公开(公告)号：US20080095550A1

公开(公告)日：2008-04-24

申请号：US11553730

申请日：2006-10-27

申请人： Norihito Naito ,  Takayuki Namiki ,  Satoru Inami

发明人： Norihito Naito ,  Takayuki Namiki ,  Satoru Inami

IPC分类号： G03G15/02 ,  G03G15/16

CPC分类号： G03G15/0266 ,  G03G15/1645 ,  G03G2215/021 ,  G03G2215/1614

摘要： An image forming apparatus forming a preferable image without white dots caused by excessive charging when a halftone image is formed by providing a potential difference between a surface potential of a photosensitive drum immediately before charging by a charging device, and that of the drum after the charging in an image forming area of the drum. At least one of a charging bias and a transfer bias is changed between a first area and a second area. The first area is an area on the drum that passes a transfer portion when a recording medium is not present between the roller and the drum, and on that a latent image is to be formed. The second area is an area on the drum that passes the transfer portion when the medium is present between the roller and the drum, and on that a latent image is to be formed.

摘要翻译： 一种图像形成装置，当通过在充电装置充电之前提供感光鼓的表面电位和充电装置之后的感光鼓的表面电位之间的电位差来形成通过在形成半色调图像时由过度充电引起的白点的优选图像 在滚筒的图像形成区域中。 在第一区域和第二区域之间改变充电偏压和转印偏压中的至少一个。 第一区域是当滚筒和滚筒之间不存在记录介质时通过传送部分的滚筒上的区域，并且将形成潜像。 第二区域是当介质存在于辊和滚筒之间时通过转印部分的滚筒上的区域，并且将形成潜像。

公开(公告)号：US07444092B2

公开(公告)日：2008-10-28

申请号：US11553730

申请日：2006-10-27

申请人： Norihito Naito ,  Takayuki Namiki ,  Satoru Inami

发明人： Norihito Naito ,  Takayuki Namiki ,  Satoru Inami

IPC分类号： G03G15/02

CPC分类号： G03G15/0266 ,  G03G15/1645 ,  G03G2215/021 ,  G03G2215/1614

摘要： An image forming apparatus forming a preferable image without white dots caused by excessive charging when a halftone image is formed by providing a potential difference between a surface potential of a photosensitive drum immediately before charging by a charging device, and that of the drum after the charging in an image forming area of the drum. At least one of a charging bias and a transfer bias is changed between a first area and a second area. The first area is an area on the drum that passes a transfer portion when a recording medium is not present between the roller and the drum, and on that a latent image is to be formed. The second area is an area on the drum that passes the transfer portion when the medium is present between the roller and the drum, and on that a latent image is to be formed.

摘要翻译： 一种图像形成装置，当通过在充电装置充电之前提供感光鼓的表面电位和充电装置之后的感光鼓的表面电位之间的电位差来形成通过在形成半色调图像时由过度充电引起的白点的优选图像 在滚筒的图像形成区域中。 在第一区域和第二区域之间改变充电偏压和转印偏压中的至少一个。 第一区域是当滚筒和滚筒之间不存在记录介质时通过传送部分的滚筒上的区域，并且将形成潜像。 第二区域是当介质存在于辊和滚筒之间时通过转印部分的滚筒上的区域，并且将形成潜像。

公开(公告)号：US20060181726A1

公开(公告)日：2006-08-17

申请号：US10528341

申请日：2004-05-14

申请人： Norihito Naito ,  Yasunao Otomo ,  Hideaki Hasegawa ,  Nobuo Oshima

发明人： Norihito Naito ,  Yasunao Otomo ,  Hideaki Hasegawa ,  Nobuo Oshima

IPC分类号： G06K15/00

CPC分类号： G03G21/1889 ,  G03G15/043 ,  G03G15/50

摘要： An image forming apparatus has a first image formation mode for forming an image on an image bearing member by using developer under a first predetermined image forming condition and a second image formation mode for forming an image on an image bearing member by using developer under a second image forming condition which is different from the first predetermined image forming condition and is set so that an amount of consumption of developer with respect to an identical image in the second image formation mode is smaller than that in the first image formation mode, the apparatus includes storing means for storing information for setting the second image forming condition corresponding to a plurality of levels of an amount of usage of the image bearing member, and control means for changing the second image forming condition in the second image formation mode depending on an amount of usage of the image bearing member and information stored in the storing means.

