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    • 62. 发明授权
    • Oven controlled crystal oscillator for high stability
    • 烤箱控制晶体振荡器具有高稳定性
    • US07023291B2
    • 2006-04-04
    • US10946890
    • 2004-09-22
    • Hiroshi KatoManabu ItoTakeshi Uchida
    • Hiroshi KatoManabu ItoTakeshi Uchida
    • H03B5/32
    • H05K1/0201G05D23/19H03B5/04H03B5/36H05K1/181H05K3/301H05K2201/10022H05K2201/10068H05K2201/10151H05K2201/10515H05K2201/10606
    • To provide a highly stable crystal oscillator having increased thermal efficiency. The highly stable crystal oscillator comprises; a thermostat mainframe which maintains the temperature of a crystal resonator including a resonator container for sealing a crystal piece constant, an oscillating element which constitutes an oscillation circuit together with said crystal resonator, a temperature control element which controls the temperature inside of said thermostat mainframe, and a circuit board mounted with said thermostat mainframe, said oscillating element, and said temperature control element. The construction is such that a heat generating chip resistor and a highly heat sensitive element having a higher temperature dependency, among said oscillating element and said temperature control element, are arranged on one principal plane of said circuit board, and said heat generating chip resistor, said highly heat sensitive element, and said thermostat mainframe are directly heat bonded by a thermo-conductive material.
    • 提供具有增加的热效率的高度稳定的晶体振荡器。 高度稳定的晶体振荡器包括: 恒温器主机,其保持包括用于密封晶体片的谐振器容器的晶体谐振器的温度,与所述晶体谐振器一起构成振荡电路的振荡元件,控制所述恒温器主机内部的温度的温度控制元件, 以及安装有所述恒温器主机,所述振荡元件和所述温度控制元件的电路板。 该结构使得在所述振荡元件和所述温度控制元件之中具有较高温度依赖性的发热芯片电阻器和高热敏元件被布置在所述电路板的一个主平面上,并且所述发热芯片电阻器, 所述高热敏元件,并且所述恒温器主机通过热导材料直接热粘合。
    • 68. 发明授权
    • Image forming apparatus equipped with laser light source
    • 配有激光光源的成像设备
    • US08963970B2
    • 2015-02-24
    • US13523340
    • 2012-06-14
    • Noriyuki ChinoKatsuhiko TakanoMasaaki NaoiShingo HoritaTakeshi Uchida
    • Noriyuki ChinoKatsuhiko TakanoMasaaki NaoiShingo HoritaTakeshi Uchida
    • B41J2/385B41J2/435G02B26/12G03G15/043
    • G02B26/127G03G15/043
    • An image forming apparatus improved in the accuracy of detecting a time period over which a laser beam is scanned. A laser beam emitted from a laser light source is deflected by a polygon mirror such that the laser beam scans a photosensitive drum. The deflected laser beam is guided onto the photosensitive drum via an imaging lens. A mode hop detection unit detects a mode hop of the laser beam. An image pulse generation section detects a main scanning magnification of an electrostatic latent image formed on the photosensitive drum. When a mode hop is detected, the main scanning magnification in a next scanning cycle is corrected using a correction value stored in a storage unit and used most lately, whereas when no wavelength variation has not detected, the main scanning magnification in the next scanning cycle is corrected using the latest correction value.
    • 一种图像形成装置提高了检测激光束被扫描的时间段的精度。 从激光光源发射的激光束被多面镜偏转,使得激光束扫描感光鼓。 偏转的激光束经由成像透镜被引导到感光鼓上。 模式跳跃检测单元检测激光束的模式跳跃。 图像脉冲产生部分检测形成在感光鼓上的静电潜像的主扫描倍率。 当检测到模式跳跃时,使用存储在存储单元中并最近使用的校正值来校正下一个扫描周期中的主扫描倍率,而当没有检测到波长变化时,在下一个扫描周期中的主扫描倍率 使用最新的校正值进行校正。