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    • 3. 发明授权
    • Communication system, image forming apparatus, initialization method, trouble compensation method and storage medium
    • 通信系统,图像形成装置,初始化方法,故障补偿方法和存储介质
    • US06924901B1
    • 2005-08-02
    • US09567493
    • 2000-05-08
    • Toshihiko OtsuboTakashi Soya
    • Toshihiko OtsuboTakashi Soya
    • B41J29/38G06K15/02
    • B41J29/38
    • There is provided a communication system which is capable of resetting sub-communication ICs without providing special reset signal lines for transmitting a reset signal and also capable of properly transmitting a communication reset signal to the sub-communication ICs to reset the same when the system is in an abnormal state or when the power supply is turned off, an image forming apparatus provided with this communication system, an initialization method, and a storage medium that contains a program for executing the method. A host CPU controls the whole communication system. A communication controller controls a serial communication. A plurality of sub-communication ICs transmit serial data between themselves and the communication controller. A first reset IC resets the host CPU, and a second reset IC rests the communication controller. The first and second ICs reset the host CPU and the communication controller, respectively, according to different setting conditions. More specifically, the first reset IC resets the host CPU when the power supply voltage of the communication system is lower than a first predetermined value, and the second reset IC resets the communication controller when the power supply voltage is lower than a second predetermined value that is lower than the first predetermined value.
    • 提供了一种通信系统,其能够在不提供用于发送复位信号的特殊复位信号线的情况下复位子通信IC,并且还能够将通信复位信号适当地发送到子通信IC以在系统为 处于异常状态或当电源关闭时,设置有该通信系统的图像形成装置,初始化方法和包含用于执行该方法的程序的存储介质。 主机CPU控制整个通信系统。 通信控制器控制串行通信。 多个子通信IC在它们和通信控制器之间传送串行数据。 第一个复位IC复位主机CPU,第二个复位IC休息通信控制器。 第一和第二IC分别根据不同的设置条件复位主机CPU和通信控制器。 更具体地,当通信系统的电源电压低于第一预定值时,第一复位IC复位主机CPU,并且当电源电压低于第二预定值时,第二复位IC复位通信控制器, 低于第一预定值。
    • 5. 发明授权
    • Image forming apparatus and recording control device
    • 图像形成装置和记录控制装置
    • US06570671B1
    • 2003-05-27
    • US09406691
    • 1999-09-27
    • Jun YamaguchiToshihiko OtsuboMichio KawaseKazuyoshi SuzukiTakahiro WatanabeTetsuro Fukusaka
    • Jun YamaguchiToshihiko OtsuboMichio KawaseKazuyoshi SuzukiTakahiro WatanabeTetsuro Fukusaka
    • G06F1300
    • H04N1/0414G06K15/1247H04N1/0402H04N1/0443H04N1/12H04N1/193H04N1/40025H04N1/4092H04N2201/03108H04N2201/04756H04N2201/04774H04N2201/04791
    • An image forming apparatus has a recording element array including plural recording elements, an image forming section for causing a relative movement between the recording element array and a recording medium, thereby to form an image, and a drive section for driving the recording element array based on image data. A duty control unit varies the recording duty of the recording elements according to the relative movement speed between the recording element array and the recording medium. In another version, an image forming apparatus has a recording element array including plural recording elements, an image forming unit that effects a relative movement between the recording element array and a recording medium, memory for storing image data, a drive unit for driving the recording element array based on the image data read from the memory and an inhibitor for selectively inhibiting the recording operation by the image read from the memory, according to the relative movement speed between the recording element array and the recording medium. In yet another version, an image forming apparatus has a recording element array including plural recording elements, an image forming unit for causing a relative movement between the recording element array and a recording medium, a smoothing unit for applying a smoothing process to the image data, according to the relative movement speed between the recording element array and the recording medium and drive means for driving the recording element array, based on the image data subjected to the smoothing process by the smoothing unit.