摘要翻译： 图像形成装置具有第一图像形成模式，用于在第一预定图像形成条件下通过使用显影剂在图像承载部件上形成图像，以及第二图像形成模式，用于在第二图像形成模式下通过使用显影剂在图像承载部件上形成图像 图像形成条件与第一预定图像形成条件不同，并且被设置为使得显影剂相对于第二图像形成模式中的相同图像的消耗量小于第一图像形成模式时的消耗量，该装置包括 存储装置，用于存储用于设置与图像承载部件的使用量的多个级别对应的第二图像形成条件的信息;以及控制装置，用于根据第二图像形成模式的数量改变第二图像形成条件 图像承载部件的使用和存储在存储装置中的信息。

公开(公告)号：US06947678B2

公开(公告)日：2005-09-20

申请号：US10372789

申请日：2003-02-26

申请人： Yasunao Ohtomo ,  Norihito Naito ,  Hideaki Hasegawa

发明人： Yasunao Ohtomo ,  Norihito Naito ,  Hideaki Hasegawa

IPC分类号： G03G15/08 ,  G03G15/10

CPC分类号： G03G15/0856 ,  G03G15/0858 ,  G03G2215/0888 ,  G03G2221/18

摘要： An image forming apparatus has full- and half-speeds as image forming speeds. In the full-speed mode, a detected voltage value conforming to the electrostatic capacity between a developing roller and plate antenna of a process cartridge is converted to the amount of toner remaining in the apparatus. In the half-speed mode, on the other hand, the amount of remaining toner is found using a value obtained by adding a correction value δ to the detected voltage value conforming to the electrostatic capacity between the developing roller and the plate antenna. As a result, the amount of toner can be sensed accurately even if the electrification conditions of an image carrier change.

摘要翻译： 图像形成装置具有作为图像形成速度的全速和半速。 在全速模式中，符合处理盒的显影辊和板状天线之间的静电电容的检测电压值被转换为装置中剩余的调色剂量。 另一方面，在半速模式下，使用通过将校正值Δ与对应于显影辊和平板天线之间的静电电容的检测电压值相加而获得的值来发现剩余调色剂的量。 结果，即使图像载体的通电条件改变，也可以精确地检测调色剂的量。

公开(公告)号：US07639956B2

公开(公告)日：2009-12-29

申请号：US10528238

申请日：2004-05-14

申请人： Norihito Naito ,  Kazumi Yamauchi ,  Yasunao Otomo ,  Hideaki Hasegawa ,  Nobuo Oshima

发明人： Norihito Naito ,  Kazumi Yamauchi ,  Yasunao Otomo ,  Hideaki Hasegawa ,  Nobuo Oshima

IPC分类号： G03G15/00

CPC分类号： G03G21/1889 ,  G03G15/043 ,  G03G15/50

摘要： An image forming apparatus has a first image formation mode for forming an image on an image bearing member by using developer under a first predetermined image forming condition and a second image formation mode for forming an image on an image bearing member by using developer under a second image forming condition which is different from the first predetermined image forming condition and is set so that an amount of consumption of developer with respect to an identical image in the second image formation mode is smaller than that in the first image formation mode, the apparatus includes storing means for storing information on an amount of usage of the image bearing member, and control means for changing the second image forming condition in the second image formation mode depending on the information stored in the storing means.

摘要翻译： 图像形成装置具有第一图像形成模式，用于在第一预定图像形成条件下通过使用显影剂在图像承载部件上形成图像，以及第二图像形成模式，用于在第二图像形成模式下通过使用显影剂在图像承载部件上形成图像 图像形成条件与第一预定图像形成条件不同，并且被设置为使得显影剂相对于第二图像形成模式中的相同图像的消耗量小于第一图像形成模式时的消耗量，该装置包括 用于存储关于图像承载部件的使用量的信息的存储装置，以及用于根据存储在存储装置中的信息在第二图像形成模式中改变第二图像形成条件的控制装置。

公开(公告)号：US07003249B2

公开(公告)日：2006-02-21

申请号：US10701417

申请日：2003-11-06

申请人： Hideaki Hasegawa ,  Kazumi Yamauchi ,  Yoshihiro Ogawa ,  Norihito Naito ,  Yasunao Otomo ,  Nobuo Oshima

