专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US07174124B2 Tandem color image forming apparatus with an image transfer belt and backup roller 失效
标题翻译：具有图像转印带和支撑辊的串联彩色图像形成装置
公开(公告)号：US07174124B2
公开(公告)日：2007-02-06
申请号：US10660699
申请日：2003-09-12
申请人： Hitoshi Ishibashi , Takayuki Maruta , Yuuji Sawai , Takahiro Yoshikawa , Atsushi Takehara
发明人： Hitoshi Ishibashi , Takayuki Maruta , Yuuji Sawai , Takahiro Yoshikawa , Atsushi Takehara
IPC分类号： G03G15/01
CPC分类号： G03G15/1675 , G03G15/0131
摘要： An image forming apparatus of the present invention disclosed is of the type sequentially transferring toner images from a plurality of photoconductive drums to a sheet being conveyed by an image transfer belt or an intermediate image transfer belt one above the other with bias applying members to thereby form a composite color image. Backup rollers, contacting the inside surface of the belt, each have volumetric resistivity of 109 Ω·cm or above and ten-point mean surface roughness Rz of 6 μm or above.
摘要翻译：公开的本发明的图像形成装置是将调色剂图像从多个感光鼓顺序地转印到由图像转印带或中间图像转印带一起在另一个之上传送的纸张的类型，其中偏压施加部件形成复合彩色图像。与带内表面接触的支承辊各自的体积电阻率为10Ω·cm以上，10点平均表面粗糙度Rz为6μm以上。

12. 发明授权

US07139512B2 Charging device, process cartridge and image forming apparatus 有权
标题翻译：充电装置，处理盒和成像装置
公开(公告)号：US07139512B2
公开(公告)日：2006-11-21
申请号：US11271732
申请日：2005-11-14
申请人： Akiyo Namiki , Takayuki Maruta
发明人： Akiyo Namiki , Takayuki Maruta
IPC分类号： G03G15/02
CPC分类号： G03G15/02 , G03G15/0233 , G03G15/025
摘要： A charging device includes a charging member disposed opposite to a surface of an image carrier. The image carrier is charged by applying a voltage to the charging member, and the charging member includes a substrate and a resistor layer thereon. The resistor layer is disposed with two spacers contacting with the image carrier, so that a gap is created between the image carrier and the resistor layer between the two spacers, wherein width variation of the gap with time is prevented. The end portions of the resistor layer of the charging member protrude above the resistor layer between them, and the spacers are constituted by protrudent fractions of the end portions of the resistor layer.
摘要翻译：充电装置包括与图像载体的表面相对设置的充电构件。通过向充电部件施加电压来对图像载体进行充电，并且充电部件在其上包括基板和电阻层。电阻层设置有与图像载体接触的两个间隔物，使得在两个间隔物之间的图像载体和电阻层之间产生间隙，其中防止间隙的宽度变化。充电部件的电阻层的端部在它们之间的电阻层的上方突出，并且间隔物由电阻层的端部的突出部分构成。

