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11. 发明专利

JP2011007982A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2011007982A
公开(公告)日：2011-01-13
申请号：JP2009150570
申请日：2009-06-25
申请人： Fuji Xerox Co Ltd , 富士ゼロックス株式会社
发明人： SUGANO MAKOTO
IPC分类号： G03G15/00 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus that easily prevents fogging, density increase or the like in image forming operation (including imaging operation) started after pause even if the time from completion of one image forming operation till the start of the next image forming operation becomes long.SOLUTION: The image forming apparatus has: an image forming device including at least a photoreceptor on which an electrostatic latent image is formed, a developing device which forms a developer image by developing the electrostatic latent image on the photoreceptor body with developer supplied by a developer supply member to which developing voltage obtained by superposing an AC component on a DC component is applied, and a transfer device which transfers the developer image onto a recording medium; a time detection means that detects information on the stop time of the developing device; and a control means that controls to perform the image forming operation by the image forming device while application of the AC component of the developing voltage to the developing device is stopped on the basis of information on the stop time detected by the time detection means.
摘要翻译：要解决的问题：提供一种即使从一个图像形成操作完成到下一个开始的时间，也可以在暂停之后开始图像形成操作（包括成像操作）中容易防止起雾，浓度增加等的图像形成装置图像形成操作变长。解决方案：图像形成装置具有：至少包括形成有静电潜像的感光体的图像形成装置，通过在感光体上显影静电潜像而形成显影剂图像的显影装置由显影剂供应构件提供的显影剂，通过在DC分量上叠加AC分量而获得的显影电压的显影剂供应构件;以及将显影剂图像转印到记录介质上的转印装置; 时间检测装置，其检测关于显影装置的停止时间的信息; 以及控制装置，其基于由时间检测装置检测的关于停止时间的信息，停止对显影装置施加显影电压的AC分量，由图像形成装置执行图像形成操作。

12. 发明专利

JP2008233718A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2008233718A
公开(公告)日：2008-10-02
申请号：JP2007075953
申请日：2007-03-23
申请人： Fuji Xerox Co Ltd , 富士ゼロックス株式会社
发明人： KATO MASANORI , IWATA HISAYA , SHISHIKURA SHUNICHIRO , ARATAKE MASAYUKI , SUGANO MAKOTO , KATAYAMA SADAHITO
IPC分类号： G03G15/08
摘要： PROBLEM TO BE SOLVED: To prevent developing operation failure caused by disturbance (e.g., nonuniform distribution of developer or reverse flow of developer to a developer supply path) of stored developer in a low-frequency usage developing unit, when a rotating holder is rotated by a predetermined amount when a rotary type developing device has the low-frequency developing unit. SOLUTION: A development control device 20 includes a rotation amount measuring means 21 that measures the amount of rotation of the rotating holder 4; a development drive amount measuring means 22 that measures the amount of drive involved in the developing operation of each of the developing units 3; and an idle drive control means 24, with which when there is any low frequency use developing unit 3, in which the amount of drive involved in the developing operation measured by the measuring means 22 is not larger than a predetermined amount, within a predetermined period corresponding to the amount of rotation of the rotating holder measured by the rotation amount measuring means 21; the low use frequency developing unit 3 is idly driven for a predetermined time so as to make the developer distribution uniform. By measuring the amount of supply drive of a developer supply mechanism 10 in lieu of the development drive, the developer supply mechanism 10 is also driven idly. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了防止在低频使用显影单元中存储的显影剂的干扰（例如，显影剂的不均匀分布或显影剂供应路径的逆流）引起的显影操作故障，当旋转保持器当旋转型显影装置具有低频显影单元时旋转预定量。解决方案：显影控制装置20包括测量旋转保持器4的旋转量的旋转量测量装置21; 显影驱动量测量装置22，用于测量每个显影单元3的显影操作所涉及的驱动量; 以及空闲驱动控制装置24，当存在由测量装置22测量的显影操作中所涉及的驱动量不大于预定量的任何低频用显影单元3时，在预定时段内对应于由旋转量测量装置21测量的旋转保持器的旋转量; 低使用频率显影单元3被空载驱动预定时间，以使显影剂分布均匀。通过测量显影剂供应机构10的供应驱动量代替显影驱动器，显影剂供给机构10也被空转。版权所有（C）2009，JPO＆INPIT

