公开(公告)号：JP2010266682A

公开(公告)日：2010-11-25

申请号：JP2009117840

申请日：2009-05-14

申请人： Ricoh Co Ltd ,  株式会社リコー

发明人： TAKEUCHI NOBUTAKA ,  ISHIBASHI HITOSHI ,  HASEGAWA MAKOTO ,  MIYASHITA YOSHIAKI ,  TANAKA KAYOKO ,  HIRAYAMA YUJI ,  YOSHIDA AKIRA ,  MUTO TETSUYA

IPC分类号： G03G15/01 ,  B41J2/52 ,  B41J2/525 ,  G03G15/00

摘要： PROBLEM TO BE SOLVED: To provide a device that controls image density by accurately calculating development γ through forming gradation patterns once so that the amount of toner attachment is correctly calculated by the number of fewer toner patches and a toner patch is securely interpolated in the detecting range of a sensor, and to provide an image forming apparatus with the device. SOLUTION: The image density control device forms a plurality of toner gradation patterns in series for each toner different in color, reads the toner gradation patterns by an optical detecting means to calculate the developing capability of the image forming apparatus, and changes an image forming condition for the image forming apparatus based on the result of the calculation. The image density control device includes an estimating means for estimating a change in the state of the developing capability of the image forming apparatus. While maintaining the total of the toner gradation patterns based on the result of estimation by the estimating means, the image density control device changes the number of toner patterns for the respective colors to form the toner gradation patterns. COPYRIGHT: (C)2011,JPO&INPIT

摘要翻译： 要解决的问题：提供一种通过以下方式精确地计算显影γ来控制图像浓度的装置：通过形成灰度图案一次，以便通过更少的调色剂块的数量正确地计算调色剂附着量，并且可靠地插入调色剂贴片 在传感器的检测范围内，并且提供具有该装置的图像形成装置。 解决方案：图像浓度控制装置对于不同颜色的每种调色剂串联形成多个调色剂浓淡图案，通过光学检测装置读取调色剂浓度图案以计算图像形成装置的显影能力，并且改变 基于计算结果的图像形成装置的图像形成条件。 图像浓度控制装置包括用于估计图像形成装置的显影能力的状态的变化的估计装置。 在基于估计装置的估计结果维持调色剂浓淡图案的总和的同时，图像浓度控制装置改变各颜色的调色剂图案的数量以形成调色剂浓淡图案。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010210697A

公开(公告)日：2010-09-24

申请号：JP2009054025

申请日：2009-03-06

申请人： Ricoh Co Ltd ,  株式会社リコー

发明人： YOSHIDA AKIRA ,  KATO SHINJI ,  HASEGAWA MAKOTO ,  NAKAZATO YASUFUMI ,  ISHIBASHI HITOSHI ,  MIYASHITA YOSHIAKI ,  HIRAI HIDEJI ,  FUJIMORI KOTA ,  TAKEUCHI NOBUTAKA ,  HIRAYAMA YUJI ,  TANAKA KAYOKO ,  MUTO TETSUYA

IPC分类号： G03G15/08

摘要： PROBLEM TO BE SOLVED: To provide a developing device capable of reducing difference of agent density (bulk density) on the detection surface of a toner concentration sensor in a stirring operation while preventing erroneous detection by staying of developer on the detection surface. SOLUTION: The developing device 40Y using two-component developer includes: a conveyance screw 47Y arranged in a developer storage part 43Y2 constituted of a casing 43Y; a concentration detection surface 430 provided facing the rotation locus of the conveyance screw 47Y; and the concentration sensor 48Y. A detection surface stirring member 200 capable of stirring the developer by sliding the detection surface 430 is provided at a position facing the detection surface 430 in the axial direction of the conveyance screw 47Y, wherein the member 200 is formed into a rectangular wave shape, and includes an elastic sheet 200B which deflects and deforms while being brought into contact with the detection surface at a projected part. COPYRIGHT: (C)2010,JPO&INPIT

摘要翻译： 要解决的问题：提供能够在搅拌操作中减少调色剂浓度传感器的检测表面上的试剂密度（体积密度）差异的显影装置，同时防止在检测表面上留下显影剂的错误检测。 解决方案：使用双组分显影剂的显影装置40Y包括：布置在由壳体43Y构成的显影剂储存部43Y2中的输送螺杆47Y; 设置在面向传送螺杆47Y的旋转轨迹的浓度检测面430; 和浓度传感器48Y。 在传送螺杆47Y的轴向的面向检测面430的位置处设置能够通过滑动检测面430而搅拌显影剂的检测面搅拌部件200，其中，部件200形成为矩形波形， 包括弹性片200B，弹性片200B在突出部分与检测表面接触的同时偏转和变形。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2010091797A