发明人： Hideaki Hasegawa ,  Kazumi Yamauchi ,  Yoshihiro Ogawa ,  Norihito Naito ,  Yasunao Otomo ,  Nobuo Oshima

IPC分类号： G03G15/08

CPC分类号： G03G15/0914

摘要： A developing apparatus includes a rotatable, developer carrying body for carrying a one-component developer and a rotatable, agitating member for agitating the one-component developer. The one-component developer is magnetic toner at least containing a bonding resin and magnetic iron oxide. When wettability of the magnetic toner relative to a mixture solution of methanol and water is measured at the transmittance of light having a wavelength of 780 nm, a methanol concentration at the transmittance of 80% is within the range of 45 to 65 volume %, and wherein 0.1≦b/a≦0.2 is established where a (rps) denotes the rotation speed of the developer carrying body, and b (rps) denotes the rotation speed of the agitating member.

摘要翻译： 显影装置包括用于承载单组分显影剂的可旋转的显影剂承载体和用于搅拌单组分显影剂的可旋转搅拌构件。 单组分显影剂是至少含有粘结树脂和磁性氧化铁的磁性调色剂。 当在780nm波长的光的透射率下测量磁性调色剂相对于甲醇和水的混合溶液的润湿性时，透光率为80％的甲醇浓度在45至65体积％的范围内，并且 其中0.1≤b/ a <= 0.2，其中（rps）表示显影剂承载体的转速，b（rps）表示搅拌构件的旋转速度。

公开(公告)号：US06963714B2

公开(公告)日：2005-11-08

申请号：US10702445

申请日：2003-11-07

申请人： Yasunao Otomo ,  Kazumi Yamauchi ,  Norihito Naito ,  Hideaki Hasegawa ,  Nobuo Oshima

发明人： Yasunao Otomo ,  Kazumi Yamauchi ,  Norihito Naito ,  Hideaki Hasegawa ,  Nobuo Oshima

IPC分类号： G03G15/08 ,  G03G15/09

CPC分类号： G03G15/0812 ,  G03G15/09

摘要： A developing blade member for regulating a thickness of a layer of a developer on a peripheral surface of a rotatable developing roller enclosing a magnet roller, wherein a scraper for scraping the developer toward longitudinally inside of the developing roller is provided at a longitudinal end of the developing roller, the developing blade member including an elastic member for regulating the thickness of the layer of the developer on the peripheral surface of the developing roller; a metal plate for supporting the elastic member; a projection projecting toward the developing roller, the projection being provided at each of longitudinal ends of the metal plate, wherein an inside end of the projection, with respect to the longitudinal direction of the developing roller, is disposed inside of an inside end of the scraper and in a non-image-formation region.

摘要翻译： 一种用于调节包围磁性辊的可旋转显影辊的外周表面上的显影剂层的厚度的显影刀片构件，其中用于将显影剂朝向显影辊的纵向内侧刮除的刮刀设置在所述显影辊的纵向端部 显影辊，所述显影刮板构件包括用于调节所述显影辊的外周表面上的显影剂层的厚度的弹性构件; 用于支撑弹性构件的金属板; 突出部朝向显影辊突出，突起设置在金属板的每个纵向端部处，其中突出部的相对于显影辊的纵向方向的内端设置在该内侧的内侧 刮刀和非图像形成区域。

公开(公告)号：US06661980B2

公开(公告)日：2003-12-09

申请号：US10091506

申请日：2002-03-07

申请人： Hideki Matsumoto ,  Takeo Shoji ,  Norihito Naito

发明人： Hideki Matsumoto ,  Takeo Shoji ,  Norihito Naito

IPC分类号： G03G1500

CPC分类号： G03G21/1814 ,  G03G15/0856 ,  G03G15/0863 ,  G03G15/556 ,  G03G21/1889 ,  G03G2221/1823

摘要： A cartridge includes a developing apparatus equipped with a developer containing portion containing a developer, a residual developer amount detecting device for detecting a residual developer amount in the developer containing portion, and a storage device capable of storing the latest residual developer amount information. An image forming apparatus includes a continuous rest time counter configured to count a continuous rest time of the image forming apparatus, and a controller which is configured to prohibit updating of the residual developer amount information to the storage device for a predetermined period after the end of the continuous rest time of the image forming apparatus when the continuous rest time counter indicates a time not shorter than a predetermined time. This structure provides an image forming apparatus and an image forming system in which no deterioration in detection accuracy occurs even if an unstable toner state occurs due to a long printing rest time.

