公开(公告)号：JP2014219590A

公开(公告)日：2014-11-20

申请号：JP2013099259

申请日：2013-05-09

Applicant: 株式会社リコー ,  Ricoh Co Ltd

Inventor： MIZUTANI TAKEHIDE ,  ISHII KOICHI ,  KATO TSUTOMU ,  TAKAHASHI YASUSHI ,  TANAKA SHINYA ,  ICHIHASHI OSAMU ,  KATO YUJI

IPC: G03G15/16 ,  G03G21/00

CPC classification number: G03G15/16 ,  G03G21/00

Abstract: 【課題】コストアップや大型化を招くことなく、環境条件等が変動した場合でも転写部材を良好にクリーニングする。【解決手段】ジャムリカバリが発生すると(S1)、復帰動作実行フラグを立てる(S2)。そして、ジャムリカバリを解除して(S3)、温湿度センサ等により環境条件を検出する(S4)。ここで検出した環境条件が所定の環境条件(本実施形態ではML,LL,LLL環境のいずれか)と判定された場合はS6に進み、バイアスクリーニングのモードをクリーニング低速モードに設定する。また、検出した環境条件が上記以外の場合はS7に進み、バイアスクリーニングのモードをクリーニング標準モードに設定する。そして、転写部材である二次転写ローラ36を像担持体である中間転写ベルト31に当接させ(S8)、所定のクリーニングバイアスを印加してバイアスクリーニングを実行する(S9)。【選択図】図4

Abstract translation: 要解决的问题：即使改变环境条件等来适当地清洁转印部件，也不会增加装置的成本或尺寸。解决方案：当发生卡纸恢复（S1）时，恢复操作执行标志被打开（S2 ）。 然后，释放卡纸恢复（S3），并且温度/湿度传感器等检测环境条件（S4）。 当检测到的环境条件被确定为预定环境条件（在这种情况下，ML，LL和LLL环境中的任一种）时，处理进行到S6，并且将偏置清洁模式设置为清洁低速模式。 当检测到的环境条件不同于上述情况时，处理进行到S7，偏置清洗模式被设定为清洁标准模式。 作为转印部件的二次转印辊36与作为图像载体（S8）的中间转印带31接触，以施加用于进行偏压清洁的预定清洁偏压（S9）。

公开(公告)号：JP2013156299A

公开(公告)日：2013-08-15

申请号：JP2012014511

申请日：2012-01-26

Applicant: Ricoh Co Ltd ,  株式会社リコー

Inventor： FUJITA JUNPEI ,  HAGA KOKICHI ,  MINBU RYUICHI ,  TAKAHASHI YASUSHI ,  SENGOKU KENJI ,  ICHIHASHI OSAMU ,  KATO YUJI

IPC: G03G15/16

Abstract: PROBLEM TO BE SOLVED: To provide an image forming device which can reduce a deviation from a target speed in a running speed of an intermediate transfer belt 25, which is caused by a processing error in a diameter of a drive roller 17c, in an abnormal time drive system.SOLUTION: An image forming device includes a control device 201 which controls a driving speed of a drive motor 203 on the basis of a detection result by an encoder 202 when an assessment is made that an abnormality occurs in a detection result at a scale sensor 205. The control device 201 is configured so that in a state that there is no abnormality in a detection result given by the scale sensor 205, while controlling a driving speed of the driving motor 203 on the basis of comparison between a detection result by the encoder 202 and an encoder target value, comparison between a detection result of the scale sensor 205 and a predetermined target value is made; and on the basis of a comparison result, a target value correction process to correct an encoder target value is executed at a predetermined timing.

