Missing dotted line when scanner output

When the scanned image is displayed on the screen or printed out, there is always a missing dot-line phenomenon.

1. First of all the sensor inspection, and then the paper guide mechanism to see if there is a problem, if you want to find professionals to carry out maintenance.

2. The optical lens of the scanner to dust, with a professional vacuum cleaner treatment effect better.

3. Check the scanner Shell white correction bar is dirty, need to be cleaned in time.

4. Check the table of the glass is dirty, or scratches, to regularly clean the manuscript of the scanner, you can avoid this situation.

Scanners are photoelectric, mechanical integration of products, some problems can be excluded, but some problems need to find professionals to repair.