13. 发明专利

JP2007086312A Developing device and image forming apparatus 审中-公开
标题翻译：开发设备和图像形成装置
公开(公告)号：JP2007086312A
公开(公告)日：2007-04-05
申请号：JP2005274025
申请日：2005-09-21
申请人： Fuji Xerox Co Ltd , 富士ゼロックス株式会社
发明人： KATAYAMA SADAHITO , UNAGIDA YASUNORI , CHIHARA TOMOYOSHI , OKAMOTO TETSUJI , IWATA HISAYA , SUGANO MAKOTO
IPC分类号： G03G15/08 , G03G15/09
摘要： PROBLEM TO BE SOLVED: To reduce variations in the amount of developer and prevent scattering of the developer when restricting the amount of developer on a developing roll by a developer restricting member. SOLUTION: Two-component developer G attracted to the surface of the developing roll 62 is restricted by the developer restricting member 70. The developer restricting member 70 is provided with a magnetic member 72 disposed upstream of a nonmagnetic member 71 in the direction of rotation. The magnetic member 72 projects beyond the nonmagnetic member 71 toward the developing roll 62 such that a gap between the magnetic member 72 and developing roll 62 is narrower than a gap between the non-magnetic member 71 and developing roll 62. The gap between the magnetic member 72 and developing roll 62 can be easily defined, and the members can be accurately mounted so that the gaps can be constant. The amount of developer on the developing roll 62 depends on the gap between the magnetic member 72 and the developing roll 62. Accordingly, variations in the amount of developer can be restrained. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：通过显影剂限制构件限制显影辊上的显影剂的量时，减少显影剂量的变化并防止显影剂的飞散。吸附到显影辊62表面的双组分显影剂G被显影剂限制构件70限制。显影剂限制构件70设置有磁性构件72，磁性构件72沿着非磁性构件71的上游方向的旋转。磁性构件72突出超过非磁性构件71朝向显影辊62，使得磁性构件72和显影辊62之间的间隙比非磁性构件71和显影辊62之间的间隙窄。磁性构件72之间的间隙构件72和显影辊62可以容易地限定，并且可以精确地安装构件，使得间隙可以是恒定的。显影辊62上的显影剂的量取决于磁性构件72和显影辊62之间的间隙。因此，可以抑制显影剂量的变化。版权所有（C）2007，JPO＆INPIT

14. 发明专利

JPH11272051A Developing device 失效
标题翻译：开发设备
公开(公告)号：JPH11272051A
公开(公告)日：1999-10-08
申请号：JP7585298
申请日：1998-03-24
申请人： Fuji Xerox Co Ltd , 富士ゼロックス株式会社
发明人： SUGANO MAKOTO , INABA SHIGERU
IPC分类号： G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a developing device capable of obtaining stable image quality by uniformizing the electric charge quantity of a developer on a developer carrier over a long time.
SOLUTION: The top end of an elastic member 28 is set in such a length that the top end slides on the inwall of a housing 14 and the length of the elastic member 28 is set so that the distance between the top end part of the elastic member 28 and the surface of the developer carrier 17 is ≤5 mm. Thus, the elastic member 28 scraps the developer 12 housed in the housing 14, to reduce the remainder and is elastically deformed when the elastic member 28 slides on the inwall of the housing 14 and elastically restored in a flocculated developer region 30, so that when the elastic member 28 passes through the flocculated developer region 30, the flocculated developer 12 can be dispersed in the direction of the arrow by the rotational force of a stirring member 24, the restoring force of the elastic member 28 as well and the pressure (in the direction of the arrow F) of the developer 12 carried by the restoring force.
COPYRIGHT: (C)1999,JPO
摘要翻译：要解决的问题：提供能够通过长时间使显影剂载体上的显影剂的电荷量均匀化来获得稳定图像质量的显影装置。解决方案：弹性构件28的顶端被设置成使得顶端在壳体14的内壁上滑动的长度，并且弹性构件28的长度被设定为使得弹性构件28的顶端部分之间的距离构件28和显影剂载体17的表面<= 5mm。因此，弹性构件28将容纳在壳体14中的显影剂12废弃以减少剩余部分并且当弹性构件28在壳体14的内壁上滑动并弹性地恢复在絮凝的显影剂区域30中时弹性变形，弹性构件28通过絮凝显影剂区域30，絮凝的显影剂12可以通过搅拌构件24的旋转力沿箭头方向分散，弹性构件28的恢复力以及压力（在由恢复力携带的显影剂12的箭头F的方向）。

