Increasing the scanning resolution will limit the maximum possible scanning area. Optical resolution is a measure of maximum hardware sampling resolution, based on ISO 14473 standard. Scan speed is measured using a USB 3.0 interface using the included USB cable on a PC, and may vary depending on system configuration, interface, software, scan mode settings and document size etc. Scan speed indicates the time measured between pressing the scan button of the scanner driver and when the on-screen status display turns off. Color photo scan speed: (Color 4"圆" 300 dpi) is measured with ISO/JIS SCID No.2.
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