the alignment markers again.
Change the smartphone you are using to capture the image.
The alignment markers may not be readable depending on the smartphone that is used. If the alignment markers cannot be read even after you implement the above countermeasures, switch to a different smartphone and perform imaging again.