公开(公告)日：2010-04-22

申请号：JP2008261722

申请日：2008-10-08

申请人： Ricoh Co Ltd ,  株式会社リコー

发明人： HASEGAWA MAKOTO ,  FUJIMORI KOTA ,  TAKEUCHI NOBUTAKA ,  MIYASHITA YOSHIAKI ,  YOSHIDA AKIRA ,  TANAKA KAYOKO

IPC分类号： G03G21/00 ,  G03G15/00

摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus that performs stable image density adjustment in a short time while restraining increases in the size and price of the apparatus.
SOLUTION: When the adjusted value L of an amount of light emission of an image density detecting means in calibration is set to a predetermined range, the image forming apparatus performs a pre-calibration operation in which a determination is made whether the output average value Vsg (0) of the image density detecting means has a predetermined value or not in a detecting time that is ≤1/2 of regular calibration with an adjusted value L of the amount of light emission before the subsequent calibration. If the output average value Vsg (0) of the image density detecting means has the predetermined value, the image forming apparatus does not perform the calibration operation. When a variation in a plurality of output values obtained by detecting non-image parts of an image carrier, obtained by sampling in order to calculate the output average value Vsg (0) of the image density detecting means in the pre-calibration operation, reaches the predetermined value or above, the image forming apparatus performs the calibration operation.
COPYRIGHT: (C)2010,JPO&INPIT

摘要翻译： 要解决的问题：提供一种在短时间内进行稳定的图像浓度调节的图像形成装置，同时抑制装置的尺寸和价格的增加。 解决方案：当将校准中的图像浓度检测装置的发光量的调整值L设定为预定范围时，图像形成装置执行预校准操作，其中确定输出 图像浓度检测装置的平均值Vsg（0）在正常校准的≤1/ 2的检测时间内具有预定值，具有在随后校准之前的发光量的调整值L。 如果图像浓度检测装置的输出平均值Vsg（0）具有预定值，则图像形成装置不执行校准操作。 当通过检测通过采样获得的图像载波的非图像部分获得的多个输出值的变化，以便在预校准操作中计算图像浓度检测装置的输出平均值Vsg（0）时，达到 该预定值以上，图像形成装置进行校准操作。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2008225240A

公开(公告)日：2008-09-25

申请号：JP2007065684

申请日：2007-03-14

申请人： Ricoh Co Ltd ,  株式会社リコー

发明人： MIYASHITA YOSHIAKI

IPC分类号： G03G21/00 ,  G03G21/14

摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of securing uniformity of adhesion amounts of lubricant applied on the surface of an image carrier irrespective of images to be output with simple and inexpensive structure. SOLUTION: In such a case that many images with a vertical black belt in the vertical subscanning direction are continuously output at the same position, difference is inevitably generated in the adhesion amount of the lubricant on the photoreceptor compared with other parts since toner consumption at the same position of a photoreceptor surface becomes abnormally large. In the present invention, the main scanning direction (longitudinal direction of the photoreceptor) is subdivided into n pieces, the number of pixels in each of the subdivided areas is memorized in a counter number A(n), when the number of pixels is equal to or less than the specified number of pixels, the number of pixels of an amount equivalent to the difference, the photoreceptor is exposed, developed to the subdivided areas (n), in a non-imaged area after printing operation, to execute compulsory consumption of toner. (a) represents images obtained by subdividing the main scanning direction. (b) represents a case of forcibly consuming the toner by every area. COPYRIGHT: (C)2008,JPO&INPIT

摘要翻译： 要解决的问题：提供一种图像形成装置，其能够确保施加在图像载体的表面上的润滑剂的附着量的均匀性，而不管以简单且便宜的结构输出的图像。 解决方案：在垂直副扫描方向上具有垂直黑带的许多图像在相同位置连续输出的情况下，与其他部件相比，润滑剂在感光体上的附着量不可避免地产生差异，因为调色剂 在感光体表面的相同位置的消耗变得异常大。 在本发明中，主扫描方向（感光体的长度方向）被细分为n个，每个细分区域中的像素数存储在计数器号A（n）中，当像素数相等时 达到或小于指定数量的像素时，在打印操作之后的非成像区域中，将感光体曝光，显影到细分区域（n）的像素数量等于执行强制消耗 的墨粉。 （a）表示通过细分主扫描方向而获得的图像。 （b）表示强制消耗各区域的调色剂的情况。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2008102463A

公开(公告)日：2008-05-01

申请号：JP2006287026

申请日：2006-10-20

申请人： Ricoh Co Ltd ,  株式会社リコー

发明人： MIYASHITA YOSHIAKI

IPC分类号： G03G15/00

摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of improving the usability by shortening the waiting time, as well, as by efficiently preventing the changes in image quality. SOLUTION: In the image forming apparatus, which adopts an electrophotographic system, includes an image forming means for forming an image matching an image data signal and an image adjustment means involving the adjustment time required for satisfactory output of an image, and holds adjustment result as an image output parameter, the image forming apparatus is provided with an image formation state detecting means S1 for deciding whether to perform the operation of the image adjustment means involving the adjustment time. COPYRIGHT: (C)2008,JPO&INPIT

