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1. 发明专利

JP2011140148A Plastics molded object, method for molding plastics molded object and optical scanner with plastics molded object 有权
标题翻译：塑料模制对象，塑料模制对象模塑和塑料模制对象的光学扫描仪的方法
公开(公告)号：JP2011140148A
公开(公告)日：2011-07-21
申请号：JP2010001272
申请日：2010-01-06
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： OHASHI TAKAMICHI , YAMANAKA YASUO , HIRANO AKIO , HAYASHI HIDEKAZU , TAKAHASHI TAKESHI , AOKI MIKI
IPC分类号： B29C33/42 , B29C33/46 , B29C45/37 , B29C45/43 , B29L11/00 , G02B3/06 , G02B13/00
CPC分类号： G02B26/123 , B29C45/0025 , B29C45/372 , B29C45/43 , B29C45/56 , B29L2011/0016 , B29L2011/0058
摘要： PROBLEM TO BE SOLVED: To increase the shape precision of a transfer surface of thin-walled plastics molded object. SOLUTION: The plastics molded object 10 includes a transfer surface formed by transferring an surface to be transferred through generating a resin pressure in the internal resin of a mold cavity. In addition, the plastics molded object 10 has one or two opposed transfer surfaces 11 and 12, and the thickness "a" of the molded object 10, in the perpendicular direction to the transfer surfaces 11 and 12, with regard to the perpendicular sectional shape 14 to the transfer surfaces 11 and 12 and the thickness "b" of the molded object in the parallel direction with the transfer surface, can satisfy the relationship of a/b COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提高薄壁塑料成形体的转印面的形状精度。解决方案：塑料成型体10包括通过在模腔的内部树脂中产生树脂压力而转移待转移的表面而形成的转印面。此外，塑料成形体10相对于垂直截面形状具有一个或两个相对的转印表面11和12，并且模制件10的厚度“a”在垂直于转印表面11和12的方向上 14与转印面11,12的平行方向的厚度b以及转印面的平行方向的厚度b可以满足a / b <1的关系。此外，在转印面11,12以外的区域中，通过不完全地转印模具的型腔形成凹陷不良转印部21和突出的不良转印部22中的至少一个。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2011059242A Optical scanner and image forming apparatus 审中-公开
标题翻译：光学扫描仪和图像形成装置
公开(公告)号：JP2011059242A
公开(公告)日：2011-03-24
申请号：JP2009206909
申请日：2009-09-08
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HAYASHI HIDEKAZU , HIRANO AKIO , OHASHI TAKAMICHI , TAKAHASHI TAKESHI , AOKI MIKI
IPC分类号： G02B26/10 , B41J2/44 , G02B3/06 , G02B13/00 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide an optical scanner which is improved in optical performance without changing the machining method and cost of a plastic scanning lens; and to provide an image forming apparatus with the optical scanner mounted thereon, and is high in image quality.
SOLUTION: The optical scanner 5 includes: a plurality of light sources for emitting light beams; an optical deflector 2 for deflecting light beams from the plurality of light sources; and an imaging optical system which images the plurality of light beams 9-1, 9-2 deflected by the optical deflector 2 on a surface 4 to be scanned that has a length in the main scanning direction and a sub-scanning direction orthogonally crossing each other. The imaging optical system has a plastic scanning lens 1 arranged facing the optical deflector 2. The plurality of light beams 9-1, 9-2 are made incident, with different incident angles, on different sub-scanning direction positions on the plastic scanning lens 1. The external form center position of the plastic scanning lens 1 in the sub-scanning direction and in the center line direction 6 is located on the center line 6 in the sub-scanning direction of the plurality of light beams 9-1, 9-2.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种在不改变塑料扫描透镜的加工方法和成本的情况下提高光学性能的光学扫描仪; 并且提供其上安装有光学扫描仪的图像形成装置，并且图像质量高。解决方案：光学扫描器5包括：用于发射光束的多个光源; 用于偏转来自多个光源的光束的光学偏转器2; 以及成像光学系统，其将由光偏转器2偏转的多个光束9-1,9-2在主扫描方向上具有长度的副扫描方向和与每个扫描方向正交的副扫描方向成像在待扫描的表面4上其他。成像光学系统具有面向光偏转器2的塑料扫描透镜1.多个光束9-1,9-2以不同的入射角入射到塑料扫描透镜上的不同的副扫描方向位置上塑料扫描透镜1在副扫描方向和中心线方向6上的外部中心位置位于多个光束9-1,9的副扫描方向上的中心线6上 -2。版权所有（C）2011，JPO＆INPIT

