Tagged “paper-handling”
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Knowing you scanned every page
A page lost to a double feed leaves no trace in the file. Detection sensors, page counts and one arithmetic habit are the only defences you have.
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Duplex scanning, and what blank-page removal deletes
Two mechanisms hide behind one word, and the setting that tidies up after them is the only one on the device that can throw a page away.
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Scanning faded thermal paper
A faint slip is a contrast problem, not a resolution problem. The controls that help are exposure, colour mode, and lighting — in that order.
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Scanning very long receipts
A till roll can be longer than any page a scanner expects. What long-paper modes actually do, where they stop, and how to capture the rest.
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Why receipts jam, and what to do about it
Jams have causes you can read off the paper afterwards: curl, coating, wear, or something that should never have entered the feed path.
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How a document feeder works
A feeder has to separate one sheet from a stack, then move it at a constant speed. Both jobs are harder with receipts, and both wear out.