公开(公告)号：EP1424608B1

公开(公告)日：2015-07-22

申请号：EP03025417.1

申请日：2003-11-05

申请人： Ricoh Company, Ltd.

发明人： Yoshida, Ken ,  Sawai, Yuuji ,  Ogiyama, Hiromi ,  Takehara, Atsushi ,  Kayahara, Shin ,  Kato, Shinji ,  Fujiwara, Yoshihiro

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

CPC分类号： G03G15/1605 ,  G03G2215/0119 ,  G03G2215/0164

公开(公告)号：EP1424608A3

公开(公告)日：2004-06-23

申请号：EP03025417.1

申请日：2003-11-05

申请人： Ricoh Company, Ltd.

发明人： Yoshida, Ken ,  Sawai, Yuuji ,  Ogiyama, Hiromi ,  Takehara, Atsushi ,  Kayahara, Shin ,  Kato, Shinji ,  Fujiwara, Yoshihiro

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

CPC分类号： G03G15/1605 ,  G03G2215/0119 ,  G03G2215/0164

摘要： An intermediate image transfer type of image forming apparatus of the present invention includes an image carrier (40), an intermediate image transfer body (10), primary image transferring means (62) for transferring a toner image from the image carrier (40) to the intermediate image transfer body (10), and secondary image transferring means (22) for transferring the toner image from the intermediate image transfer body (10) to a sheet. When the surface resistivity of the intermediate image transfer body (10) is measured by a method that repeatedly applies a voltage of 200 V for 60 seconds to the intermediate image transfer body (10) and grounds the intermediate image transfer body (10) for 10 seconds 1,000 consecutive times, a difference in absolute value between the logarithm of the first time of measurement and that of the thousandth time of measurement is 0.5 log Ω/□ or below.

摘要翻译： 本发明的中间图像转印型图像形成设备包括图像载体（40），中间图像转印体（10），用于将色调剂图像从图像载体（40）转印到图像载体（40）的主图像转印装置 中间图像转印体（10）和用于将来自中间图像转印体（10）的调色剂图像转印到纸张上的二次图像转印装置（22）。 当通过对中间图像转印体（10）重复施加200V电压60秒并将中间图像转印体（10）接地10的方法测量中间图像转印体（10）的表面电阻率时 秒连续1000次，第一次测量的对数与第一千次测量的对数之间的绝对值差为0.5logΩ/□或更低。

公开(公告)号：EP2068206B1

公开(公告)日：2015-10-14

申请号：EP08170647.5

申请日：2008-12-04

申请人： Ricoh Company, Ltd.

发明人： Sawai, Yuuji

IPC分类号： G03G15/16

CPC分类号： G03G15/162 ,  G03G2215/0129 ,  G03G2215/1614 ,  G03G2215/1623

公开(公告)号：EP2682822A2

公开(公告)日：2014-01-08

申请号：EP13165276.0

申请日：2013-04-25

申请人： Ricoh Company, Ltd.

发明人： Hozumi, Yoshiki ,  Asaoka, Akira ,  Sawai, Yuuji ,  Saeki, Kazuchika

IPC分类号： G03G15/16 ,  G03G15/00

摘要： A belt tracking system (40) for controlling the lateral position of a movable belt (3) entrained about a plurality of generally parallel rollers (51, 52, 53, 54) includes a roller shaft (6), a stationary member (42), and a slidable member (41). The roller shaft (6) extends outward in an axial direction (Z) from an axial end of a specific one (52) of the plurality of generally parallel rollers (51, 52, 53, 54). The stationary member (42) is positioned adjacent to the roller shaft (6) to define a first interfacial surface (42a) therealong. The slidable member (41) is co-movably coupled with the roller shaft (6) to define a second interfacial surface (41 a) therealong. The belt tracking system (40) includes means (60) for pressing the slidable member (41) against the stationary member (42) to maintain continuous contact between the first and second interfacial surfaces (42a, 41a).

