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    • 1. 发明专利
    • Print head and image formation device
    • 打印头和图像形成装置
    • JP2014172189A
    • 2014-09-22
    • JP2013043762
    • 2013-03-06
    • Ricoh Co Ltd株式会社リコー
    • SUZUKI MITSUO
    • B41J2/44B41J2/45B41J2/455H04N1/036
    • PROBLEM TO BE SOLVED: To provide a print head capable of suppressing a temperature rise due to generation of heat.SOLUTION: A print head includes: a plurality of organic EL array chips 11 each having a plurality of organic EL elements and drive parts; a substrate 13 on which the plurality of organic EL array chips is mounted; an imaging optical system for condensing light emitted from the plurality of organic EL elements on a surface of a photoreceptor drum; and a housing to which the substrate and the imaging optical system is attached. The plurality of organic EL array chips is arranged in staggered arrangement in a direction along a Y-axis. Adjacent two organic EL array chips partially overlap with each other in a position in the direction along the Y-axis. Each of the organic EL array chips, in parts in which the organic EL array chips partially overlap with other organic EL array chips in the positions in the direction along the Y-axis, is mounted on the substrate via a heat radiation pattern 13A.
    • 要解决的问题:提供一种能够抑制由于发热引起的温升的打印头。解决方案:打印头包括:多个有机EL阵列芯片11,每个有机EL阵列芯片11具有多个有机EL元件和驱动部件; 其上安装有多个有机EL阵列芯片的基板13; 用于将从所述多个有机EL元件发射的光聚光在感光鼓的表面上的成像光学系统; 以及安装有基板和成像光学系统的壳体。 多个有机EL阵列芯片沿着Y轴的方向布置成交错排列。 相邻的两个有机EL阵列芯片沿着沿着Y轴的方向的位置彼此部分重叠。 在沿着Y轴方向的位置上有机EL阵列芯片与其它有机EL阵列芯片部分重叠的部分中的每个有机EL阵列芯片经由散热图案13A安装在基板上。
    • 2. 发明专利
    • Light quantity adjusting method for print head, and method for manufacturing image forming apparatus
    • 用于打印头的光量调节方法,以及用于制造图像形成装置的方法
    • JP2013240887A
    • 2013-12-05
    • JP2012113940
    • 2012-05-18
    • Ricoh Co Ltd株式会社リコー
    • SUZUKI MITSUO
    • B41J2/44B41J2/45B41J2/455H04N1/00
    • PROBLEM TO BE SOLVED: To provide a light quantity adjusting method for a print head capable of improving quality of an output image.SOLUTION: A light quantity adjusting method for a print head includes steps of; creating first drive current correction data for reducing dispersion of a plurality of light beams from a print head including a plurality of LED elements arrayed in a Y axis direction, to be used for the correction of drive current for the plurality of LED elements; creating second drive current correction data for reducing brightness variation of an image formed by the print head on a recording paper via a photoreceptor drum, caused by the photoreceptor drum or the like, to be used for the correction of the drive current for the plurality of LED elements; and correcting the drive current value for the plurality of LED elements based on the first and second drive current correction data.
    • 要解决的问题:提供一种能够提高输出图像质量的打印头的光量调节方法。解决方案:一种用于打印头的光量调节方法,包括以下步骤: 产生第一驱动电流校正数据,用于减少来自包括沿Y轴方向排列的多个LED元件的打印头的多个光束的色散,以用于校正多个LED元件的驱动电流; 产生第二驱动电流校正数据,用于减少由感光鼓等引起的由感光鼓在记录纸上由打印头形成的图像的亮度变化,以用于校正多个 LED元件; 以及基于所述第一和第二驱动电流校正数据来校正所述多个LED元件的驱动电流值。
    • 4. 发明专利
    • Image forming apparatus
    • 图像形成装置
    • JP2013126725A
    • 2013-06-27
    • JP2011276567
    • 2011-12-19
    • Ricoh Co Ltd株式会社リコー
    • IMAI SHIGEAKISUZUKI MITSUO
    • B41J2/455B41J2/44B41J2/45H04N1/036H04N1/23
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus which can form a stable image without increasing the size.SOLUTION: Each printer head includes a light source, a rod lens array 304, a housing 306, two shielding members 310, and the like. The light source is housed in the housing 306, and includes a substrate 301, a light-emitting member, and a driving device. In addition, each of the print heads includes a space A formed by a surface at a -Z side of the substrate 301 and the housing 306. The space A serves as an air flow channel, allows air to flow over the surface at the -Z side of the substrate 301, and can rapidly exhaust heat generated on the substrate 301. Furthermore, the space can also exhaust heat conducted from the substrate 301 to the housing 306.
