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71. 发明授权

US06778797B2 Charging roller having elastic member 有权
标题翻译：具有弹性构件的充电辊
公开(公告)号：US06778797B2
公开(公告)日：2004-08-17
申请号：US09758192
申请日：2001-01-12
申请人： Masumi Sato , Yukiko Iwasaki , Hitoshi Ishibashi , Hiroshi Yoshinaga , Takatsugu Fujishiro , Masami Hiramatsu
发明人： Masumi Sato , Yukiko Iwasaki , Hitoshi Ishibashi , Hiroshi Yoshinaga , Takatsugu Fujishiro , Masami Hiramatsu
IPC分类号： G03G1502
CPC分类号： G03G15/0208 , G03G15/025
摘要： A charging device, an image forming apparatus including the charging device, an image carrier unit including the charging device and a charging roller, which faces a body to be charged and is applied with a voltage, are disclosed. The charging roller includes a metallic core and an elastic member covering the core. Films are respectively wrapped around and adhered to the opposite end portions of the elastic member. Springs press the charging roller toward a body to be charged, causing the elastic member to deform due to compression. The maximum deformation of the films, which deform along the outer periphery of the elastic member, is selected to be smaller than the thickness of each film in the radial direction of the charge roller. A gap is therefore formed between the elastic member and the body to be charged. This prevents the portion of the elastic member, which corresponds to an image forming region, other than opposite end portions from contacting the surface of the body to be charged.
摘要翻译：公开了一种充电装置，包括充电装置的图像形成装置，包括充电装置的图像载体单元和充电辊，其面向要充电的主体并施加电压。充电辊包括金属芯和覆盖芯的弹性构件。膜分别缠绕并粘附到弹性构件的相对端部。弹簧将充电辊朝向要充电的主体按压，导致弹性构件由于压缩而变形。沿着弹性构件的外周变形的膜的最大变形选择为小于充电辊的径向上的每个膜的厚度。因此，弹性构件和被充电体之间形成间隙。这防止弹性构件对应于除了相对端部以外的图像形成区域的部分与身体的表面接触的部分被充电。

72. 发明授权

US5659843A Image transferring device for image forming equipment 失效
标题翻译：图像形成设备图像传送装置
公开(公告)号：US5659843A
公开(公告)日：1997-08-19
申请号：US398790
申请日：1995-03-06
申请人： Satoshi Takano , Itaru Matsuda , Yuko Harasawa , Hitoshi Ishibashi , Masumi Sato , Megumi Otoshi
发明人： Satoshi Takano , Itaru Matsuda , Yuko Harasawa , Hitoshi Ishibashi , Masumi Sato , Megumi Otoshi
IPC分类号： G03G15/16 , G03G15/20
CPC分类号： G03G15/1675 , G03G2215/1623 , G03G2215/1661
摘要： An image transferring device for image forming equipment and capable of insuring desirable image transfer by obviating premature image transfer, print, and the leak of transfer bias. A belt causes a toner image to be transferred from an image carrier to a transfer medium while conveying it. A bias member applies a charge to the belt. A feedback current from the belt flows through a feedback electrode. A constant current control device executes constant current control such that the difference between a current to flow from the bias member to the belt and the feedback current to flow from the belt to the feedback electrode remains constant. The constant current control is based on PWM having a spatial frequency of either lower than 0.5 cycles/mm or higher than 1.5 cycles/mm. In addition, a current sensing resistor is disposed between a first and second node wherein the first node is connected to a power source for applying current to the bias member and the feedback electrode and the second node is connected to the image carrier.
摘要翻译：一种用于图像形成设备的图像传送装置，并且能够通过避免过早的图像传送，打印和传送偏压的泄漏来确保期望的图像传送。皮带使得调色剂图像在传送的同时从图像载体转印到转印介质上。偏置构件向带施加电荷。来自带的反馈电流流过反馈电极。恒流控制装置执行恒定电流控制，使得从偏压构件到带的流动的电流和从带到反馈电极的反馈电流之间的差保持恒定。恒定电流控制基于具有小于0.5个循环/ mm或高于1.5个循环/ mm的空间频率的PWM。此外，电流感测电阻器设置在第一和第二节点之间，其中第一节点连接到用于向偏置构件施加电流的电源，并且反馈电极和第二节点连接到图像载体。

