drum scanner

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Related to drum scanner: Film scanner

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 ?
Visual Difference between Pneumoconiosis Radiographs Obtained with CCD Scanner and Drum Scanner
When ANPA/TEC returned to Atlanta recently, the CCD film scanners were still very much in evidence, but the hot new devices dotting various vendors' exhibits represented the new crop of tabletop drum scanners.
The migration of the drum scanner to the desktop, once solely the reserve of film and flatbed scanners, is a relatively recent development.
This eliminates the visual noise and distortion caused by glass, gel or tape commonly used with conventional drum scanners and flatbed scanners.
UMAX scanners combined with the PowerColor Software offer a solution providing sophisticated color correction and control features, rivaling the capabilities of drum scanners.
R), (NASDAQ:SCNG), a pioneer and leader in large format scanning and imaging software, was awarded a $400,000 contract to provide a leading United States manufacturer with three 70-inch Cadence Series drum scanners.
While flatbed scanners suffice for most educational applications, some demand the ultra-high resolutions of drum scanners.
Many of the editor tools have legacy technology that has evolved from the company's extensive experience with early drum scanners, including some of the most advanced unsharp masking techniques available.
DESKTOP SCANNERS ARE changing the landscape of graphic arts production by displacing large drum scanners and moving prepress composition power closer to designers and publishers, according to A.
Intellihance Pro automatically analyzes and corrects images from any source, including digital cameras, flatbed and drum scanners, or original digital artwork.
Testing in Arlington was performed on the recording half of what Kirkhart described as a magazine version of "old-technology" Ricoh drum scanners.
based Imacon, maker of reproduction quality drum scanners targeted at the professional graphic arts and photography markets.