3. 发明专利

JP2011025433A Injection mold, plastic optical element, optical scanner, and image forming apparatus 有权
标题翻译：注塑模具，塑料光学元件，光学扫描仪和图像形成装置
公开(公告)号：JP2011025433A
公开(公告)日：2011-02-10
申请号：JP2009170915
申请日：2009-07-22
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TAKAHASHI TAKESHI , HAYASHI HIDEKAZU , OHASHI TAKAMICHI , AOKI MIKI
IPC分类号： B29C45/73 , B29C45/17 , B29C45/26 , B29L11/00
摘要： PROBLEM TO BE SOLVED: To provide an injection mold suppressing the internal strain at a place corresponding to a support member of a slit-like ventilation port in a plastic optical element to be molded, and to provide a plastic optical element, an optical scanner, and an image forming apparatus. SOLUTION: In the injection mold 10, a cavity filled with a resin material to mold the plastic optical element is demarcated by a plurality of molding surfaces and a plurality of the molding surfaces include optical surface molding surfaces 1a and 1b for molding optical surfaces on a molded article by at least one transfer and a non-optical surface molding surface 2a provided with the slit-like ventilation port 4 opened into a slit for ejecting gas to the resin material in the cavity during molding. One or more support members 4b holding slit width are provided to the opening part of the slit-like ventilation port 4 and the non-optical surface molding surface 2a having the slit-like ventilation port 4 has an auxiliary ventilation port 5 for ejecting the gas to the resin material in the cavity during molding near the support members 4b. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种注塑模具，其抑制在待模制的塑料光学元件中与狭缝状通风口的支撑构件对应的位置处的内部应变，并提供塑料光学元件，光学扫描仪和图像形成装置。解决方案：在注射模具10中，通过多个模制表面划分填充有塑料光学元件的树脂材料的模腔，并且多个模制表面包括用于模制光学的光学表面模制表面1a和1b 通过至少一个转印件将模制品上的表面和设置有狭缝状通气口4的非光学表面模制表面2a打开，以在模制期间向空腔中的树脂材料喷射气体。一个或多个保持狭缝宽度的支撑构件4b设置在狭缝状通气口4的开口部分，具有狭缝状通气口4的非光学表面成型面2a具有用于喷射气体的辅助通气口5 在靠近支撑构件4b的模制期间到模腔中的树脂材料。版权所有（C）2011，JPO＆INPIT

4. 发明专利

JP2009186513A Optical scanner and image forming apparatus with the optical scanner mounted 审中-公开
标题翻译：光学扫描仪和图像形成装置与光学扫描仪安装
公开(公告)号：JP2009186513A
公开(公告)日：2009-08-20
申请号：JP2008023211
申请日：2008-02-01
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： AOKI MIKI , HAYASHI HIDEKAZU , IWAMATSU AKIHIRO , TAKAHASHI TAKESHI
IPC分类号： G02B26/10 , B41J2/44 , G02B7/00 , H04N1/036 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide a compact optical scanner generating no scanning displacement, without having to use specific fixtures.
SOLUTION: In the optical scanner comprising a light source means, a deflecting and scanning optical deflecting system, an incident optical system, and a housing storing an image forming optical system, the image forming optical system includes a plastic optical element. The plastic optical element has a positioning reference in the optical axis direction and another positioning reference in a main scanning direction, and at least one or more are adhered and laminated, at a position of the same optical axis direction and the position of the same main scanning direction in the sub-scanning direction. The housing has does not have a mounting seat face that corresponds to the positioning reference of the optical axis direction.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供不产生扫描位移的紧凑型光学扫描仪，而不必使用特定的固定装置。解决方案：在包括光源装置，偏转和扫描光学偏转系统，入射光学系统和存储成像光学系统的壳体的光学扫描仪中，成像光学系统包括塑料光学元件。塑料光学元件在光轴方向上具有定位参考，并且在主扫描方向上具有另一个定位参考，并且至少一个或多个位于相同的光轴方向的位置和相同的主轴的位置沿副扫描方向的扫描方向。壳体没有与光轴方向的定位基准对应的安装座面。版权所有（C）2009，JPO＆INPIT

