发明名称 |
ANORDNING FOER KONTINUERLIGT MAETNING AV ETT PAPPERSARKS FORMNINGSTILLSTAOND. |
摘要 |
This invention relates to an apparatus for continuously measuring the state of formation of a sheet of paper which comprises: -means for moving a sheet of paper at a predetermined speed; -a light source directing a laser beam through said sheet; -a means for picking up the laser light transmitted, then for converting it into an electrical signal; -electronic processing means for separating this electrical signal into two components; -means for calculating from these components the index I representative of the state of formation; -a means for displaying the value of this index I; wherein the laser beam is polarized, and the apparatus further comprises, between the sheet and the means for picking up the laser light transmitted, a polarizer of which the axis of polarization is perpendicular to the axis of polarization of the laser beam transmitted. |
申请公布号 |
FI852793(L) |
申请公布日期 |
1986.01.18 |
申请号 |
FI19850002793 |
申请日期 |
1985.07.16 |
申请人 |
CENTRE TECHNIQUE DE L'INDUSTRIE DES PAPIERS, CARTONS ET/CELLULOSES |
发明人 |
SABATER, JACQUES;BAUDUIN, SERGE |
分类号 |
D21F7/00;D21G9/00;G01B11/30;G01N21/86;G01N21/88;G01N21/89;G01N21/892 |
主分类号 |
D21F7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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