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    • 66. 发明授权
    • Method for the removal of scum
    • 去除浮渣的方法
    • US4160662A
    • 1979-07-10
    • US804530
    • 1977-06-08
    • Katsumi NagasakiYoshihiro InoueHiroyuki YamazakiAkifumi YanoTetsuo Momose
    • Katsumi NagasakiYoshihiro InoueHiroyuki YamazakiAkifumi YanoTetsuo Momose
    • B22D43/00B22D37/00F24F7/00F27D3/15C21B3/04
    • F27D3/1572
    • A method of removing slag or like scum from the surface of molten metal by suction. A tubular gaseous stream directed toward the surface of scum is formed, with its interior space communicating with a suction source such as an ejector or vacuum pump. The gaseous stream hampers the inflow of external air into the suction zone surrounded by the stream. On reaching the scum surface, the gaseous stream flows inward along the scum surface and is thereafter drawn toward the suction source, so that the stream acts to blow the scum radially inwardly of the stream and thereafter raises the scum from the surface of molten metal, thus permitting efficient removal of the scum with a relatively low suction. A scum removing apparatus for practicing this method includes a suction source, a suction head communicating with the suction source, and annular nozzle means provided around the suction head for forming a tubular gaseous stream flowing toward the surface of scum.
    • 通过抽吸从熔融金属表面除去渣渣等浮渣的方法。 形成指向浮渣表面的管状气流,其内部空间与诸如喷射器或真空泵的抽吸源连通。 气流阻碍外部空气流入由流包围的吸入区。 在到达浮渣表面时,气流沿着浮渣表面向内流动,然后被抽吸到抽吸源,使得流用于将流体径向向内吹入浮渣,然后从熔融金属表面升起浮渣, 从而允许以相对低的吸力有效地去除浮渣。 用于实施该方法的浮渣除去装置包括抽吸源,与抽吸源连通的抽吸头以及围绕抽吸头设置的环形喷嘴装置,用于形成朝向浮渣表面流动的管状气流。
    • 69. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US08970909B2
    • 2015-03-03
    • US13315502
    • 2011-12-09
    • Hiroyuki Yamazaki
    • Hiroyuki Yamazaki
    • H04N1/40H04N1/405H04N1/409H04N1/401H04N1/52H04N1/56
    • H04N1/4015H04N1/405
    • An image forming apparatus of this invention determines a correction amount for each image signal so as to correct banding as periodic density unevenness in a sub scanning direction, corrects each pixel value of an n-bit image signal in accordance with the correction amount, generates the first corrected image signal, and quantizes, for each pixel, the first corrected image signal into a second corrected image signal of m bits smaller than n bits. This image forming apparatus diffuses, in a main scanning direction, quantization errors at the time of quantization of the first corrected image signal into the second corrected image signal so as to cancel the quantization errors within a predetermined region including a plurality of continuous pixels on a main scanning line.
    • 本发明的图像形成装置确定每个图像信号的校正量,以便将条带校正作为副扫描方向上的周期性浓度不均匀性,根据校正量校正n位图像信号的每个像素值, 第一校正图像信号,并且将每个像素的第一校正图像信号量化为小于n位的m位的第二校正图像信号。 该图像形成装置在主扫描方向上将第一校正图像信号的量化时的量化误差扩散为第二校正图像信号,从而消除包含多个连续像素的预定区域内的量化误差 主扫描线。