公开(公告)号：US20140093265A1

公开(公告)日：2014-04-03

申请号：US14040120

申请日：2013-09-27

申请人： Shuichi Kato ,  Toshio Furukawa

发明人： Shuichi Kato ,  Toshio Furukawa

IPC分类号： G03G15/16

CPC分类号： G03G15/161 ,  G03G2221/0073

摘要： An image forming apparatus including: an intermediate transfer member configured to transfer the developer images on the plurality of photosensitive members; a secondary transfer member configured to transfer the developer images transferred onto the intermediate transfer member onto a recording sheet; a plurality of primary holding rollers provided to each of the plurality of photosensitive members, respectively; a collecting unit configured to collect developer remaining on the intermediate transfer member; and a control device configured to control biases applied to the secondary transfer member and the plurality of primary holding rollers, wherein, after printing control terminates, the control device is configured to perform cleaning control in which biases having opposite polarities to biases during the printing control are applied to the plurality of primary holding rollers and the secondary transfer member.

摘要翻译： 一种图像形成装置，包括：中间转印部件，被配置为将所述显影剂图像转印到所述多个感光部件上; 二次转印构件，被配置为将转印到中间转印构件上的显影剂图像转印到记录纸上; 分别设置在所述多个感光构件中的每一个上的多个主保持辊; 收集单元，其构造成收集残留在所述中间转印部件上的显影剂; 以及控制装置，被配置为控制施加到二次转印构件和多个初级保持辊的偏压，其中在打印控制终止之后，控制装置被配置为进行清洁控制，其中在打印控制期间具有相反极性的偏压偏置偏置 被施加到多个主保持辊和二次转印构件。

公开(公告)号：US20140003839A1

公开(公告)日：2014-01-02

申请号：US13832811

申请日：2013-03-15

申请人： Toshio Furukawa

发明人： Toshio Furukawa

IPC分类号： G03G21/16

CPC分类号： G03G15/1605 ,  G03G21/1628 ,  G03G21/168

摘要： Image forming apparatus includes: main body casing having first and second side walls opposite to each other, and upper portion having opening; top cover swingably supported on the upper portion of the main body casing at a position near the second side wall and configured to openably close the opening; endless belt disposed below the top cover and having first end portion closer to the first side wall and second end portion closer to the second side wall; photoconductor drum disposed under the endless belt; development unit disposed under the photoconductor drum and configured to supply developer to the photoconductor drum; and fixing device disposed above the second end portion of the endless belt. The endless belt is configured to be swingable about axis of rotation provided near the second side wall such that the first end portion of the endless belt is swingable in an upper-lower direction.

摘要翻译： 图像形成装置包括：具有彼此相对的第一和第二侧壁的主体外壳，以及具有开口的上部; 顶盖在靠近第二侧壁的位置处摆动地支撑在主体壳体的上部上并且构造成可开启地关闭开口; 环形带设置在顶盖下方，并且具有靠近第一侧壁的第一端部和靠近第二侧壁的第二端部; 设置在环形带下方的感光鼓; 显影单元设置在感光鼓下方并且被配置为将显影剂供应到感光鼓; 以及设置在环形带的第二端部之上的固定装置。 环形带构造成可围绕设置在第二侧壁附近的旋转轴线摆动，使得环形带的第一端部能够在上下方向上摆动。

公开(公告)号：US08559840B2

公开(公告)日：2013-10-15

申请号：US13238090

申请日：2011-09-21

申请人： Toshio Furukawa

发明人： Toshio Furukawa

IPC分类号： G03G15/01 ,  G03G15/16 ,  G03G21/00

CPC分类号： G03G21/0058 ,  G03G2215/00075

摘要： An image forming apparatus includes: an image carrier rotates in a predetermined direction; a correction image forming unit forming correction images on the image carrier in the predetermined direction; and a cleaning roller configured to clean the correction images on the image carrier. With respect to all values ranging from 1 to an arbitrary value n, a positive integer N which satisfies following expression for each of n exists: (T×N+L)/n≦R/V≦(T×(N+1)−L)/n, where R represents a circumferential length of the cleaning roller, L represents a length of each of the correction images in a moving direction of the image carrier, T represents a formation interval of the correction images in the moving direction of the image carrier, and V represents a ratio of a peripheral speed of the cleaning roller to a moving speed of the image carrier.

