公开(公告)号：US08274741B2

公开(公告)日：2012-09-25

申请号：US12914408

申请日：2010-10-28

申请人： Ryuta Koizumi ,  Yujiro Nomura ,  Takeshi Sowa

发明人： Ryuta Koizumi ,  Yujiro Nomura ,  Takeshi Sowa

IPC分类号： G02B27/10 ,  G03G15/04 ,  B41J15/14

CPC分类号： G02B5/001 ,  B41J2/451

摘要： An exposure head, includes: a lens array that includes lenses that are arranged in a first direction and in a second direction orthogonal to the first direction; and a light emitting element substrate that is provided with light emitting elements that emit lights to be imaged by the lenses, wherein a relationship defined by a following formula: 1

摘要翻译： 曝光头包括：透镜阵列，其包括沿与第一方向正交的第一方向和第二方向布置的透镜; 以及发光元件基板，其具有发射由所述透镜成像的光的发光元件，其中满足以下公式所定义的关系：1

公开(公告)号：US07889222B2

公开(公告)日：2011-02-15

申请号：US12362382

申请日：2009-01-29

申请人： Ryuta Koizumi ,  Yujiro Nomura ,  Takeshi Sowa

发明人： Ryuta Koizumi ,  Yujiro Nomura ,  Takeshi Sowa

IPC分类号： B41J15/14 ,  B41J27/00

CPC分类号： B41J2/451

摘要： A line head, includes: a head substrate that includes a first light emitting element and a second light emitting element; and a lens array that includes a first positive lens that images a light emitted from the first light emitting element on a specified plane and has a lens surface of a free-form surface, and a second positive lens that images a light emitted from the second light emitting element on the specified plane and has a lens surface of a free-form surface, each of the lens surfaces of the first and the second positive lenses having focal points with different focal lengths.

摘要翻译： 行头包括：包括第一发光元件和第二发光元件的头基板; 以及透镜阵列，其包括第一正透镜，其将从所述第一发光元件发射的光在指定平面上成像并具有自由曲面的透镜表面;以及第二正透镜，其对从所述第二发光元件发出的光进行成像 发光元件在指定平面上并且具有自由曲面的透镜表面，第一和第二正透镜的每个透镜表面具有不同焦距的焦点。

公开(公告)号：US08355185B2

公开(公告)日：2013-01-15

申请号：US12893364

申请日：2010-09-29

申请人： Takeshi Sowa ,  Ken Ikuma ,  Ryuta Koizumi ,  Nozomu Inoue

发明人： Takeshi Sowa ,  Ken Ikuma ,  Ryuta Koizumi ,  Nozomu Inoue

IPC分类号： H04N1/04

CPC分类号： G03G15/326 ,  B41J2/451 ,  G03G15/04072 ,  G03G15/0409 ,  G03G15/041 ,  G03G15/0415 ,  G03G2215/0456

摘要： Disclosed is an exposure head including a light emitting element array including light emitting elements disposed in a first direction, a light blocking member including an aperture stop through which lights emitted from the light emitting elements pass, and an image forming optical system that makes an image by using the lights having passed through the light blocking member. An absolute value of a magnification in the first direction of the image forming optical system is equal to or more than 0.7 times and is equal to or less than 0.8 times.

摘要翻译： 公开了一种曝光头，其包括发光元件阵列，该发光元件阵列包括沿第一方向设置的发光元件，遮光构件，其包括孔径光阑，通过该孔径光阑从发光元件射出的光通过;以及图像形成光学系统， 通过使用已经通过遮光构件的光。 图像形成光学系统的第一方向上的放大率的绝对值等于或大于0.7倍并且等于或小于0.8倍。

公开(公告)号：US08405700B2

公开(公告)日：2013-03-26

申请号：US13074647

申请日：2011-03-29

申请人： Ryuta Koizumi ,  Takeshi Sowa ,  Ken Ikuma

发明人： Ryuta Koizumi ,  Takeshi Sowa ,  Ken Ikuma

IPC分类号： B41J15/14 ,  B41J27/00

CPC分类号： B41J2/451 ,  G03G15/04054 ,  G03G15/326

摘要： An exposure head includes a light emitting element and a imaging optical system having a first region and a second region and contrived such that a slope of a long dimension of a spot diagram formed by light emitted from the light emitting element that passes through the first region is different from a slope of a long dimension of a spot diagram formed by light emitted from the light emitting element that passes through the second region.