Abstract translation: 要解决的问题：提供一种图像形成装置，其能够减少由于驱动辊17c的直径的加工误差而导致的中间转印带25的运转速度的目标速度的异常 时间驱动系统。解决方案：图像形成装置包括控制装置201，控制装置201基于编码器202的检测结果来控制驱动电动机203的驱动速度，当检测结果为 比例传感器205.控制装置201被构造为使得在标尺传感器205给出的检测结果中没有异常的状态下，同时基于检测之间的比较来控制驱动马达203的驱动速度 编码器202的结果和编码器目标值，比例尺传感器205的检测结果与预定目标值之间的比较; 并且基于比较结果，在预定的定时执行校正编码器目标值的目标值校正处理。

公开(公告)号：JP2013101208A

公开(公告)日：2013-05-23

申请号：JP2011244404

申请日：2011-11-08

Applicant: Ricoh Co Ltd ,  株式会社リコー

Inventor： ICHIHASHI OSAMU ,  HAGA KOKICHI ,  MINBU RYUICHI ,  TAKAHASHI YASUSHI ,  SENGOKU KENJI ,  FUJITA JUNPEI ,  KATO YUJI

IPC: G03G15/16

Abstract: PROBLEM TO BE SOLVED: To provide a transfer device that is provided to an image forming apparatus such as a copier, printer, facsimile, or plotter, suppresses power consumption and deterioration over time of a transfer member and a transfer belt caused by the members being separated from each other, and prevents or suppresses stains on a recording medium caused by a pattern image on the transfer belt being adhered to the transfer member without using cleaning means for the transfer member; and an image forming apparatus including the transfer device.SOLUTION: When a pattern image for image adjustment is carried on a transfer belt 11, distance control means makes a first distance T2 that is a distance when a position on the transfer belt 11 where the pattern image is carried faces a transfer member 17 larger than a second distance T1 when a position on the transfer belt 11 where the pattern image is not carried faces the transfer member 17.

Abstract translation: 要解决的问题：为了提供一种提供给诸如复印机，打印机，传真机或绘图仪的图像形成装置的转印装置，可以抑制由于由转印构件和转印带引起的功率消耗和随时间的劣化 所述构件彼此分离，并且防止或抑制由所述转印带上的图案图像引起的记录介质上的污渍粘附到所述转印构件，而不使用所述转印构件的清洁装置; 以及包括转印装置的图像形成装置。 解决方案：当转印带11上承载用于图像调整的图案图像时，距离控制装置形成第一距离T2，该距离T2是当转印带11上承载图案图像的位置面对转印部件时的距离 当转印带11上不存在图案图像的位置时，大于第二距离T1的17大于转印部件17.版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012246070A

公开(公告)日：2012-12-13

申请号：JP2011116991

申请日：2011-05-25

Applicant: Ricoh Co Ltd ,  株式会社リコー

Inventor： KATO YUJI ,  MINBU RYUICHI ,  WATANABE YOHEI ,  ICHIHASHI OSAMU

IPC: B65H5/02 ,  B65H5/22 ,  G03G15/00

Abstract: PROBLEM TO BE SOLVED: To provide a recording medium conveying device that conveys a recording medium such as paper while sucking it with negative pressure and strikes a balance between prevention of negative-pressure reduction and deterioration prevention at a connecting position of ducts, and to provide an image forming apparatus including the same, such as a copying machine, a printer, a facsimile, and a plotter.SOLUTION: The device includes: a conveyance unit 40 including the duct 51 for generating negative pressure for causing a conveyance member to suck the recording medium; and the duct 52 that is connected with the duct 51 when the conveyance unit 40 is at a conveyance position for the conveyance unit allowing the conveyance member to convey the recording medium and is separated from the duct 51 when the conveyance unit 40 is at a departure position where the conveyance unit 40 is departed from the conveyance position. The ducts 51 and 52 include slopes 51c and 52c that are inclined to a direction where the conveyance unit 40 moves from the removal position toward the conveyance position and are mutually joined upon the movement to couple the ducts 51 and 52 with each other.

Abstract translation: 要解决的问题：为了提供一种记录介质输送装置，其在以负压吸引的同时传送诸如纸之类的记录介质并且在管道的连接位置处防止减压和防止劣化的平衡， 并且提供包括其的图像形成装置，例如复印机，打印机，传真机和绘图机。 解决方案：该装置包括：输送单元40，包括用于产生负压以使输送构件吸入记录介质的管道51; 以及当输送单元40处于用于输送单元的输送位置时允许输送构件输送记录介质并且当输送单元40处于离开时与导管51分离的导管52与导管51连接的管道52 输送单元40离开输送位置的位置。 管道51,52包括斜面51c，52c，倾斜部51c和52c相对于传送单元40从移除位置朝向传送位置移动的方向倾斜，并且在运动中相互连接以将管道51和52彼此连接。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012233999A

