专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明授权

US07796912B2 Image forming method and apparatus which uses alternating voltage to form an electric field for moving toner 有权
标题翻译：使用交流电压形成用于移动调色剂的电场的图像形成方法和装置
公开(公告)号：US07796912B2
公开(公告)日：2010-09-14
申请号：US12023544
申请日：2008-01-31
申请人： Yoshio Sakagawa , Tetsumaru Fujita , Yuji Nagatomo
发明人： Yoshio Sakagawa , Tetsumaru Fujita , Yuji Nagatomo
IPC分类号： G03G15/02
CPC分类号： G03G15/0258 , G03G2215/021
摘要： An image forming apparatus includes: an image carrying member having a movable surface; a charging device including a rotatable charging member which is supplied with a voltage including a direct voltage superimposed with an alternating voltage, and which contacts and charges the image carrying member; an electrostatic latent image forming device for forming an electrostatic latent image on the image carrying member; and a development device for developing the electrostatic latent image. The frequency of the alternating voltage is lower in a non-image forming area than in an image forming area. In the non-image forming area, the image carrying member is charged to a surface potential having a waveform shape in accordance with the alternating voltage, and the potential difference between the surface potential and the voltage applied to the charging member generates an electric field which moves toner adhering to the charging member to the image carrying member.
摘要翻译：图像形成装置包括：具有可移动表面的图像承载构件; 充电装置，包括：可旋转充电部件，其被提供有包括叠加有交流电压的直流电压的电压，并且对图像承载部件进行接触和充电; 用于在图像承载部件上形成静电潜像的静电潜像形成装置; 以及用于显影静电潜像的显影装置。非图像形成区域中的交流电压的频率低于图像形成区域。在非图像形成区域中，将图像承载部件充电到具有与交流电压相对应的波形形状的表面电位，并且表面电位与施加到充电部件的电压之间的电位差产生电场，将附着在充电构件上的调色剂移动到图像承载构件。

42. 发明授权

US07684732B2 Process unit and image forming apparatus including the same 有权
标题翻译：处理单元和包括该处理单元的图像形成装置
公开(公告)号：US07684732B2
公开(公告)日：2010-03-23
申请号：US11956901
申请日：2007-12-14
申请人： Tetsumaru Fujita , Yoshio Sakagawa , Yuji Nagatomo
发明人： Tetsumaru Fujita , Yoshio Sakagawa , Yuji Nagatomo
IPC分类号： G03G21/00
CPC分类号： G03G15/0233 , G03G2215/025
摘要： An image forming apparatus includes at least a latent image carrier, a latent image forming mechanism, a developing mechanism and a charger. The latent image carrier bears a latent image. The latent image forming mechanism forms the latent image on the latent image carrier. The developing mechanism develops the latent image on the latent image carrier with toner. The charger includes a conductive member supplied with a bias voltage while contacting a surface of the latent image carrier, and charges at least one of the surface of the latent image carrier and a toner adhering to the surface thereof through the conductive member. A tensile strength of the conductive member at break is no less than 10 MPa and no more than 40 MPa, and a contact pressure between the conductive member and the latent image carrier is no less than 4 kN/m2 and no more than 15 kN/m2.
摘要翻译：图像形成装置至少包括潜像载体，潜像形成机构，显影机构和充电器。潜像载体承载潜像。潜像形成机构在潜像载体上形成潜像。显影机构利用调色剂在潜像载体上形成潜像。充电器包括在与潜像载体的表面接触的同时提供偏压的导电构件，并且通过导电构件对潜像载体的表面中的至少一个和附着于其表面的调色剂进行充电。导电部件断裂时的拉伸强度为10MPa以上且40MPa以下，导电部件与潜像载体的接触压力为4kN / m 2以上且15kN / m 2以下， m2。

