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    • 2. 发明授权
    • Image reading apparatus, image forming apparatus and computer-readable medium
    • 图像读取装置,图像形成装置和计算机可读介质
    • US08693068B2
    • 2014-04-08
    • US13368669
    • 2012-02-08
    • Norikazu SakaiMitsuo Shimizu
    • Norikazu SakaiMitsuo Shimizu
    • H04N1/04
    • H04N1/4076H04N1/401H04N1/4097
    • An image reading apparatus includes a reading unit, an extraction unit and a generation unit. The reading unit outputs reference plate reading information. The extraction unit sets a pixel of the reference plate reading information as a notice pixel and repeatedly extracts one of the notice pixel as a target pixel until the number of the target pixels is more than a predetermined value when a ratio of a pixel value of the notice pixel to an initial value is more than a predetermined range. The generation unit generates correction information by substituting a pixel value of the target pixel with a correction value using the initial value when the extraction unit extracts all pixels of the reference plate reading information, and generates correction information by setting the pixel values of all the pixels as the initial value when the extraction unit does not extract all the pixels.
    • 图像读取装置包括读取单元,提取单元和生成单元。 读取单元输出参考板读取信息。 提取单元将参考板读取信息的像素设置为通知像素,并且当目标像素的数量大于预定值时,重复地将通知像素中的一个提取为目标像素,直到目标像素的数量大于预定值 通知像素到初始值大于预定范围。 当提取单元提取参考板读取信息的所有像素时,生成单元通过使用初始值用校正值代替目标像素的像素值来生成校正信息,并且通过设置所有像素的像素值来生成校正信息 作为提取单元未提取所有像素的初始值。
    • 3. 发明申请
    • Image reading apparatus, image forming apparatus and image reading method
    • 图像读取装置,图像形成装置和图像读取方法
    • US20050063021A1
    • 2005-03-24
    • US10786538
    • 2004-02-26
    • Norikazu Sakai
    • Norikazu Sakai
    • G06T1/00G03G15/00G06T1/60H04N1/028H04N1/04H04N1/053H04N1/10H04N1/19H04N1/192H04N1/40
    • H04N1/053H04N1/1017H04N1/192H04N2201/04748H04N2201/04763
    • An image reading apparatus that reads out an original document image synchronously with a frequency dispersion clock gained by modulating the frequency of a reference clock so as to be changed cyclically at a predetermined modulation period, comprising: a first signal generating section that generates a first signal which turns into assert state at a predetermined period; a second signal generating section that generates a second signal which turns into assert state at a period synchronous with the modulation period of the frequency dispersion clock; and a line scanning section that moves a scanning position on the original document image in an auxiliary scanning direction and scans the original document image in a main scanning direction perpendicular to the auxiliary scanning direction each time when both the first signal and the second signal turn to assert state and thereby reads the original document image and outputs an analog image signal.
    • 一种图像读取装置,其与通过调制参考时钟的频率而获得的频率分散时钟同步地读出原始文档图像,以便以预定的调制周期循环地改变,包括:第一信号生成部分,其生成第一信号 其在预定时段变成断言状态; 第二信号生成部,生成与频率分散时钟的调制周期同步的周期变为断言状态的第二信号; 以及线扫描部,其在辅助扫描方向上移动原稿图像上的扫描位置,并且每当第一信号和第二信号都转向时,沿与辅助扫描方向垂直的主扫描方向扫描原稿图像 断言状态,从而读取原稿图像并输出模拟图像信号。
    • 4. 发明授权
    • Image reading apparatus, image forming apparatus and image reading method
    • 图像读取装置,图像形成装置和图像读取方法
    • US07385732B2
    • 2008-06-10
    • US10786538
    • 2004-02-26
    • Norikazu Sakai
    • Norikazu Sakai
    • H04N1/38H04N1/40H04N1/04G06F1/00
    • H04N1/053H04N1/1017H04N1/192H04N2201/04748H04N2201/04763
    • An image reading apparatus that reads out an original document image synchronously with a frequency dispersion clock gained by modulating the frequency of a reference clock so as to be changed cyclically at a predetermined modulation period, comprising: a first signal generating section that generates a first signal which turns into assert state at a predetermined period; a second signal generating section that generates a second signal which turns into assert state at a period synchronous with the modulation period of the frequency dispersion clock; and a line scanning section that moves a scanning position on the original document image in an auxiliary scanning direction and scans the original document image in a main scanning direction perpendicular to the auxiliary scanning direction each time when both the first signal and the second signal turn to assert state and thereby reads the original document image and outputs an analog image signal.
