JP2007232472A5 - - Google Patents

Claims (8)

Light is irradiated to the placed powder onto a planar substrate, scattered by the powder, the intensity of fluorescence emission from the diffraction or reflected light or the powder was measured, previously prepared and this measured value basis weight measurement method of the powder, characterized by measuring the basis weight of the powder by comparing with a calibration value had been. A light irradiating means is provided on one surface side of the planar substrate, and a light receiving means is provided at a position on the surface facing the irradiating means and deviating from the optical axis of the irradiation light from the irradiating means. Item 12. A method for measuring a basis weight of a powder according to Item 1. The light irradiation means and the light receiving means are provided on one surface side of the planar base material, and the light receiving means is provided at a position deviating from the regular reflection axis of the irradiation light from the light irradiation means. Method for measuring the basis weight of powder. In data obtained by scanning a calibration plate to entire width of the measurement area before measurement position of the planar substrate, according to claim 1 to 3, characterized in that to correct the intensity distribution of each of the widthwise position A method for measuring a basis weight of a powder according to any one of the above. The light quantity change of the reference | standard board provided in the area | region which the said light-receiving means receives at the time of a measurement is detected, and a measured value is correct | amended with time by the said light quantity change, The measurement value in any one of Claims 1-4 characterized by the above-mentioned. Powder basis weight measurement method. Based on the data obtained by the method according to any one of claims 1 to 5 weight per unit area control method of the powder and to control the conveying speed of the supply amount or spray volume or planar substrate of the powder . A planar substrate for mounting a powder, the light is irradiated to the placed powder on the plane substrate, by the powder scattering, fluorescence emission from the diffraction or reflected light or the powder measuring means of the light intensity for measuring the intensity, the basis weight of the powder, characterized in that it comprises a data processing means for measuring the basis weight of the powder by comparison with calibration values prepared in advance and the measured value measuring device. Conveying means for conveying the planar substrate, and winding means for winding the flat surface substrate, a supply means for supplying a powder, spraying means for spraying a powder that is supplied from the supply means onto the planar substrate powder spraying device with bets, and irradiating means on one side of the planar substrate, scattered from the powder of the light irradiated to the powder from the irradiation unit, diffraction or reflection or the powder by irradiation with light A light intensity measuring means having a light receiving means for measuring the light intensity of fluorescence emitted from the body, and a basis weight is calculated by comparing a measured value from the light intensity measuring means with a calibration value prepared in advance. And a data processing unit for measuring the basis weight of the powder.