    • 一种图像形成装置具有包括多个记录元件的记录元件阵列,用于使记录元件阵列与记录介质之间相对移动从而形成图像的图像形成部件,以及用于驱动记录元件阵列的驱动部件 对图像数据。 占空比控制单元根据记录元件阵列和记录介质之间的相对移动速度改变记录元件的记录占空比。 在另一个版本中,图像形成装置具有包括多个记录元件的记录元件阵列,实现记录元件阵列和记录介质之间的相对移动的图像形成单元,用于存储图像数据的存储器,用于驱动记录的驱动单元 基于从存储器读取的图像数据的单元阵列和抑制器,用于根据记录元件阵列和记录介质之间的相对移动速度选择性地禁止由存储器读取的图像的记录操作。 在另一个版本中,图像形成装置具有包括多个记录元件的记录元件阵列,用于在记录元件阵列和记录介质之间进行相对移动的图像形成单元,用于对图像数据应用平滑处理的平滑单元 根据记录元件阵列和记录介质之间的相对移动速度和驱动记录元件阵列的驱动装置,基于经过平滑处理的平滑处理的图像数据。
    • 8. 发明授权
    • Image recording apparatus and copying system
    • US06836344B2
    • 2004-12-28
    • US09217134
    • 1998-12-21
    • Jun KoideToshihiko OtsuboSeita Shono
    • Jun KoideToshihiko OtsuboSeita Shono
    • G06F1500
    • H04N1/4015
    • An image recording apparatus includes at least one recording head, in which a plurality of solid-state recording elements are arranged, for performing image recording by causing each of the plurality of solid-state recording elements to record a pixel, a storage unit for storing correction data for correcting image data in accordance with a recording characteristic of each of the plurality of solid-state recording elements so as to correspond to the corresponding one of the plurality of solid-state recording elements. Each of the plurality of solid-state recording elements is driven in accordance with input image data and the correction data stored in the storage unit. The apparatus also includes a pattern-data generation unit for generating predetermined pattern data, and for causing each of a predetermined number of consecutive solid-state recording elements from among the plurality of solid-state recording elements to record a pixel based on the predetermined pattern data, a reading unit for reading a test pattern recorded by the recording head based on the pattern data generated by the pattern-data generation unit, an acquisition unit for acquiring the recording characteristic of each of the plurality of solid-state recording elements based on a ratio of a number of solid-state recording elements which have recorded pixels in accordance with the predetermined test pattern to a number of pixels of the test pattern read by the reading unit, and a changing unit for changing the correction data for each of the solid-state recording elements in accordance with the recording characteristic of the corresponding one of the solid-state recording elements acquired by the acquisition means. The image recording apparatus can exactly detect the recording characteristic of each of the plurality of solid-state recording elements, and prevent nonuniformly in density caused by individual difference in the recording characteristic during image recording.
    • 10. 发明授权
    • Image recording apparatus and copying system
    • US06424432B1
    • 2002-07-23
    • US09217134
    • 1998-12-21
    • Jun KoideToshihiko OtsuboSeita Shono
    • Jun KoideToshihiko OtsuboSeita Shono
    • G06F1500
    • H04N1/4015
    • An image recording apparatus includes at least one recording head, in which a plurality of solid-state recording elements are arranged, for performing image recording by causing each of the plurality of solid-state recording elements to record a pixel, a storage unit for storing correction data for correcting image data in accordance with a recording characteristic of each of the plurality of solid-state recording elements so as to correspond to the corresponding one of the plurality of solid-state recording elements. Each of the plurality of solid-state recording elements is driven in accordance with input image data and the correction data stored in the storage unit. The apparatus also includes a pattern-data generation unit for generating predetermined pattern data, and for causing each of a predetermined number of consecutive solid-state recording elements from among the plurality of solid-state recording elements to record a pixel based on the predetermined pattern data, a reading unit for reading a test pattern recorded by the recording head based on the pattern data generated by the pattern-data generation unit, an acquisition unit for acquiring the recording characteristic of each of the plurality of solid-state recording elements based on a ratio of a number of solid-state recording elements which have recorded pixels in accordance with the predetermined test pattern to a number of pixels of the test pattern read by the reading unit, and a changing unit for changing the correction data for each of the solid-state recording elements in accordance with the recording characteristic of the corresponding one of the solid-state recording elements acquired by the acquisition means. The image recording apparatus can exactly detect the recording characteristic of each of the plurality of solid-state recording elements, and prevent nonuniformity in density caused by individual difference in the recording characteritic during image recording.