摘要翻译： 用于控制夹带在多个大致平行的辊（51,52,53,54）上的可移动带（3）的横向位置的带跟踪系统（40）包括辊轴（6），固定构件（42） ，和可滑动构件（41）。 辊轴（6）从多个大致平行的辊（51,52,53,54）中的特定的一个（52）的轴向端部沿轴向方向（Z）向外延伸。 固定构件（42）定位成与辊轴（6）相邻以限定其上的第一界面（42a）。 可滑动构件（41）可与滚子轴（6）可移动地联接以在其上限定第二界面（41a）。 带跟踪系统（40）包括用于将可滑动构件（41）压靠在固定构件（42）上以保持第一和第二界面（42a，41a）之间的连续接触的装置（60）。

公开(公告)号：EP1429206B1

公开(公告)日：2010-11-03

申请号：EP03020470.5

申请日：2003-09-15

申请人： Ricoh Company, Ltd.

发明人： Ishibashi, Hitoshi ,  Maruta, Takayuki ,  Sawai, Yuuji ,  Takehara, Atsushi ,  Yoshikawa, Takahiro

IPC分类号： G03G15/16 ,  G03G15/01

CPC分类号： G03G15/1675 ,  G03G15/0131

公开(公告)号：EP1795972A1

公开(公告)日：2007-06-13

申请号：EP06025110.5

申请日：2006-12-05

申请人： Ricoh Company, Ltd.

发明人： Sawai, Yuuji

IPC分类号： G03G15/01

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

摘要： An image forming apparatus includes an image bearing member (20Y), supporting rollers (15,16), a belt-like-shaped medium (10), a primary transfer member (12Y), a secondary transfer member (5), and a grounded conductive roller. The image bearing member forms a toner image at a predetermined process speed. The belt-like shaped medium has a charge voltage. The primary transfer member sequentially transfers the toner image onto the belt-like-shaped medium and the secondary transfer member transfers the toner image onto a recording sheet (2). The conductive roller is arranged in contact with the belt-like shaped medium by a predetermined wrapping length. A relationship Tb

摘要翻译： 一种图像形成设备包括：图像承载部件（20Y），支承辊（15,16），带状形介质（10），一次转印构件（12Y），二次转印部件（5），和一个 导电接地辊。 所述图像承载部件以预定的处理速度形成调色剂图像。 带状形介质具有充电电压。 一次转印构件顺序地将调色剂图像转印到带状形介质和二次转印部件将调色剂图像转印到记录片材（2）的传输。 导电性辊在由一个预定的卷绕长度与带状形介质接触地布置。 的关系铽

公开(公告)号：EP1276019B1

公开(公告)日：2006-11-15

申请号：EP02015545.3

申请日：2002-07-11

申请人： Ricoh Company, Ltd.

发明人： Takahashi, Mitsuru ,  Sawai, Yuuji ,  Ogiyama, Hiromi ,  Kawagoe, Katsuya ,  Sugino, Akihiro ,  Katoh, Kohki

IPC分类号： G03G15/16

CPC分类号： G03G15/162 ,  G03G15/161 ,  G03G2215/0119 ,  G03G2215/1652 ,  G03G2215/1661

公开(公告)号：EP1857888B1

公开(公告)日：2018-01-17

申请号：EP07108265.5

申请日：2007-05-15

申请人： Ricoh Company, Ltd.

发明人： Sawai, Yuuji ,  Nakayama, Shinya

IPC分类号： G03G15/16 ,  G03G15/01

CPC分类号： G03G15/0131 ,  G03G15/162 ,  G03G2215/0119 ,  G03G2215/1614

摘要： An image forming apparatus includes an image carrier (40), an endless belt (10) whose front surface moves endlessly and contacts the image carrier to form a transfer nip, and a bias applying roller (62) configured to apply a transfer bias to a back surface of the endless belt. An image is formed of a toner having an additive embedded rate of not less than 40 percent. The toner includes a mother particle having a binder resin and a colorant, and an external additive. The bias applying roller (62) is located so as to satisfy a relationship, L > (A/2)+(B/2)+C, where A is a diameter of the image carrier (40), B is a diameter of the bias applying roller (62), C is a thickness of the endless belt (10), and L is a distance between centers of the image carrier and the bias applying roller, on a virtual plane perpendicular to an axis direction of the image carrier.

