When scanning a document I get a long verticle black line on the document

[stuartalan]

When scanning a document I get a long verticle black line on the document. Tried cleaning everything inside the scanner. Line still there. What can I do?

[Dragon-Fur]

@stuartalan 

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This is perhaps either in the printer or there might still be a tiny spec of dirt in the ADF / glass (flatbed).

Try again?

Use a flashlight (torch in the UK); shine the light at an angle along the glass.

Clean, clean, clean.

Use a tiny brush to sweep all along the edges of the glass.

What else?

Known solutions, presented in the order to be considered / completed...

 Improving Scan Quality

And

Resolving Copy Problems

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