摘要翻译： 曝光头包括发光元件和具有第一区域和第二区域的成像光学系统，并且被设计为使得从通过第一区域的发光元件发射的光形成的光斑图的长尺寸的斜率 与由通过第二区域的发光元件发出的光所形成的光斑图的长尺寸的斜率不同。

公开(公告)号：US08179416B2

公开(公告)日：2012-05-15

申请号：US12688697

申请日：2010-01-15

申请人： Takeshi Sowa ,  Yujiro Nomura ,  Ken Ikuma

发明人： Takeshi Sowa ,  Yujiro Nomura ,  Ken Ikuma

IPC分类号： B41J2/44 ,  G03G15/04

CPC分类号： G03G15/326 ,  G03G15/04072

摘要： An image forming apparatus includes a line head that performs exposure on a latent image carrier to form a latent image. The line head includes first and second light-emitting elements arranged in a first direction; and an optical system that images light emitted from the first and second light-emitting elements. When a difference between the maximum and minimum values of a longitudinal aberration of the optical system is G, a distance in the first direction between centers of geometry of the first and second light-emitting elements is Pel, and an optical magnification of the optical system is β, a relation of G>|β|·Pel is satisfied.

摘要翻译： 图像形成装置包括对潜像载体进行曝光以形成潜像的行头。 线头包括沿第一方向布置的第一和第二发光元件; 以及对从第一和第二发光元件发射的光进行成像的光学系统。 当光学系统的纵向像差的最大值和最小值之间的差为G时，第一和第二发光元件的几何形状中心之间的第一方向上的距离为Pel，光学系统的光学倍率 是＆bgr; G> |＆bgr; |·Pel的关系是满意的。

公开(公告)号：US08089499B2

公开(公告)日：2012-01-03

申请号：US12403689

申请日：2009-03-13

申请人： Takeshi Sowa ,  Yujiro Nomura ,  Ken Ikuma

发明人： Takeshi Sowa ,  Yujiro Nomura ,  Ken Ikuma

IPC分类号： B41J2/45

CPC分类号： B41J2/451

摘要： An exposure head, includes: a substrate that is provided with a first light emitting element, a second light emitting element that is arranged at one side of the first light emitting element in a first direction and a third light emitting element that is arranged at the one side of the second light emitting element in the first direction, the first light emitting element and the second light emitting element being arranged at a first distance from each other in the first direction, the second light emitting element and the third light emitting element being arranged at a second distance, which is different from the first distance, from each other in the first direction; and an imaging optical system that images light from the first, the second and the third light emitting elements.

摘要翻译： 曝光头包括：设置有第一发光元件的基板，在第一方向上布置在第一发光元件的一侧的第二发光元件和布置在第一发光元件的第三发光元件 在第一方向上的第二发光元件的一侧，第一发光元件和第二发光元件沿第一方向彼此相隔第一距离，第二发光元件和第三发光元件是 以与所述第一距离不同的第二距离布置在所述第一方向上; 以及成像光学系统，其对来自第一，第二和第三发光元件的光进行成像。

公开(公告)号：US07929008B2

公开(公告)日：2011-04-19

申请号：US12353824

申请日：2009-01-14

申请人： Takeshi Sowa ,  Nozomu Inoue ,  Yujiro Nomura

发明人： Takeshi Sowa ,  Nozomu Inoue ,  Yujiro Nomura

IPC分类号： B41J15/14 ,  B41J27/00

CPC分类号： G02B3/0062 ,  G02B3/0031 ,  G02B3/0056 ,  G02B26/10 ,  H04N1/02835 ,  H04N1/12 ,  H04N2201/02431

摘要： A line head includes: a first lens formed from a resin and on a glass substrate; and a light emitting element substrate that has light emitting elements arranged in a first direction, wherein a cross section of the first lens taken in the first direction and including an optical axis of the first lens has a configuration wherein a curvature of the first lens at the optical axis has a larger absolute value than a curvature of an outer peripheral portion of the first lens.

摘要翻译： 线头包括：由树脂形成的第一透镜和玻璃基板; 以及发光元件基板，其具有沿第一方向配置的发光元件，其中，所述第一透镜在所述第一方向上截取并且包括所述第一透镜的光轴的截面具有以下结构，其中所述第一透镜的曲率在 光轴的绝对值比第一透镜的外周部的曲率大。

公开(公告)号：US08085470B2

公开(公告)日：2011-12-27

申请号：US12344084

申请日：2008-12-24

申请人： Takeshi Sowa ,  Nozomu Inoue ,  Yujiro Nomura

发明人： Takeshi Sowa ,  Nozomu Inoue ,  Yujiro Nomura

IPC分类号： G02B27/10

CPC分类号： B41J2/451 ,  G02B3/0006 ,  H04N5/2254

摘要： A line head, includes: a lens array that includes a first lens, a second lens and a light transmissive substrate on which the first lens and the second lens are arranged in a first direction; and a light emitting element substrate on which light emitting elements are arranged in the first direction, wherein the first lens is formed such that, in a cross section in the first direction including an optical axis of an imaging optical system comprised of the first lens, a curvature of the first lens at an outer peripheral portion has a sign opposite to that of a curvature of the first lens on the optical axis or has a smaller absolute value than the curvature of the first lens on the optical axis.

