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1. 发明授权

EP2326511B1 PIXEL CLOCK GENERATOR AND IMAGE FORMING APPARATUS 有权
公开(公告)号：EP2326511B1
公开(公告)日：2018-08-29
申请号：EP09814706.9
申请日：2009-09-15
申请人： Ricoh Company, Ltd.
发明人： MASUI, Naruhiro
IPC分类号： G03G15/043 , G06K15/12 , H04N1/12 , H04N1/053 , G02B26/12 , H04N1/113
CPC分类号： H04N1/053 , G02B26/127 , G03G15/043 , G06K15/1219 , H04N1/1135 , H04N1/12 , H04N2201/0082 , H04N2201/02439 , H04N2201/0471 , H04N2201/04732 , H04N2201/04744 , H04N2201/04772 , H04N2201/04784 , H04N2201/04786 , H04N2201/04794
摘要： A pixel clock generator includes a frequency divider 4 that generates a pixel clock PCLK based on a high frequency clock VCLK, a comparator 5 that calculates an error Lerr in the time obtained by integrating a cycle of the pixel clock PCLK for a target number RefN from a time when synchronization signals SPSYNC and EPSYNC are detected, a filter 6, and a frequency calculating unit 7 that sets a frequency dividing value M of the frequency divider 4. The filter 6 and the frequency calculating unit 7 calculate an average of a frequency of the pixel clock PCLK based on the error Lerr, determine a reference error value from the error Lerr in N-cycles, calculate offset values of the frequencies of N pieces of pixel clocks PCLK based on a difference between the reference error value and the error Lerr, and calculate the frequency dividing value M based on a result obtained by adding the circularly selected offset values and the average of the frequency of the pixel clock PCLK.

2. 发明授权

EP2447756B1 Light scanning unit and electrophotographic image forming apparatus using the same 有权转让
公开(公告)号：EP2447756B1
公开(公告)日：2018-08-15
申请号：EP11171541.3
申请日：2011-06-27
申请人： HP Printing Korea Co., Ltd.
发明人： Park, Gi-sung
IPC分类号： B41J2/47 , G02B26/12 , H04N1/113
CPC分类号： B41J2/473 , G02B26/123 , G02B26/124 , G02B26/127 , H04N1/1135
摘要： A light scanning unit includes a light source unit to emit a plurality of light beams, a light deflector to deflect the plurality of light beams emitted from the light source unit in a sub-scanning direction, an incident optical system to allow the plurality of light beams emitted from the light source unit to be incident on different reflection surfaces of the light deflector, and an imaging optical system that allows a plurality of light beams that are deflected by the light deflector, to be imaged on different scanning surfaces, wherein the incident optical system includes at least one incident light path changing member that folds light paths of the plurality of light beams between the light source unit and the light deflector.

3. 发明公开

EP3232247A4 LIGHT DEFLECTOR, IMAGE DISPLAY DEVICE, AND OBJECT DEVICE 有权
公开(公告)号：EP3232247A4
公开(公告)日：2017-11-22
申请号：EP15867037
申请日：2015-11-26
申请人： RICOH CO LTD
发明人： SUZUKI SHUICHI , HASHIGUCHI TSUYOSHI , NAKAGAWA JUN
IPC分类号： G02B26/10 , G02B5/02 , G02B5/18 , G02B26/08 , G02B27/00 , G02B27/01
CPC分类号： G02B26/10 , G02B5/0231 , G02B5/0294 , G02B5/18 , G02B26/08 , G02B26/12 , G02B26/127 , G02B27/0018 , G02B27/01
摘要： An optical deflector 20 includes: a mirror device configured to include a mirror 20d capable of oscillating; and a casing configured to accommodate the mirror device, and to include a window unit for facing the mirror 20d. The window unit allows part of an incident beam to be transmitted through the window unit, and reflects at least part of a remainder of the incident beam to a direction separated from an optical deflection range within which a deflected beam that has been deflected by the mirror device. In this case, an optical deflector is provided to be capable of preventing beams reflected by the window unit from reaching a target surface, without leading to an increase in size.