摘要翻译： 图像形成装置包括：图像载体沿预定方向旋转; 校正图像形成单元，沿预定方向在图像载体上形成校正图像; 以及清洁辊，其构造成清洁图像载体上的校正图像。 对于从1到任意值n的所有值，存在满足以下每个n的正整数N：（T×N + L）/ n @ R / V @（T×（N + 1） -L）/ n，其中R表示清洁辊的周长，L表示图像载体的移动方向上的每个校正图像的长度，T表示校正图像在移动方向上的形成间隔 图像载体，V表示清洁辊的圆周速度与图像载体的移动速度的比率。

公开(公告)号：US08478157B2

公开(公告)日：2013-07-02

申请号：US12855315

申请日：2010-08-12

申请人： Toshio Furukawa

发明人： Toshio Furukawa

IPC分类号： G03G15/16 ,  G03G21/00

CPC分类号： G03G15/0194 ,  G03G15/0189 ,  G03G2215/0193

摘要： An image forming device in a continuous mode forms monochrome images on a plurality of recording media in succession. A transfer member is disposed in confrontation with a plurality of photosensitive members. In the continuous mode, a control unit controls a reverse-transfer unit to perform a reverse-transfer operation on at least one of a plurality of collecting members such that the excrescences are transferred from the at least one of the photosensitive members onto the transfer member in a medium interval. A switching unit sets a contact state to a first contact state during the reverse-transfer operation in the continuous mode such that one of the developing rollers for black contacts one of the photosensitive members for black and that remaining ones of the developing rollers are separated from remaining ones of the photosensitive members.

摘要翻译： 连续模式的图像形成装置连续地在多个记录介质上形成单色图像。 传送构件与多个感光构件对抗地设置。 在连续模式中，控制单元控制反向传送单元对多个收集构件中的至少一个进行反向传送操作，使得该凹部从至少一个感光构件转印到转印构件上 在中等间隔。 切换单元在连续模式下的反向传送操作期间将接触状态设置为第一接触状态，使得用于黑色的一个显影辊与黑色的感光构件中的一个和剩余的显影辊中的一个分离 剩余的感光元件。

公开(公告)号：US07701615B2

公开(公告)日：2010-04-20

申请号：US11525040

申请日：2006-09-22

申请人： Toshio Furukawa ,  Masashi Suzuki ,  Seiji Yoshida

发明人： Toshio Furukawa ,  Masashi Suzuki ,  Seiji Yoshida

IPC分类号： G06K15/00 ,  H04N1/46

CPC分类号： H04N1/52

摘要： Whether or not a density of black is a predetermined value or more is judged, and when it is judged to be the predetermined value or more, a resolution characteristic is changed to an improved resolution characteristic compared to the resolution characteristic used in a case in which a judgment result shows a value under the predetermined value. When the density of black is deeper, the resolution characteristic is improved, and therefore black is prevented from becoming in a so-called void state. Accordingly, the color close to black such as four-color black can be stably and excellently formed. In addition, when the density of black is the value under the predetermined value, the resolution characteristic lower than this value is used, and therefore dots can be stably formed and an excellent gradation property can be achieved.

