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    • 138. 发明授权
    • Method and apparatus for detecting the discharge status of inkjet printheads
    • 用于检测喷墨打印头的排放状态的方法和装置
    • US06419341B1
    • 2002-07-16
    • US09559456
    • 2000-04-28
    • Yukio NohataAtsushi SaitoTakeshi KohnoTakashi OnoShinichiro KohriShigeyuki Sugiyama
    • Yukio NohataAtsushi SaitoTakeshi KohnoTakashi OnoShinichiro KohriShigeyuki Sugiyama
    • B41J201
    • B41J25/34
    • Printer performs accurate ink-discharge status detection, dependent upon the type of a printhead attached to the printer, the print mode and the color of ink change, and a facsimile apparatus using the printer. Each time printing based on received facsimile image data for one page of print sheet has been completed, the printhead is moved to a position close to a photosensor, and test ink discharge is performed. At this time, the type of printhead is determined, and whether or not the color printhead is in normally-dischargeable status is judged by comparing a pulsewidth obtained from output from the photosensor with a threshold value selected in accordance with the discrimination result. Otherwise, one of a plurality of threshold values according to print modes and ink colors is read from a ROM, and test ink discharge is performed with respect to corresponding color ink. The result of the discharge is compared with the threshold value. Thus, whether or not the printhead is in normally-dischargeable status is judged with respect to each color ink.
    • 打印机执行精确的排墨状态检测,这取决于连接到打印机的打印头的类型,打印模式和墨水变化的颜色,以及使用该打印机的传真设备。 每次基于接收到的一页打印纸的传真图像数据的打印完成时,打印头移动到靠近光电传感器的位置,并执行测试喷墨。 此时,确定打印头的类型,并且通过将从光传感器的输出获得的脉冲宽度与根据鉴别结果选择的阈值进行比较来判断彩色打印头是否处于正常可放电状态。 否则,从ROM中读取根据打印模式和墨水颜色的多个阈值中的一个,并且相对于相应的彩色墨水执行测试墨水排出。 将放电结果与阈值进行比较。 因此,关于每个彩色墨水判断打印头是否处于正常放电状态。
    • 139. 发明授权
    • Charged-particle beam lithography apparatus and system capable of readily detecting abnormality in controlling on-off operation
    • 带电粒子束光刻设备和系统,其能够容易地检测控制开关操作的异常
    • US06399954B1
    • 2002-06-04
    • US09241576
    • 1999-02-02
    • Isamu SetoAtsushi SaitoHidefumi Yabara
    • Isamu SetoAtsushi SaitoHidefumi Yabara
    • H01J37302
    • B82Y10/00B82Y40/00H01J37/045H01J37/3174H01J2237/30466
    • Disclosed is a charged-particle beam lithography apparatus capable of readily detecting an abnormality in controlling the on-off operation of a charged-particle beam. The charged-particle beam lithography apparatus consists of a charged-particle beam generator, a charged-particle beam reshaping unit, a charged-particle beam converging unit, a charged-particle beam deflecting unit, a blanking unit, a digital converting circuit, and a comparing circuit. The blanking unit produces a blanking signal used to control the on-off operation of a charged-particle beam according to exposure pattern data, and thus controls the on-off operation of the charged-particle beam. The digital converting circuit produces a blanking data signal that is a digital signal indicating a variation of the blanking signal. The comparing circuit compares the blanking data signal with the exposure pattern data. It is detected whether the on-off operation of the charged-particle beam is controlled according to the exposure pattern data.
    • 公开了一种能够容易地检测控制带电粒子束的开关动作的异常的带电粒子束光刻装置。 带电粒子束光刻设备由带电粒子束发生器,带电粒子束整形单元,带电粒子束会聚单元,带电粒子束偏转单元,消隐单元,数字转换电路和 比较电路。 消隐单元根据曝光图案数据产生用于控制带电粒子束的开 - 关操作的消隐信号,从而控制带电粒子束的开 - 关操作。 数字转换电路产生消隐数据信号,该消隐数据信号是指示消隐信号变化的数字信号。 比较电路将消隐数据信号与曝光图案数据进行比较。 检测根据曝光图案数据是否控制带电粒子束的开 - 关操作。