公开(公告)号：US20240264550A1

公开(公告)日：2024-08-08

申请号：US18430226

申请日：2024-02-01

申请人： CANON KABUSHIKI KAISHA

发明人： HAYATO KATO ,  KAZUMI KIMURA ,  HIROKI YOSHIDA

IPC分类号： G03G15/041 ,  G03G15/04

CPC分类号： G03G15/0415 ,  G03G15/0409 ,  G03G2215/0404

摘要： Provided is an apparatus including: a deflecting unit configured to deflect a light flux from a light source to scan a scanned surface in a main scanning direction while rotating at a constant angular velocity; and an optical system configured to guide the deflected light flux onto the scanned surface, wherein, in a main scanning cross section including an optical axis of the optical system, a width of the light flux on a deflecting surface of the deflecting unit is larger than a width of the deflecting surface, wherein a scanning speed of the light flux on the scanned surface is highest at an on-axis image height, and wherein an absolute value of a scanning acceleration of the light flux on the scanned surface increases monotonically from the on-axis image height toward an outermost off-axis image height.

公开(公告)号：US20210333725A1

公开(公告)日：2021-10-28

申请号：US17226156

申请日：2021-04-09

申请人： Ricoh Company, Ltd.

发明人： Atsushi NAKAMOTO ,  Seiichi KOGURE ,  Daisuke HAMADA ,  Takuya AKIYAMA ,  Yuuki AOKI ,  Yutaka GOTO

IPC分类号： G03G15/041 ,  G03G15/16

摘要： An image forming apparatus includes an image bearer, a transfer rotator, an adjuster, and circuitry. The image bearer bears a toner image. The transfer rotator contacts the image bearer to form a transfer nip between the transfer rotator and the image bearer. The transfer rotator transfers the toner image from the image bearer onto a sheet conveyed to the transfer nip. The adjuster adjusts at least one of a relative difference in linear velocity of the transfer rotator to the image bearer at the transfer nip and a relative contact pressure of the transfer rotator to the image bearer at the transfer nip. Based on a difference in image magnification, in a direction of conveyance of the sheet, of toner images transferred onto surfaces of one or more sheets conveyed to the transfer nip, the circuitry causes the adjuster to reduce the difference in image magnification.

公开(公告)号：US10795280B2

公开(公告)日：2020-10-06

申请号：US16738567

申请日：2020-01-09

申请人： CANON KABUSHIKI KAISHA

发明人： Hirotaka Seki

IPC分类号： G03G15/043 ,  G03G21/20 ,  G03G15/041 ,  G03G15/04

摘要： An image forming apparatus includes a photosensitive drum; an exposure portion including light emitting elements; and a controller configured to control activation of the light emitting elements. The exposure portion includes array chips, each including the light emitting elements, a substrate on which the array chips are arranged in a staggered fashion in the rotational axis direction, and a substrate temperature detecting portion. The controller includes a correcting portion configured to correct magnification of the image data with respect to the rotational axis direction depending on a length fluctuation amount of the substrate calculated on the basis of the temperature detected by the temperature detecting portion, and a converting portion. Depending on magnification correction by the correcting portion, the image data is arranged by the converting portion on the basis of the mounting positions of the array chips.

公开(公告)号：US10732536B2

公开(公告)日：2020-08-04

申请号：US16561849

申请日：2019-09-05

申请人： CANON KABUSHIKI KAISHA

发明人： Junichi Goda

IPC分类号： G03G15/043 ,  G03G15/04 ,  G03G15/041 ,  G02B26/12

摘要： An information processing apparatus is configured to correctly detect a polygon face of a mirror being scanned even when noise occurs in a synchronization signal. The information processing apparatus is connected to an image forming apparatus including a laser light source configured to receive image data and output light; a photosensitive member; a polygon mirror, which has a plurality of reflection faces, and is configured to rotate to deflect a laser beam through use of the plurality of reflection faces, to thereby scan the photosensitive member; and a generator configured to generate a marking BD (beam detection) signal based on the deflected laser beam. The information processing apparatus receives a marking signal and determines whether or not the received marking signal is a signal corresponding to a specific reflection face among the reflection faces of the polygon mirror.

