| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheet thickness measuring apparatus which facilitates changing its measurement area, even during on-line measurements. SOLUTION: A sheet physical quantity measuring apparatus detects the amount of transmission of radiation 2 emitted to a sheet-like object 3 from a radiation source 1 with a radiation detector 14, and measures a physical quantity of the sheet-like object 3. The radiation detector 14 is composed of one-dimensional or two-dimensional array elements, and the apparatus is provided with a selection means 6 for selecting a signal output from an element corresponding to a measuring region 7 of the sheet-like object 3 from among the array elements. COPYRIGHT: (C)2009,JPO&INPIT |