摘要翻译： 要解决的问题：提供一种能够通过有效地防止图像质量的变化来缩短等待时间来提高可用性的图像形成装置。 解决方案：在采用电子照相系统的图像形成装置中，包括用于形成与图像数据信号匹配的图像的图像形成装置和包括令人满意地输出图像所需的调整时间的图像调整装置，并且保持 调整结果作为图像输出参数，图像形成装置设置有图像形成状态检测装置S1，用于决定是否执行涉及调节时间的图像调整装置的操作。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2005266138A

公开(公告)日：2005-09-29

申请号：JP2004076879

申请日：2004-03-17

申请人： Ricoh Co Ltd ,  株式会社リコー

发明人： MIYASHITA YOSHIAKI

IPC分类号： G03G21/00

摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of stably yielding a high-quality output image by preventing the deterioration of the quality of the output image in advance by changing the applying amount of lubricant to an image carrier in accordance with the number of pixels of data.
SOLUTION: The image forming apparatus to form the image on recording paper in pixel units by transferring a toner image formed on the surface of a photoreceptor belt 1 based on input image data is equipped with a coating brush 15b applying the lubricant to the surface of the belt 1 and a number-of-pixels counter counting the number of pixels of the formed image. Then, the applying amount of the lubricant applied by the brush 15b is changed in accordance with the number of pixels of the input image data.
COPYRIGHT: (C)2005,JPO&NCIPI

摘要翻译： 要解决的问题：提供一种图像形成装置，其能够通过根据图像载体改变润滑剂的施加量来防止输出图像的质量的劣化来稳定地产生高质量的输出图像 与数据的像素数。 解决方案：通过基于输入图像数据转印形成在感光带1的表面上的调色剂图像，以像素为单位在记录纸上形成图像的图像形成装置配备有将润滑剂施加到 皮带1的表面和对形成图像的像素数进行计数的像素数计数器。 然后，根据输入图像数据的像素数来改变由刷子15b施加的润滑剂的施加量。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2003330318A

公开(公告)日：2003-11-19

申请号：JP2003169805

申请日：2003-06-13

申请人： Ricoh Co Ltd ,  株式会社リコー

发明人： MIYASHITA YOSHIAKI

IPC分类号： G03G21/00 ,  G03G15/16 ,  G03G21/10 ,  G03G21/18

摘要： PROBLEM TO BE SOLVED: To prevent ununiform application of a lubricant with a simple structure, thereby preventing ununiform density of an image, in an image forming device that applies a lubricant while maintaining the contact of the brush of a lubricant application member with the surface of a photoreceptor. SOLUTION: The bristle density of the brush 62 of the lubricant application member 60 which contacts the surface of the photoreceptor 8 after the transfer of a toner image is set to 20,000 bristles/645.16 mm 2 or more. COPYRIGHT: (C)2004,JPO

摘要翻译： 解决问题：为了防止在结构简单的情况下不均匀地施加润滑剂，从而防止图像密度不均匀，在保持润滑剂施加构件的刷子的接触保持润滑剂的图像形成装置中， 感光体的表面。 解决方案：在调色剂图像转印之后，润滑剂施加部件60的刷子62的刷毛接触感光体8的表面的刷毛密度设定为20,000刷毛/ 645.16mm 更多。 版权所有（C）2004，JPO

公开(公告)号：JP2010032840A

公开(公告)日：2010-02-12

申请号：JP2008195834

申请日：2008-07-30

申请人： Ricoh Co Ltd ,  株式会社リコー

发明人： MIYASHITA YOSHIAKI ,  HASEGAWA MAKOTO ,  FUJIMORI KOTA ,  TAKEUCHI NOBUTAKA ,  HIRAYAMA YUJI ,  YOSHIDA AKIRA

IPC分类号： G03G21/00

摘要： PROBLEM TO BE SOLVED: To provide a lubricant applying device that is used for an image forming apparatus including an image carrier carrying an image formed with toner, such as a copier, a facsimile and a printer and has a lubricant applying member for applying a lubricant to such an image carrier and that removes the toner sticking to the lubricant applying member by applying a bias to the lubricant applying member, regardless of a toner charging polarity, to provide such an image forming apparatus equipped with the lubricant applying device, and to provide a lubricant applying member cleaning method of cleaning such a lubricant applying member.
SOLUTION: In a toner removing mode to remove the toner sticking to the lubricant applying member 15b for applying the lubricant 15c to the image carrier 1 in contact with the image carrier 1 that carries the image formed with the toner from the lubricant applying member, a first bias having a polarity which is the same as a toner charging polarity and a second bias having a polarity which is opposite to the toner charging polarity are applied in a switched manner.
COPYRIGHT: (C)2010,JPO&INPIT

