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41. 发明专利

JP2008275901A Optical scanner, method of controlling light quantity and image forming apparatus 有权
标题翻译：光学扫描仪，控制光数量和图像形成装置的方法
公开(公告)号：JP2008275901A
公开(公告)日：2008-11-13
申请号：JP2007119618
申请日：2007-04-27
申请人： Canon Inc , キヤノン株式会社
发明人： SEKI YUICHI
IPC分类号： G02B26/10 , B41J2/44 , H04N1/113 , H04N1/19
CPC分类号： G03G15/5033 , G02B26/12 , G03G2215/00042
摘要： PROBLEM TO BE SOLVED: To uniform the surface electric potential in dark parts and bright parts of a latent image.
SOLUTION: The optical scanner includes, for example, an approximation expression decision making means, a sensitivity correction value decision making means and a bias current control means. The approximation expression decision making means decides on an n-th order approximating equation and an approximate equation of m-th order which express sensitivity characteristics in the main scanning direction of an image carrier, on the basis of the sensitivity data which show the sensitivity of the respective regions, obtained by dividing the surface of the image carrier into a plurality of parts, where n and m are natural numbers and m>n. The sensitivity correction value decision making means decides the sensitivity correction values which are the correction values of the sensitivity at the respective regions, on the basis of the approximate equation of n-th order and an m-th order approximate equation order. The bias current control means controls the bias current supplied to a light source according to the sensitivity correction value. A switching current control means controls the switching current supplied to the light source, according to the electric current and the sensitivity correction value for obtaining a target light quantity.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：使黑暗部分和潜像的亮部分的表面电位均匀。解决方案：光学扫描器包括例如近似表达式判定装置，灵敏度校正值决定装置和偏置电流控制装置。近似表达式决定装置根据表示灵敏度的灵敏度数据，确定表示图像载体的主扫描方向上的灵敏度特性的n阶近似方程和m阶近似方程式通过将图像载体的表面划分成多个部分获得的各个区域，其中n和m是自然数，m> n。灵敏度校正值决定装置基于n阶和m阶近似等式顺序的近似等式来确定作为各个区域的灵敏度的校正值的灵敏度校正值。偏置电流控制装置根据灵敏度校正值来控制提供给光源的偏置电流。开关电流控制装置根据用于获得目标光量的电流和灵敏度校正值来控制提供给光源的开关电流。版权所有（C）2009，JPO＆INPIT

42. 发明专利

JP2007171639A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2007171639A
公开(公告)日：2007-07-05
申请号：JP2005370168
申请日：2005-12-22
申请人： Canon Inc , キヤノン株式会社
发明人： KOGA KATSUHIDE , SEKI YUICHI , SUGANO TAKASHI
IPC分类号： G03G15/04 , B41J2/44 , G03G15/043
摘要： PROBLEM TO BE SOLVED: To provide an optical scanner carrying out control with a uniform optical quantity on a photoreceptor without any occurrence of a main scanning position misregistration even when the optical quantity is varied in an optical system provided with optical quantity end part compensation data; and to provide an image forming apparatus for it. SOLUTION: The image forming apparatus is provided with a means to switch the optical quantity in BD detection during one scanning and the optical quantity in a compensation for a missing end part during one scanning. Also, by varying a profile used for the compensation of the missing end part in the optical quantity according to the optical quantity when profile data is acquired and the optical quantity which is actually used and by controlling the optical quantity on the photoreceptor by controlling a laser driving current according to the quantity of compensation after the variation, no image misregistration occurs in the main scanning direction; the optical quantity on a drum surface is made uniform and an image of high definition can be provided. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种光学扫描器，即使在设置有光学量端部的光学系统中光量变化时，在感光体上执行具有均匀光量的控制，也不会发生主扫描位置重合失调补偿数据; 并为其提供图像形成装置。解决方案：图像形成装置设置有在一次扫描期间在BD检测中切换光量的装置以及在一次扫描期间针对缺失端部的补偿中的光量。此外，通过根据获取曲线数据时的光量和实际使用的光量，通过控制激光器来控制感光体上的光学量，改变用于补偿光学量中的缺失端部的轮廓根据变化后的补偿量驱动电流，在主扫描方向上不发生图像重合; 鼓面上的光量均匀，可以提供高清晰度的图像。版权所有（C）2007，JPO＆INPIT