摘要翻译： 判断黑色的浓度是否为规定值以上，判断为规定值以上时，与使用的分辨率特性相比，分辨率特性变为改善分辨率特性， 判断结果显示在预定值之下的值。 当黑色的浓度较深时，分辨率特性提高，因此防止黑色变成所谓的空隙状态。 因此，可以稳定且优良地形成接近黑色的颜色，例如四色黑色。 此外，当黑色的浓度是预定值以下的值时，使用低于该值的分辨率特性，因此可以稳定地形成点，并且可以实现优异的灰度特性。

公开(公告)号：US07693460B2

公开(公告)日：2010-04-06

申请号：US11874989

申请日：2007-10-19

申请人： Toshio Furukawa

发明人： Toshio Furukawa

IPC分类号： G03G15/01

CPC分类号： G03G15/0121 ,  G03G15/50 ,  G03G21/0047 ,  G03G21/10 ,  G03G2215/0141

摘要： An image forming apparatus is provided which includes a switching mechanism which selectively shifts developing rollers among an all-color non-contact state in which all photosensitive members are kept apart from the corresponding developing rollers, a black contact state in which only the photosensitive member for black is kept in contact with the corresponding developing roller, and an all-color contact state in which all the photosensitive members are kept in contact with the corresponding developing rollers, and a control section which, when an operation mode of the apparatus is shifted from a color mode to a monochrome mode, causes the switching mechanism to shift the developing rollers from the all-color contact state to the all-color non-contact state to perform a transferring process to once transfer developing agents from recovery members onto the corresponding photosensitive members and further transfer the developing agents from the photosensitive members onto a transfer belt.

摘要翻译： 提供了一种图像形成装置，其包括切换机构，该切换机构选择性地将所有感光部件与相应的显影辊保持分离的全色非接触状态中的显影辊移位，黑色接触状态，其中只有 黑色与相应的显影辊保持接触，并且全色接触状态，其中所有感光构件与相应的显影辊保持接触;以及控制部，其在装置的操作模式从 使单色模式的颜色模式使得切换机构将显影辊从全色接触状态移动到全色非接触状态，以执行转印过程，以将显影剂从回收元件转移到相应的感光体上 构件并进一步将显影剂从感光构件转印到转印膜上 t。

公开(公告)号：US07526235B2

公开(公告)日：2009-04-28

申请号：US11236854

申请日：2005-09-28

申请人： Toshio Furukawa

发明人： Toshio Furukawa

IPC分类号： G03G15/01

CPC分类号： G03G21/0064 ,  G03G15/0194 ,  G03G2215/0119 ,  G03G2215/1661

摘要： An image-forming device includes 1st to Nth image bearing members, 1st to Nth developing units provided in one-to-one correspondence with the 1st to Nth image bearing members, and a transfer unit. N is an integer number equal to or greater than two. The 1st to Nth image members have 1st to Nth surfaces respectively. The 1st to Nth electrostatic latent images are formable on the 1st to Nth surface respectively. The 1st to Nth developing units have 1st to Nth monochromatic developers respectively. The 1st monochromatic developer is of monochromatic black and has a toner particle substantially spherical in shape. The 1st to Nth developing units develop the 1st to Nth electrostatic latent images with the 1st to Nth monochromatic developers respectively in order to form 1st to Nth developer images respectively. The transfer unit transfers sequentially the 1st to Nth developer images to a recipient in a superimposed manner in order of the 1st to Nth developer image.

摘要翻译： 图像形成装置包括第1至第N图像承载部件，与第1至第N图像承载部件一一对应地设置的第1至第N显影单元和转印单元。 N是等于或大于2的整数。 第1至第N图像成员分别具有第1到第n个表面。 第一至第N静电潜像分别在第1至第N表面上形成。 第一至第七发展单位分别有第一至第七单色开发商。 第一单色显影剂是单色黑色，并且具有基本上为球形的调色剂颗粒。 第一到第N显影单元分别用第1至第N个单色显影剂分别开发第1至第N静电潜像，以分别形成第1至第N显影剂图像。 传送单元按照第1到第N显影剂图像的顺序，按照重叠的顺序将第1至第N显影剂图像顺序地传送到接收者。

