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Avoid location subject to open flame, dust, or direct sunlight. If it is installed near a window, hang a curtain to block direct sunlight. The room should be well ventilated.

Install on a sturdy and level desk, etc. Moving a scanner from a cold place to a warm place may cause condensation on the metal parts, resulting in a faulty operation. Give the scanner at least one hour to adjust Canon CanoScan D660U FAU the room temperature before unpacking. Unlocking the Scanning Unit The scanner is shipped with the scanning unit locked by the carriage lock to prevent a damage during transport. Unlock the scanning unit before using the scanner. Figure 2 Push the carriage lock to the "Unlock" position. Ensure to lock the scanning unit during transport. Refer to the "Getting Started" for details. For connecting the host computer's cables, refer to the manuals for the host computer.

Canon CanoScan D660U ScanGear Toolbox FAU driver download free (ver. 2.­5.­1)

Scanning a Document 1 Open the document cover. Clean the document glass or document cover following the steps below. Outline of Electrical System Functions The scanner functions are divided into the following three main systems. Optical system The optical system Canon CanoScan D660U FAU a document by the scanning lamp and focuses the reflected light from the document on the CCD by mirrors, a lens Canon CanoScan D660U FAU a VAROS unit. Image processing system The image processing system converts the analog image signal focused on the CCD into digital data and performs image processing.

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Control system The control system controls the interface with the host computer and the whole operation of the scanner. The device driver installed in the host computer includes a control program, Canon CanoScan D660U FAU functions as CPU. Basic Sequences The basic sequences of the scanner is divided into the power ON sequence, calibration sequence, and document scanning sequence. When the scanner is powered ON, the scanning unit automatically moves to the home position. This is also a scan start position. When the scanning lamp lights, the control program reads the light reflected from the white calibration plate with the CCD, and checks if the light intensity into each CCD of red, green, and blue reaches the standard value.

If the light intensity is below the standard value, the Canon CanoScan D660U FAU program continues the test for up to 30 seconds. Outline When scanning are flective document, the scanning lamp in the scanning unit exposes the document and focuses the reflected light from the document on the CCD. When scanning Canon CanoScan D660U FAU film at dpi or higher using FAU, FAU lamp built in the document cover exposes the film, and optical axis is shifted by a half pixel in the horizontal scanning direction by means of VAROS unit, and the images before and after the optical axis is shifted are composed by the host computer.

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Refraction glass is placed between the CCD and lens, and the direction of the refraction glass is moved to change the optical axis thus changing the scanning position. When the host computer commands dpi or higher resolution to scan a film using FAU, two image data before and after the direction of the refraction glass is moved are composed to make double image data. The drive motor runs by the drive signal sent from the ASIC and drives the scanning unit via the belt. The refraction glass is equipped with Canon CanoScan D660U FAU solenoid to control the direction of the refraction glass. Firstly scans before moving the direction of the refraction glass at dpi in the horizontal scanning direction and dpi in the vertical scanning direction. The scanned image data is stored in the host computer as a temporary data.

Changing the direction of the refraction glass shifts the optical Canon CanoScan D660U FAU from the CCD to a film by a half pixel. Therefore, the 2nd scan is performed between the pixels of the 1st scan. When the ASIC commands between dpi and dpi, scan is performed at dpi, then the host computer performs resolution conversion to output the image data conforming to the command by the ASIC. The scanning lamp exposure control is performed by scanning white calibration plate which is placed outside the image area to feedback on the output. Outline The image processing system converts analog image signals read by the CCD into digital data, performs various image processing, then outputs the data to the host computer Canon CanoScan D660U FAU USB port.

Shading correction and gamma correction are performed by the driver software instead of the scanner function. Resolution conversion To host computer Figure B. Image Processing Functions 1. The scanner uses a 3 line CCD to read the color signals.

The 3 line CCD is a single chip photoelectric conversion device which consists of 3 lines of several thousand photosensitive devices, each several microns square, reading for red, green, and blue analog image signals, and of a scanning circuit. Blue photosensitive section Green photosensitive section Red photosensitive section Figure 2. Shading correction When the CCD reads a document of even density, the image signal corresponding to each pixel is Canon CanoScan D660U FAU uniform for the following reasons. These variations are corrected by the shading correction. Calibration data is used as standard density data when scanning a document.

Scanned image data is compared to the standard density data for the image data correction. Free Download Canon Canon CanoScan D660U FAU DU FAU Toolbox (Digital Camera / Webcam / Camcorder). View and Download Canon CANOSCAN DU service manual online. Film Adapter Unit (FAU) is bult in the scanner for scanning negative and positive films.

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