摘要翻译： 墨盒包括装有显影剂容纳部分的显影装置，该显影剂容纳部分包含显影剂，用于检测显影剂容纳部分中的残留显影剂量的残余显影剂量检测装置，以及能够存储最新的残留显影剂量信息的存储装置。 图像形成装置包括：连续静止时间计数器，被配置为对图像形成装置的连续静止时间进行计数;以及控制器，被配置为在存储装置结束之后的预定时间段内禁止向存储装置更新剩余显影剂量信息 当连续静止时间计数器指示不短于预定时间的时间时，图像形成装置的连续静止时间。 这种结构提供了即使由于长的打印休息时间而发生不稳定的调色剂状态，也不会发生检测精度的劣化的图像形成装置和图像形成系统。

公开(公告)号：US08615181B2

公开(公告)日：2013-12-24

申请号：US13595104

申请日：2012-08-27

申请人： Norihito Naito ,  Takayoshi Kihara ,  Masahito Kato ,  Takashi Kase

发明人： Norihito Naito ,  Takayoshi Kihara ,  Masahito Kato ,  Takashi Kase

IPC分类号： G03G15/00 ,  G03G21/00

CPC分类号： G03G15/5008

摘要： An image forming apparatus includes a rotatable drum; a developing device for developing a latent image formed on the drum into a developer image; and a cleaning blade for removing developer remaining on the drum after the developer image is transferred from the drum onto a developer image receiving member. After image formation, a predetermined amount of strain of the cleaning blade is released and the drum is subsequently rotated. The drum is subsequently rotated in a direction identical to a rotation direction of the drum during image formation.

摘要翻译： 图像形成装置包括：可旋转滚筒; 用于将形成在所述滚筒上的潜像显影成显影剂图像的显影装置; 以及清洁刮板，用于在显影剂图像从鼓转印到显影剂图像接收部件上之后，去除残留在滚筒上的显影剂。 在图像形成之后，释放清洁刮板的预定量的应变并随后转动滚筒。 随后在图像形成期间，鼓在与滚筒的旋转方向相同的方向上旋转。

公开(公告)号：US08275279B2

公开(公告)日：2012-09-25

申请号：US12831381

申请日：2010-07-07

申请人： Norihito Naito ,  Takayoshi Kihara ,  Masahito Kato ,  Takashi Kase

发明人： Norihito Naito ,  Takayoshi Kihara ,  Masahito Kato ,  Takashi Kase

IPC分类号： G03G15/00 ,  G03G21/00

CPC分类号： G03G15/5008

摘要： An image forming apparatus includes a rotatable drum; a charging roller for electrically charging the drum; a developing device for developing a latent image formed on the drum into a developer image; a cleaning device for removing a developer remaining on the drum after transfer; and a control device. The cleaning device includes a cleaning blade contacting the drum. The control device is capable of performing an operation for rotating the drum, in a direction identical to the rotational direction of the drum during image formation effected by rotating the drum, after a lapse, without next instruction of image formation, of a predetermined period from a stop of rotation of the drum after completing image formation. The predetermined period is longer with a larger number of sheets subjected to the image formation in an image forming job before the rotation of the image bearing member is stopped.

摘要翻译： 图像形成装置包括：可旋转滚筒; 用于对所述滚筒进行充电的充电辊; 用于将形成在所述滚筒上的潜像显影成显影剂图像的显影装置; 用于去除转印后残留在滚筒上的显影剂的清洁装置; 和控制装置。 清洁装置包括与滚筒接触的清洁刮板。 控制装置能够执行用于使滚筒旋转的操作，其方向与图像形成期间的滚筒的旋转方向相同的方向，在通过旋转滚筒进行图像形成之后，经过一段预定时间段内的下一个图像形成指令 完成图像形成后，滚筒的旋转停止。 在图像承载部件的旋转停止之前，在图像形成作业中经受图像形成的较大数量的片材的预定周期更长。