公开(公告)日：2012-11-29

申请号：JP2011101516

申请日：2011-04-28

Applicant: Ricoh Co Ltd ,  株式会社リコー

Inventor： WATANABE YOHEI ,  MINBU RYUICHI ,  ICHIHASHI OSAMU ,  KATO YUJI ,  SENGOKU KENJI ,  FUJITA JUNPEI

IPC: G03G15/16

Abstract: PROBLEM TO BE SOLVED: To provide a recording medium conveying device that provides stable conveyance force at a low cost, ensures stable behavior of a recording medium in entering the conveying device, and suppresses conveyance skew to stably convey the recording medium.SOLUTION: A recording medium conveying device 400 includes a conveying member 402 that conveys a sheet-like recording medium P carrying a toner image by adsorbing the recording medium P on a surface 402a thereof. In the recording medium conveying device 400, a conveying member 402B at a central part in a width direction W that intersects with the conveying direction X of the recording medium is arranged closer to a contact surface Pd of the recording medium adsorbed by the surface of the conveying member, than conveying members 401A, 401C that are provided adjacent to both-ends of the conveying member 402B.

Abstract translation: 要解决的问题：为了提供以低成本提供稳定输送力的记录介质输送装置，确保记录介质进入输送装置的稳定行为，并且抑制输送歪斜以稳定地传送记录介质。 解决方案：记录介质传送装置400包括传送构件402，传送构件402通过将记录介质P吸附在其表面402a上来传送携带调色剂图像的片状记录介质P. 在记录介质传送装置400中，在与记录介质的传送方向X相交的宽度方向W的中心部分处的传送部件402B被布置成更接近于被记录介质的表面吸附的记录介质的接触表面Pd 输送构件比与输送构件402B的两端相邻设置的输送构件401A，401C。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012168314A

公开(公告)日：2012-09-06

申请号：JP2011028420

申请日：2011-02-14

Applicant: Ricoh Co Ltd ,  株式会社リコー

Inventor： ICHIHASHI OSAMU ,  MINBU RYUICHI ,  SENGOKU KENJI ,  FUJITA JUNPEI

IPC: G03G15/16

Abstract: PROBLEM TO BE SOLVED: To provide an image forming apparatus in which transfer means for black is made to be brought into contact with a transfer belt and the others of transfer means are made to be spaced from the transfer belt in a monochrome mode.SOLUTION: In an image forming apparatus, each of transfer rollers 13K, 13Y, 13M, and 13C is positioned at a transfer position in a color mode and, in a monochrome mode, the transfer roller 13K in an image making part for black image is at the transfer position and the transfer rollers 13Y, 13M, and 13C other than that are moved to a spaced position. Also, a backup roller 22 the position of which is rotatably fixed is provided on the transfer roller-installed side of an intermediate transfer belt 3. The backup roller 22 is, when the transfer rollers 13 in all the image making parts are at the transfer position, spaced from the intermediate transfer belt 3, and provided at the position contacted with the intermediate transfer belt 3, when in the monochrome mode, the transfer roller in the image making part for the black image is positioned at the transfer position and the others of transfer means other than that are moved to the spaced position.

Abstract translation: 要解决的问题：提供一种图像形成装置，其中使黑色转印装置与转印带接触，并且转印装置的其它转印装置被制成与单色模式与转印带间隔开 。 解决方案：在图像形成装置中，转印辊13K，13Y，13M和13C中的每一个以彩色模式位于转印位置，并且在单色模式中，转印辊13K在图像形成部分中用于 黑色图像处于转印位置，并且除此之外的转印辊13Y，13M和13C被移动到间隔位置。 此外，位于中间转印带3的转印辊安装侧设置有位置可旋转地固定的支撑辊22.当所有图像制作部中的转印辊13处于转印 位置，与中间转印带3间隔开，并且设置在与中间转印带3接触的位置处，当处于单色模式时，用于黑色图像的图像形成部分中的转印辊位于转印位置，而其他 不同于其的传送装置移动到间隔位置。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011246224A