    • 要解决的问题:提供一种可以在不增加尺寸的情况下形成稳定图像的图像形成装置。 解决方案:每个打印头包括光源,棒状透镜阵列304,壳体306,两个屏蔽构件310等。 光源容纳在壳体306中,并且包括衬底301,发光构件和驱动装置。 此外,每个打印头包括由基板301的-Z侧的表面和壳体306形成的空间A.空间A用作空气流动通道,允许空气在表面上流动, Z侧,并且可以快速地排出在基板301上产生的热量。此外,该空间还可以排出从基板301传递到壳体306的热量。(C)2013,JPO和INPIT
    • 6. 发明专利
    • Optical scanning device and color image forming apparatus
    • 光学扫描装置和彩色图像形成装置
    • JP2009145515A
    • 2009-07-02
    • JP2007321562
    • 2007-12-13
    • Ricoh Co Ltd株式会社リコー
    • SUZUKI MITSUO
    • G02B26/10B41J2/44B81B3/00H04N1/113
    • PROBLEM TO BE SOLVED: To provide an optical scanning device in which a small diameter beam spot is achieved and a high image quality is obtained while keeping an original effect of an oscillating mirror, and to provide a color image forming apparatus using the optical scanning device.
      SOLUTION: A disclosed optical scanning device includes: a light source unit configured to emit a laser beam; an oscillating mirror configured to deflect and scan the laser beam from the light source unit; a scanning/imaging optical system configured to focus the deflected and scanned laser beam on a target surface; and light-receiving elements PD1 and PD2 configured to receive the laser beam in a scanning area of the laser beam, the mounting posture of the oscillating mirror being adjusted such that time intervals A
      1 and B
      1 between output pulses in output pulses of the respective light-receiving elements PD1 and PD2 become substantially the same between the light-receiving elements and/or widths PA
      11 and PB
      11 of the pulses become constant between the light-receiving elements PD1 and PD2.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种光学扫描装置,其中在保持原始的振动反射镜效果的同时获得小直径光斑并获得高图像质量,并提供使用该光学扫描装置的彩色图​​像形成装置 光学扫描装置。 解决方案:所公开的光学扫描装置包括:被配置为发射激光束的光源单元; 配置成偏转和扫描来自光源单元的激光束的振荡镜; 扫描/成像光学系统,被配置为将偏转和扫描的激光束聚焦在目标表面上; 以及被配置为在激光束的扫描区域中接收激光束的光接收元件PD1和PD2,调节振动反射镜的安装姿势,使得时间间隔A 1 和B 各光接收元件PD1和PD2的输出脉冲的输出脉冲之间的1 在光接收元件和/或宽度PA 11 和PB 11之间变得基本相同 在光接收元件PD1和PD2之间的脉冲的变得恒定。 版权所有(C)2009,JPO&INPIT
    • 7. 发明专利
    • Optical scanner and image forming apparatus
    • 光学扫描仪和图像形成装置
    • JP2008216276A
    • 2008-09-18
    • JP2007049212
    • 2007-02-28
    • Ricoh Co Ltd株式会社リコー
    • SUZUKI MITSUO
    • G02B26/10B41J2/44H04N1/113
    • PROBLEM TO BE SOLVED: To accurately detect the displacement in a subscanning direction of a light spot formed on a face to be scanned without inviting high cost.
      SOLUTION: Four photodetection sensors are provided corresponding to respective photoreceptor drums. A plurality of light beams are made incident via a scanning optical system to the respective photodetection sensors while moving in a main scanning direction, at least one light receiving element having a first light receiving part 205
      1 and a second light receiving part 205
      2 which have mutually different interval in a main scanning direction depending on the subscanning direction is included, both the first and the second light receiving parts have a size which covers a whole square virtual region enclosing a plurality of light spots on the light receiving face. Thus, a sufficient amount of light quantity is assured on the respective light receiving parts, and the photodetection sensors can output signals having excellent S/N.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了精确地检测形成在待扫描的脸上的光斑的副扫描方向上的位移,而不需要高成本。 解决方案:对应于相应的感光鼓提供四个光电检测传感器。 在主扫描方向上移动时,使多个光束经由扫描光学系统入射到各个光检测传感器,至少一个具有第一光接收部分205 <1>的光接收元件和第二光接收元件 包括在副扫描方向上在主扫描方向上具有相互不同间隔的光接收部分205,第一和第二光接收部分都具有覆盖整个正方形虚拟区域的尺寸 光接收面上的多个光点。 因此,在各光接收部分确保足够量的光量,并且光检测传感器可以输出具有优异S / N的信号。 版权所有(C)2008,JPO&INPIT
    • 8. 发明专利
    • Light source sheet, light source device and image formation device
    • 光源片,光源装置和图像形成装置
    • JP2008041373A
    • 2008-02-21
    • JP2006212644
    • 2006-08-03
    • Ricoh Co Ltd株式会社リコー
    • SUZUKI MITSUO
    • H05B33/02B41J2/44B41J2/45B41J2/455H01L51/50