15. 发明专利

JP2013145346A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2013145346A
公开(公告)日：2013-07-25
申请号：JP2012006517
申请日：2012-01-16
申请人： Fuji Xerox Co Ltd , 富士ゼロックス株式会社
发明人： SUGANO MAKOTO , SAKOTA YUJI , HORII KIYOTO , ISHII YASUTOMO
IPC分类号： G03G15/08 , G03G15/00
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of suppressing a metallic matter from adhering to a developing roll by means of the magnetic force of the developing roll after suppressing an increase in size of an apparatus body.SOLUTION: A developing unit 72 (developing roll 74) is moved from a proximate position to a separate position so that a magnetic flux density generated on the surface of a circular arc part 100A by a magnetic member 74B is 17 [mT] or less. That is, the magnetic flux density generated on the surface of the circular arc part 100A is decreased by the magnetic member 74B by moving the developing unit 72 from the proximate position to the separate position. Therefore, a metallic foreign matter can be prevented from adhering to the developing roll 74 by means of the magnetic force of the developing roll 74 after suppressing an increase in size of an apparatus body, compared with the case where a catch pan 100 is moved to the outside to decrease the magnetic flux density.
摘要翻译：要解决的问题：提供一种图像形成装置，其能够在抑制装置主体的尺寸增大之后借助于显影辊的磁力而抑制金属物质附着到显影辊。解决方案：显影单元72 （显影辊74）从接近位置移动到分离位置，使得由磁性部件74B在圆弧部分100A的表面上产生的磁通密度为17 [mT]以下。也就是说，通过将显影单元72从接近位置移动到分离位置，通过磁性构件74B减小在圆弧部分100A的表面上产生的磁通密度。因此，与将捕获盘100移动到的情况相比，可以防止金属杂质在抑制装置主体的尺寸增大之后借助于显影辊74的磁力粘附到显影辊74 外界降低磁通密度。

16. 发明专利

JP2001255791A IMAGE FORMING DEVICE 失效
公开(公告)号：JP2001255791A
公开(公告)日：2001-09-21
申请号：JP2000069163
申请日：2000-03-13
申请人： FUJI XEROX CO LTD
发明人： MIYATA HIDEAKI , MIYAMOTO HIROYUKI , SUGANO MAKOTO , SEKO TAKEHIRO , TSUCHIYA TAKASHI
IPC分类号： G03G21/00 , G03G15/08 , G03G21/18
摘要： PROBLEM TO BE SOLVED: To prevent the exchange of a developer cartridge just before the service life of the process cartridge is exhausted. SOLUTION: The image forming device is provided with an output means C5 to output the expected use frequency 0.9×RDn/n of a process cartridge U2 until the developer of one new developer cartridge is consumed when a developer cartridge K is exchanged, and a means C8 for preventing the exchange of the developer cartridge K, when the remaining usable frequency RDa-RDn of the process cartridge U2 settled by the difference between the stored value RDa of a storage means CM 1 of the initial usable frequency of the process cartridge and the use frequency RDn detected by the detecting means C4 of the use frequency of the process cartridge is smaller than the expected use frequency 0.9×RDn/n.

17. 发明专利

JP2001242692A DEVELOPER CARTRIDGE AND PROCESS CARTRIDGE 失效
公开(公告)号：JP2001242692A
公开(公告)日：2001-09-07
申请号：JP2000054072
申请日：2000-02-29
申请人： FUJI XEROX CO LTD
发明人： MIYAMOTO HIROYUKI , IRITONO EIJI , SEKO TAKEHIRO , SUGANO MAKOTO , MIYATA HIDEAKI
IPC分类号： G03G21/00 , G03G15/08 , G03G21/18
摘要： PROBLEM TO BE SOLVED: To prevent developer from falling from a gap between a developer container and a developer cartridge. SOLUTION: This developer cartridge is provided with an external cylinder K1 on the cylindrical outside surface of which an outside developer replenishing port K1b is formed, an internal cylinder K2 inside which the developer is stored, on the cylindrical outside surface of which an inside developer replenishing port K2a is formed and which is attached rotatably inside the cylinder K1 between a communicating position where the port K2a communicates with the port K1b and a shutoff position where it is separated from the port K1b, and a replenishing port lower end covering sheet Sa fixed on the outside surface of the lower edge of the cylinder K2, arranged between the cylinders K2 and K1 when the cylinder K2 exists at the shutoff position and projecting to cover the lower edge of the port K1b when it exists at the communicating position.

