Adjustable hinges let you close the cover over your item for a proper scan. If you've tried scanning a thicker item-like a spiral notebook, a textbook, or a manual-on a flatbed scanner, you might have noticed that the lid doesn't close over the item properly. If the scanner captures both sides at once, the test is set to "Automatic (Single-Pass)," and if it needs to flip the paper over to scan the second side, it gets "Automatic (Dual-Pass)." If the printer requires you to flip over the page yourself, then it gets "Manual." Max Flatbed Scan Size If there's an ADF, we look for a double-sided scanning option and try to scan a two-sided document to see if it does indeed capture both sides automatically in one go. If the printer doesn't have one, it automatically gets a "No" for the Duplex Scanning test. A duplexing automatic document feeder (DADF) scans both sides at once.ĭuplex scanning requires an ADF. A reversing automatic document feeder (RADF) captures one side of a document, flips it over, then scans the other side. If you regularly need to scan significant quantities of double-sided documents, you'll want to make sure your printer's scanner supports duplex scanning.ĭuplex scanning is the ability to scan both sides of the same document without having to flip the page over yourself. It includes placing the sheet on the flatbed glass, scanning the sheet, opening the scanner lid to retrieve the sheet, and restarting the process. If the printer doesn't have a sheetfed scanner, we measure how many pages we can manually scan on the flatbed scanner in one minute. If a printer's spec sheet doesn't mention "auto-feeder" or "automatic document feeder," it doesn't have this feature. It includes the speed to place the sheet in the feeder, hit scan, and start scanning the next sheet. In this case, we measure how many pages are scanned in one minute. Sometimes, the printer might have a sheetfed scanner that can't automatically process multiple sheets in a row without user intervention. If the printer has an automatic document feeder, we test how long it takes to scan 20 pages automatically. If you need to scan long documents frequently, you might want to know how long the process might take. Waiting for your printer to scan a long, multi-page document can be very tedious. If it has both types, then it gets Flatbed + ADF. If it has an ADF only, it gets ADF as the result. The results are pretty straightforward: If the printer has a flatbed scanner only, it gets "Flatbed" as the result. This means that instead of having to place each page of a document on the scanner yourself, you just set them all in the input tray, hit start, and the ADF handles the rest. On the other hand, an ADF automatically feeds through multiple sheets of paper into the sheetfed scanner, and the document is ejected once it's done scanning. Since there's usually space for only one sheet on the glass, you can only do one scan at a time. You place the document you'd like to scan on top of the flatbed, and the scan head moves beneath the glass to capture your document. Just like the name suggests, a flatbed scanner has a scan head placed underneath a flatbed of glass or clear plastic. If you want to scan delicate documents like photographs or old letters, or thicker objects like ID cards, passports, or books, then you need a flatbed scanner.
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