    • PROBLEM TO BE SOLVED: To provide a small and inexpensive light source using an organic EL element; and an image formation device. SOLUTION: This light source sheet 31 is composed by comprising: a light trapping layer 34 trapping light in the layer by a refractive index difference; an organic EL element 33 formed by an organic thin-film layer 33b sandwiched between a negative electrode 33a and a positive electrode 33c each formed of a transparent electrode; and a metal reflective film 36 reflecting light having penetrated the transparent electrodes 33a and 33c. In order to prevent light from leaking from ends of the organic thin-film layer 33b, metal reflective films 35 are formed at the respective ends. The light trapping layer 34 is stacked on the electrode side of the negative electrode 33a (or the positive electrode 33c) constituting the organic EL element 33. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:使用有机EL元件提供小而廉价的光源; 和图像形成装置。 解决方案:该光源片31由以下部分组成:光俘获层34,以折射率差捕获该层中的光; 由夹在由透明电极形成的负极33a和正极33c之间的有机薄膜层33b形成的有机EL元件33; 以及反射透过透明电极33a,33c的光的金属反射膜36。 为了防止光从有机薄膜层33b的端部泄漏,在各个端部形成金属反射膜35。 遮光层34层叠在构成有机EL元件33的负极33a(或正极33c)的电极侧。(C)2008,JPO&INPIT
    • 9. 发明专利
    • Optical scanner and image forming apparatus
    • 光学扫描仪和图像形成装置
    • JP2007171648A
    • 2007-07-05
    • JP2005370316
    • 2005-12-22
    • Ricoh Co Ltd株式会社リコー
    • SUZUKI MITSUO
    • G02B26/10B41J2/44G03G15/04G03G15/043H04N1/113
    • PROBLEM TO BE SOLVED: To provide an optical scanner which detects the vertical scanning position of laser beams corresponding to respective colors highly accurately and at a low cost in a tandem type image forming apparatus, suppresses the occurrence of the positional shift of beam spots by adjusting and correcting the scanning beams onto predetermined positions by using the detected results, and contributes to yield a high quality picture. SOLUTION: Laser beam detectors 101a and 101b provided with a light receiving element for detecting the vertical scanning positions of the laser beams are arranged correspondingly to respective photoreceptors 11a and 11b, light receiving quantities per unit time of the laser beams which scan the laser beam detectors are decided on the basis of detected information of the light receiving elements and light sources 1 and 1' are controlled so that the light receiving quantities per unit time become within a predetermined range. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:为了提供一种在串联型图像形成装置中以高精度和低成本检测对应于各种颜色的激光束的垂直扫描位置的光学扫描器,抑制了射束的位置偏移的发生 通过使用检测结果将扫描光束调整和校正到预定位置,并且有助于产生高质量的图像。 解决方案:设置有用于检测激光束的垂直扫描位置的光接收元件的激光束检测器101a和101b对应于相应的感光体11a和11b布置,扫描所述激光束的每单位时间的光接收量 基于受光元件的检测信息来决定激光束检测器,并且控制光源1和1',使得每单位时间的光接收量变得在预定范围内。 版权所有(C)2007,JPO&INPIT
    • 10. 发明专利
    • Closed-type polygon scanner
    • 封闭型多边形扫描仪
    • JP2007006697A
    • 2007-01-11
    • JP2006190306
    • 2006-07-11
    • Ricoh Co Ltd株式会社リコー
    • SUZUKI MITSUOITAMI YUKIO
    • H02K5/00B41J2/44G02B26/12H02K5/16H02K7/09H02K29/08H04N1/036H04N1/113
    • PROBLEM TO BE SOLVED: To provide a closed-type polygon scanner which can reduce rise in the temperature of control circuit board and can improve the reliability. SOLUTION: The motor housing of the closed-type polygon scanner has a hole for fixing a stationary shaft to the inner peripheral side of a protruding part by shrinkage fit, and an outer peripheral surface for fixing a core provided with a motor winding to the protruding part. The motor housing is made to be single metal member, wherein the lower end surface of the core is positioned within the range of the axial direction length, where the stationary shaft is fixed to the motor housing by the shrinkage fit. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种能够减少控制电路板的温度上升并可提高可靠性的闭式多边形扫描仪。 解决方案:封闭式多边形扫描仪的电动机壳体具有用于通过收缩配合将固定轴固定到突出部分的内周侧的孔,以及用于固定设置有电动机绕组的芯的外周面 到突出部分。 电动机壳体为单金属构件,芯体的下端面位于轴向长度的范围内,固定轴通过收缩配合固定在电动机壳体上。 版权所有(C)2007,JPO&INPIT