公开(公告)号：US20080317506A1

公开(公告)日：2008-12-25

申请号：US11874989

申请日：2007-10-19

申请人： Toshio Furukawa

发明人： Toshio Furukawa

IPC分类号： G03G15/01

CPC分类号： G03G15/0121 ,  G03G15/50 ,  G03G21/0047 ,  G03G21/10 ,  G03G2215/0141

摘要： An image forming apparatus is provided which includes a switching mechanism which selectively shifts developing rollers among an all-color non-contact state in which all photosensitive members are kept apart from the corresponding developing rollers, a black contact state in which only the photosensitive member for black is kept in contact with the corresponding developing roller, and an all-color contact state in which all the photosensitive members are kept in contact with the corresponding developing rollers, and a control section which, when an operation mode of the apparatus is shifted from a color mode to a monochrome mode, causes the switching mechanism to shift the developing rollers from the all-color contact state to the all-color non-contact state to perform a transferring process to once transfer developing agents from recovery members onto the corresponding photosensitive members and further transfer the developing agents from the photosensitive members onto a transfer belt.

摘要翻译： 提供了一种图像形成装置，其包括切换机构，该切换机构选择性地将所有感光部件与相应的显影辊保持分离的全色非接触状态中的显影辊移位，黑色接触状态，其中只有 黑色与相应的显影辊保持接触，并且全色接触状态，其中所有感光构件与相应的显影辊保持接触;以及控制部，其在装置的操作模式从 使单色模式的颜色模式使得切换机构将显影辊从全色接触状态移动到全色非接触状态，以执行转印过程，以将显影剂从回收元件转移到相应的感光体上 构件并进一步将显影剂从感光构件转印到转印膜上 t。

公开(公告)号：US20070177911A1

公开(公告)日：2007-08-02

申请号：US11730844

申请日：2007-04-04

申请人： Kenjiro Nishiwaki ,  Toshio Furukawa

发明人： Kenjiro Nishiwaki ,  Toshio Furukawa

IPC分类号： G03G15/01

CPC分类号： G03G15/1675 ,  G03G15/0131 ,  G03G2215/0119 ,  G03G2215/1614

摘要： An apparatus for forming a multi-color image is disclosed which includes a controller that performs an anti reverse-transfer control such that a surface potential of a previously-formed separated-developer-image subset of a plurality of single-color separated-developer-images which has been previously transferred onto an image transferred medium is reduced, prior to a subsequent transfer in which a remainder of the plurality of separated-developer-images is transferred onto the image transferred medium after a previous transfer of the previously-formed separated developer-image subset onto the image transferred medium, to thereby prevent a reverse transfer of a part of a developer material on the image transferred medium from the image transferred medium onto a photoconductor at the subsequent transfer.

公开(公告)号：US07110687B2

公开(公告)日：2006-09-19

申请号：US10808373

申请日：2004-03-25

申请人： Toshio Furukawa

发明人： Toshio Furukawa

IPC分类号： G03G15/00

CPC分类号： G03G15/0194 ,  G03G15/5054 ,  G03G2215/00059 ,  G03G2215/00063 ,  G03G2215/0119 ,  G03G2215/0161

摘要： An image forming device measures calibration patterns printed on a conveying belt and stores the measurement data, which includes data for the density and position of the patterns. Measurement data is deleted from memory when the position of the pattern matches positional data stored in a flash memory for indicating unusable or abnormal positions on the conveying belt. Next, the density data and positional data in each measurement data is checked. If either the density or positional data falls outside of a specified range, then the measurement data is considered abnormal. In this case, the pattern forming position in the measurement data is stored as positional data and the measurement data is deleted. Subsequently, color registration correction is performed based on the remaining normal measurement data.

摘要翻译： 图像形成装置测量印刷在输送带上的校准图案并存储测量数据，其包括用于图案的浓度和位置的数据。 当图案的位置匹配存储在闪存中的位置数据以指示传送带上的不可用或异常位置时，从存储器中删除测量数据。 接下来，检查各测量数据中的浓度数据和位置数据。 如果密度或位置数据超出指定范围，则测量数据被认为是异常的。 在这种情况下，测量数据中的图案形成位置被存储为位置数据，并且测量数据被删除。 随后，基于剩余的正常测量数据执行颜色配准校正。