公开(公告)号：US09846398B2

公开(公告)日：2017-12-19

申请号：US15433522

申请日：2017-02-15

申请人： Konica Minolta, Inc.

发明人： Hironori Akashi ,  Masahiro Kouzaki

IPC分类号： G03G15/04 ,  G03G15/041 ,  G03G15/00

CPC分类号： G03G15/5033 ,  G03G15/04018 ,  G03G15/04045 ,  G03G15/041 ,  G03G15/5041 ,  G03G15/55 ,  G03G15/75 ,  G03G15/751 ,  G03G15/752 ,  G03G2215/0132

摘要： An image forming apparatus which forms an image on a medium on the basis of an input image signal includes: an image carrier configured to carry a developed toner image transferred to the medium on a photoreceptor layer; a contact member arranged so as to be in contact with the surface of the photoreceptor layer; a trace pattern generating unit configured to generate a trace pattern indicating specific information on the image forming apparatus; a composition unit configured to add the trace pattern to the image signal; and an acquiring unit configured to acquire information on the thickness of the photoreceptor layer of the image carrier, wherein the trace pattern is used for arranging a plurality of image areas at respective positions, and the trace pattern generating unit is configured to generate the trace pattern with the image area whose size is reduced in accordance with reduction of the thickness of the photoreceptor layer.

公开(公告)号：US09618874B2

公开(公告)日：2017-04-11

申请号：US14853076

申请日：2015-09-14

申请人： Tatsuya Miyadera

发明人： Tatsuya Miyadera

IPC分类号： H04N1/04 ,  G03G15/043 ,  G03G15/041

CPC分类号： G03G15/043 ,  G03G15/0415 ,  G03G2215/0129

摘要： A write control apparatus is for receiving one page worth of image data and performing processes, and writing an image by exposing a photoconductor. The write control apparatus includes a write control unit including a process function unit for performing the processes; a computer for generating setting values of parameters used by the process function unit; and first and second memories for storing the setting values. When the computer sends a trigger signal to start image formation to the write control unit, the second memory stores one page worth of the setting values stored in the first memory, and the setting values of a desired page among a plurality of pages worth of the setting values stored in the second memory are applied to operations by the process function unit when the write control unit controlled by the computer writes an image of the desired page.

公开(公告)号：US09122190B2

公开(公告)日：2015-09-01

申请号：US14495034

申请日：2014-09-24

申请人： CANON KABUSHIKI KAISHA

发明人： Hiroki Sato

IPC分类号： B41J2/385 ,  B41J2/47 ,  G03G15/041 ,  G03G15/04

CPC分类号： G03F7/70191 ,  G03G15/04036 ,  G03G15/0415

摘要： An image forming apparatus which makes it possible to grasp such settings of a phase and a main scanning magnification of laser beams as reduce occurrence of moire, by visually checking a plurality of pattern images. Pattern images are formed using a laser beam irradiated from a reference light source and a laser beam irradiated from an adjustment target light source for which each of different phase values is set as a phase setting value. A phase relationship between the phases of the laser beams is adjusted based on the pattern images. Pattern images are formed using a laser beam irradiated from the adjustment target light source for which each of different magnification values is set as a magnification setting value. The magnification of the laser beams is adjusted based on these pattern images.