摘要翻译： 要解决的问题：提供一种用于图像形成装置的润滑剂施加装置，所述图像形成装置包括携带由诸如复印机，传真机和打印机的调色剂形成的图像的图像载体，并且具有用于 对这种图像载体施加润滑剂，并且通过向润滑剂施加构件施加偏压而去除粘附到润滑剂施加构件的调色剂，而不管调色剂带电极性如何，以提供配备有润滑剂施加装置的图像形成装置， 并且提供清洁这种润滑剂施加构件的润滑剂施加构件清洁方法。 解决方案：在调色剂移除模式中，去除粘附到润滑剂施加部件15b上的调色剂施加部件15b，用于将润滑剂15c施加到图像载体1上，所述图像载体1与载体1相接触，载体1携带来自施加润滑剂的调色剂形成的图像 以切换的方式施加具有与调色剂充电极性相同的极性的第一偏置和具有与调色剂充电极性相反的极性的第二偏压。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2008058615A

公开(公告)日：2008-03-13

申请号：JP2006235573

申请日：2006-08-31

申请人： Ricoh Co Ltd ,  株式会社リコー

发明人： MIYASHITA YOSHIAKI

IPC分类号： G03G21/00 ,  G03G15/08

摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of providing a user with improved convenience in toner-end detection, and also, capable of reducing an error in toner consumption resulting from background staining, consequently, accurately predicting a remaining toner amount. SOLUTION: The image forming apparatus 800 includes: an image carrier 100; an electrostatic latent image forming means 5; a developing means 60; and a controller 500 having a toner-end judging mechanism. The controller 500 includes: a pixel-number counter 500-p for counting the number A of pixels in the electrostatic latent image written on the image carrier 100; and a background staining toner correcting means 500-q for correcting the background staining correction amounts k1 and k2 equivalent to the toner amount applied to the background staining part on the image carrier based on the number A of pixels obtained by the pixel-number counter 500-p. The background staining toner correcting means 500-q accurately and selectively uses the background staining correction amount k1 or k2 in accordance with an image forming condition in each image forming operation. COPYRIGHT: (C)2008,JPO&INPIT

摘要翻译： 要解决的问题：为了提供能够为使用者提供调色剂结束检测方面的改进的图像形成装置，并且还能够减少由背景染色引起的调色剂消耗的误差，从而准确地预测剩余的 墨粉量。 图像形成装置800包括：图像载体100; 静电潜像形成装置5; 显影装置60; 以及具有调色剂结束判断机构的控制器500。 控制器500包括：像素数计数器500-p，用于对写在图像载体100上的静电潜像中的像素数量A进行计数; 以及背景染色调色剂校正装置500-q，用于基于由像素数计数器500获得的像素数A来校正与施加到图像载体上的背景染色部分的调色剂量相当的背景染色校正量k1和k2 -p。 背景染色调色剂校正装置500-q根据每个图像形成操作中的图像形成条件准确且选择性地使用背景染色校正量k1或k2。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2006259091A

公开(公告)日：2006-09-28

申请号：JP2005074934

申请日：2005-03-16

申请人： Ricoh Co Ltd ,  株式会社リコー

发明人： MIYASHITA YOSHIAKI

IPC分类号： G03G21/00 ,  G03G15/00 ,  G03G15/01

摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus having a lubricant applying means for applying a lubricant onto an image carrier, in which stable images of high quality is obtained by keeping the amount of the lubricant on the image carrier within a proper range without degrading the convenience for users.
SOLUTION: The image forming apparatus including a photoreceptor belt 1 and an applying brush 15b for applying the lubricant onto the photoreceptor belt 1 is provided with a lubricant application amount control means 110 which calculates the number of times of image formation performed on the photoreceptor belt in one-job operation and performs such control that the application amount of the lubricant after the end of an image forming is changed in accordance with the calculated number of times of image formation.
COPYRIGHT: (C)2006,JPO&NCIPI

摘要翻译： 要解决的问题：提供一种图像形成装置，其具有润滑剂施加装置，用于将润滑剂施加到图像载体上，其中通过将图像载体上的润滑剂的量保持在图像载体内而获得高质量的稳定图像 适当的范围，不会降低用户的便利。 解决方案：包括感光带1和用于将润滑剂涂敷到感光带1上的涂刷刷15b的图像形成装置设置有润滑剂施加量控制装置110，该润滑剂施加量控制装置110计算在该感光带1上执行的图像形成次数 感光带在一次操作中进行控制，使得根据计算出的图像形成次数改变图像形成结束后的润滑剂的涂布量。 版权所有（C）2006，JPO＆NCIPI