Drum Scanners
Drum scanners are very specialized scanners obtained by the distribution industry for images that require great detailing. They use a sophisticated technology known as PMT (photomultiplier tubes), making them appropriate for mass volumes of scanning, which require superior image quality.
Drum scanners imprison image information using photomultiplier tubes (PMT) technology unlike the charged coupled mechanism used in flatbed scanners and film scanners. In the drum scanner the deep originals are mounted to an acrylic cylinder, the scanner drum, which rotates at high speed while it passes the entity being scanned in front of precision optics that deliver image details to the PMT’s. In most current colour drum scanners 3 matched PMT’s are found in use, which read red, blue and green light correspondingly. In drum scanner illumination from the creative artwork is split into separate red, blue and green beams in the optical bench of the scanner making the digital picture more accurate.
The well-organized and by far the most luxurious scanners are the drum scanners. These are used primarily in the distribution industry to digitize the descriptions that appear in books and magazines and are printed on high-quality printing presses.
The need for drum scanners is rising regardless of the enhancement in quality in flatbed scanners.
Flatbed Scanner
An additional form of scanner is the flatbed scanner. A flatbed scanner is typically made of a glass pane, which is enlightened with a bright light found underneath, and a touching optical CCD or CIS array. In the flatbed scanner images to be scanned are located face down on the glass and the sensor and light source move crossways the glass pane reading the entire area.
The flatbed scanner is the copier's flanking cousin. Just as with the copier, you position an image or article on the glass scanning plane, and it remains in place while a mechanically driven scan head passes beneath it. Flatbed scanners provide a much steadier scan than can be produced by either handheld or sheet fed scanners.
Reflective flatbed scanners are unable to scan crystal clear objects such as slide or negatives, however, unless they are equipped with a clearness adapter. A transparency adapter allows the scanner to shine light throughout the film. Among a transparency adapter a flatbed can scan slides and negatives. Generally speaking, the feature of such scans is not as good as those from devoted film scanners or drum scanners. Some higher end flatbed scanners do a very safe job on films, however. For example, Epson has a number of higher end units such as the V750 that do a fine job on films,
Flatbed scanners can be extremely reasonably priced, even with a transparency adapter.
Film Scanners
Film scanners are devoted transmissive scanners prepared to scan film strips and mounted slides (negatives and positives). Film scanners have optics and electronics exclusively catered to scanning film. Because of this interest, film scanners attain improved results when scanning film than flatbed scanners. Some film scanners include feeder accessories that can make doing many scans easier and faster. Obtaining an automatic feeder is extremely helpful for more widespread scanning work, such as a large slide collection. Only a few models of film scanners have this capability, and it is usually a fairly expensive optional attachment. Film scanners are relatively easy to maneuver as well.
Some scanners, such as the Nikon 5000 ED, are able to scan only smaller arrangement of films, such as 35mm and APS. Other types of scanners are used for superior film formats, such as 120 medium arrangement films (in addition to 35mm and other smaller formats). An example of such an average format film scanner is the Nikon 9000 ED. Overall; film scanners are less supple than flatbed scanners, which are able to scan a wider diversity of film formats.
Film scanners are moderately priced, from $400 to $1500
The table below summarizes a few of the key variations among flatbed, film and drum scanners.
Drum scanners are very specialized scanners obtained by the distribution industry for images that require great detailing. They use a sophisticated technology known as PMT (photomultiplier tubes), making them appropriate for mass volumes of scanning, which require superior image quality.
Drum scanners imprison image information using photomultiplier tubes (PMT) technology unlike the charged coupled mechanism used in flatbed scanners and film scanners. In the drum scanner the deep originals are mounted to an acrylic cylinder, the scanner drum, which rotates at high speed while it passes the entity being scanned in front of precision optics that deliver image details to the PMT’s. In most current colour drum scanners 3 matched PMT’s are found in use, which read red, blue and green light correspondingly. In drum scanner illumination from the creative artwork is split into separate red, blue and green beams in the optical bench of the scanner making the digital picture more accurate.
The well-organized and by far the most luxurious scanners are the drum scanners. These are used primarily in the distribution industry to digitize the descriptions that appear in books and magazines and are printed on high-quality printing presses.
The need for drum scanners is rising regardless of the enhancement in quality in flatbed scanners.
Flatbed Scanner
An additional form of scanner is the flatbed scanner. A flatbed scanner is typically made of a glass pane, which is enlightened with a bright light found underneath, and a touching optical CCD or CIS array. In the flatbed scanner images to be scanned are located face down on the glass and the sensor and light source move crossways the glass pane reading the entire area.
The flatbed scanner is the copier's flanking cousin. Just as with the copier, you position an image or article on the glass scanning plane, and it remains in place while a mechanically driven scan head passes beneath it. Flatbed scanners provide a much steadier scan than can be produced by either handheld or sheet fed scanners.
Reflective flatbed scanners are unable to scan crystal clear objects such as slide or negatives, however, unless they are equipped with a clearness adapter. A transparency adapter allows the scanner to shine light throughout the film. Among a transparency adapter a flatbed can scan slides and negatives. Generally speaking, the feature of such scans is not as good as those from devoted film scanners or drum scanners. Some higher end flatbed scanners do a very safe job on films, however. For example, Epson has a number of higher end units such as the V750 that do a fine job on films,
Flatbed scanners can be extremely reasonably priced, even with a transparency adapter.
Film Scanners
Film scanners are devoted transmissive scanners prepared to scan film strips and mounted slides (negatives and positives). Film scanners have optics and electronics exclusively catered to scanning film. Because of this interest, film scanners attain improved results when scanning film than flatbed scanners. Some film scanners include feeder accessories that can make doing many scans easier and faster. Obtaining an automatic feeder is extremely helpful for more widespread scanning work, such as a large slide collection. Only a few models of film scanners have this capability, and it is usually a fairly expensive optional attachment. Film scanners are relatively easy to maneuver as well.
Some scanners, such as the Nikon 5000 ED, are able to scan only smaller arrangement of films, such as 35mm and APS. Other types of scanners are used for superior film formats, such as 120 medium arrangement films (in addition to 35mm and other smaller formats). An example of such an average format film scanner is the Nikon 9000 ED. Overall; film scanners are less supple than flatbed scanners, which are able to scan a wider diversity of film formats.
Film scanners are moderately priced, from $400 to $1500
The table below summarizes a few of the key variations among flatbed, film and drum scanners.
