There are a few potential causes of lower than expected resolution when scanning documents.
1. Poor scanning source: If the quality of the original document being scanned is poor, the resolution will be lower than expected. This could be due to an old paper copy, or damage to the document. Make sure to check the quality of the document before scanning it in.
2. Wrong settings: The resolution of the scanned document can be adjusted by changing the settings on the scanner. Make sure to select the appropriate settings for the document being scanned and the required output resolution.
3. Low-resolution error: Scanners have an upper limit on the resolution they can support, so if a higher resolution is selected the final scan may be of lower quality. Make sure to check the specifications of your scanner to see what the maximum resolution is and ensure it’s set accordingly.
4. Software issues: If the scanner is not compatible with the computer’s operating system or the software used to open the scan, this can cause the resolution to be lower than expected. Ensure that the correct software is installed and up to date.
5. Mirror image: Many scanners will automatically produce output as a mirror image of the source material. To stop this, make sure to double check the orientation settings on the scanner before beginning to scan.
6. Hardware issues: An aging scanner or dirt and dust on the glass bed of the scanner can reduce the quality of the output.
In summary, a lower than expected resolution when scanning documents can be caused by a variety of issues, including poor scanning source, wrong settings, low resolution errors, software issues, mirror image output, and hardware issues. Make sure to check all of these potential causes before attempting to scan any documents.