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    • 2. 发明授权
    • Image forming apparatus and light emitting apparatus
    • 图像形成装置和发光装置
    • US6121994A
    • 2000-09-19
    • US219749
    • 1998-12-23
    • Masaki KuribayashiNoboru KoumuraYukio NagaseIzumi NaritaSeiji Mashimo
    • Masaki KuribayashiNoboru KoumuraYukio NagaseIzumi NaritaSeiji Mashimo
    • B41J2/44B41J2/45B41J2/455G03G15/01G06K15/12B41J2/47
    • G06K15/1247B41J2/45
    • A light emitting apparatus including a photosensitive member and an exposure device including a light emitting device array made up of a plurality of light emitting devices arranged in a direction of main scan across a moving direction of the photosensitive member and a switching device array made up of a plurality of switching devices arranged and connected to the light emitting devices in one-to-one relation. The switching device array is divided into a plurality of groups, a first group of leads connected in common to first terminals of the switching devices for each of the plural groups of switching devices, a second group of leads connected to second terminals of each of the switching devices, and a third group of leads, each of the third group of leads connected to third terminals of each switching device in a respective group of switching devices. The apparatus further includes a drive device for operating the simultaneous light emitting circuits to apply a first scan signal to the first group of leads, a voltage signal with one polarity to the third group of leads in synch with the first scan signal, and a discharge signal to the second group of leads, thereby causing capacitors to be discharged.
    • 一种发光装置,其包括感光构件和曝光装置,所述曝光装置包括由沿着所述感光构件的移动方向的主扫描方向布置的多个发光装置构成的发光装置阵列和由所述感光构件的移动方向构成的开关装置阵列 多个开关器件以一一对应的关系布置和连接到发光器件。 开关器件阵列被分成多个组,第一组引线与多个开关器件中的每一个的开关器件的第一端子共同连接,第二组引线连接到每个开关器件的第二端子 开关器件和第三组引线,第三组引线中的每一个引线连接到相应开关器件组中的每个开关器件的第三端子。 该装置还包括用于操作同时发光电路以将第一扫描信号施加到第一组引线的驱动装置,具有与第一扫描信号同步的第三组引线的具有一个极性的电压信号,以及放电 信号到第二组引线,从而使电容器放电。
    • 4. 发明授权
    • Light emitting apparatus with temperature control, exposure apparatus, and image forming apparatus
    • 具有温度控制的曝光装置,曝光装置和图像形成装置
    • US06266074B1
    • 2001-07-24
    • US09419783
    • 1999-10-18
    • Noboru KoumuraYukio NagaseIzumi NaritaSeiji Mashimo
    • Noboru KoumuraYukio NagaseIzumi NaritaSeiji Mashimo
    • H05B3300
    • B41J2/45H01L51/529
    • Provided is a light emitting apparatus capable of preventing light emitting elements made of an organic compound from being affected by moisture in an ambience, thereby increasing their lifetime, and suitably applicable to an exposure section of the electrophotographic method. Temperature sensors are set next to a light emitter array which is an array of many light emitting elements made of the organic compound. A drive control unit of the array is composed of CPU, ROM, RAM, and I/O ports. The CPU carries out control of each unit according to input data of image information etc. and also carries out pre-heat control for the light emitting elements. The temperature sensors detect the temperature of the light emitting elements and the CPU, receiving their detection output, turns the light emitting elements or a heating element provided separately, on and off so that a detected temperature value becomes a predetermined value in a waiting state without the input data. In the waiting state the light emitting elements generate heat per se to be kept at the predetermined temperature.
    • 提供一种能够防止由有机化合物制成的发光元件在环境中受潮湿影响的发光装置,从而延长其使用寿命,并适用于电子照相方法的曝光部分。 温度传感器设置在由有机化合物制成的许多发光元件的阵列的发光体阵列旁边。 阵列的驱动控制单元由CPU,ROM,RAM和I / O端口组成。 CPU根据图像信息的输入数据等对每个单元进行控制,并对发光元件进行预热控制。 温度传感器检测发光元件和CPU的温度,接收其检测输出,转动单独设置的发光元件或加热元件,以使得检测到的温度值在等待状态下变为预定值,而没有 输入数据。 在等待状态下,发光元件本身发热保持在预定温度。