摘要翻译： 通过目视检查多个图案图像，能够通过图像形成装置来掌握激光束的相位和主扫描倍率的设定，以减少波纹的发生。 图案图像使用从参考光源照射的激光束和从调整对象光源照射的激光束形成，其中各个相位值被设置为相位设定值。 基于图案图像来调整激光束的相位之间的相位关系。 使用从调整对象光源照射的激光束形成图案图像，其中各个不同的倍率值被设置为倍率设定值。 基于这些图案图像来调整激光束的放大倍率。

公开(公告)号：US09069112B2

公开(公告)日：2015-06-30

申请号：US14191753

申请日：2014-02-27

申请人： Nippon Sheet Glass Company, Limited

发明人： Hiroyuki Nemoto

IPC分类号： B41J15/14 ,  B41J27/00 ,  G02B27/10 ,  G02B3/00 ,  G03G15/043 ,  G03G15/04 ,  G03G15/041

CPC分类号： G02B3/0068 ,  G02B3/0037 ,  G02B3/005 ,  G02B3/0062 ,  G02B3/0075 ,  G03G15/04036 ,  G03G15/04054 ,  G03G15/0409 ,  G03G15/041 ,  G03G15/0435

摘要： A first lens array unit includes a first lens array plate and a second lens array plate in which a plurality of lenses are provided in the main scanning direction, and a first light shielding member piece and a second light shielding member piece provided with a plurality of through holes corresponding to the lenses. The first lens array plate, the second lens array plate, the first light shielding member piece, and the second light shielding member piece are formed as one piece. The lens array is built by bending joints joining the lens array plates and the light shielding member pieces such that the lens is located to directly face the corresponding through hole.

摘要翻译： 第一透镜阵列单元包括第一透镜阵列板和在主扫描方向上设置多个透镜的第二透镜阵列板，以及设置有多个透镜阵列的第一遮光构件片和第二遮光构件片 对应于透镜的通孔。 第一透镜阵列板，第二透镜阵列板，第一遮光构件片和第二遮光构件片形成为一体。 透镜阵列是通过弯曲接合透镜阵列板和遮光构件片的接合点构成的，使得透镜被定位成直接面对相应的通孔。

公开(公告)号：US07970301B2

公开(公告)日：2011-06-28

申请号：US12275648

申请日：2008-11-21

申请人： Paul J. DeGruchy

发明人： Paul J. DeGruchy

IPC分类号： G03G15/00 ,  G03G15/20 ,  G03G15/045 ,  G03G15/36 ,  G03G15/041

CPC分类号： G03G15/6573 ,  G03G2215/00772

摘要： Disclosed are printing methods, apparatus and systems to compensate for distortion caused by fusing toner to a media substrate. According to one exemplary embodiment, the method includes processing image data according to media characterization data for a measured fuser temperature. The media characterization data provides a basis to compensate for media substrate shrinkage due to fusing the printed image on the media substrate.

摘要翻译： 公开了用于补偿由调色剂熔合到介质基板引起的变形的印刷方法，装置和系统。 根据一个示例性实施例，该方法包括根据测量的定影温度的介质表征数据处理图像数据。 介质表征数据提供了补偿由于将印刷图像融合在介质基板上的介质基板收缩的基础。

公开(公告)号：US07375853B2

公开(公告)日：2008-05-20

申请号：US10660678

申请日：2003-09-12

申请人： Yukari Nozaki

发明人： Yukari Nozaki

IPC分类号： G06K1/00 ,  G06F15/00 ,  G03G15/041 ,  G03G15/01 ,  G03F3/00

CPC分类号： H04N1/3935

摘要： A separating unit determines, for an image data, whether there exists black data, and generates density data from the black data when the black data exists, and generates color data from data other than the black data. A multinarizing unit converts the color data into multinary data. A magnification varying unit varies the density data and the color data multinarized, using a cubic function convolution method. A binarizing unit binarizes the color data varied, based on a predetermined threshold. An image forming unit prints the color data binarized and the density data varied, onto a recording medium.

摘要翻译： 分离单元对于图像数据确定是否存在黑色数据，并且当黑色数据存在时，从黑色数据生成浓度数据，并且从黑色数据以外的数据生成颜色数据。 多功能单元将颜色数据转换为多重数据。 放大率变化单元使用三次函数卷积方法来改变密度数据和多色化的颜色数据。 二值化单元基于预定阈值二值化所变化的颜色数据。 图像形成单元将二值化的颜色数据和密度数据变化到打印介质上。