43. 发明专利

JP2007078877A Image formation system, image forming apparatus, and method for controlling same 有权
标题翻译：图像形成系统，图像形成装置及其控制方法
公开(公告)号：JP2007078877A
公开(公告)日：2007-03-29
申请号：JP2005264429
申请日：2005-09-12
申请人： Canon Inc , キヤノン株式会社
发明人： SEKI YUICHI
IPC分类号： G03G21/00 , H04N1/21
摘要： PROBLEM TO BE SOLVED: To suitably continue image formation even if a communication error occurs between an image forming apparatus and an optical scanner. SOLUTION: The optical scanner includes a first storage means for storing unit data regarding characteristics for every individual. The image forming apparatus includes a second storage means for storing the unit data read from the first storage means and a third storage means for storing default setting data commonly used in a plurality of optical scanners. Then, when the unit data stored in the second storage means becomes mismatched to the unit data stored in the first storage means, the optical scanner is controlled by using the setting data read from the third storage means. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：即使在图像形成装置和光学扫描器之间发生通信错误，也适当地继续图像形成。解决方案：光学扫描仪包括用于存储关于每个人的特征的单元数据的第一存储装置。图像形成装置包括用于存储从第一存储装置读取的单位数据的第二存储装置和用于存储在多个光学扫描器中常用的默认设置数据的第三存储装置。然后，当存储在第二存储装置中的单元数据与存储在第一存储装置中的单元数据不匹配时，通过使用从第三存储装置读取的设置数据来控制光学扫描器。版权所有（C）2007，JPO＆INPIT

44. 发明专利

JP2004351908A Image forming apparatus and main scanning scale factor correcting method therefor 审中-公开
公开(公告)号：JP2004351908A
公开(公告)日：2004-12-16
申请号：JP2003167801
申请日：2003-06-12
申请人： Canon Inc , キヤノン株式会社
发明人： SEKI YUICHI
IPC分类号： B41J2/44 , B41J2/385 , G01D15/06 , G03G15/01 , G03G15/04 , G03G15/043 , G03G21/14 , H04N1/036 , H04N1/053 , H04N1/113 , H04N1/12 , H04N1/23
CPC分类号： H04N1/053 , H04N1/1135 , H04N1/12 , H04N2201/02443 , H04N2201/0471 , H04N2201/04732 , H04N2201/04744 , H04N2201/04758 , H04N2201/04798
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of properly correcting a main scanning scale factor without degrading a required printing quality. SOLUTION: In a main scanning scale factor correcting process, for each of one or more correction points (at l-th, m-th, and n-th pixels) on each of lines along which scanning is carried out on a photosensitive drum 11 by laser light, the final bit data of pixel-division-modulated pixel data of a pixel immediately preceding each correction point is added as the leading bit data of the pixel-division-modulated pixel data of a pixel located at the correction point. The same processing as above is sequentially performed on pixel data of pixels located subsequently to the correction point to sequentially shift the pixel-division-modulated pixel data of pixels to pixel data of the respective following pixels by bit, to thereby generate pixel data of a new pixel to be added on each of lines. The generated pixel data of the new pixel is outputted in synchronism with an image clock of a fixed frequency. COPYRIGHT: (C)2005,JPO&NCIPI

45. 发明专利

JP2004219642A Optical scanner 审中-公开
标题翻译：光学扫描仪
公开(公告)号：JP2004219642A
公开(公告)日：2004-08-05
申请号：JP2003005799
申请日：2003-01-14
申请人： Canon Inc , キヤノン株式会社
发明人： SEKI YUICHI , SAKAI AKIHIKO , KASAHARA SHIGERU , TOMIYASU HIROAKI , KIMURA KUNIYASU
IPC分类号： G02B26/10 , G02B26/12
摘要： PROBLEM TO BE SOLVED: To provide an optical scanner capable of automatically setting a light quantity adjustment of a semiconductor laser and also a motor control. SOLUTION: A radio communication device composed of a storage part which stores optical characteristics of a laser diode or photodiode, a communication part for radio communication, and a control part which controls the communication part and storage part is arranged on a laser device. A light quantity setting device having a reception part which is arranged in the laser device and receives a signal distributed from the radio communication device, a gain setting part which sets the gain of a current outputted from the photodiode according to electric and optical characteristics of the laser device received by the reception part, and an amplification part which amplifies the gain set by the gain setting part is provided on a laser drive circuit. COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够自动设定半导体激光器的光量调节和电机控制的光学扫描器。解决方案：一种由存储激光二极管或光电二极管的光学特性的存储部件，无线电通信用通信部件和控制通信部件和存储部件的控制部件构成的无线通信装置，配置在激光装置。一种光量设定装置，具有配置在所述激光装置中并接收从所述无线通信装置分配的信号的接收部的增益设定部，所述增益设定部根据所述光电二极管的电，光特性来设定从所述光电二极管输出的电流的增益在激光驱动电路上设置由接收部接收的激光装置和放大由增益设定部设定的增益的放大部。版权所有（C）2004，JPO＆NCIPI

