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公开(公告)号：US20230350322A1
公开(公告)日：2023-11-02
申请号：US18210849
申请日：2023-06-16
发明人： Yasutomo Furuta
IPC分类号： G03G15/043
CPC分类号： G03G15/043 , G03G2215/0407
摘要： An image forming apparatus includes: an exposure head including a light emitting portion that includes a first electrode layer including a plurality of electrodes that are two-dimensionally arranged in a main scanning direction and a sub-scanning direction, a light emitting layer stacked on the first electrode layer, and a second electrode layer through which light is transmissible; and a controller configured to control a voltage applied to each of the plurality of electrodes in such a way that the light emitting layer emits light, in which the plurality of electrodes for forming an identical pixel are arranged in such a way that the electrodes partially overlap each other when viewed from the rotation direction, and an inter-centroid distance of the plurality of electrodes in the rotational axis direction is equal in the rotational axis direction, and d3 = W1/n (n is a natural number of 2 or more), in which W1 [mm] is a width of the electrode in the rotational axis direction, n is the number of electrodes for forming the identical pixel, and d3 [mm] is the equal inter-centroid distance in the rotational axis direction.
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公开(公告)号：US10852657B2
公开(公告)日：2020-12-01
申请号：US16433449
申请日：2019-06-06
发明人： Yasutomo Furuta
IPC分类号： G03G15/04 , H04N1/387 , G03G15/043
摘要： An image forming apparatus includes an exposure head including light emitting elements arranged in an intersecting direction intersecting with a rotation direction of a photosensitive member to form an image at a first resolution corresponding the light emitting elements in the intersecting direction; a data generating unit configured to generate pixel data corresponding to a second resolution higher than the first resolution associating with positions of the pixel data; a correction unit configured to correct associations between the positions and the pixel data to adjust a position of an image in the intersecting direction; a conversion unit configured to convert the pixel data corresponding to the second resolution to pixel data corresponding to the first resolution; and a drive unit configured to drive the light emitting elements based on the pixel data corresponding to the first resolution.
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公开(公告)号：US10397437B2
公开(公告)日：2019-08-27
申请号：US15461206
申请日：2017-03-16
发明人： Yasutomo Furuta
IPC分类号： H04N1/23 , H04N1/00 , H04N1/113 , H04N1/06 , H04N1/29 , H04N1/50 , G03G15/04 , H04N1/409 , G03G15/043
摘要： An image forming apparatus, including: a light source including a plurality of light emitting points and configured to emit light beams; a photosensitive member configured to rotate in a rotation direction so that a latent image is formed thereon with the light beams; a rotary polygon mirror configured to rotate around a rotation axis and having a plurality of mirror faces each configured to deflect the light beams so that the photosensitive member is scanned with the light beams; a detector configured to detect temperature; and a correction unit configured to correct image data of an input image by using a deviation amount, in the rotation direction of the photosensitive member, of the light beams deflected by each of the plurality of mirror faces, wherein the correction unit obtains the deviation amount according to the temperature detected by the detector.
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公开(公告)号：US10317813B2
公开(公告)日：2019-06-11
申请号：US15782497
申请日：2017-10-12
发明人： Yasutomo Furuta
IPC分类号： G03G15/043 , G02B26/12 , G03G15/00 , H04N1/113 , G02B26/08
摘要： An image forming apparatus includes a control unit: starting up a rotary polygon mirror based on a first signal output by a driving unit thereof; causing a light source to emit a laser-beam while controlling a rotational speed of the rotary polygon mirror based on the first signal to acquire a second signal output from a detecting unit of the laser-beam; turning off the light source after acquiring a phase relation between the first and second signals; causing a charging unit to charge a photosensitive member; making the laser-beam to enter onto the detecting unit without exposing the photosensitive member based on the phase relation in response to the rotational speed reaching a target speed; controlling the rotational speed based on the second signal in response to the laser-beam being entered; and starting image formation in response to the rotational speed converging within a predetermined range including the target speed.
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公开(公告)号：US09860422B2
公开(公告)日：2018-01-02
申请号：US15210365
申请日：2016-07-14
发明人： Izuru Horiuchi , Yasutomo Furuta , Ryuichi Araki
IPC分类号： G06K15/00 , H04N1/405 , H04N1/06 , H04N1/113 , G03G15/043
CPC分类号： H04N1/4052 , G03G15/043 , H04N1/06 , H04N1/113 , H04N1/50 , H04N2201/0094
摘要： A correction method for an image forming apparatus including a light source including light emitting points, a photosensitive member configured to rotate in a first direction, and a deflecting unit configured to deflect light beams emitted from the light source in a second direction orthogonal to the first direction, the correction method includes: a first correction step of correcting sparseness and denseness of density in the first direction by moving a predetermined pixel in the first direction, and causing a pixel value of the predetermined pixel to be output or not to be output in accordance with movement of the predetermined pixel; and a second correction step of correcting the pixel value of the predetermined pixel by moving the pixel value of the predetermined pixel in the second direction so that a pixel value is caused to be output or not to be output with a plurality of continuous pixels.
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公开(公告)号：US20150346028A1
公开(公告)日：2015-12-03
申请号：US14655295
申请日：2014-01-29
发明人： Yasutomo Furuta
CPC分类号： G01J3/0286 , G01J3/502 , G03G15/043
摘要： A measurement apparatus comprises: a light emitting means for emitting a light; a light receiving means for receiving a reflected light from a measurement target, the light receiving means comprises a plurality of light-receiving elements; a detection means for detecting a temperature of the light emitting means; a determination means for determining a correspondence between each light-receiving element of the light receiving means and a wavelength of the reflected light from the measurement target based on a result of receiving the reflected light from a reference element and the temperature of the light emitting means detected by the detection means; and an output means for outputting spectral reflectance information for the measurement target based on a result of receiving the reflected light from the measurement target and the correspondence determined by the determination means.