公开(公告)日：2011-12-08

申请号：JP2010120436

申请日：2010-05-26

Applicant: Ricoh Co Ltd ,  株式会社リコー

Inventor： MINBU RYUICHI ,  SENGOKU KENJI ,  FUJITA JUNPEI ,  ICHIHASHI OSAMU

IPC: B65H29/52 ,  B65H5/02 ,  G03G15/00 ,  G03G15/20

Abstract: PROBLEM TO BE SOLVED: To provide an image forming device provided with a relay conveyance unit which conveys a recording medium from a transfer unit to a fixing unit by a conveying member whose width is shorter than that of the recording medium, and in which gloss unevenness in the width direction of the recording medium is suppressed.SOLUTION: In the image forming device provided with the relay conveyance unit 75 which conveys transfer paper from the transfer unit toward a fixing entrance guide plate 83 of the fixing unit 80 by surface-moving a conveying belt 76 whose width is shorter than that of the transfer paper, an edge of the fixing entrance guide plate on the relay conveyance unit side is formed so that the part facing the conveying belt forms a recess 83a in the width direction of the transfer paper with respect to the part not facing the conveying belt 76.

Abstract translation: 要解决的问题：提供一种图像形成装置，其具有中继输送单元，该继电器输送单元通过宽度短于记录介质的输送构件将记录介质从转印单元输送到定影单元，并且在 抑制了记录介质的宽度方向的光泽不均匀性。 解决方案：在具有继电器输送单元75的图像形成装置中，该继电器输送单元75通过表面移动宽度小于的定位单元80的输送带76，将转印纸从转印单元传送到定影单元80的定影入口导向板83。 转印纸的边缘在中继输送单元侧的固定入口引导板的边缘形成为使得面向输送带的部分相对于不面向转印纸的部分在转印纸的宽度方向上形成凹部83a 输送带76.版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011242657A

公开(公告)日：2011-12-01

申请号：JP2010115605

申请日：2010-05-19

Applicant: Ricoh Co Ltd ,  株式会社リコー

Inventor： ICHIHASHI OSAMU ,  MINBU RYUICHI ,  SENGOKU KENJI ,  FUJITA JUNPEI

IPC: G03G15/16 ,  G03G15/00

CPC classification number: G03G15/1665 ,  G03G15/167 ,  G03G2215/0129 ,  G03G2215/0193

Abstract: PROBLEM TO BE SOLVED: To provide an image forming apparatus in which a contact member, which is applied with a voltage from voltage application means on the apparatus main body side and supported by a rotating member, is brought into contact with a stable pressure with a member to be contacted.SOLUTION: A primary transfer section comprises a primary transfer roller 62, a roller supporting bracket 71, a tension spring, a rotating bias terminal 72, and a power supply 80. It also comprises a main body side bias terminal 75, which is fixed to a rotating fulcrum shaft 73 and electrically connected to the power supply 80, and a compression spring 76, which electrically connects the main body side bias terminal 75 and the rotating bias terminal 72. The compression spring 76 is arranged along the rotating fulcrum shaft 73 and by its contact in the direction of the shaft, the main body side bias terminal 75 and the rotating bias terminal 72 are electrically connected.

Abstract translation: 要解决的问题：提供一种图像形成装置，其中在设备主体侧施加电压施加装置的电压并由旋转构件支撑的接触构件与稳定的 压力与要联系的成员。 解决方案：一次转印部分包括一次转印辊62，辊支撑架71，拉伸弹簧，旋转偏置端子72和电源80.它还包括主体侧偏置端子75，其中 被固定到旋转支点轴73并电连接到电源80，以及压缩弹簧76，其将主体侧偏置端子75和旋转偏置端子72电连接。压缩弹簧76沿着旋转支点 轴73并且通过其在轴的方向上的接触，主体侧偏置端子75和旋转偏置端子72电连接。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011133653A

