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Most are flatbed scanners that have scanning heads sealed in a glass compartment. The unit boasts a powerful scanning mechanism, and its standard document feeder holds sheets of paper. The units listed provide at least ppm or faster text output, with optical resolutions of to dots per inch. In many cases, using a low-cost scanppartner PC color scanner or a dedicated image or photo scanner may take up the slack when color is required.
On one hand Manufacturers usually offer a choice between scanpartnet and duplex models of the same scanner. The higher you go, the slower the scan. OCR software, it is not a question of one or the other but of both.
But this shouldn't deter you if you're looking for quality and performance.
Depending on simplex or duplex operating modes and paper requirements'typically 8. Original documents are passed either manually or via an automatic feeder over the top of the glass, with the scanning heads passing beneath to capture the image. Scanners work faster at lower resolutions.
You need to hunt them down from value-added suppliers or on manufacturers' Web sites. Maximum paper size in inches. Both are made of photosensitive silicon cells and are on the scanning head.
Many scanner manufacturers advertise resolutions of 1, dpi or higher, without mentioning that these are interpolated resolutions that use software and hardware algorithms to fill in the scanpaartner between pixels to make image and text outlines appear clearer and sharper.
Actual optical resolution is a function of a scanner's charge-coupled device or contact image sensor. An automatic document feeder, preferably built-in, allows smooth transfer of the original to the body of the scanner, where the data on the paper can be read by the scanning heads and passed on to the host computer. Automatic document feeder capacity in sheets. As for image editing vs. If you fca a full-page color image, the process will be slowed to 1 page or less per minute.
Maximum resolution in dots per inch. Fifty- and page document feeders are common; more expensive scanners often hold more, but Canon's DR and DRC win the prize in this category with capacities of pages each. Check out scanners designed for a workgroup's no-frills imaging needs By J. Many users need to be able to move hard copy, photos or graphics onto a PC or workstation hard drive so it can be stored, edited or otherwise manipulated for later use.
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Scanners with automatic document feeders can handle documents from small 3-by-5 cards to by tabloid pages in various paper textures. A CCD includes a lens, light source and chip set, along with an analog-to-digital converter for translating the data gathered into digital information.
Select primary job function. New from GCN Computing steps closer to the network's edge. The SCSI-2 interfaces coming with virtually all the scanners listed are necessary to handle high-bandwidth graphics and document management tasks faster than the parallel interfaces used with inexpensive personal or small-office scanners.
Monochrome scanners are fine for most workgroup uses. Sign up for our newsletter. This buying guide features scanners that meet the document processing requirements of typical workgroups and small departments.
SCAN AND DELIVER -- GCN
Low-cost sheetfed scanners use a series scanpartned rollers to move the paper past the imaging elements, just as fax machines do. Please indicate your primary branch of government or business activity. Miles of Pahoa, Hawaii, writes about communications and computers.
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