Description:
Drum scanners capture image information with photomultiplier tubes (PMT), rather than the charge-coupled device (CCD) arrays found in flatbed scanners and inexpensive film scanners. Reflective and transmissive originals are mounted on an acrylic cylinder, the scanner drum, which rotates at high speed while it passes the object being scanned in front of precision optics that deliver image informati
Photo taken on: May 17th, 2009

Keywords:
acrylic arrays black capture ccd center charge cmyk coupled cyan cylinder device dia digitalizing dot drum extension film flatbed focus frame hardware high highlight holder image indoor inexpensive lime machine magenta metal mounted noise object office offset photo photograph photomultiplier pictures positive press print reflective reproducing rotates scan scanner scanners scanning shadow shine shop shots slide speed transmissive tubes white yellow

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