4. 发明公开

EP3064957A1 SEMICONDUCTOR LASER DRIVING APPARATUS, OPTICAL SCANNING APPARATUS, OBJECT DETECTION APPARATUS, AND MOBILE APPARATUS 有权
标题翻译： HALBLEITERLASERANSTEUERUNGSVORRICHTUNG，OPTISCHE ABTASTVORRICHTUNG，OBJEKTERKENNUNGSVORRICHTUNG移动VORRICHTUNG
公开(公告)号：EP3064957A1
公开(公告)日：2016-09-07
申请号：EP16158287.9
申请日：2016-03-02
申请人： Ricoh Company, Ltd.
发明人： SAKAI, Kohji , UEHIRA, Masataka , IMAI, Shigeaki , NAKAMURA, Tadashi
IPC分类号： G01S7/497 , G01S7/484 , G01S17/10 , G01S17/42 , G01S17/93 , G01S7/481
CPC分类号： H01S5/042 , G01S7/4817 , G01S7/484 , G01S7/4972 , G01S17/02 , G01S17/10 , G01S17/42 , G01S17/936 , G02B26/127 , H01S5/0428
摘要： A semiconductor laser driving apparatus (100) for driving a semiconductor laser (LD) serving as a light source for optical scanning, the semiconductor laser driving apparatus (100) includes: first and second switching elements (Q1, Q2) that are each capable of switching energization of the semiconductor laser (LD) ON/OFF; a first pulse generation unit (1) that intermittently outputs first driving pulses to the first switching element (Q1) in a first time slot; and a second pulse generation unit (2) that outputs a second driving pulse to the second switching element (Q2) in a second time slot different from the first time slot.
摘要翻译：一种用于驱动用作光学扫描光源的半导体激光器（LD）的半导体激光器驱动装置（100），所述半导体激光器驱动装置（100）包括：第一和第二开关元件（Q1，Q2）半导体激光器（LD）的开关通电ON / OFF; 在第一时隙中间歇地向第一开关元件（Q1）输出第一驱动脉冲的第一脉冲发生单元（1）以及在与第一时隙不同的第二时隙中向第二开关元件（Q2）输出第二驱动脉冲的第二脉冲发生单元（2）。

5. 发明公开

EP2728393A3 Laser Scanning Unit and Image Forming Apparatus including the Same 有权转让
标题翻译：激光扫描和成像装置，使
公开(公告)号：EP2728393A3
公开(公告)日：2016-08-03
申请号：EP13169987.8
申请日：2013-05-31
申请人： Samsung Electronics Co., Ltd
发明人： Park, Gi-sung
IPC分类号： G02B26/12 , G03G15/04
CPC分类号： G03G15/04036 , G02B26/12 , G02B26/123 , G02B26/124 , G02B26/125 , G02B26/127
摘要： A light scanning unit includes: a light source emitting a light beam according to an image signal; a light deflector deflecting and scanning the light beam emitted from the light source; and a synchronization detection optical system comprising a synchronization detection sensor detecting a synchronization signal by receiving a portion of the light beam that is deflected and scanned by the light deflector and a synchronization detection lens disposed between the light deflector and the synchronization detection sensor, wherein the synchronization detection lens is an anamorphic lens in which refractive power in a first direction and refractive power in a second direction different from the first direction are different, and wherein the first direction of the synchronization detection lens is inclined with respect to a main scanning direction in which a light beam incident on the synchronization detection lens is scanned.