5. 发明专利

JP2011081369A Plastic optical element, optical scanning device, and image forming apparatus 审中-公开
标题翻译：塑料光学元件，光学扫描装置和图像形成装置
公开(公告)号：JP2011081369A
公开(公告)日：2011-04-21
申请号：JP2010200972
申请日：2010-09-08
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HAYASHI HIDEKAZU , OHASHI TAKAMICHI , TAKAHASHI TAKESHI , AOKI MIKI
IPC分类号： G02B26/10 , G02B3/04 , G02B13/00 , G02B13/18
CPC分类号： G02B26/125 , G02B3/005 , G03G15/0409
摘要： PROBLEM TO BE SOLVED: To provide a plastic optical element having high accuracy by improving optical performance, without cost increase caused by a processing method of the plastic optical element, a design change of a metal mode or the like, and to provide an optical scanning device and an image forming apparatus using the plastic optical element.
SOLUTION: The plastic optical element includes: a plurality of beam effective parts that focus light; and a connection part that connects at least two of the plurality of beam effective parts. At least two of the plurality of beam effective parts are connected in the sub-scanning direction through the connection part, on a virtual plane which is perpendicular to the main scanning direction when being served to the optical scanning device and parallel to the sub-scanning direction. The connection part forms a boundary line formed of a circular arc whose radius R of curvature is 2 or more, and has a contact with the beam effective part at each of both ends of the boundary line, and a tangent line at one end of each of both ends of the boundary line agrees with a tangent line at the beam effective part in contact with the one end.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：解决的问题：通过改善光学性能来提供具有高精度的塑料光学元件，而不会由于塑料光学元件的处理方法造成的成本增加，金属模式的设计变化等，并且提供光学扫描装置和使用塑料光学元件的图像形成装置。塑料光学元件包括：聚焦光的多个光束有效部分; 以及连接部，其连接所述多个梁有效部中的至少两个。多个光束有效部分中的至少两个在副扫描方向上通过连接部分连接在垂直于主扫描方向的虚拟平面上，当被提供给光学扫描装置并且平行于副扫描方向。连接部形成由曲率半径R为2以上的圆弧构成的边界线，并且与边界线的两端的每一端处的梁有效部分接触，并且在每个端部的切线边界线的两端与在一端接触的梁有效部分的切线一致。版权所有（C）2011，JPO＆INPIT

6. 发明专利

JP2011022320A Plastic optical element and optical unit 审中-公开
标题翻译：塑料光学元件和光学单元
公开(公告)号：JP2011022320A
公开(公告)日：2011-02-03
申请号：JP2009166743
申请日：2009-07-15
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： OHASHI TAKAMICHI , YAMANAKA YASUO , HAYASHI HIDEKAZU , TAKAHASHI TAKESHI , AOKI MIKI
IPC分类号： G02B3/00 , B29C33/42 , B29L11/00 , B41J2/44 , G02B26/10 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide a plastic optical element having high shape accuracy and low birefringence, and also to provide an optical unit having high performance using the plastic optical element.
SOLUTION: The plastic optical element 10 is formed by a metallic mold and composed of one or more optical faces 1 and non-optical faces 2. The plastic optical element has a convex portion 13 which projects to the non-optical face 2 side at least at a part of the boundary part between the non-optical face 2, which is adjacent to the optical face 1, and the optical face 1, and at least a part of the root of the non-optical face 2 side of the convex portion 13 has a sink 12 which is a defective transfer section from the metallic mold.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供具有高形状精度和低双折射的塑料光学元件，并且还提供使用塑料光学元件具有高性能的光学单元。塑料光学元件10由金属模具形成，由一个或多个光学面1和非光学面2构成。塑料光学元件具有凸出部分13，其突出到非光学面2 至少在与光学面1相邻的非光学面2与光学面1之间的边界部分的一部分以及非光学面2的至少一部分根部凸部13具有从金属模具形成的不良转印部的槽12。版权所有（C）2011，JPO＆INPIT

