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1. 发明授权

EP1832911B1 Optical scanning apparatus 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
公开(公告)号：EP1832911B1
公开(公告)日：2013-01-09
申请号：EP07102249.5
申请日：2007-02-13
申请人： CANON KABUSHIKI KAISHA
发明人： Tomioka, Yuichi , Yamawaki, Takeshi
IPC分类号： G02B26/12 , G02B13/00 , G02B27/00
CPC分类号： G02B26/125 , G02B13/0005

2. 发明公开

EP1942651A1 Optical scanning device and image forming apparatus using the same 有权
标题翻译：光学扫描装置及使用其的图像形成装置
公开(公告)号：EP1942651A1
公开(公告)日：2008-07-09
申请号：EP08000026.8
申请日：2008-01-02
申请人： Canon Kabushiki Kaisha
发明人： Tomioka, Yuichi , Ishibe, Yoshihiro
IPC分类号： H04N1/191 , G02B26/12
CPC分类号： H04N1/1912 , G02B26/123 , H04N1/1135 , H04N1/1916 , H04N2201/04789
摘要： An optical scanning device includes a rotary polygonal mirror for scanningly deflecting light beams emitted from a light source device having light emitting members disposed spaced apart from each other in a main-scan direction, an input optical system by which, in a sub-scan section, light beams are incident on a deflecting surface of the rotary polygonal mirror in an oblique direction with respect to a normal to the deflecting surface, and an imaging optical system by which the light beams scanningly deflected by the rotary polygonal mirror are imaged on a surface to be scanned, wherein, when a maximum pivot angle of said rotary polygonal mirror is θ max [deg], the angle defined in the main-scan section between optical axes of the input optical system and the imaging optical system is 2ø [deg], the focal length of a converting optical element in the main-scan section is f col [mm], the spacing between two light emitting members most spaced apart from each other in the main-scan direction is a [mm], the largest oblique incidence angle in the sub-scan section of the light beams incident on the deflecting surface is α [deg], the imaging magnification of the imaging optical system in the sub-scan section is βs, the inscribed-circle radius of the rotary polygonal mirror is denoted by R [mm], and the resolution of an image in the sub-scan direction is denoted by DPI [dot/inch], a conditional expression | tan θ max cosφ × a fcol × R × βs × tanα × DPI 25.4 | ≤ 0.05
is satisfied.
摘要翻译：一种光学扫描装置包括：旋转多面镜，用于对从光源装置发射的光束进行扫描偏转，所述光源装置具有在主扫描方向上彼此间隔开的光发射部件;输入光学系统，在副扫描部分光束以相对于偏转表面的法线倾斜的方向入射在旋转多面镜的偏转表面上，以及成像光学系统，通过该成像光学系统使由旋转多面镜扫描偏转的光束成像在表面上其中，当所述旋转多面镜的最大旋转角度为θmax[deg]时，在输入光学系统和成像光学系统的光轴之间的主扫描截面中限定的角度为2°[deg] 主扫描截面中的转换光学元件的焦距为fcol [mm]，在主扫描方向上彼此最隔开的两个发光元件之间的间隔当入射到偏转表面上的光束的副扫描截面中的最大倾斜入射角是α[deg]时，副扫描截面中的成像光学系统的成像倍率是βs，旋转多面镜的内切圆半径由R [mm]表示，并且副扫描方向上的图像的分辨率由DPI [点/英寸]表示，条件表达式|tanθmaxcosφ×afcol×R× 满足βs×tanα×DPI25.4 |≤0.05。

3. 发明授权

EP1942651B1 Optical scanning device and image forming apparatus using the same 有权
公开(公告)号：EP1942651B1
公开(公告)日：2013-08-28
申请号：EP08000026.8
申请日：2008-01-02
申请人： Canon Kabushiki Kaisha
发明人： Tomioka, Yuichi , Ishibe, Yoshihiro
IPC分类号： H04N1/191 , G02B26/12
CPC分类号： H04N1/1912 , G02B26/123 , H04N1/1135 , H04N1/1916 , H04N2201/04789

