| 摘要 |
<p>A method and a device for detecting the hue and density of a multicolor sheet, the method comprising the steps of linearly radiating white light (3) from a light source (2) onto the surface of a printing sheet (1) multicolored while running in an offset printing machine (100) over the lateral length thereof, dispersing the light at each point of the linear light (4) provided as the reflected light of the radiated white light in order by reflection, diffraction, and reflection in a spectroscope (5) to distribute the light into light spectra spread and dispersed generally at the same rate in a vertical or generally vertical direction relative to the light path thereof, transforming the distributed light spectra into electric signals by using a CCD camera (6) and transferring the electric signals to a calculation device (7), and calculating the electric signals by the calculation device (7).</p> |