7. 发明专利

JP2010176062A Optical scanner and image forming apparatus 有权
标题翻译：光学扫描仪和图像形成装置
公开(公告)号：JP2010176062A
公开(公告)日：2010-08-12
申请号：JP2009021258
申请日：2009-02-02
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TAKAHASHI TAKESHI , HAYASHI HIDEKAZU , AOKI MIKI
IPC分类号： G02B26/10 , B41J2/44 , G02B3/06 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide an optical scanner, in which the deterioration of a beam spot diameter is effectively prevented when a light beam passes through a plastic lens diagonally, with respect to the optical axis of the plastic lens having an incomplete transfer section, and the deterioration in optical characteristic is prevented.
SOLUTION: The plastic lens 1 having the incomplete transfer section is used in the imaging optical system of the optical scanner; and when the plastic lens 1 is so set that the light beam passes diagonally with respect to the optical axis 3 of the plastic lens 1, at least one face 7 other than the light beam incident/emitting faces 5, 6 of the plastic lens is formed in parallel to a light beam transmitting direction 4 and the incomplete transfer section 2 is formed on the face 7, which is formed in parallel with the light-beam transmitting direction 4.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种光学扫描器，其中当光束对角地穿过塑料透镜时，相对于具有不完全的塑料透镜的光轴，可以有效地防止光束光斑直径的劣化转印部分，并且防止光学特性的劣化。
解决方案：具有不完全转印部分的塑料透镜1用于光学扫描仪的成像光学系统中; 并且当塑料透镜1被设定为使得光束相对于塑料透镜1的光轴3相对于对角线通过时，除了塑料透镜的光束入射/发射面5,6之外的至少一个面7是形成为平行于光束传播方向4，并且不完整传送部分2形成在与光束传播方向4平行形成的面7上。（C）2010，JPO＆INPIT

8. 发明专利

JP2010175664A Optical scanner, image forming device, and method for producing plastic lens 有权
标题翻译：光学扫描仪，图像形成装置以及用于生产塑料镜片的方法
公开(公告)号：JP2010175664A
公开(公告)日：2010-08-12
申请号：JP2009016169
申请日：2009-01-28
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HAYASHI HIDEKAZU , OHASHI TAKAMICHI , TAKAHASHI TAKESHI , AOKI MIKI
IPC分类号： G02B26/10 , B29C45/76 , B29K105/32 , B29L11/00 , B41J2/44 , G02B3/06 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide a plastic lens used for an optical image forming system of an optical scanner, wherein an external dimension (a) in a secondary scanning direction and a lens thickness (b) in a light transmitting direction, of the plastic lens satisfy a/b>1, and distortion of the plastic lens is significantly reduced and variation in the secondary scanning direction is significantly reduced when a defective transfer section, which is concave, is provided in a part other than a transfer surface.
SOLUTION: The defective transfer sections, which are concave, are provided on the opposing both sides other than the two transfer surfaces. A deviation between depths of the concave d1(x) and d2(x) in the defective transfer sections provided on the opposing both sides, |d1(x)-d2(x)|, is set to be 5% or less of the external dimension (a) in the secondary scanning direction, at each location (x) in a principle scanning direction.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种用于光学扫描仪的光学成像系统的塑料透镜，其中在副扫描方向上的外部尺寸（a）和在透光方向上的透镜厚度（b）的塑料透镜满足a /b≥1，并且当在除转印表面之外的部分中设置凹陷的不良转印部时，塑料透镜的变形显着减小，并且副扫描方向的变化显着降低。
解决方案：凹陷的缺陷转移部分设置在除两个转印表面之外的相对的两侧上。在相对的两侧（¾d1（x）-d2（x）¾）上设置的缺陷转移部分中的凹陷d1（x）和d2（x）的深度之间的偏差设定为外部的5％尺寸（a）在副扫描方向上，在原始扫描方向上的每个位置（x）处。版权所有（C）2010，JPO＆INPIT