4. 发明公开

EP1603321A3 Multi-beam optical scanning apparatus and image forming apparatus 有权
标题翻译：具有光学拾取装置中的多个光束，并且图像形成装置
公开(公告)号：EP1603321A3
公开(公告)日：2008-07-16
申请号：EP05253325.4
申请日：2005-05-31
申请人： CANON KABUSHIKI KAISHA
发明人： Tomioka, Yuichi
IPC分类号： H04N1/40
CPC分类号： H04N1/40031 , H04N1/40037
摘要： Provided is a multi-beam optical scanning apparatus, which is capable of reducing an inter-light-beams illuminance difference at the same image height on a surface to be scanned and forming a high-definition and high-quality image where no unevenness in density of image exists, and an image forming apparatus using the multi-beam optical scanning apparatus.
In the multi-beam optical scanning apparatus that brings a plurality of light beams emitted from the plurality of light emission portions into incident on the deflecting surface of the light deflector so as to exceed a width in a main scanning direction of the deflecting surface, when performing the emission light amount control for each of the plurality of light emission portions so that illuminances of the plurality of light beams become same at every image height on the surface to be scanned, the control means changes emission light amounts of the plurality of light emission portions at a maximum scanning angle, thereby reducing the inter-light-beams illuminance difference on the surface to be scanned.

5. 发明公开

EP1603321A2 Multi-beam optical scanning apparatus and image forming apparatus 有权
标题翻译： Optische Abtastvorrichtung mit mehreren Strahlen und Bilderzeugungsvorrichtung
公开(公告)号：EP1603321A2
公开(公告)日：2005-12-07
申请号：EP05253325.4
申请日：2005-05-31
申请人： CANON KABUSHIKI KAISHA
发明人： Tomioka, Yuichi
IPC分类号： H04N1/40
CPC分类号： H04N1/40031 , H04N1/40037
摘要： Provided is a multi-beam optical scanning apparatus, which is capable of reducing an inter-light-beams illuminance difference at the same image height on a surface to be scanned and forming a high-definition and high-quality image where no unevenness in density of image exists, and an image forming apparatus using the multi-beam optical scanning apparatus.
In the multi-beam optical scanning apparatus that brings a plurality of light beams emitted from the plurality of light emission portions into incident on the deflecting surface of the light deflector so as to exceed a width in a main scanning direction of the deflecting surface, when performing the emission light amount control for each of the plurality of light emission portions so that illuminances of the plurality of light beams become same at every image height on the surface to be scanned, the control means changes emission light amounts of the plurality of light emission portions at a maximum scanning angle, thereby reducing the inter-light-beams illuminance difference on the surface to be scanned.
摘要翻译：本发明提供一种多光束光学扫描装置，其能够减少要扫描的表面上的相同图像高度处的相互之间的光束照度差异，并且形成高分辨率和高质量的图像，其中密度不均匀以及使用该多光束光学扫描装置的图像形成装置。在将从多个发光部射出的多个光束入射到偏光板的偏转面上的多光束光扫描装置中，超过偏转面的主扫描方向的宽度，对所述多个发光部中的每一个进行发光量控制，使得所述多个光束的照度在待扫描的表面上的每个图像高度变得相同，所述控制装置改变所述多个发光部的发光量部分处于最大扫描角度，从而减少待扫描表面上的相互之间的光束照度差异。