73. 发明授权

US5438401A Multicolor image forming method and apparatus therefor 失效
标题翻译：多色成像方法及其设备
公开(公告)号：US5438401A
公开(公告)日：1995-08-01
申请号：US311716
申请日：1994-09-23
申请人： Hisao Murayama , Hitoshi Ishibashi
发明人： Hisao Murayama , Hitoshi Ishibashi
IPC分类号： G03G15/01 , G03G15/00 , G03G15/02 , G03G15/06 , G03G21/00
CPC分类号： G03G15/0152 , G03G15/0163
摘要： An image forming apparatus capable of producing pure and clear-cut bicolor images stably over a long period of time. After a photoconductive element has been uniformly charged by a first charger, a first latent image is formed on the element by first exposure. The first latent image is developed by a black toner stored in a first developing unit. Subsequently, after the photoconductive element has been charged by a second charger implemented by a scorotron charger, a second latent image is formed on the element by second exposure. The second latent image is developed by a red toner stored in a second developing unit by reversal development. The resulting two toner images are transferred to a recording medium. The grid voltage of the second charger is selected to be lower than the potential deposited on the photoconductive element by the first charger. As a result, the portion of the image carrier where the black toner is deposited by the second developing unit has a lower potential than the portion where the black toner is not deposited. This increases the difference between the potential of the portion where the black toner is not deposited and the bias potential for development, thereby insuring a margin against the contamination of the background. At the same time, the difference between the potential of the portion where the black toner is deposited and the bias potential for development is reduced to prevent the black toner from flying away from the photoconductive element.
摘要翻译：一种图像形成装置，能够长时间稳定地生成纯净的双色图像。在光电元件已被第一充电器均匀充电之后，通过第一次曝光在元件上形成第一潜像。第一潜像由存储在第一显影单元中的黑色调色剂显影。随后，在光电导体元件已由通过电晕充电器实现的第二充电器充电之后，通过第二曝光在元件上形成第二潜像。通过反转显影存储在第二显影单元中的红色调色剂显影第二潜像。所得到的两个调色剂图像被转印到记录介质上。第二充电器的电网电压被选择为低于由第一充电器沉积在光电导元件上的电位。结果，由第二显影单元沉积黑色调色剂的图像载体的部分的电位低于未沉积黑色调色剂的部分。这增加了不沉积黑色调色剂的部分的电位与显影偏压潜力之间的差异，从而确保了背景污染的余地。同时，减少黑色调色剂沉积部分的电位与显影偏压电位之间的差异，以防止黑色调色剂离开光导元件。

74. 发明授权

US07796902B2 Image forming condition adjustment control for image forming apparatus 有权
标题翻译：图像形成装置的图像形成条件调整控制
公开(公告)号：US07796902B2
公开(公告)日：2010-09-14
申请号：US12382506
申请日：2009-03-18
申请人： Naoto Watanabe , Tatsuya Niimi , Hitoshi Ishibashi
发明人： Naoto Watanabe , Tatsuya Niimi , Hitoshi Ishibashi
IPC分类号： G03G15/00
CPC分类号： G03G15/5037
摘要： An image forming apparatus includes a charge unit, an exposure unit, an exposure voltage detector, a development unit, and a concentration detector. The exposure voltage detector detects a potential of latent image formed as a test pattern on an image carrier. The concentration detector detects concentration of developed test pattern. The image forming apparatus further includes an exposure power controller, an exposure ratio controller, a charging voltage controller, a development bias voltage controller, and an image forming condition adjustment controller. A suitable image forming condition is computed using test patterns formed by changing combinations of charging voltage, exposure power, and exposure duty. The charging voltage is changed in two levels or more. The exposure power is changed in three levels or more. The exposure duty per unit area is changed in two levels or more.
摘要翻译：图像形成装置包括充电单元，曝光单元，曝光电压检测器，显影单元和浓度检测器。曝光电压检测器检测在图像载体上形成为测试图案的潜像的电位。浓度检测器检测显影测试图案的浓度。图像形成装置还包括曝光功率控制器，曝光比率控制器，充电电压控制器，显影偏压控制器和图像形成条件调节控制器。使用通过改变充电电压，曝光功率和曝光占空比的组合形成的测试图案来计算合适的图像形成条件。充电电压在两个等级以上更改。曝光功率在三个等级以上更改。每单位面积的曝光负荷在两个等级以上更改。