公开(公告)号：EP2749961A3

公开(公告)日：2017-12-27

申请号：EP13195772.2

申请日：2013-12-05

申请人： Ricoh Company, Ltd.

发明人： Hozumi, Yoshiki ,  Sugimoto, Naomi ,  Sawai, Yuuji ,  Saeki, Kazuchika

IPC分类号： G03G15/16

CPC分类号： B65G39/16 ,  B65G15/64 ,  B65G23/44 ,  G03G15/1615 ,  G03G2215/00143

摘要： A belt tracking system (50) for adjusting misalignment of a movable belt (3) in an axial direction of a plurality of rollers (51, 52, 53, 54) about which the movable belt (3) is entrained includes a slope member (41) and a stationary shaft guide (42). The slope member (41) is disposed at both ends of at least one of the plurality of rollers (51, 52, 53, 54) in the axial direction, to tilt the roller as the belt (3) moves in the axial direction. The stationary shaft guide (42) contacts the slope member (41). A distance between a contact point of the slope member (41) that contacts the stationary shaft guide (42) and an end portion of the slope member (41) in the axial direction is longer than a maximum traveling distance that the slope member (41) travels in the axial direction.

摘要翻译： 一种用于调节可移动带（3）在可移动带（3）所夹带的多个辊（51,52,53,54）的轴向方向上的未对准的带跟踪系统（50）包括倾斜构件 41）和一个固定的轴导向件（42）。 倾斜构件（41）设置在多个辊（51,52,53,54）中的至少一个的沿轴向方向的两端，以随着带（3）沿轴向方向移动而使辊倾斜。 固定轴引导件（42）接触倾斜构件（41）。 倾斜部件41的与静止轴引导件42接触的接触点与倾斜部件41的轴向端部之间的距离比倾斜部件41的最大行驶距离长， ）沿轴向行进。

公开(公告)号：EP2713216A2

公开(公告)日：2014-04-02

申请号：EP13180951.9

申请日：2013-08-20

申请人： Ricoh Company, Ltd.

发明人： Hozumi, Yoshiki ,  Sugimoto, Naomi ,  Sawai, Yuuji ,  Saeki, Kazuchika

IPC分类号： G03G15/16

CPC分类号： B65G39/16 ,  B65G15/64 ,  G03G15/1615 ,  G03G2215/00151

摘要： A belt tracking system (50) for controlling the lateral position of a movable belt (3) entrained about a plurality of generally parallel rollers (51-54) for moving in a trans-axial direction (x, Y) perpendicular to an axial direction (Z) in which the rollers extend parallel to each other includes a roller shaft (6), a slidable member (41), and a rotation restrictor (47). The roller shaft extends outward in the axial direction from an axial end of a specific one of the plurality of generally parallel rollers. The slidable member is slidably disposed around the roller shaft to move along the roller shaft as the belt moves laterally outward in the axial direction. The rotation restrictor is disposed adjacent to the slidable member to restrict rotation of the slidable member around the roller shaft.

摘要翻译： 一种用于控制夹带在多个大致平行的辊（51-54）上的可移动带（3）的横向位置的带跟踪系统（50），用于沿垂直于轴向方向（x，y）移动 （Z），其中辊彼此平行地延伸包括辊轴（6），滑动构件（41）和旋转限制器（47）。 辊轴从多个大致平行的辊中的特定一个的轴向端部沿轴向向外延伸。 滑动构件可滑动地设置在辊轴周围，当带沿轴向横向向外移动时沿着滚轴移动。 旋转限制器邻近可滑动构件设置以限制可滑动构件围绕辊轴的旋转。