E-SCAN: Scanner Glossary or Terms Used


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	Many models have options for extending the standard warranty. What are the benefits? Cost saving - extended warranties can be less than the cost of one service repair Time saving - if a service is required there can be less down time, As some models provide on-site service within a time period Maximise your investment and visit our Warranty section to see what options are available for your preferred scanner.

Glossary of Scanner Terms

ADF Automatic Document Feeder. The capacity of an ADF is measured is the number of standard thickness sheets of paper ie 50, or in thickness of the paper stack regardless of the paper stock, ie 10mm

Bit Is a binary digit, taking a value of either 0 or 1. For example in a black and white image where it is one bit per pixel. Each pixel would represent either black or white.

CCD Charge-coupled device. "CCD" refers to the way that the image signal is read out from the chip. Under the control of an external circuit, each capacitor can transfer its electric charge to one or another of its neighbors.

CIS Contact Image Sensors are a relatively recent technological innovation in the field of optical flatbed scanners that are rapidly replacing CCDs in low power and portable applications. As the name implies, CISs place the image sensor in near direct contact with the object to be scanned in contrast to using mirrors to bounce light to a stationary sensor, as is the case in conventional CCD scanners.

CMOS Complementary metal-oxide-semiconductor or sometimes referred to as complementary-symmetry metal-oxide-semiconductor (or COS-MOS). CMOS technology is used for a wide variety of analog circuits including image sensors.

DPI Dots per Inch. Refer Resolution

Duplex Scans both sides of the document at the same time

Flatbed A type of scanner where the document is placed on a glass window for scanning. This style of scanner is useful for scanning items that are irregularly shaped such as books.

Grayscale Images only uses shades of grey from black through to white.

GSM Grams per square metre or grammage. Is a measure of paper area density. The thicker the paper the higher the GSM.

IPM Images Per Minute

PerfectPage A suite of image processing technologies that maximises the quality of digital images in Kodak scanners.It corrects for color, brightness, contrast, readability, orientation and background so scanned images may actually look better than the original.
Perfect Page Matrix

PPM Pages Per Minute

Resolution Measured in Dots per inch (DPI). The DPI value tends to correlate with image resolution, but is related only indirectly. DPI is measured by the number of individual dots that can be placed within the span of one linear inch (2.54 cm.)

Simplex Scans one side of a document at a time