75. 发明授权

US07344615B2 Method and apparatus for performing a charging process on an image carrying device 有权
标题翻译：在图像承载装置上进行充电处理的方法和装置
公开(公告)号：US07344615B2
公开(公告)日：2008-03-18
申请号：US11250485
申请日：2005-10-17
申请人： Masumi Sato , Hiroshi Yoshinaga , Yukiko Iwasaki , Hitoshi Ishibashi , Takatsugu Fujishiro , Masami Hiramatsu , Hiroko Hirano
发明人： Masumi Sato , Hiroshi Yoshinaga , Yukiko Iwasaki , Hitoshi Ishibashi , Takatsugu Fujishiro , Masami Hiramatsu , Hiroko Hirano
IPC分类号： B29C63/10
CPC分类号： G03G15/0233 , G03G15/0208 , G03G15/025 , Y10T428/1376 , Y10T428/24355 , Y10T428/25
摘要： A charge roller that includes a metal core, an elastic member configured wrapped around the metal core, and film members is disclosed. Each of the film members is wrapped around each end of the elastic member in a circumferential direction of the metal core such that at least a part of each of the film members exists at every position around the ends of the elastic member in an axial direction of the metal core. Portions of the film members do not overlap each other in an radial direction of the metal core.
摘要翻译：公开了一种充电辊，其包括金属芯，围绕金属芯构造的弹性构件和膜构件。每个薄膜构件在金属芯的圆周方向上围绕弹性构件的每个端部缠绕，使得每个薄膜构件的至少一部分存在于弹性构件的端部周围的每个位置的轴向方向上金属芯。膜构件的一部分在金属芯的径向方向上不重叠。

76. 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。

77. 发明申请

US20060239705A1 Image forming apparatus, method of calculating amount of toner transfer, methods of converting regular reflection ouput and diffuse reflection output, method of converting amount of toner transfer, apparatus for detecting amount of toner transfer, gradation pattern, and methods of controlling toner density and image density 有权
标题翻译：图像形成装置，调色剂转印量的方法，转换规则反射输出和扩散反射输出的方法，转印调色剂转印量的方法，调色剂转印量的装置，渐变图案以及调色剂密度和图像的控制方法密度
公开(公告)号：US20060239705A1
公开(公告)日：2006-10-26
申请号：US11475959
申请日：2006-06-28
申请人： Hitoshi Ishibashi
发明人： Hitoshi Ishibashi
IPC分类号： G03G15/00
CPC分类号： G03G15/5058 , G03G15/0194 , G03G15/50 , G03G15/5041 , G03G2215/00029 , G03G2215/00042 , G03G2215/00059 , G03G2215/00063 , G03G2215/00067 , G03G2215/0119 , G03G2215/0177
摘要： An amount of toner transfer on a reference pattern is calculated by using an optical detecting unit that detects both regular reflection light and diffuse reflection light from a detection target simultaneously, based on a relative ratio between a value obtained by subtracting a result of multiplying a “diffuse reflection output” by a “minimum value of a ratio between a regular reflection output and the diffuse reflection output” from the “regular reflection output” of the density detection reference pattern, and a value obtained by subtracting a result of multiplying the “diffuse reflection output” by a “minimum value of a ratio between the regular reflection output and the diffuse reflection output” from the “regular reflection output” in the background of a transfer belt or an intermediate transfer body.
摘要翻译：通过使用光学检测单元来计算参考图案上的调色剂转印量，该光学检测单元基于通过减去乘以“1”的结果获得的值之间的相对比率来同时检测来自检测对象的正反射光和漫反射光，通过“浓度检测基准图案”的“正反射输出”的“正反射输出与漫反射输出之间的比值的最小值”的漫反射输出，以及通过将“漫反射输出” 通过在转印带或中间转印体的背景中的“正反射输出”的“正反射输出和漫反射输出之间的比率的最小值”反射输出。

78. 发明申请

US20060222419A1 Alignment pattern detecting sensor, method of determining acceptance width of the alignment pattern detecting sensor, method of forming alignment pattern, and image forming apparatus 失效
标题翻译：对准图案检测传感器，确定对准图案检测传感器的接受宽度的方法，形成对准图案的方法以及图像形成装置
公开(公告)号：US20060222419A1
公开(公告)日：2006-10-05
申请号：US11406260
申请日：2006-04-19
申请人： Hitoshi Ishibashi , Noboru Sawayama
发明人： Hitoshi Ishibashi , Noboru Sawayama
IPC分类号： G03G15/01
CPC分类号： H04N1/00015 , G03G15/0173 , G03G15/0189 , G03G15/0194 , G03G2215/0161 , H04N1/00002 , H04N1/00018 , H04N1/00034 , H04N1/00045 , H04N1/00087 , H04N1/047 , H04N1/506
摘要： An image forming apparatus includes an alignment pattern and an alignment pattern detector that detects the alignment pattern. The alignment pattern is formed in such a manner that a line image of a reference color and a line image of a color other than the reference color are superposed on each other with a predetermined shift amount. An acceptance width of the alignment pattern detector is determined so that the acceptance width satisfies a relation with a writing density of the image forming apparatus and a line width of the alignment pattern, as follows: [acceptance width]>[line width]/(5.0627×[writing density(dpi)]−0.5331).
摘要翻译：图像形成装置包括对准图案和检测对准图案的对准图案检测器。对准图案形成为使得参考色的线图像和除了参考色之外的颜色的线图像以预定的偏移量相互重叠。确定对准图案检测器的接受宽度，使得接受宽度满足与图像形成装置的书写密度和对准图案的线宽度的关系，如下所示：<？in-line-formula description =“In 线公式“end =”lead“？> [accept width]> [line width] /（5.0627x [writing density（dpi））^{-0.5331 ）。 <？in-line-formula description =“In-line Formulas”end =“tail”？>}