46. 发明专利

JP2003295706A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2003295706A
公开(公告)日：2003-10-15
申请号：JP2002095135
申请日：2002-03-29
申请人： Canon Inc , キヤノン株式会社
发明人： OTAKA KOICHI , NAKAHARA TAKASHI , SEKI YUICHI , TAKAZAWA HIROSHI , WADA ATSUSHI , SEKIGUCHI TAKASHI
IPC分类号： G03G21/00 , G03G15/00 , G03G15/20
摘要： PROBLEM TO BE SOLVED: To prevent a sheet of paper whose both-side carrying is impossible, from being sent to a both-side device due to user's setting mistake or the like in the case of performing both-side printing in an image forming apparatus having a simple automatic both-side device in which the positioning of the end face of paper for both-side carrying is fixed. SOLUTION: The image forming apparatus is provided with a heat fixing means for heat-fixing a developing material on a sheet of recording paper, a 1st temperature detection means for controlling the temperature of the heat fixing means, a 2nd temperature detection means arranged on a position not held between sheets of specific paper inside the heat fixing means and an automatic both-side carrying means for performing both-side printing and a control means judges whether both-side carrying is possible or not on the basis of a temperature difference obtained from the 1st and 2nd temperature detection means. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了防止在双面打印的情况下由于用户的设置错误等而不能将双面携带的纸张发送到双面设备图像形成装置具有简单的自动双面装置，其中固定用于双面传送的纸的端面的定位。解决方案：图像形成装置设置有用于将显影材料热定影在记录纸张上的热定影装置，用于控制热定影装置的温度的第一温度检测装置，第二温度检测装置布置在没有保持在热定影装置内的特定纸张之间的位置和用于执行双面打印的自动双面传送装置和控制装置基于温度判断是否可以双面传送从第一和第二温度检测装置获得的差值。版权所有（C）2004，JPO

47. 发明专利

JP2003271004A Image forming device 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2003271004A
公开(公告)日：2003-09-25
申请号：JP2002069626
申请日：2002-03-14
申请人： Canon Inc , キヤノン株式会社
发明人： SEKIGUCHI TAKASHI , NAKAHARA TAKASHI , SEKI YUICHI , OTAKA KOICHI , TAKAZAWA HIROSHI , WADA ATSUSHI
IPC分类号： G03G15/20 , H05B3/00
摘要： PROBLEM TO BE SOLVED: To provide an image forming device which can prevent a heater and a pressure roller from thermally being stressed owing to abnormally high temperature of a heater.
SOLUTION: The image forming device has a center reference carrying means, a form front end detecting means, and a thermal fixing device which clamp a form by a heating part and a pressing part and thermally fixes a developer on the form, and a form discharge detecting means which detects the front end of the form discharged from the thermal fixing device and is constituted by arranging a 1st temperature detecting means which detects temperature at the heating part in the thermal fixing device, a 2nd temperature detecting means arranged at a different position from the 1st temperature detecting means, the 1st temperature detecting means being positioned nearly in the center along the width of the form carried to the heating part, the 2nd temperature detecting means being positioned at or outside an end part of the carried form, and the form front end detecting means or/and form discharge detecting means being at a position opposite the 2nd temperature detecting means based upon the 1st temperature detecting means along the width of the form.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种能够防止加热器和加压辊由于加热器的异常高温而受到热应力的图像形成装置。解决方案：图像形成装置具有中心参考传送装置，形式前端检测装置和热定影装置，其通过加热部分和按压部分夹持形状并将显影剂热固定在该形式上，以及检测从热定影装置排出的形式的前端的形式排出检测装置，并且是通过布置检测热定影装置中的加热部分的温度的第一温度检测装置构成的第二温度检测装置，与第一温度检测装置不同的位置，第一温度检测装置沿着承载到加热部件的形式的宽度几乎位于中心，第二温度检测装置位于携带形式的端部或外部，并且形式前端检测装置或/和形成放电检测装置基于该第一温度检测装置位于与第二温度检测装置相对的位置 st温度检测装置沿着形式的宽度。版权所有（C）2003，JPO

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