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    • 9. 发明授权
    • Packaging quality control method and apparatus
    • 包装质量控制方法和装置
    • US4553847A
    • 1985-11-19
    • US444079
    • 1982-11-24
    • Gunter Lang
    • Gunter Lang
    • A24C5/34G01N21/84G01N21/55
    • A24C5/3412
    • The quality of a product, for example the degree of filling of cigarette papers, is non-destructively tested using reflectivity measurement. Compensation is provided for the effects of stray light in the measuring zone and the signals commensurate with the measurements performed on individual units of the object being tested are compared with the average of signals obtained through measurements performed on a preselected number of units of acceptable quality. The state of operability of the test apparatus may be self-checked during incremental periods between the testing of units.
    • 产品的质量,例如卷烟纸的填充程度,使用反射率测量进行非破坏性测试。 提供了对测量区域中杂散光的影响的补偿,并且将与被测试物体的各个单元执行的测量相称的信号与通过对可接受质量的预选单位进行的测量获得的信号的平均值进行比较。 测试装置的可操作性的状态可以在单元测试期间的增量期间进行自检。