9. 发明专利

JP2010060962A Plastic optical element, optical scanner and image forming apparatus 审中-公开
标题翻译：塑料光学元件，光学扫描仪和图像形成装置
公开(公告)号：JP2010060962A
公开(公告)日：2010-03-18
申请号：JP2008227879
申请日：2008-09-05
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HAYASHI HIDEKAZU , OHASHI TAKAMICHI , TAKAHASHI TAKESHI , AOKI MIKI
IPC分类号： G02B3/00 , B29C45/26 , B29C45/37 , B29C45/56 , B29L11/00 , G02B13/00
摘要： PROBLEM TO BE SOLVED: To provide a plastic optical element of high precision, which can be manufactured at the same production cost as before even when being thick-walled and unevenly thick and has an excellent lens surface shape, wherein internal strain is homogeneously reduced to achieve high optical performance; and to provide an optical scanner and an image forming apparatus having the plastic optical element.
SOLUTION: The plastic optical element provided at a focusing optical system of the optical scanner has two transferring faces which are formed by producing resin pressure in a resin in a cavity of a metallic mold having a surface to be transferred and then transferring the surface to be transferred and which become an incident surface and an emission surface of light beams and further has non transferring face which is formed by incompletely transferring a cavity shape of the metallic mold at a portion except the transferring face. Deviation of recessing amount of the non transferring face in a light beam transmission region is 0.8 mm or less. Further, the optical scanner and the image forming apparatus having the plastic optical element are also provided.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种高精度的塑料光学元件，其可以以相同的制造成本制造，即使是厚壁不均匀且具有优异的透镜表面形状，其中内部应变为均匀降低，达到高光学性能; 并提供具有塑料光学元件的光学扫描仪和图像形成装置。解决方案：设置在光学扫描仪的聚焦光学系统处的塑料光学元件具有两个转印面，其通过在具有待转印表面的金属模具的空腔中的树脂中产生树脂压力而形成，然后将表面被转印，并且成为光束的入射表面和发射表面，并且还具有通过在除了转印面之外的部分不完全转印金属模的空腔形状而形成的非转印面。光束透射区域中的非转印面的凹陷量的偏差为0.8mm以下。此外，还提供了具有塑料光学元件的光学扫描器和图像形成装置。版权所有（C）2010，JPO＆INPIT

10. 发明专利

JP2010060637A Plastic optical element, optical scanning apparatus, and image forming apparatus 有权
标题翻译：塑料光学元件，光学扫描装置和图像形成装置
公开(公告)号：JP2010060637A
公开(公告)日：2010-03-18
申请号：JP2008223630
申请日：2008-09-01
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TAKAHASHI TAKESHI , HAYASHI HIDEKAZU , AOKI MIKI , FURUSAWA MASASHI
IPC分类号： G02B3/00 , B29C45/26 , B29L11/00 , B41J2/44 , G02B7/00 , G02B26/10 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide a compact, inexpensive and long plastic optical element in which the shape accuracy of an optical functional face is improved and the degradation of optical characteristic is reduced, to provide an optical scanning apparatus with the plastic optical element, and to provide an image forming apparatus.
SOLUTION: The long plastic optical element 10 wherein a thickness in the direction in which a light beam passes through is smaller than the thickness in a subscanning direction, includes: the long optical functional face 12 which is formed by generating a resin pressure in the resin in the cavity of a metal mold having a face to be transferred and transferring the face to be transferred; and long ribs 11 located adjacent to the optical functional face 12 by arranging the longitudinal directions in parallel to each other, wherein at least one of the ribs 11 has: a recess 13 recessed to the side of the optical functional face 12; and an incomplete transferring face provided on the bottom of the recess 13 and having a cavity shape of the metal mold. An optical scanning apparatus with the plastic optical element and an image forming apparatus are also provided.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种小型，便宜且长的塑料光学元件，其中光学功能面的形状精度得到改善并且光学特性的劣化降低，以提供具有塑料光学的光学扫描装置元件，并提供图像形成装置。解决方案：其中光束通过的方向上的厚度小于副扫描方向上的厚度的长塑料光学元件10包括：通过产生树脂压力形成的长光学功能面12 在具有要转印的面的金属模具的空腔中的树脂中，并转移要被转印的面; 以及通过相互平行地布置纵向方向而与光学功能面12相邻的长肋11，其中至少一个肋11具有：凹进到光学功能面12侧的凹部13; 以及设置在凹部13的底部并具有金属模的空腔形状的不完全转印面。还提供了具有塑料光学元件和图像形成装置的光学扫描装置。版权所有（C）2010，JPO＆INPIT

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