公开(公告)日：2011-07-07

申请号：JP2009292927

申请日：2009-12-24

Applicant: Ricoh Co Ltd ,  株式会社リコー

Inventor： MINBU RYUICHI ,  SENGOKU KENJI ,  FUJITA JUNPEI ,  ICHIHASHI OSAMU

IPC: G03G15/16 ,  G03G21/00

CPC classification number: G03G15/167 ,  G03G15/1605

Abstract: PROBLEM TO BE SOLVED: To provide a transfer device in which both a shock jitter and a transfer failure are prevented from occurring, and rotation loads and vibrations applied to an image carrier, both being caused due to collision of counter members, are reduced to obtain an excellent image. SOLUTION: An image-carrying surface 21a of the image carrier and a contact surface 30a of the counter member 30 are spaced apart from each other by a contacting/separating means. A recording medium P is supplied to a transfer nip N between the image-carrying surface and the contact surface by a recording medium-supplying means. The contacting/separating means includes cams 50 and 51, and a cam-driving means for rotatably driving the cams. A cam outer-peripheral surface is formed so that: the image-carrying surface and the contact surface are separated from each other when the cam is located in a first rotation position; and the image-carrying surface and the contact surface are brought into contact with each other when the cam is located in a second rotation position. Before the recording medium enters the transfer nip, the cam starts rotating from the first rotation position A toward the second rotation position B at a predetermined velocity, thereby accelerating the rotating velocity of the cam. When the recording medium enters the transfer nip, the cam is located at the second rotation position B, the image-carrying surface and the contact surface are brought into contact with each other, and the pressure of a pressure means 45 is applied on the transfer nip. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：为了提供防止发生冲击抖动和转印失败的转印装置，并且由于计数器构件的碰撞而引起的施加到图像载体的旋转负载和振动都是 减少以获得优异的图像。 解决方案：图像载体的图像承载表面21a和计数器构件30的接触表面30a通过接触/分离装置彼此间隔开。 记录介质P通过记录介质供给装置供应到图像承载表面和接触表面之间的转印夹持部N。 接触/分离装置包括凸轮50和51，以及用于可旋转地驱动凸轮的凸轮驱动装置。 凸轮外周表面形成为：当凸轮位于第一旋转位置时，图像承载表面和接触表面彼此分离; 并且当凸轮位于第二旋转位置时，图像承载表面和接触表面彼此接触。 在记录介质进入转印辊隙之前，凸轮开始以预定速度从第一旋转位置A朝向第二旋转位置B旋转，从而加速凸轮的转速。 当记录介质进入传送辊隙时，凸轮位于第二旋转位置B，使图像承载表面和接触表面彼此接触，并且压力装置45的压力施加在传送 掐。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010256459A

公开(公告)日：2010-11-11

申请号：JP2009103879

申请日：2009-04-22

Applicant: Ricoh Co Ltd ,  株式会社リコー

Inventor： ICHIHASHI OSAMU

IPC: G03G15/16

CPC classification number: G03G15/0136 ,  G03G15/1605 ,  G03G15/161 ,  G03G15/1615 ,  G03G15/5054 ,  G03G2215/00059 ,  G03G2215/0193 ,  G03G2221/1642

Abstract: PROBLEM TO BE SOLVED: To avoid a photoreceptor from being uselessly driven, to make a scale sensor 71 detect a plurality of marks provided in an intermediate transfer belt 61, even while the intermediate transfer belt 61 is moved by a contact and separation means, and to highly accurately suppress color shift caused by the speed fluctuations of the intermediate transfer belt 61.
SOLUTION: The scale sensor 71 is fixed to a first bracket 72 to be moved together with the first bracket 72 moved by the contact and separation means not shown in the figure and a primary transfer roller 62K for K held by the first bracket 72. A distance between the intermediate transfer belt 61 and the scale detection sensor 71 is made constant regardless of a contact and separation operation for rocking the first bracket 72.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：为了避免感光体被无用地驱动，即使在通过接触和分离移动中间转印带61的同时，使刻度传感器71检测设置在中间转印带61中的多个标记 意味着并且高度精确地抑制由中间转印带61的速度波动引起的色偏。解决方案：标尺传感器71固定到第一支架72，以与通过触点移动的第一支架72一起移动 并且图中未示出的分离装置和由第一支架72保持的K的一次转印辊62K。中间转印带61和标尺检测传感器71之间的距离被制定为恒定的，而不管用于摇摆的接触和分离操作 第一支座72.版权所有（C）2011，JPO＆INPIT