13. 发明授权

US5671470A Color image forming device which changes developing bias when switching between developer units 失效
标题翻译：在显影单元之间切换时改变显影偏压的彩色图像形成装置
公开(公告)号：US5671470A
公开(公告)日：1997-09-23
申请号：US553776
申请日：1995-10-23
申请人： Takayuki Maruta , Hiroshi Takashima , Tomoji Ishikawa , Kazuyuki Sugihara , Shinji Kato , Katsuhiro Kosuge
发明人： Takayuki Maruta , Hiroshi Takashima , Tomoji Ishikawa , Kazuyuki Sugihara , Shinji Kato , Katsuhiro Kosuge
IPC分类号： G03G15/01 , G03G15/06 , G03G15/08
CPC分类号： G03G15/0121 , G03G15/065 , G03G2215/0177
摘要： An image forming device includes a plurality of developing devices and a photosensitive drum. Each of the developing devices includes a developer carrying roller. One of the developing devices is moved to a developing position confronting the photosensitive drum which is formed with a latent image. A first developing bias including a d.c. component and an a.c. component is applied to the developer carrying roller and developer on the developer carrying roller is rendered in contact with the latent image on the photosensitive drum so that the latent image is developed. On the other hand, when the developer on the developer carrying roller comes in contact with and separates from the photosensitive drum due to the movement of the developing device, a second developing bias is applied to the developer carrying roller. The second developing bias generates an electric field where the developer on the developer carrying roller is more reluctant to move toward the photosensitive drum as compared with the first developing bias. The second developing bias may include only a d.c. component.
摘要翻译：图像形成装置包括多个显影装置和感光鼓。每个显影装置包括显影剂承载辊。显影装置中的一个移动到与形成有潜像的感光鼓相对的显影位置。第一个发展中的偏见包括直流组件和a.c. 将显影剂承载辊施加到显影剂承载辊上并使显影剂承载辊上的显影剂与感光鼓上的潜像接触，使潜像显影。另一方面，当显影剂承载辊上的显影剂由于显影装置的移动而与感光鼓接触并与感光鼓分离时，第二显影偏压被施加到显影剂承载辊上。与第一显影偏压相比，第二显影偏压产生电场，显影剂承载辊上的显影剂更不愿意向感光鼓移动。第二种发展中的偏见可能只包括直流零件。

14. 发明授权

US07474867B2 Magnetic carrier, two-component developer, development method, development device and image forming apparatus of electrophotography 有权
标题翻译：磁性载体，双组分显影剂，显影方法，显影装置和电子照相成像装置
公开(公告)号：US07474867B2
公开(公告)日：2009-01-06
申请号：US11209770
申请日：2005-08-24
申请人： Takamasa Ozeki , Takayuki Maruta , Takuji Yoneda
发明人： Takamasa Ozeki , Takayuki Maruta , Takuji Yoneda
IPC分类号： G03G15/09
CPC分类号： G03G9/107 , G03G9/10 , G03G15/09
摘要： A two-component developer including toner and magnetic carriers is provided. The two-component developer is characterized in that when a development device including a developer bearing member bearing the two-component developer is operated under a development condition of an image forming apparatus using a quasi-photoconductor in which a 10 μm thick layer of tetrafluoroethylene resin is provided to a conductive material, the number of times of light emission occurring in a magnetic brush formed on the developer bearing member due to partial conduction in the magnetic brush is 10 times or less per second at an observation cross section that is perpendicular relative to a rotation axis of the developer bearing member.
摘要翻译：提供了包括调色剂和磁性载体的双组分显影剂。双组分显影剂的特征在于，当包含带有双组分显影剂的显影剂承载构件的显影装置在使用准光电导体的图像形成装置的显影条件下操作时，其中将10μm厚的四氟乙烯树脂层被提供给导电材料时，由于在磁刷中的部分导电而在形成于显影剂承载部件上的磁刷中发生的发光次数在相对于显影剂承载部件的旋转轴线。

15. 发明授权

US07139517B2 Developing method for an image forming apparatus and developing device using the same 有权
公开(公告)号：US07139517B2
公开(公告)日：2006-11-21
申请号：US11178488
申请日：2005-07-12
申请人： Shigekazu Enoki , Takayuki Maruta
发明人： Shigekazu Enoki , Takayuki Maruta
IPC分类号： G03G15/09
CPC分类号： G03G13/09
摘要： A developing method of the present invention develops a latent image formed on an image carrier with a two-ingredient type developer, which consists of toner grains and carrier grains retaining the toner grains thereon, deposited on a developer carrier in the form of brush chains. Assume that the brush chains on the developer carrier has a height of h as measured at a zero field point where the magnetic field formed by a main magnet is zero, and that a gap for development that is the shortest distance between the developer carrier and the image carrier is a, then a and h are equal to each other. Image quality is estimated by varying the combination of an angle θ between the gap and the zero field point, the outside diameter of the image carrier and the outside diameter of the developer carrier and the height h. A desirable or an optimum range of the results of estimation are selected to set various conditions.