6. 发明授权

EP2833192B1 Light scanning apparatus and image forming apparatus using the same 有权
公开(公告)号：EP2833192B1
公开(公告)日：2018-09-12
申请号：EP14178773.9
申请日：2014-07-28
申请人： CANON KABUSHIKI KAISHA
发明人： Ishihara, Kazuyuki , Tomioka, Yuichi , Kurokawa, Shuichi
IPC分类号： G02B26/12 , B41J2/47 , G02B13/00 , G06K15/12 , H04N1/047 , H04N1/113
CPC分类号： B41J2/471 , G02B26/124 , G02B26/125 , G03G15/04036 , G06K15/1219 , H04N1/1135 , H04N2201/0082
摘要： A light scanning apparatus (100) includes a light source (1), a deflector (5) configured to deflect a light flux (103) from the light source (1), and an imaging optical system configured to guide the light flux (103) deflected at the deflector (5) onto a scanned surface (7). The imaging optical system consists of a single imaging optical element (6), wherein, on the optical axis of the imaging optical system, the conditions 0.15 ‰¤ T2/Sk ‰¤ 0.3 and 0.03 ‰¤ d/K ‰¤ 0.08 are satisfied. A condition 0.3 ‰¤ B ‰¤ 0.6 is satisfied at a condensing position Y where a scanning angle ¸ is greatest, when the condensing position Y in the main scanning direction on the scanned surface (7) of the light flux (103) deflected at the scanning angle ¸ by the deflector (5) is expressed by Y = (K/B) × tan(B × ¸).

7. 发明授权

EP2003483B1 Method of forming an optical scanner with aberration correction 有权
标题翻译：结构的光学扫描设备的与像差的校正的方法
公开(公告)号：EP2003483B1
公开(公告)日：2013-11-20
申请号：EP08165869.2
申请日：2005-09-16
申请人： Canon Kabushiki Kaisha
发明人： Tomioka, Yuichi
IPC分类号： G02B26/12 , G02B27/00
CPC分类号： G02B26/124 , G02B26/125 , G02B27/0031
摘要： An optical scanner includes a light source (1) that emits a light beam, a light deflector (6), an incident optical system (5) that allows the light beam to impinge on the light deflector such that the width of the light beam in the main scanning direction is larger than the width of each deflecting surface of the light deflector in the main scanning direction, and a focusing optical system (8) that guides the light beam deflected by the light deflector to a surface to be scanned. The incident optical system and the focusing optical system are constructed such that aberrations occurring in the two optical systems when a light beam impinges on the surface to be scanned at an off-axis image height are asymmetrical on both sides of the center of the light beam and the directions of the aberrations are opposite to each other.

8. 发明公开

EP2003483A3 Optical scanner with aberration correction and image forming apparatus using the same 有权
标题翻译：使用相同的与像差的校正和图像形成装置的光学扫描装置
公开(公告)号：EP2003483A3
公开(公告)日：2012-03-07
申请号：EP08165869.2
申请日：2005-09-16
申请人： Canon Kabushiki Kaisha
发明人： Tomioka, Yuichi
IPC分类号： G02B26/12 , G02B27/00
CPC分类号： G02B26/124 , G02B26/125 , G02B27/0031
摘要： An optical scanner includes a light source (1) that emits a light beam, a light deflector (6), an incident optical system (5) that allows the light beam to impinge on the light deflector such that the width of the light beam in the main scanning direction is larger than the width of each deflecting surface of the light deflector in the main scanning direction, and a focusing optical system (8) that guides the light beam deflected by the light deflector to a surface to be scanned. The incident optical system and the focusing optical system are constructed such that aberrations occurring in the two optical systems when a light beam impinges on the surface to be scanned at an off-axis image height are asymmetrical on both sides of the center of the light beam and the directions of the aberrations are opposite to each other.