79. 发明授权

US06519428B1 Image forming apparatus having mixed toner consumption mode 有权
标题翻译：具有混合调色剂消耗模式的图像形成装置
公开(公告)号：US06519428B1
公开(公告)日：2003-02-11
申请号：US09712178
申请日：2000-11-15
申请人： Megumi Ohtoshi , Masumi Sato , Hitoshi Ishibashi , Yoshinori Ozawa
发明人： Megumi Ohtoshi , Masumi Sato , Hitoshi Ishibashi , Yoshinori Ozawa
IPC分类号： G03G1500
CPC分类号： G03G15/0105 , G03G15/0121 , G03G15/0194 , G03G2215/0119
摘要： An image forming apparatus of the present invention includes a plurality of image carriers sequentially arranged in a direction of paper conveyance. Developing devices each form a toner image of particular color on one image carrier associated therewith. Cleaning devices each remove residual toner left on the surface of the associated image carriers after the transfer of the toner image to the recording medium. A toner recycling device is provided between the cleaning device located at the most upstream position in the direction of paper conveyance and the developing device associated therewith, but not provided between the cleaning device located at the most downstream position the developing device assigned therewith. With this configuration, the apparatus obviates troubles ascribable to the mixture of toner of different colors occurring in the most downstream developing device. In addition, at a time other than the time of transferring toner images from the image carriers to the recording medium, a controller activates a mixed toner consumption mode such that any one of the developing devices, other than a developing device located at most upstream position in the direction of conveyance of the recording medium, is caused to deposit toner on the image carrier which is than transferred to a recording medium carrier and then cleaned to remove the toner.
摘要翻译：本发明的图像形成装置包括顺序地沿着纸张传送方向布置的多个图像载体。显影装置各自在与其相关联的一个图像载体上形成特定颜色的调色剂图像。在将调色剂图像转印到记录介质之后，清洁装置每次去除留在相关联的图像载体表面上的剩余调色剂。调色剂回收装置设置在位于纸张传送方向上的最上游位置处的清洁装置与与其相关联的显影装置之间，但不设置在位于最下游位置处的清洁装置之间。利用这种结构，该装置避免了由于最下游显影装置中出现的不同颜色的调色剂的混合引起的麻烦。此外，除了将调色剂图像从图像载体转印到记录介质的时间之外的时间，控制器启动混合调色剂消耗模式，使得除显影装置之外的任何一个显影装置位于最上游位置在记录介质的传送方向上，将调色剂沉积在转印到记录介质载体上的图像载体上，然后清洁以除去调色剂。

80. 发明授权

US06470161B2 Apparatus for minimizing toner contamination on an image formation member 有权
标题翻译：用于使图像形成构件上的调色剂污染最小化的装置
公开(公告)号：US06470161B2
公开(公告)日：2002-10-22
申请号：US09826813
申请日：2001-04-06
申请人： Takatsugu Fujishiro , Masami Hiramatsu , Masumi Sato , Hitoshi Ishibashi , Hiroshi Yosinaga , Yukiko Iwasaki
发明人： Takatsugu Fujishiro , Masami Hiramatsu , Masumi Sato , Hitoshi Ishibashi , Hiroshi Yosinaga , Yukiko Iwasaki
IPC分类号： G03G1500
CPC分类号： G03G15/0208 , G03G15/0233 , G03G15/025 , G03G2215/025
摘要： To prevent deterioration of charge performance, which is caused by wear of a gap control member that keeps a charge roller into non-contact with the image carrier, the charge roller is brought into contact with a surface of a photosensitive drum via a pair of tape members as the gap control member that contacts with a coat and non-charge portion of the photosensitive drum. A gap G can be formed between an effective charge width portion of the charge roller and the surface of the photosensitive drum.
摘要翻译：为了防止由于使充电辊与图像载体不接触的间隙控制构件的磨损引起的充电性能的劣化，充电辊经由一对带子与感光鼓的表面接触作为与感光鼓的涂层和非充电部分接触的间隙控制构件的构件。可以在充电辊的有效充电宽度部分和感光鼓的表面之间形成间隙G.

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