16. 发明授权

US06823149B2 Image forming apparatus with variable speed transferring and fixing devices 失效
标题翻译：具有变速传送和固定装置的图像形成装置
公开(公告)号：US06823149B2
公开(公告)日：2004-11-23
申请号：US10373050
申请日：2003-02-26
申请人： Takahiro Yoshikawa , Takayuki Maruta , Hitoshi Ishibashi , Yuuji Sawai
发明人： Takahiro Yoshikawa , Takayuki Maruta , Hitoshi Ishibashi , Yuuji Sawai
IPC分类号： G03G1520
CPC分类号： G03G15/1605 , G03G15/2064 , G03G15/6591 , G03G2215/00497 , G03G2215/00945 , G03G2215/0119 , G03G2215/2045
摘要： An image forming apparatus of the present invention includes an intermediate image transfer belt to which a toner image is to be transferred from an image carrier, an image transferring device for transferring the toner image from the intermediate image transfer belt to a sheet, and a fixing device for fixing the toner image on the sheet. When the length of the sheet in the direction of conveyance is smaller than a distance between the image transferring device and the fixing device, a matching circuit varies only the speeds of the image transferring device and fixing device, but does not vary the speed of a device that executes a step preceding the image transfer step. The matching device then sets an interval between consecutive sheets matching with the varied speeds of the image transferring device and fixing device, thereby matching opposite sides with respect to the image transfer step to each other as to the number of sheets to be conveyed.
摘要翻译：本发明的图像形成装置包括：从图像载体向其转印调色剂图像的中间图像转印带;用于将调色剂图像从中间图像转印带转印到纸张上的图像转印装置，以及固定用于将调色剂图像定影在片材上的装置。当纸张在输送方向上的长度小于图像转印装置和定影装置之间的距离时，匹配电路仅改变图像转印装置和定影装置的速度，但不改变图像转印装置和定影装置的速度执行图像转印步骤之前的步骤的装置。匹配装置然后设置与图像转印装置和定影装置的变化速度匹配的连续纸张之间的间隔，从而将相对于图像转印步骤的相对侧相对于待传送的纸张的数量彼此匹配。

17. 发明授权

US6160569A Image forming apparatus capable of changing process line speed 有权
标题翻译：能够改变生产线速度的成像装置
公开(公告)号：US6160569A
公开(公告)日：2000-12-12
申请号：US294347
申请日：1999-04-20
申请人： Kota Fujimori , Takayuki Maruta
发明人： Kota Fujimori , Takayuki Maruta
IPC分类号： G03G15/00 , G03G15/16 , H04N1/04 , H04N1/113 , H04N1/12 , H04N1/29 , H04N1/40 , H04N1/407 , B41J2/435
CPC分类号： G03G15/5041 , G03G15/161 , G03G15/5037 , G03G2215/00042 , G03G2215/00054 , G03G2215/0177 , H04N1/0402 , H04N1/0414 , H04N1/0443 , H04N1/1135 , H04N1/12 , H04N1/295 , H04N1/40037 , H04N1/4005 , H04N1/4078
摘要： An image is generated by exposing the surface to a scanning laser beam in accordance with an image forming process. The intermediate image transfer member receives the image from the image carrying member and transfers it onto a recording sheet. A memory stores a plurality of values of process line speeds A for defining a speed of an image forming process in a sub-scanning direction, and a plurality of values of process line speeds B for defining a speed of the image transfer process. According to another aspect, a sensor detects a voltage of the photoconductor, a sensor detects an amount of toner deposition on the photoconductor member, a charging member provides a charge onto the photoconductor, a grid adjusting member controls a grid voltage of the charging member, a laser exposure unit exposes the photoconductor to a laser beam, an exposure adjusting member adjusts an amount of a laser beam exposure, and a development gamma detect member detects a development gamma line by performing a sequential operation. A controller detects the voltage of the photoconductor rotating in each of the process line speeds and determines optimum values of the grid voltage of the charging member and the amount of laser beam exposure from the laser exposure unit to obtain the respective required voltage level used by the grid adjusting member, and the after-exposure voltage used by the exposure adjusting member, on the basis of the detected voltage and with reference to information included in a reference table.
摘要翻译：通过根据图像形成处理将表面暴露于扫描激光束来生成图像。中间图像转印构件从图像承载构件接收图像并将其转印到记录纸上。存储器存储用于定义副扫描方向上的图像形成处理的速度的多个处理线速度值A以及用于定义图像转印处理的速度的多个处理线速度值B。根据另一方面，传感器检测感光体的电压，传感器检测感光体构件上的调色剂沉积量，充电构件向感光体提供电荷，栅格调节构件控制充电构件的电网电压，激光曝光单元将感光体暴露于激光束，曝光调节部件调节激光束曝光的量，并且显影伽马检测部件通过执行顺序操作来检测显影伽马线。控制器检测在每个处理线速度中旋转的感光体的电压，并且确定充电部件的电网电压的最佳值和来自激光曝光单元的激光束曝光量，以获得由栅格调整构件和曝光调整构件所使用的曝光后电压之间的差异，并且参考包含在参考表中的信息。

