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    • 96. 发明公开
    • Image forming-machine
    • 成像机
    • EP0615170A3
    • 1995-08-09
    • EP94108710.8
    • 1990-06-27
    • MITA INDUSTRIAL CO. LTD.
    • Oda, Kenji, c/o MITA INDUSTRIAL Co. Ltd.Tsutsui, Eiji, c/o MITA INDUSTRIAL Co. Ltd.Eki, Makoto, c/o MITA INDUSTRIAL Co. Ltd.Maeshima,Masanobu, c/o MITA INDUSTRIAL Co.Ltd.
    • G03G15/00
    • G03G21/1817G03G15/0896G03G21/1825G03G21/1853G03G2215/00987G03G2221/1606G03G2221/1609G03G2221/1624G03G2221/163G03G2221/1648G03G2221/1651G03G2221/1654G03G2221/1678G03G2221/1861G03G2221/1876
    • An image-forming machine comprises a main body (2) and a process unit (8) detachably mounted on the main body. A supporting-guiding means (416) is mounted in the main body (2) for moving between an elevated position and a lowered position and the process unit (8) is comprised of a first unit (102) and a second unit (104) separably combined with each other. The first unit (102) includes a first frame member (105) which can be mounted on and detached from the supporting-guiding means (416) when the supporting-guiding means (416) is at the elevated position, and a developing device (18) mounted on the first frame member (105) movably over a predetermined direction. The second unit (104) includes a second frame (107) separably combined with the first frame member (105) of the first unit (102) and a rotating drum (12) mounted rotatably on the second frame member (107), a photosensitive member being disposed on the surface of the rotating drum (12); when the supporting guiding means (416) is moved to the lowered position from the elevated position, a predetermined site of the developing device (18) is elastically depressed to a predetermined site of the second unit (104), whereby the developing device (18) and the rotating drum (12) are positioned in a predetermined relationship.
    • 图像形成机器包括主体(2)和可拆卸地安装在主体上的处理单元(8)。 支撑导向装置(416)安装在主体(2)中,用于在升高位置和降低位置之间移动,并且处理单元(8)由第一单元(102)和第二单元(104)组成, 可分离地彼此组合。 第一单元(102)包括第一框架构件(105)和显影装置(105),当支撑引导装置(416)处于升高位置时,该第一框架构件能够安装在支撑引导装置(416)上和从支撑引导装置 安装在所述第一框架构件(105)上,可在预定方向上移动。 第二单元(104)包括可分离地与第一单元(102)的第一框架构件(105)组合的第二框架(107)和可旋转地安装在第二框架构件(107)上的旋转鼓(12),光敏 构件设置在旋转鼓(12)的表面上; 当支撑引导装置(416)从升高位置移动到降低位置时,显影装置(18)的预定位置被弹性地压下到第二单元(104)的预定位置,由此显影装置(18 )和旋转鼓(12)以预定关系定位。
    • 97. 发明公开
    • Image processing method and apparatus
    • 图像处理方法和装置
    • EP0663758A2
    • 1995-07-19
    • EP95300182.3
    • 1995-01-12
    • MITA INDUSTRIAL CO. LTD.
    • Fujita, Hiroyuki, c/o Mita Industrial Co., Ltd.Hikosaka, Ariyoshi, c/o Mita Industrial Co., Ltd.Kajitani, Tetsuji, c/o Mita Industrial Co., Ltd.Hirano, Hidemitsu, c/o Mita Industrial Co., Ltd.Okumura, Takuji, c/o Mita Industrial Co., Ltd.Matsushita, Tsukasa, c/o Mita Industrial Co., Ltd.Azumai, HideoIwatsubo, Satoshi, Room E of Terrace Flora
    • H04N1/40
    • H04N1/40062
    • In an image processing method for processing an image including a plurality of pixels each having density data, a quadratic differential value is first calculated, based on differences in the density data between an object pixel and respective peripheral pixels around the object pixel. The square value SS of the quadratic differential value S and the sum ΣSS obtained by adding up the square values SS of quadratic differential values for continuous five pixels are employed as determination values (step n1). The square sum ΣSS is compared with respective threshold values a, b and d, and the square value SS is compared with respective threshold values c, e and f (steps n2 to n6 and n8). Based on these comparison results, it is judged which image area among a character image area, gray-scale image area and dotted image area the object pixel belongs to. As for the image area judgement concerning the dotted image area, the final judgement that the object pixel belongs to the dotted image area is made only when nine continuous pixels including the object pixel are all judged to belong to the dotted image area. Since the square values SS and square sum ΣSS take only a positive value, the threshold values are set only in a positive range, and hence the image processing can be simplified. Further, by employing the square sum ΣSS, the states of the peripheral pixels can be taken into consideration for the image area judgement.
    • 在用于处理包括多个具有浓度数据的像素的图像的图像处理方法中,首先基于对象像素与对象像素周围的各周边像素之间的浓度数据的差异来计算二次微分值。 采用二次微分值S的平方值SS和通过将连续五个像素的二次微分值的平方值SS相加而获得的总和ΣSS作为确定值(步骤n1)。 将平方和ΣSS与相应的阈值a,b和d进行比较,并将平方值SS与相应的阈值c,e和f进行比较(步骤n2至n6和n8)。 基于这些比较结果,判断对象像素属于的字符图像区域,灰度图像区域和点图像区域中的哪个图像区域。 至于关于虚线图像区域的图像区域判断,仅当包括对象像素的九个连续像素全部被判断为属于虚线图像区域时才作出目标像素属于虚线图像区域的最终判断。 由于平方值SS和平方和ΣSS仅取正值,所以阈值仅设定在正范围内,因此可以简化图像处理。 此外,通过使用平方和ΣSS,可以考虑周边像素的状态用于图像区域判断。