9. 发明公开

EP2863252A1 Optical scanning device and image forming apparatus using the same 审中-公开
标题翻译：光学扫描装置及使用其的图像形成装置
公开(公告)号：EP2863252A1
公开(公告)日：2015-04-22
申请号：EP14003766.4
申请日：2008-04-30
申请人： Canon Kabushiki Kaisha
发明人： Tomioka, Yuichi
IPC分类号： G02B26/12 , G02B27/00
CPC分类号： G02B27/0018 , G02B26/125
摘要： An optical scanning device configured to remove or sufficiently reduce ghost light includes an input optical system for directing a light beam from a light source to a deflecting surface of a deflector in an oblique direction in a sub-scanning direction section, an imaging optical system for converging an effective light beam deflected by the deflecting surface onto a surface to be scanned, and a light blocking member provided between the deflecting surface and the surface to be scanned for blocking ghost light, wherein the light blocking member includes an upper light blocking member and a lower light blocking member which are provided at different positions with respect to a sub-scanning direction and in a direction of an optical axis of the imaging optical system, and an end portion of each of the upper light blocking member and the lower light blocking member at a side where the effective light beam passes is arcuated such that a distance from a plane including a point of deflection in a deflecting plane and being perpendicular to a rotational axis of the deflector increases from a central portion in a main-scanning direction toward a peripheral portion.
摘要翻译：被配置为去除或充分减少幻影光的光学扫描装置包括：输入光学系统，用于将来自光源的光束在副扫描方向部分中沿倾斜方向引导到偏转器的偏转表面;成像光学系统，用于将由偏转表面偏转的有效光束会聚到要被扫描的表面上;以及设置在偏转表面和待扫描表面之间用于阻挡幻影光的光阻挡构件，其中光阻挡构件包括上光阻挡构件和下光阻挡构件，其设置在相对于成像光学系统的副扫描方向和光轴方向的不同位置处，以及上光阻挡构件和下光阻挡构件中的每一个的端部在有效光束通过的一侧处的构件是弓形的，从而与包括挠曲点的平面的距离是弧形的 n在偏转平面中并且垂直于偏转器的旋转轴线的方向从主扫描方向上的中央部分向外围部分增大。

10. 发明公开

EP2833192A1 Light scanning apparatus and image forming apparatus using the same 有权
标题翻译： Lichtabtastvorrichtung und Bilderzeugungsvorrichtung damit
公开(公告)号：EP2833192A1
公开(公告)日：2015-02-04
申请号：EP14178773.9
申请日：2014-07-28
申请人： CANON KABUSHIKI KAISHA
发明人： Ishihara, Kazuyuki , Tomioka, Yuichi , Kurokawa, Shuichi
IPC分类号： G02B26/12 , B41J2/47 , G02B13/00 , G06K15/12 , H04N1/047
CPC分类号： B41J2/471 , G02B26/124 , G02B26/125 , G03G15/04036 , G06K15/1219 , H04N1/1135 , H04N2201/0082
摘要： A light scanning apparatus (100) includes a light source (1), a deflector (5) configured to deflect a light flux (103) from the light source (1), and an imaging optical system configured to guide the light flux (103) deflected at the deflector (5) onto a scanned surface (7). The imaging optical system consists of a single imaging optical element (6), wherein, on the optical axis of the imaging optical system, the conditions 0.15 ≤ T2/Sk ≤ 0.3 and 0.03 ≤ d/K ≤ 0.08 are satisfied. A condition 0.3 ≤ B ≤ 0.6 is satisfied at a condensing position Y where a scanning angle θ is greatest, when the condensing position Y in the main scanning direction on the scanned surface (7) of the light flux (103) deflected at the scanning angle θ by the deflector (5) is expressed by Y = (K/B) × tan(B × θ).
摘要翻译：光扫描装置（100）包括光源（1），被配置为偏转来自光源（1）的光束（103）的偏转器（5），以及被配置为引导光束（103）的成像光学系统）在偏转器（5）处偏转到扫描表面（7）上。成像光学系统由单个成像光学元件（6）组成，其中在成像光学系统的光轴上满足条件0.15‰¤T2/ Sk‰¤0.3和0.03‰¤d / K‰¤0.08 。当在光束（103）的扫描表面（7）上的主扫描方向上的聚光位置Y偏转在最大的聚光位置Y时，满足条件0.3‰¤B‰¤0.6 偏转器（5）的扫描角度¸由Y =（K / B）×tan（B×¸）表示。

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