18. 发明授权

US5860038A Apparatus and method for detecting developing ability of an image forming apparatus 失效
标题翻译：用于检测图像形成装置的显影能力的装置和方法
公开(公告)号：US5860038A
公开(公告)日：1999-01-12
申请号：US864691
申请日：1997-05-28
申请人： Shinji Kato , Kouta Fujimori , Takayuki Maruta
发明人： Shinji Kato , Kouta Fujimori , Takayuki Maruta
IPC分类号： G03G15/00 , G03G15/08
CPC分类号： G03G15/5041 , G03G2215/00042 , G03G2215/0891
摘要： An image forming apparatus includes an photoconductive drum, a charger, an exposing device, a developing device and a transferring device. A photo-sensor is disposed around the photoconductive drum. The photo-sensor senses the intensity of the reflected light from the surface of the photoconductive drum and the reflected light from the reference toner image formed on the photoconductive drum. The intensity of the emitted light from photo-sensor is changed corresponding to a continuous lighting time of the photo-sensor. Therefore, the intensity is compensated in response to the continuous lighting time of the photo-sensor. As a result, accurate toner density is detected.
摘要翻译：图像形成装置包括感光鼓，充电器，曝光装置，显影装置和转印装置。光电传感器设置在感光鼓周围。光电传感器感测来自感光鼓的表面的反射光的强度和形成在感光鼓上的基准调色剂图像的反射光。光传感器发出的光的强度随光传感器的连续点亮时间而变化。因此，响应于光传感器的连续点亮时间来补偿强度。结果，检测到准确的调色剂浓度。

