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    • 44. 发明授权
    • Pulse width modulation system and image forming apparatus having the pulse width modulation system
    • 脉宽调制系统和具有脉宽调制系统的图像形成装置
    • US06326993B1
    • 2001-12-04
    • US09526289
    • 2000-03-15
    • Hiroki SatohMakoto NakajimaKoji Tanimoto
    • Hiroki SatohMakoto NakajimaKoji Tanimoto
    • B41J247
    • G06K15/00G06K2215/0002G06K2215/0011G06K2215/0082
    • When a CPU begins to monitor whether delay variation characteristics of a pulse width variation circuit have varied, it selects a basic delay setting value in a basic delay value setting block from a smallest one. The CPU sets a division number in a phase select block from a given minimum desired division number for pulse width modulation. The CPU senses the level of a phase comparison result signal (PHASE) from the pulse width modulation circuit. If the phase comparison result signal is stable at “1”, the CPU 1 fixes the division number. If the phase comparison result signal is “0” and the division number is not maximum, the CPU increases the division number and goes back to the setting of the division number. If the division number is maximum, the CPU increases the basic delay and goes back to the basic delay setting.
    • 当CPU开始监视脉宽变化电路的延迟变化特性是否变化时,从最小的基本延迟值设定块中选择基本的延迟设定值。 CPU根据脉冲宽度调制的给定最小期望分频数设置相位选择块中的分频数。 CPU检测来自脉宽调制电路的相位比较结果信号(PHASE)的电平。 如果相位比较结果信号稳定在“1”,则CPU 1固定分割号。 如果相位比较结果信号为“0”且分频数不是最大值,则CPU增加分频数,并返回到分频数的设置。 如果分频数是最大值,则CPU会增加基本延时并返回到基本延时设置。
    • 49. 发明授权
    • Joint structure
    • 联合结构
    • US08419074B2
    • 2013-04-16
    • US13297903
    • 2011-11-16
    • Shinjiro InomataMakoto Nakajima
    • Shinjiro InomataMakoto Nakajima
    • F16L13/02
    • B23K33/004F16L23/026F16L23/14G21C7/10G21C13/032Y02E30/39
    • In a joint structure, a tube member having a polygonal cross-section can be joined to a flange surface by full penetration welding with good strength margin, without imparting unreasonable force to the weld portion. The joint structure comprises a polygonal cylindrical lower guide tube joined by butt welding to a surface of a middle flange having a through-hole of the same shape as the lower guide tube, wherein at the end of the lower guide tube, within the linear portions that constitute each of the sides of the lower guide tube, there exists a weld portion welded to the surface in at least one location and an unwelded portion located separately from the weld portion, and a level difference at least as large as a distance equivalent to the weld shrinkage of the weld portion is provided between the end positions of the weld portion of the unwelded portion.
    • 在接头结构中,具有多边形横截面的管构件可以通过全面穿透焊接而具有良好的强度裕度而接合到凸缘表面,而不会对焊接部分施加不合理的力。 该接合结构包括一个多边形的圆柱形下导向管,其通过对接焊接到具有与下导管相同形状的通孔的中间凸缘的表面上,其中在下导向管的端部处于直线部分 构成下引导管的每个侧面,在至少一个位置处存在焊接到表面的焊接部分和与焊接部分分开定位的未焊接部分,并且至少等于相当于 焊接部的焊接收缩率设置在未焊接部的焊接部的端部位置之间。