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公开(公告)号：US10209646B1
公开(公告)日：2019-02-19
申请号：US16032220
申请日：2018-07-11
Applicant: KONICA MINOLTA, INC.
Inventor： Kazuyoshi Ota , Hiroaki Umemoto , Futoshi Okazaki , Hidetoshi Noguchi , Masanori Kawada
Abstract: An image forming apparatus includes: an image carrier that rotates while carrying a toner image; an image former that forms the toner image; a transfer roller that transfers the toner image to a recording medium; and a bias voltage applier that applies a voltage to the transfer roller, wherein the image former forms transfer images and forms a patch image with toner between a first transfer image and a second transfer image, and the bias voltage applier applies a first voltage having a polarity opposite to a charge polarity of the toner to the transfer roller, applies a second voltage having the polarity opposite to the charge polarity of the toner and larger than the first voltage to the transfer roller, and applies a third voltage having the polarity opposite to the charge polarity of the toner and smaller than the second voltage to the transfer roller.
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公开(公告)号：US09989882B2
公开(公告)日：2018-06-05
申请号：US15427385
申请日：2017-02-08
Applicant: KONICA MINOLTA, INC.
Inventor： Toshiaki Shima , Masanori Kawada , Yohei Ito , Shinya Tokutake , Hiroaki Umemoto
CPC classification number: G03G15/0812 , G03G15/0921 , G03G15/0928
Abstract: A development device includes: a developer carrier including a magnet roller and a sleeve around the magnet roller; and a restriction member provided opposed to the sleeve surface. When a region on the surface opposed to the restriction member is defined as a first region and regions adjacent to the first region are defined as second and third regions, a magnetic flux density is largest in the second region. When a position where the density is largest in the second region is defined as a reference position, a position where the density is a predetermined value in the second region is defined as a downstream position, and a position where the density is the predetermined value in the third region is defined as an upstream position, the width between the reference position and the upstream position is longer than the width between the reference position and the downstream position.
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公开(公告)号：US10234812B2
公开(公告)日：2019-03-19
申请号：US15730304
申请日：2017-10-11
Applicant: Konica Minolta, Inc.
Inventor： Toshiaki Shima , Yohei Ito , Kazuyoshi Ota , Hiroaki Umemoto
Abstract: A transport member, that transports a developer by rotating in a rotation direction that is predetermined around a rotation axis, includes: a shaft part including the rotation axis; and a blade part spirally provided on an outer peripheral surface of the shaft part, wherein the blade part includes a transport surface that is a surface facing a downstream side in a transport direction of the developer along the rotation axis, and a non-transport surface that is a surface other than the transport surface, and the transport member further includes a fin protruding from the non-transport surface of the blade part, the fin being provided with an interval from the outer peripheral surface of the shaft part.
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公开(公告)号：US10185270B2
公开(公告)日：2019-01-22
申请号：US15704950
申请日：2017-09-14
Applicant: KONICA MINOLTA, INC.
Inventor： Masanori Kawada , Hiroaki Umemoto , Yohei Ito , Toshiaki Shima , Kazuyoshi Ota , Shinya Tokutake , Hidetoshi Noguchi , Shinichi Yoshimoto , Futoshi Okazaki
Abstract: An image forming apparatus includes an image former which forms an image on an image carrying member with toner stored in a storage, a toner supplier which supplies toner to the storage by driving a conveyance member, a density measurer which causes the image former to form an image having a predetermined density at a predetermined timing and measures density of the formed image, a corrector which corrects a driving amount of the conveyance member based on the density measured by the density measurer, and a changer which changes a timing when the density measurer measures the density in response to an event that a predetermined condition is satisfied.
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公开(公告)号：US09272863B2
公开(公告)日：2016-03-01
申请号：US14216997
申请日：2014-03-17
Applicant: KONICA MINOLTA, INC.