43. 发明申请

US20090067887A1 IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND DEVELOPING DEVICE 有权
标题翻译：图像形成装置，图像形成方法和开发装置
公开(公告)号：US20090067887A1
公开(公告)日：2009-03-12
申请号：US12204083
申请日：2008-09-04
申请人： Tetsumaru Fujita , Yuji Nagatomo
发明人： Tetsumaru Fujita , Yuji Nagatomo
IPC分类号： G03G15/08
CPC分类号： G03G15/0121 , G03G21/0064 , G03G2215/0132 , G03G2215/0164
摘要： An image forming apparatus includes a plurality of image carriers, a latent image forming unit, and a plurality of developing units. Each of the developing unit forms an image to have a color difference of equal to or less than about five with respect to an initial unicolor image formed by using a toner not containing a reversely-transferred toner of another color when a toner contained in a toner container is consumed by about 70%.
摘要翻译：图像形成装置包括多个图像载体，潜像形成单元和多个显影单元。显影单元中的每一个形成图像，使得当包含在调色剂中的调色剂时，使用不含反向转印的另一种颜色的调色剂的调色剂形成的初始单色图像，具有等于或小于约5的色差容器消耗大约70％。

44. 发明申请

US20090028606A1 PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS INCLUDING SAME 有权
标题翻译：过程盒和图像形成装置，包括它们
公开(公告)号：US20090028606A1
公开(公告)日：2009-01-29
申请号：US12178108
申请日：2008-07-23
申请人： Tetsumaru Fujita , Yuji Nagatomo
发明人： Tetsumaru Fujita , Yuji Nagatomo
IPC分类号： G03G15/02
CPC分类号： G03G21/0035 , G03G21/1814
摘要： A process cartridge includes a latent image carrier, a charging unit, a latent image forming unit, a developing unit, a transfer unit, a rotary brush contacting a curved surface of the latent image carrier to form a nip, and a brush housing including a first tip and a second tip, covering the rotary brush such that a place where the rotary brush contacts the latent image carrier is opened. A downstream end of the nip where the rotary brush contacts the latent image carrier in the rotation direction of the rotary brush is not higher than a center of curvature of the latent image carrier where the rotary brush contacts, and the first tip of the brush housing is downstream of the rotary brush, further toward the latent image carrier than a tangent to the surface of the latent image carrier at the downstream end of the nip.
摘要翻译：处理盒包括潜像载体，充电单元，潜像形成单元，显影单元，转印单元，与潜像载体的弯曲表面接触以形成辊隙的旋转刷，以及包括第一尖端和第二尖端，覆盖旋转刷，使得旋转刷接触潜像载体的位置打开。旋转刷在旋转刷的旋转方向上与潜像载体接触的辊隙的下游端不高于旋转刷接触的潜像载体的曲率中心，并且刷子壳体的第一末端在旋转刷子的下游，进一步朝向潜像载体，而不是在辊隙的下游端与潜像载体的表面相切。

45. 发明申请

US20080069592A1 CHARGING DEVICE AND IMAGE FORMING APPARATUS USING THE CHARGING DEVICE 有权
标题翻译：充电装置和使用充电装置的图像形成装置
公开(公告)号：US20080069592A1
公开(公告)日：2008-03-20
申请号：US11855687
申请日：2007-09-14
申请人： Tetsumaru Fujita , Yoshio Sakagawa , Yuji Nagatomo
发明人： Tetsumaru Fujita , Yoshio Sakagawa , Yuji Nagatomo
IPC分类号： G03G15/02
CPC分类号： G03G15/0233
摘要： A charging device and an image forming apparatus using the charging device. The charging device includes a charging member to uniformly charge a surface of a latent image bearing member in contact therewith, a charge bias application unit to apply a charge bias to the charging member, a conductive member to contact a surface of the charging member, and a different-valued bias application unit to apply a different-valued bias different from the charge bias to the conductive member. The image forming apparatus includes a latent image bearing member to bear a latent image, a latent image forming unit to form the latent image on the latent image bearing member, a development unit to develop the latent image with toner, and the charging device.
摘要翻译：一种充电装置和使用该充电装置的图像形成装置。充电装置包括：充电部件，用于使与其接触的潜像承载部件的表面均匀充电;充电偏压施加单元，用于向充电部件施加充电偏压;导电部件，用于接触充电部件的表面;以及不同值的偏置施加单元，用于将不同于充电偏压的不同值的偏压施加到导电构件。图像形成装置包括：潜像承载部件，用于承载潜像;潜像形成单元，用于在潜像承载部件上形成潜像;显影单元，用调色剂显影潜象;以及充电装置。

