每一次PC Magazine Labs测试扫描仪时,我们都会确定一个表示扫描仪最大光学分辨率的最佳方式。制造商喜欢用600×1,200这样的数字来作为扫描仪分辨率的标称,但是其中较高的数字很容易引起误解。 光学分辨率是由扫描仪的传感器(通常是一组CCD阵列)以及传感器中的单元数量决定的。例如,一台600×1,200dpi(点每英寸)的扫描仪每英寸有600个单元。但是传感器一次只能读取一个扫描行。第二个数字是机械分辨率,它指的是步进电机在平板上移动时所走的步数。因 Every time PC Magazine Labs tests the scanner, we determine the best way to represent the maximum optical resolution of the scanner. Manufacturers like to use 600 × 1,200 such as the nominal number of the scanner resolution, but the higher the number of which is very easy to cause misunderstandings. The optical resolution is determined by the scanner’s sensor (usually a set of CCD arrays) and the number of cells in the sensor. For example, a 600 x 1,200 dpi scanner has 600 cells per inch. However, the sensor can only read one scan line at a time. The second number is the mechanical resolution, which refers to the number of steps taken by the stepper motor as it moves across the plate. because