HP 4101mfp manual Light-conversion process

Light-conversion process

When the charged couple device receives the reflected light, it photo-electrically converts the light to three analog signals (red-green-blue, or RGB). These three signals pass through an analog-to-digital converter, and the resulting digital signals are sent to the scanner controller board. The scanner controller board sends the digital signals to the copy processor board, which initiates output through the base printer.

Note	If the source document is manually placed on the glass, the scanning process is the same, except
	for document transportation.

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