专利汇可以提供Multicolor reading device and multicolor facsimile equipment专利检索,专利查询,专利分析的服务。并且PURPOSE: To stably decide a color while the generation of an error in a color separation circuit is prevented even if light quantity changes during reading of an original by using the change of the light quantity as a color separation parameter.
CONSTITUTION: The color 92 for the reference of color separation is added outside an original reading area on a white plate 91. A facsimile equipment reads an original 90 when the original 90 is inserted, but it reads the white plate 91 while the original 90 is not present, and it generates a shading waveform, etc. According to how the read level of the reference color 92 changes by the change between illumination by only a fluorescent lamp and the illumination by the fluorescent lamp and an LED, the respective light quantities are detected. A light quantity ratio detecting part 12 calculates the light quantity ratio between the fluorescent lamp 1 and the LED 2 from the light quantity by the illumination of only the fluorescent lamp 1 and the light quantity by the illumination of both the fluorescent lamp 1 and the LED 2, and a color separation part 9 separates the color signals of red and black from data from a distortion correcting part 8 and the result of the light quantity ratio detecting part 12.
COPYRIGHT: (C)1989,JPO&Japio,下面是Multicolor reading device and multicolor facsimile equipment专利的具体信息内容。
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