    • 一种图像读取装置,其与通过调制参考时钟的频率而获得的频率分散时钟同步地读出原始文档图像,以便以预定的调制周期循环地改变,包括:第一信号生成部分,其生成第一信号 其在预定时段变成断言状态; 第二信号生成部,生成与频率分散时钟的调制周期同步的周期变为断言状态的第二信号; 以及线扫描部,其在辅助扫描方向上移动原稿图像上的扫描位置,并且每当第一信号和第二信号都转向时,沿与辅助扫描方向垂直的主扫描方向扫描原稿图像 断言状态,从而读取原稿图像并输出模拟图像信号。
    • 7. 发明授权
    • Image reading apparatus, image forming apparatus, and image reading method
    • 图像读取装置,图像形成装置和图像读取方法
    • US08730528B2
    • 2014-05-20
    • US13105531
    • 2011-05-11
    • Norikazu Sakai
    • Norikazu Sakai
    • H04N1/40
    • H04N1/401
    • An image reading apparatus includes an image reading unit that includes plural photoelectric conversion elements arranged therein and that reads an image using light, the light being reflected by a document transported to a read position and being received by the plural photoelectric conversion elements, a reference plate that is disposed at the read position, a correction data generating unit that generates correction data by modifying second reference data on the basis of a ratio of first reference data to the second reference data, the first reference data being obtained by the image reading unit using light reflected by the reference plate in a clean state, the second reference data being obtained by the image reading unit using light reflected by the reference plate before reading an image, and an image correcting unit that corrects the image on the basis of the correction data generated by the correction data generating unit.
    • 图像读取装置包括图像读取单元,该图像读取单元包括布置在其中的多个光电转换元件,并且使用光读取图像,该光被被传送到读取位置并由多个光电转换元件接收的文件反射,参考板 设置在读取位置的校正数据生成单元,其通过基于第一参考数据与第二参考数据的比率修改第二参考数据来生成校正数据,第一参考数据由图像读取单元使用 在清洁状态下由参考板反射的光,第二参考数据由图像读取单元使用在读取图像之前由参考板反射的光获得;以及图像校正单元,其基于校正数据校正图像 由校正数据生成单元生成。
    • 9. 发明授权
    • Document deciding apparatus, document reading apparatus, image forming apparatus and document deciding method
    • 文件决定装置,文件读取装置,图像形成装置以及文件决定方法
    • US07663787B2
    • 2010-02-16
    • US11372208
    • 2006-03-10
    • Norikazu Sakai
    • Norikazu Sakai
    • H04N1/46
    • H04N1/46H04N1/56
    • A document deciding apparatus includes: a light source; a light-quantity detection unit detecting a reference light quantity based on irradiation of the light source, and respective light quantities of plural colors based on reflection from or transmission through a document; a decision unit deciding whether the document is colorless or colored, in accordance with a predetermined criterion on the basis of the light quantities of plural colors detected by the light-quantity detection unit; and a control unit performing a control so as to alter the criterion of the decision unit or a value corresponding to the light quantities detected by the light-quantity detection unit, on the basis of a change of the reference light quantity detected by the light-quantity detection unit.
    • 文件决定装置包括:光源; 基于光源的照射检测参考光量的光量检测单元和基于从文档的反射或透过文档的多种颜色的各种光量; 基于由所述光量检测单元检测到的多种颜色的光量,根据预定标准判定所述文件是无色或有色的判定单元; 以及控制单元,其基于由所述光量检测单元检测到的参考光量的变化,执行控制以便改变所述判定单元的标准或对应于由所述光量检测单元检测的光量的值, 数量检测单元。
    • 10. 发明授权
    • Image reading apparatus with transport device control
    • 具有运输设备控制的图像读取装置
    • US09001397B2
    • 2015-04-07
    • US13112766
    • 2011-05-20
    • Norikazu SakaiKazunori Sato
    • Norikazu SakaiKazunori Sato
    • H04N1/04H04N1/12H04N1/203H04N1/407H04N1/10H04N1/193
    • H04N1/121H04N1/1013H04N1/1225H04N1/193H04N1/2032H04N1/4076H04N2201/044H04N2201/0456
    • An image reading apparatus includes an apparatus body; a transport device that is openable and closable; an image reading unit disposed in one of the apparatus body and the transport device and reading an image of the document transported by the transport device; a member to be read that is disposed in the other of the apparatus body and the transport device at a position opposite the image reading unit when the transport device is closed, the member to be read being read by the image reading unit; and a control unit that causes the image reading unit to read the member to be read at a predetermined time, and if the transport device is open at the predetermined time, causes the image reading unit to read the member to be read when the document is transported by the transport device.
    • 图像读取装置包括:装置本体; 一种可开启和关闭的运输设备; 图像读取单元,其设置在所述装置本体和所述输送装置的一个中,并读取由所述输送装置输送的所述原稿的图像; 要被读取的构件,当传送装置关闭时,在与图像读取单元相对的位置处设置在装置本体和传送装置中的另一个中,待读取的构件被图像读取单元读取; 以及控制单元,其使图像读取单元在预定时间读取要读取的构件,并且如果传输设备在预定时间打开,则当文档是文档是时,图像读取单元读取要读取的构件 由运输设备运输。