6. 发明授权

EP2124086B1 Light beam scanning apparatus, laser machining apparatus, test method and laser machining method 失效
标题翻译：光束扫描，激光加工设备，试验方法和激光加工方法
公开(公告)号：EP2124086B1
公开(公告)日：2016-04-13
申请号：EP09158951.5
申请日：2009-04-28
申请人： Canon Kabushiki Kaisha
发明人： Ueda, Shinji
IPC分类号： G02B26/10 , B23K26/08 , B23K26/04 , G02B26/12
CPC分类号： G02B26/101 , G02B26/105 , G02B26/127

7. 发明公开

EP2853952A1 Optical scanning device and image forming apparatus using same 有权
标题翻译： Optische Abtastvorrichtung und Bilderzeugungsvorrichtung damit
公开(公告)号：EP2853952A1
公开(公告)日：2015-04-01
申请号：EP14003331.7
申请日：2014-09-26
申请人： Kyocera Document Solutions Inc.
发明人： Yoshida, Shingo , Sawamoto, Chika
IPC分类号： G03G15/043
CPC分类号： B41J2/451 , B41J2/455 , G02B26/123 , G02B26/125 , G02B26/127 , G02B26/129 , G03G15/043 , G03G15/0435
摘要： An optical scanning device includes first and second light sources, a polygon mirror, first and second scanning lenses, first and second reflecting mirrors, and an adjusting mechanism for adjusting the posture of the first reflecting mirror. The adjusting mechanism adjusts the posture of the first reflecting mirror using a predetermined first adjustment amount so that a first scanning line drawn by a first light beam to scan a first circumferential surface and a second scanning line drawn by a second light beam to scan a second circumferential surface are parallel when a drum rotation speed is a predetermined first speed, and adjusts the posture of the first reflecting mirror using a predetermined second adjustment amount different from the first adjustment amount and capable of making the first and second scanning lines parallel at a second speed different from the first speed when the drum rotation speed is the second speed.
摘要翻译：光学扫描装置包括第一和第二光源，多面镜，第一和第二扫描透镜，第一和第二反射镜以及用于调节第一反射镜的姿态的调节机构。调整机构使用规定的第一调整量调整第一反射镜的姿势，使得由第一光束画出的第一扫描线扫描由第二光束画出的第一周面和第二扫描线，以扫描第二光束当滚筒旋转速度为预定的第一速度时，周面平行，并且使用与第一调节量不同的预定的第二调节量来调整第一反射镜的姿势，并且能够使第一和第二扫描线平行于第二速度与第一速度不同时，滚筒转速为第二速度。

8. 发明授权

EP1995641B1 Method and apparatus for forming image 有权
标题翻译：用于图像成形方法和装置
公开(公告)号：EP1995641B1
公开(公告)日：2014-08-27
申请号：EP08251777.2
申请日：2008-05-22
申请人： Ricoh Company, Ltd.
发明人： Yamashita, Hidetoshi
IPC分类号： G03G15/043 , G02B26/12
CPC分类号： G03G15/043 , G02B26/127 , G03G15/0435 , G03G2215/0404

9. 发明授权

EP1970748B1 Optical scanning device and image forming apparatus using the same 有权
标题翻译：光学扫描装置和图像形成装置，所以
公开(公告)号：EP1970748B1
公开(公告)日：2013-05-15
申请号：EP08004586.7
申请日：2008-03-12
申请人： Canon Kabushiki Kaisha
发明人： Kudo, Genichiro
IPC分类号： G02B26/12
CPC分类号： G02B26/123 , G02B26/127

10. 发明公开

EP2464276A1 IMPROVEMENTS IN OR RELATING TO LASER SCANNING SYSTEMS 有权
标题翻译：改进技术或与之相关的激光扫描系统
公开(公告)号：EP2464276A1
公开(公告)日：2012-06-20
申请号：EP10750150.4
申请日：2010-07-29
申请人： Optos PLC
发明人： AZEGROUZ, Hind
IPC分类号： A61B3/12 , G11B7/125
CPC分类号： A61B3/1025 , A61B3/0025 , A61B3/12 , G02B26/127
摘要： The invention provides a method of reducing jitter error in a laser scanning system (1) adapted to produce a scanned image comprising a number of lines of an object (18). The method comprising the steps of providing a reference object (22) arranged such that the scanned image produced by the laser scanning system (1) includes a reference image (24) of the reference object (22); processing the reference image (24) to calculate an error arising from non-repeatable displacement of the lines of the reference image (24); and adjusting at least one operating parameter of the laser scanning system (1) in response to the calculated error.

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