Glossary

ADF (Automatic Document Feeder) — An ADF allows you to place a stack of documents in the feeder so that many documents can be processed at the same time, rather than manually feeding in each page one at a time.

Barcode recognition — The ability to recognize and interpret a barcode on a document, usually for indexing purposes. Examples of information that might be barcoded are things like student ID and document type. This ability usually is part of the scanning software, and not the scanner itself.

CaptureNow — CaptureNow is software from Perceptive Software that is required to scan documents directly into ImageNow. There are several types of CaptureNow with different capabilities and for different scanners. CaptureNow Adrenaline is most commonly used for KU Lawrence campus.

dpi (dots per inch) — This is a measure of the quality, or resolution of the scan. The more dots per inch, the more detail in the scan. This also makes the document file size larger, which can impact the time it takes to retrieve documents from the server, and load-and-display them on a monitor. Note that most monitors have a resolution between 70 - 100 dpi, while most scanners are capable of 300 – 600 dpi.

Duplex — A duplex scanner is able to scan both sides of a sheet of paper. See also Simplex.

ipm (images per minute) — This is a manufacturer rating that describes the maximum speed of a scanner when scanning duplex (both sides of a page at the same time). Simplex speed is usually rated in terms of pages per minute (ppm).

ISIS (Image and Scanner Interface Specification) — ISIS is an industry standard or protocol that specifies how scanners and software communicate.

JPEG (Joint Photographic Experts Group) — This is an industry-standard color/graphics file format that is often used for storing photographs and graphics. JPEG format is compressed to reduce file size while still maintaining most of the detail and color of the original picture. However, the TIFF or PDF format is often preferred for storing text documents, or documents that combine both text and graphics.

PDF (Portable Document Format) — PDF is a proprietary file format from Adobe (maker of Acrobat Reader) that captures all the visual elements of a document. It is platform independent. PDF files are small and retain the appearance of the original image. PDF files, along with TIFF files, are the most common format used to store documents in imaging systems.

ppm (pages per minute) — This is a manufacturer rating that describes the maximum speed of a scanner when scanning simplex (one side of a page). Duplex speed is usually rated in terms of images per minute (ipm).

Resolution — See dpi

SCSI (Small Computer System Interface) — SCSI is an industry standard interface for transmitting data between computers and peripheral devices, such as a scanner. Some scanners can use only a SCSI interface, while others can use only a USB interface. Some scanners allow either a SCSI interface or a USB interface. In those cases the interface used is usually determined by the CaptureNow software chosen. A SCSI interface often provides higher performance versus a USB interface.

Simplex — A simplex scanner can only scan one side of a sheet of paper. See also Duplex.

TIFF (Tagged Image File Format) — This is an industry-standard file format that defines an image as an array of pixels with numerical values. TIFF files can hold color, grayscale, or black and white images. Files size depends on the resolution at which the original document was scanned. TIFF files, along with PDF files, are the most common way that documents are stored in imaging systems. TIFF is the standard format for storing documents in ImageNow.

USB (Universal Serial Bus) — USB is an industry standard interface for transmitting data between computers and peripheral devices, such as a scanner. USB is beginning to replace the older varieties of serial and parallel ports. Some scanners can use only a USB interface, while others use only a SCSU interface. Some scanners allow for either a USB or a SCSI interface. In those cases the interface used is usually determined by the CaptureNow software chosen. A USB interface may provide lower performance than a SCSI interface.

VRS (Virtual Rescan) — Virtual Rescan is a product of the Kofax company that provides extended software features for your scanner. It allows you to scan “difficult” documents, such as those with colored backgrounds and watermarks, documents that would be difficult to capture with other scanning software such as ISIS. CaptureNow with VRS is available for many of the scanners recommended by Perceptive Software.


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