18. 发明专利

JPH08123192A DEVELOPING DEVICE 失效
公开(公告)号：JPH08123192A
公开(公告)日：1996-05-17
申请号：JP25397394
申请日：1994-10-19
申请人： FUJI XEROX CO LTD
发明人： INABA SHIGERU , SUGANO MAKOTO , ASAHINA NOBORU
IPC分类号： G03G15/08
摘要： PURPOSE: To uniformly maintain the toner sticking amount to an electrostatic latent image and to obtain the stable image quality, by non-fixedly holding the developer amount control member in between the press contact point held in press contact with the sleeve and the butting point for butting to the hopper side. CONSTITUTION: The leaf spring member 7a is fitted with its one end into the slit 16 of the holding part 15, and the position and the direction of the holding part 15 and slit 16 is respectively specified, so that the developer amount control member 7 is bent in a state of holding the elastic member 7b in contact with the sleeve 6. Then, the control member 7, non-fixedly held between the sleeve 6 and the hopper 3 in a state that the base end part of the control member 7 comes in contact with the hopper 3 side and the tip end part comes in press contact with the sleeve 6, is caused to bend at a specified angle, therefore the specified butting pressure fixed by the spring constant of the control member 7, the bending angle or the like is imparted in between the tip end part of the control member 7 and the sleeve 6. Therefore, the developer of the specified thickness is formed on the sleeve 6, and the generation of waviness in the longitudinal direction of the control member 7 is prevented, even if the control member 7 and hopper 3 is severally provided with different coefficient of thermal expansion.

19. 发明专利

JPH0511582A ELECTROPHOTOGRAPHIC COPYING MACHINE 失效
公开(公告)号：JPH0511582A
公开(公告)日：1993-01-22
申请号：JP3524791
申请日：1991-02-05
申请人： FUJI XEROX CO LTD
发明人： MIYATA HIDEAKI , SUNAGA TAKAYUKI , ISHIKAWA TORU , SHIINA YOSHIO , IKISU TOORU , SUGANO MAKOTO
IPC分类号： G03G15/08 , G03G15/06 , G03G15/09
摘要： PURPOSE:To provide an electrophotographic copying machine which can obtain a copy having an excellent image without having bias leakage by devising a gap between an electrostatic latent image holder and a developing carrier and a developing bias voltage. CONSTITUTION:The volume resistance of a developer carrier 5 is 1X10 -2X10 OMEGA, and its surface roughness Rz is 8.0 (+2.5 to -1.5). Then, a distance between developer carrier 5 and the electrostatic latent image holder 7 is 200-300mum, and the developing bias voltage applied therebetween, is set 2.0kv (2.4kHz, a saw-tooth-wave, duty ratio is 1:5).

20. 发明专利

JPH03269469A DEVELOPING DEVICE 失效
公开(公告)号：JPH03269469A
公开(公告)日：1991-12-02
申请号：JP6924390
申请日：1990-03-19
申请人： FUJI XEROX CO LTD
发明人： SUGANO MAKOTO , SHIINA YOSHIO , KATO AKIHIKO , IKISU TOORU
IPC分类号： G03G15/08 , G03G15/09
摘要： PURPOSE:To obtain an excellent recording image without having the reduction in a density by providing a partition plate along the shaft direction of a developer carrier within the magnetic force of the developer carrier, between the developer carrier and a developer carrying/supplying means. CONSTITUTION:The partition plate 5 is erected between the developing roll 2 (developing carrier) and the toner carrying/supplying means 3. Consequently, the flowing of the developer between the developing roll 2 and the toner carrying/supplying means 3 is regulated, toner is spread inside a developing device by a carrying/supplying means 3 without receiving an excess charge, and its electrifying quantity is almost uniformized. The erecting position and height of the partition plate 5 are decided with the relation of the developing roll 2 and the magnetic force. At this constitution, the supplying of the toner to the side of the developing roll 2 from the toner carrying/supplying means 3 is smooth. Therefore, the excellent recorded image without having the reduction in the density is obtained.

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