46. 发明申请

US20170176886A1 DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS AND PROCESS UNIT INCORPORATING SAME 审中-公开
公开(公告)号：US20170176886A1
公开(公告)日：2017-06-22
申请号：US15367514
申请日：2016-12-02
申请人： Yuji NAGATOMO , Tetsumaru Fujita , Masato Tsuji , Yutaro Kaku
发明人： Yuji NAGATOMO , Tetsumaru Fujita , Masato Tsuji , Yutaro Kaku
IPC分类号： G03G15/08
CPC分类号： G03G15/0812
摘要： A developing device includes a developer bearer facing a latent image bearer, to rotate and supply developer to the latent image bearer, and a developer regulator to regulate an amount of the developer on a surface of the developer bearer. The developer regulator is in contact with the surface of the developer bearer. In the developing device, a ratio of a ten-point mean roughness of the developer regulator to a volume average particle diameter of the developer is not greater than 3.5%. The ratio is defined as Rzjis/Dv×100, where Rzjis represents the ten-point mean roughness measured in a nip-adjacent portion of a face of the developer regulator opposing the developer bearer, and Dv represents the volume average particle diameter of the developer. The nip-adjacent portion is adjacent to and downstream a downstream end of a regulation nip in a rotation direction of the developer bearer.

47. 发明授权

US08594519B2 Image forming apparatus and toner supply method 失效
标题翻译：图像形成装置和调色剂供应方法
公开(公告)号：US08594519B2
公开(公告)日：2013-11-26
申请号：US13020405
申请日：2011-02-03
申请人： Naoki Nakatake , Atsushi Takehara , Tetsumaru Fujita , Tomohiro Kubota , Kohta Sakaya
发明人： Naoki Nakatake , Atsushi Takehara , Tetsumaru Fujita , Tomohiro Kubota , Kohta Sakaya
IPC分类号： G03G15/08
CPC分类号： G03G15/0877 , G03G15/0856 , G03G15/0862
摘要： A toner supplying method for supplying toner from a toner container to a developing part that causes toner to adhere to a latent image formed on a latent image carrying member and develops the latent image, includes detecting a toner amount in the developing part as being equal to or less than a predetermined toner amount value; forming a fog detecting image in a case where the toner amount in the developing part is equal to or less than the predetermined toner amount value, and detecting fog; and determining based on the detected fog whether to execute a toner ejecting process of ejecting the toner remaining in the developing part toward the latent image carrying member before supplying the toner to the developing part from the toner container.
摘要翻译：一种用于将调色剂从调色剂容器供应到显影部分的调色剂供应方法，所述显影部分使调色剂粘附到潜像承载部件上形成的潜像并显影所述潜像，所述调色剂供应方法包括：检测所述显影部分中的调色剂量等于或小于预定调色剂量值; 在显影部中的调色剂量等于或小于预定调色剂量值的情况下形成雾检测图像，并且检测雾; 以及基于检测到的雾化确定是否在从调色剂容器向显影部分供给调色剂之前，将剩余在显影部分中的调色剂喷射到潜像承载部件上的调色剂喷射处理。

48. 发明申请

US20110064473A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20110064473A1
公开(公告)日：2011-03-17
申请号：US12880452
申请日：2010-09-13
申请人： Tetsumaru Fujita , Atsushi Takehara , Naoki Nakatake
发明人： Tetsumaru Fujita , Atsushi Takehara , Naoki Nakatake
IPC分类号： G03G15/08
CPC分类号： G03G15/0822 , G03G15/0844 , G03G15/0855 , G03G15/0865 , G03G15/0875 , G03G2215/0614 , G03G2215/085
摘要： An image forming apparatus includes an image carrier on which a latent image is formed, a charging device that charges the image carrier, an exposing device that irradiates the image carrier, thereby forming a latent image on the image carrier, a developing device that develops the latent image into a visible image by using a monocomponent developer that is carried and transferred by a developer carrier and that is charged to a predetermined polarity, and a toner supply container that is installed in the developing device for toner supply. Used old toner is conveyed from the developing device to the toner supply container and mixed with unused new toner within the toner supply container and thus a mixed toner is produced, and the mixed toner is supplied to the developing device.
摘要翻译：图像形成装置包括形成有潜像的图像载体，对图像载体进行充电的充电装置，照射图像载体的曝光装置，从而在图像载体上形成潜像;显影装置，通过使用由显影剂载体携带并转移并被充电至预定极性的单组分显影剂将潜像变成可见图像，以及安装在用于调色剂供应的显影装置中的调色剂供应容器。将旧的调色剂从显影装置输送到调色剂供应容器，并与调色剂供应容器内的未使用的新调色剂混合，从而制成混合调色剂，并将混合调色剂供应到显影装置。

