drum scanner

(redirected from image scanner)
Also found in: Dictionary, Thesaurus, Wikipedia.

drum scanner

A type of scanner used to capture the highest resolution from an image. Photographs and transparencies are taped, clamped or fitted into a clear cylinder (drum) that is spun at speeds exceeding 1,000 RPM during the scanning operation. A light source that focuses on one pixel is beamed onto the drum and moves down the drum a line at a time.

For transparencies, light is directed from the center of the cylinder. For opaque items, a reflective light source is used. Mirrors filter out the RGB values and send them to the drum scanner's photomultiplier tube (PMT), which is more sensitive than the CCDs used in flatbed and sheet-fed scanners and can produce resolutions exceeding 10,000 dpi. If one PMT is used, three passes across the image are required. When three PMTs are used, a faster single-pass scan is performed. Contrast with flatbed scanner, sheet-fed scanner and handheld scanner.

Drum Scanner
ICG's model 370 provides 12,000 dpi of optical resolution for service bureau quality scanning. Drum scanners provide the ultimate in scanning quality and resolution and are widely used for commercial graphics production as well as applications that turn photos into posters and wall-sized images. (Image courtesy of ICG North America.)

Mounting Slides and Transparencies
Transparencies can be taped or clipped onto the drum. This QuickMount system from ICG uses cassettes built especially for easy insertion of 35mm slides, 2 1/4" and 4x5" transparencies. (Image courtesy of ICG North America.)
References in periodicals archive ?
To expedite the scanning process, the IS760D Image Scanner supports One-Pass Duplex Scanning technology, which enables both sides of a document to be captured at the same time.
The IS760/IS760D Image Scanner Series is a prime example of how Ricoh continuously sets the standard in creating efficient document management solutions that help customers remain productive," said Hede Nonaka, vice president of marketing, Ricoh Corporation.
The new Canon CanoScan 9000F Color Image Scanner provides users with the ultimate photo archiving solution with a maximum color resolution of 9600 x 9600 dpi1(Film) and Auto Scan Mode which automatically adjusts settings by detecting what is being scanned.
Additionally, the color image scanner utilizes a white LEDwhich eliminates warm-up time2 while decreasing power consumption.
The CanoScan 4400F Color Image Scanner is the scanner for the user who wants the best of both worlds, the harmonious balance of performance and value pricing.
Using a Contact Image Sensor (CIS), and new drive system designs, the Canon CanoScan LiDE90 Color Image Scanner is considered to be one of the world's thinnest scanners, and the smallest ever in the Canon LiDE scanner series.
The CanoScan 5600F Color Image Scanner provides consumers with a solution for all photo archiving needs with the ability to scan up to six frames of a 35mm filmstrip or four 35mm slides at a maximum optical resolution of 4800 x 9600 dots-per-inch (dpi).
Consumers looking to archive old family snapshots or just keep better track of their household bills and documents need look no further than the new Canon CanoScan(R) LiDE 25 and CanoScan LiDE 60 Color Image Scanners.
The new LiDE 500F Color Image Scanner furthers this commitment and taps into the heart of what consumers need, bridging high quality with futuristic style.
Additionally, since both color image scanners utilize USB-power, they have been qualified as meeting the Energy StarA energy efficiency criteria.
a leader in digital imaging, today announced the addition of two new CanoScan LiDE Color Image Scanners - the LiDE 210 and LiDE 110 scanners.
Addmaster is a leading manufacturer of bank peripherals: Receipt and validation printers, check readers (MICR Readers) and check image scanners.