19. 发明授权

US4916547A Color image forming apparatus 失效
标题翻译：彩色图像形成装置
公开(公告)号：US4916547A
公开(公告)日：1990-04-10
申请号：US198855
申请日：1988-05-26
申请人： Akio Katsumata , Mitsuo Hasebe , Yoshihiro Mitekura , Hiroshi Hosaka , Itaru Matsuda , Kotaro Yonenaga , Takayuki Maruta , Masaaki Kogure
发明人： Akio Katsumata , Mitsuo Hasebe , Yoshihiro Mitekura , Hiroshi Hosaka , Itaru Matsuda , Kotaro Yonenaga , Takayuki Maruta , Masaaki Kogure
IPC分类号： G03G15/01 , G03G15/16 , H04N1/50
CPC分类号： H04N1/506 , G03G15/0194 , G03G2215/0119 , G03G2215/0161
摘要： An image forming apparatus of the type producing a single composite color image on a paper which is transported by a belt by transferring image components of different colors to the paper in register with each other. The apparatus reduces with a simple construction the positional deviation of the image components which occurs in an intended direction of paper transport. Recording devices individually adapted for black, cyan, magenta and yellow are arranged side by side. Pattern images for measurement each being associated with a respective one of those colors are formed on the belt. A timing at which each of the pattern images arrives is sensed and counted. The count is compared with a reference value to calculate an amount of deviation. Write start timing signals each being associated with a particular color are generated which are individually variable on the basis of the deviation calculated. The pattern images of the respective colors are each generated by using a write start timing associated with the color as a reference, and the pattern to be provided by any of the recording devices is outputted on a downstream side of the belt relative to the pattern to be provided by another recording device which is located downstream of the first-mentioned recording device.
摘要翻译：一种在纸张上产生单一复合彩色图像的图像形成装置，其通过将不同颜色的图像分量传送到纸张而被传送的纸张彼此对准。该装置以简单的结构减少了在纸张传送的预期方向上发生的图像分量的位置偏差。分别适用于黑色，青色，品红色和黄色的记录装置并排布置。在带上形成有与这些颜色中的相应颜色相关联的用于测量的图案图像。每个图案图像到达的定时被感测和计数。将计数与参考值进行比较以计算偏差量。生成与特定颜色相关联的写入开始定时信号，其基于计算的偏差而单独变化。各颜色的图案图像各自通过使用与颜色相关联的写入开始定时作为基准来生成，并且由任何记录装置提供的图案相对于图案在带的下游侧输出到由位于第一记录装置下游的另一记录装置提供。

20. 再颁专利

USRE41934E1 Image forming system 失效
标题翻译：图像形成系统
公开(公告)号：USRE41934E1
公开(公告)日：2010-11-16
申请号：US11083329
申请日：2005-03-18
申请人： Takayuki Maruta , Takahiro Yamazaki
发明人： Takayuki Maruta , Takahiro Yamazaki
IPC分类号： G03G15/01
CPC分类号： G03G15/0126 , G03G2215/0177
摘要： An image forming system is disclosed which can prevent toner stain adhered onto an image bearing member at the time of switching from one developing unit to another from adhering to an image area on an intermediate transfer member and which can thereby prevent the deterioration of image quality. Latent images formed on a photoreceptor drum are developed by developing units in a revolver developing unit, toner images thus formed are primarily transferred in an overlapped state onto an intermediate transfer belt in a primary transfer section, and the thus primarily transferred toner images are together transferred secondarily onto a transfer paper. In this image forming system, a revolving operation of the revolver developing unit is controlled so that an area on the photoreceptor drum with which a developer contained in a Bk developing unit comes into contact upon 22.5° revolution of the revolver developing unit from a home position with consequent movement of the Bk developing unit to a developing position contacts a not-to-be-transferred area on the intermediate transfer belt in the primary transfer section. By so doing, toner stain caused by the Bk developing unit which has moved to the developing position does not exert any influence on the toner images formed on the intermediate transfer belt.
摘要翻译：公开了一种图像形成系统，其可以防止在从一个显影单元切换到另一个显影单元时从附着到中间转印部件上的图像区域上附着到图像承载部件上的调色剂污渍，从而可以防止图像质量的劣化。形成在感光鼓上的潜像通过在左轮显影单元中的显影单元显影，这样形成的调色剂图像主要以重叠的状态转印到一次转印部分中的中间转印带上，并且由此转印的调色剂图像一起转印二次转移到转印纸上。在该图像形成系统中，旋转显影单元的旋转操作被控制为使得在BK显影单元中包含的显影剂的感光鼓上的区域与来自原位的旋转显影单元22.5°旋转接触随着Bk显影单元随后的移动到显影位置，接触一次转印部分中的中间转印带上的不被转印区域。通过这样做，已经移动到显影位置的BK显影单元引起的调色剂污渍不会对形成在中间转印带上的调色剂图像产生任何影响。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式