49. 发明授权

US07907871B2 Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：US07907871B2
公开(公告)日：2011-03-15
申请号：US11954342
申请日：2007-12-12
申请人： Yoshio Sakagawa , Tetsumaru Fujita , Yuji Nagatomo
发明人： Yoshio Sakagawa , Tetsumaru Fujita , Yuji Nagatomo
IPC分类号： G03G21/00 , G03G15/30 , G03G15/02
CPC分类号： G03G15/0233 , G03G15/1605 , G03G21/0064
摘要： An image forming apparatus that is more capable of preventing the occurrence of image quality deterioration caused by defective charging of a photoreceptor than the conventional one. As a charging device, there is used a member which has: a conductive sheet that causes the surface thereof applied with a predetermined bias to abut against the surface of the photoreceptor after passing through a primary transfer nip obtained by abutment between the photoreceptor and an intermediate transfer belt and before entering a development step performed by a developing device; a conductive brush member that applies a predetermined bias to the surface of the photoreceptor obtained after passing through the position of abutment with the sheet and before entering the development step; and a charging roller that uniformly charges the surface of the photoreceptor after passing through the position of abutment with the brush and before entering the development step. Furthermore, at least during a predetermined first period, a bias having a polarity same as the uniformly charging polarity of the photoreceptor is applied to the conductive sheet and brush member.
摘要翻译：一种图像形成装置，其能够防止由于感光体的充电不良而导致的图像质量劣化的发生。作为充电装置，使用具有导电片的部件，该导电片在通过在感光体和中间体之间的邻接获得的一次转印间隙之后使其施加预定偏压的表面抵靠感光体的表面并且在进行由显影装置执行的显影步骤之前; 导电刷构件，其在经过与所述片材抵接的位置之后并且在进入所述显影步骤之前获得的所述感光体的表面上施加预定的偏压; 以及充电辊，其在通过与刷子抵接的位置之后并且在进入显影步骤之前均匀地对感光体的表面进行充电。此外，至少在预定的第一时段期间，将具有与感光体的均匀充电极性相同的极性的偏压施加到导电片和刷构件。

50. 发明授权

US07822356B2 Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：US07822356B2
公开(公告)日：2010-10-26
申请号：US12020089
申请日：2008-01-25
申请人： Yoshio Sakagawa , Tetsumaru Fujita , Yuji Nagatomo
发明人： Yoshio Sakagawa , Tetsumaru Fujita , Yuji Nagatomo
IPC分类号： G03G15/16
CPC分类号： G03G21/0035
摘要： The present invention provides an image forming apparatus in which the cleaning performance of a cleaning brush is preserved over time while affording a smaller apparatus main body. During a print job, toner recovered from a charging roller to a cleaning brush is transferred from the cleaning brush to a cleaning auxiliary roller, thereby preventing excessive accumulation of toner in the cleaning brush. During non print job times, toner accumulated in the cleaning brush is transferred to the charging roller directly and via the cleaning auxiliary roller, whereby the cleaning brush becomes clean while preserving its cleaning performance. Also, toner transferred to the charging roller is transferred to a photosensitive unit is recovered into a developing device, which does away with the need for a dedicated recovery toner holding portion for recovering residual toner, thereby reducing the size of the apparatus main body.
摘要翻译：本发明提供了一种图像形成装置，其中清洁刷的清洁性能随着时间的推移而被保留，同时提供较小的装置主体。在打印作业期间，从充电辊回收到清洁刷的调色剂从清洁刷转移到清洁辅助辊，从而防止调色剂在清洁刷中的过度积聚。在非打印作业时间期间，积存在清洁刷中的调色剂直接通过清洁辅助辊传送到充电辊，由此清洁刷变得清洁，同时保持其清洁性能。此外，转移到充电辊的调色剂转移到感光单元被回收到显影装置中，这不需要用于回收残留调色剂的专用回收调色剂保持部分，从而减小装置主体的尺寸。

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