Tagged “desktop-scanners”
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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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What the sensor actually sees
The optical path sets sharpness before any setting does: a light source, a lens or none at all, and a white strip the scanner reads to calibrate itself.
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Card scanners and other single-purpose devices
Devices built for one media size do that job well and nothing else. What the narrow feed path buys you, and what strands the machine years later.
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Scan profiles and the one-touch button
A profile is a saved bundle of capture settings behind a single button. Getting one receipt profile right is worth more than tuning any setting twice.
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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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Testing a scanner with your own paper
Specification sheets are measured on paper you do not own. A repeatable test batch of your real receipts tells you what a device will actually do.
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The multifunction printer as a receipt scanner
You may already own a feeder and a flatbed. Where an all-in-one printer is genuinely adequate for receipts, and the three places it isn't.
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Wireless scanning: where the file actually goes
A wireless scanner sends your receipt somewhere before you see it. Push, pull and relay transfers differ in who handles the document on the way.
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Scanner cleaning and consumables
The parts that touch paper are meant to wear out. Treating rollers and pads as consumables is the difference between a five-year device and a fussy one.
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Diagnosing scan defects by their shape
A line down every page, a band across one, a shadow in a corner. Each defect shape points at a different part of the machine or the paper.
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Deskew, autocrop and auto-rotate: helpful until they aren't
Automatic image cleanup guesses where the page ends and which way is up. On an irregular slip both guesses can go wrong silently.
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Compression is why your scans look worse than the paper
The sensor read the slip correctly and the file lost some of it afterwards. Where lossy compression damages small print, and how to stop it.
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Colour, greyscale, or bitonal for receipts
Bitonal makes the smallest files by throwing a hard threshold at every pixel. On faint thermal print that is exactly what you cannot afford.
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What dpi does to a receipt scan
Resolution buys detail up to the limit of the sensor and nothing after it. Where that limit sits, and why more dpi can make a slip harder to read.
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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.
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Sheetfed, flatbed, or overhead: choosing by the paper you have
The right scanner mechanism is decided by your worst piece of paper, not your average one. What each type handles well, and what defeats it.
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Fujitsu ScanSnap S300 Color Mobile Scanner
Fujitsu ScanSnap S300 review: a compact USB-powered document and receipt scanner with auto feeder.
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NeatDesk Desktop Scanner
NeatDesk Desktop Scanner review: an ADF desktop scanner that turns receipts, cards, and documents into searchable digital files.
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NeatDesk Desktop Scanner for Mac
NeatDesk Desktop Scanner for Mac review: a good-looking desktop scanner let down by disappointing Mac software and poor OCR.