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    • 9. 发明专利
    • Image forming device
    • 图像形成装置
    • JPH11272024A
    • 1999-10-08
    • JP37103798
    • 1998-12-25
    • Canon Incキヤノン株式会社
    • NAKANO MASAO
    • B41J2/52B41J2/44G03G15/00H04N1/29H04N1/405
    • PROBLEM TO BE SOLVED: To obtain high gradient considering interference between pixels by performing image arithmetic operation considering interaction around the pixels in accordance with the size of the pixel constituting an electrostatic latent image.
      SOLUTION: An image reader 7 scans and reads an original placed on an original glass platen and converts image data into a digital electrical signal. After converting the inputted image data inputted from the reader 7 into a digital signal, an image data processor 8 converts the signal into an image signal showing gradation in proportion to image density so as to form electrostatic latent image data to be outputted to an exposure device 3. In such a case, the electrostatic latent image formed on a photoreceptor drum 1 is obtained by simulation, and an image forming pattern is corrected. The measured values of the average potential and the image density are improved by correcting the gradation of the contrast potential between the pixels without changing area gradient and without largely shifting the average contrast potential out of various patterns of simulation.
      COPYRIGHT: (C)1999,JPO
    • 要解决的问题:通过考虑根据构成静电潜像的像素的尺寸的像素周围的交互进行图像运算,获得考虑像素之间的干涉的高梯度。 解决方案:图像读取器7扫描并读取放置在原始玻璃压板上的原稿,并将图像数据转换为数字电信号。 在将从读取器7输入的输入图像数据转换为数字信号之后,图像数据处理器8将该信号转换成与图像浓度成比例的显示灰度的图像信号,以形成要被输出到曝光装置的静电潜像数据 在这种情况下,通过模拟获得形成在感光鼓1上的静电潜像,并校正图像形成图案。 平均电位和图像浓度的测量值通过校正像素之间的对比度电位的灰度而不改变区域梯度并且不会使平均对比度电位从各种模式模式中大大偏移而得到改善。