IBM-PC/AT interchangeable personal computer is adopted in the host computer and Windows2000 is adopted in OS.
The image reader is a simple, cheap system with a general-purpose scanner.

The screen is designed by decrease a set parameter as much as possible so that everyone may treat easily, and by consider operative-ness.

A watching inspection and a very good correlation are obtained by the automatic brightness correction of back ground and impurities . (fine quality of our company paper standard sample: correlation coefficient r=0.99)

The measurement processed at high speed can be done about 11 seconds/A4 at measuring time

The measurement data conforms to JIS P 8145. Preservation of measurement result in file. The slit is output. Moreover, the input image can be preserved .

A position and a real image of impurities in the sample can observe watching on the preview screen.