摘要翻译： 行头包括：透镜阵列，其包括第一透镜，第二透镜和透光基板，第一透镜和第二透镜在其上沿第一方向布置; 以及发光元件基板，其上沿着第一方向布置有发光元件，其中第一透镜形成为使得在包括由第一透镜构成的成像光学系统的光轴的第一方向的截面中， 第一透镜在外周部分的曲率具有与光轴上的第一透镜的曲率相反的符号，或者具有比第一透镜在光轴上的曲率更小的绝对值。

公开(公告)号：US20100321462A1

公开(公告)日：2010-12-23

申请号：US12818129

申请日：2010-06-17

申请人： Takeshi Sowa ,  Ken Ikuma

发明人： Takeshi Sowa ,  Ken Ikuma

IPC分类号： B41J15/14

CPC分类号： B41J2/451 ,  G03G15/04045 ,  G03G15/326

摘要： An image forming apparatus includes an image carrier having a curvature in a first direction; and an exposure head including a first light emitting element that emits a light having a wavelength λ11 and a light having a wavelength λ12, a first optical system that converges each of the light emitted from the first light emitting element onto the image carrier, a second light emitting element, and a second optical system that converges a light emitted from the second light emitting element onto the image carrier, wherein a position at which the first optical system converges each of the light and a position at which the second optical system converges the light are different from each other with respect to the first direction, wherein the first optical system focuses the light having the wavelength λ11 at an imaging position P11 and focuses the light having the wavelength λ12 at an imaging position P12, the imaging position P11 and the imaging position P12 being different from each other with respect to an optical axis direction of the first optical system, and wherein a distance Δ1 between the imaging position P11 and the imaging position P12 with respect to the optical axis direction of the first optical system is equal to or larger than a distance d between an intersection point I1 and an intersection point I2 with respect to the optical axis direction of the first optical system, the intersection point I1 being a point at which the optical axis of the first optical system intersects the image carrier, the intersection point I2 being a point at which an optical axis of the second optical system intersects the image carrier.

摘要翻译： 图像形成装置包括具有第一方向的曲率的图像载体; 以及包括发射具有波长λ11的光的第一发光元件和具有波长λ12的光的曝光头，将从第一发光元件发射的每个光会聚到图像载体上的第一光学系统，第二 发光元件和第二光学系统，其将从第二发光元件发射的光会聚到图像载体上，其中第一光学系统会聚各个光的位置和第二光学系统收敛的位置 光相对于第一方向彼此不同，其中第一光学系统将具有波长λ11的光聚焦在成像位置P11，并将具有波长λ12的光聚焦在成像位置P12，成像位置P11和 成像位置P12相对于第一光学系统的光轴方向彼此不同，并且其中， 成像位置P11与成像位置P12之间的距离d相对于第一光学系统的光轴方向的距离d等于或大于相对于光学系统的交点I1和交点I2之间的距离d 第一光学系统的轴方向，交点I1是第一光学系统的光轴与图像载体相交的点，交点I2是第二光学系统的光轴与图像相交的点 载体

公开(公告)号：US20100321658A1

公开(公告)日：2010-12-23

申请号：US12818126

申请日：2010-06-17

申请人： Takeshi Sowa ,  Ken Ikuma

发明人： Takeshi Sowa ,  Ken Ikuma

IPC分类号： G03B27/52

CPC分类号： G03B27/52

摘要： An image forming apparatus includes an image carrier; and an exposure head including a light emitting element that emits a light having a first wavelength and a light having a second wavelength, and an optical system that focuses the light having the first wavelength at a first imaging position and focuses the light having the second wavelength at a second imaging position that is different from the first imaging position with respect to the first direction, the optical system having an optical axis extending in the first direction, wherein a surface of the image carrier is located between the first imaging position and the second imaging position.

摘要翻译： 图像形成装置包括图像载体; 以及包括发射具有第一波长的光的发光元件和具有第二波长的光的曝光头，以及将具有第一波长的光聚焦在第一成像位置并将具有第二波长的光聚焦的光学系统 在与第一成像位置相对于第一方向不同的第二成像位置处，光学系统具有在第一方向上延伸的光轴，其中，图像载体的表面位于第一成像位置和第二成像位置之间 成像位置。