摘要翻译： 测量装置包括：发光装置，用于发光; 用于接收来自测量对象物的反射光的光接收装置，所述光接收装置包括多个光接收元件; 用于检测发光装置的温度的检测装置; 确定装置，用于基于接收来自参考元件的反射光的结果和发光装置的温度来确定光接收装置的每个光接收元件与来自测量对象物的反射光的波长之间的对应关系 由检测装置检测; 以及输出装置，用于基于接收来自测量对象的反射光的结果和由确定装置确定的对应来输出用于测量目标的光谱反射率信息。
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公开(公告)号：US20150130883A1
公开(公告)日：2015-05-14
申请号：US14396178
申请日：2013-04-22
发明人： Yasutomo Furuta , Hiroshi Nakahata
IPC分类号： B41J2/385
CPC分类号： G03G15/043
摘要： An image forming apparatus which is configured to expose a photosensitive member to light beams emitted from a plurality of light emitting elements, generates a plurality of BD signals by a plurality of laser light beams, and controls timings at which the plurality of light emitting elements emits the light beams based on a difference between timings at which the BD signals are generated.
摘要翻译： 一种图像形成装置，其被配置为将感光构件暴露于从多个发光元件发射的光束，通过多个激光束产生多个BD信号，并且控制多个发光元件发射的定时 基于产生BD信号的定时之间的差异的光束。
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公开(公告)号：US08953009B2
公开(公告)日：2015-02-10
申请号：US13752603
申请日：2013-01-29
发明人： Yasutomo Furuta
CPC分类号： G03G15/043 , G03G13/04 , G03G15/04054
摘要： An image forming apparatus using the laser scan method or the LED method, which is capable of reducing a variation of spot diameter with a simple mechanism, and of forming a high-quality image by adjusting the density depending on the image resolution with a low cost. The image forming apparatus forms an image by developing an electrostatic latent image formed by irradiating a charged photoconductor with light emitted from a light source with developer. A detecting unit detects a distance between an attention pixel and an adjacent image that is adjacent to an image including the attention pixel across a white background. An adjustment unit adjusts a density of the attention pixel based on the distance measured with the detecting unit and a spot diameter of the light on a surface of the photoconductor.
摘要翻译： 使用激光扫描方法或LED方法的图像形成装置，其能够以简单的机构减小光斑直径的变化，并且通过以低成本调整依赖于图像分辨率的浓度来形成高质量图像 。 图像形成装置通过将从光源发出的光与显影剂照射的电荷感光体照射形成的静电潜像来形成图像。 检测单元检测与包括穿过白色背景的关注像素的图像相邻的关注像素和相邻图像之间的距离。 调整单元基于用检测单元测量的距离和光导体表面上的光的光斑直径来调整注意像素的浓度。
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9.发明授权Light scanning apparatus and image forming apparatus including light scanning apparatus 有权光扫描装置和包括光扫描装置的图像形成装置公开(公告)号：US08917305B2
公开(公告)日：2014-12-23
申请号：US13860383
申请日：2013-04-10
IPC分类号： B41J15/14 , B41J27/00 , G03G15/041 , G03G15/043
CPC分类号： G03G15/0415 , G03G15/043
摘要： A resin BD lens having a property of refracting a light beam in a direction corresponding to a main scanning direction may cause a variation in generation timing difference among a plurality of horizontal synchronization signals and accordingly degrade accuracy to correct the starting position of an electrostatic latent image. The present invention uses a glass BD lens having a property of refracting a light beam in a direction corresponding to the main scanning direction.
摘要翻译： 具有在与主扫描方向对应的方向折射光束的性质的树脂BD透镜可能导致多个水平同步信号之间的产生定时差异的变化，因此降低精度以校正静电潜像的开始位置 。 本发明使用具有在与主扫描方向对应的方向折射光束的性质的玻璃BD透镜。
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公开(公告)号：US20140056601A1
公开(公告)日：2014-02-27
申请号：US13970452
申请日：2013-08-19
发明人： Yasutomo Furuta
IPC分类号： G03G15/00
CPC分类号： G03G15/5062 , G03G21/20
摘要： An image forming apparatus includes a measurement unit configured to irradiate a measurement image with light, and measure the light reflected from the measurement image, a white reference plate disposed in a position opposite to the measurement unit, a correction unit configured to correct a measurement result of the measurement image, based on a measurement result of the white reference plate acquired by the measurement unit, and a temperature detection unit configured to detect temperature in a vicinity of the measurement unit, wherein the correction unit corrects, in a case where a difference between a temperature detected by the temperature detection unit and a temperature shown when previously measuring the white reference plate is less than a predetermined value, a measurement result of the measurement image using a previous measurement result of the white reference plate without measuring the white reference plate with the measurement unit.
摘要翻译： 图像形成装置包括：测量单元，被配置为用光照射测量图像，并测量从测量图像反射的光;布置在与测量单元相对的位置的白色参考板;校正单元，被配置为校正测量结果 基于由测量单元获取的白色参考板的测量结果，以及温度检测单元，被配置为检测测量单元附近的温度，其中校正单元在差异 在由温度检测单元检测到的温度与先前测量白色参考板所示的温度之间的温度小于预定值时，测量图像的测量结果使用白色参考板的先前测量结果而不测量白色参考板 与测量单位。
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