Inventor： Atsuhiko Shimoyama , Noboru Oomoto , Hiroaki Umemoto , Hiroshi Mizuno , Ryo Oshima
CPC classification number: B65H3/48 , B65H3/128 , B65H3/64 , B65H7/02 , B65H7/14 , B65H2404/264 , B65H2405/15 , B65H2405/312 , B65H2405/332 , B65H2511/22 , B65H2515/212 , B65H2553/414 , B65H2553/42 , B65H2553/46 , B65H2553/82 , B65H2701/1311 , B65H2801/06 , B65H2220/01 , B65H2220/03 , B65H2220/02
Abstract: A sheet feeding device having; a mounting portion capable of accommodating a stack of sheets; a blowing device that blows air onto the stack placed in the mounting portion, thereby floating at least a top sheet from the stack; a suction/transportation mechanism that includes a suction belt provided above the mounting portion and attracting the top sheet floated by the blowing device to transport the attracted sheet toward a transportation path; an image pickup device disposed so as to capture an image of the floated top sheet and the next sheet therebelow; and an illuminating device that emits light toward an area to be captured by the image pickup device. The light emitted by the illuminating device illuminates a plane in a direction approximately normal thereto, the plane including the closest end surface of the stack of sheets to the image pickup device.
Abstract translation: 一种送纸装置，具有： 能够容纳一叠纸张的安装部; 吹送装置，其将空气吹送到放置在安装部分中的堆叠上，从而从堆叠浮起至少一个顶片; 吸入/输送机构，其包括设置在所述安装部分上方的吸引带并且吸引由所述吹塑装置漂浮的所述顶片，以将吸引的片材输送到输送路径; 被配置为捕获漂浮的顶片和下一片的图像的图像拾取装置; 以及照明装置，其朝向要由图像拾取装置捕获的区域发光。 由照明装置发射的光沿大致垂直于其的方向照射平面，该平面包括纸张堆叠的最接近的端面到图像拾取装置。
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Patent Agency Ranking
公开(公告)号：US09199810B2
公开(公告)日：2015-12-01
申请号：US14337916
申请日：2014-07-22
Applicant: KONICA MINOLTA, INC.
Inventor： Atsuhiko Shimoyama , Noboru Oomoto , Hiroaki Umemoto , Hiroshi Mizuno , Ryo Oshima
CPC classification number: B65H3/08 , B65H3/128 , B65H3/48 , B65H7/16 , B65H2511/20 , B65H2511/22 , B65H2515/11 , B65H2553/42 , B65H2220/03 , B65H2220/02 , B65H2220/01
Abstract: A sheet supply apparatus includes: a tray on which a stack of sheets can be placed, an air blowing section that blows air towards the stack of sheets to float at least a topmost sheet, a sucking and conveying section, above the tray, that sucks said floating sheet(s) and conveys said sheet(s) in a prescribed direction, and a first light source that emits a first stripshaped slit light having a vertically extending component such that the slit light crosses at least a first edge of a first floating sheet and a second edge of a second floating sheet. An image capture section captures an image of the first slit light, a calculating section calculates a vertical clearance between the first and second sheets, and an air amount adjusting section adjusts an amount of air to be blown by the air blowing section based on the calculated vertical clearance.
Abstract translation: 供纸装置包括：托盘，可以放置一叠纸张;空气吹送部，其朝向所述纸张堆叠吹送至少最上面的纸张的空气，在所述纸盘上方吸入和传送部分， 所述浮动片材沿预定方向输送所述片材;以及第一光源，其发射具有垂直延伸部件的第一条形狭缝光，使得所述狭缝光至少穿过第一浮动片的第一边缘 片材和第二浮动片材的第二边缘。 图像捕获部分捕获第一狭缝光的图像，计算部分计算第一和第二纸张之间的垂直间隙，空气量调节部分根据计算出的空气调节部分调节吹气部分吹入的空气量 垂直间隙。
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公开(公告)号：US09031467B2
公开(公告)日：2015-05-12
申请号：US13779302
申请日：2013-02-27
Applicant: Konica Minolta, Inc.
Inventor： Hiroaki Umemoto
CPC classification number: G03G15/0291 , G03G15/0189 , G03G2215/0132 , H01J37/30
Abstract: A discharge device for generating a corona discharge aimed at an object facing the discharge device, the discharge device comprising: a plate-like main discharge electrode configured to receive an applied direct current voltage and generate the corona discharge aimed at the object; a plate-like auxiliary discharge electrode disposed in parallel with the main discharge electrode and configured to receive an applied direct current voltage which is opposite in polarity to the applied direct current voltage received by the main discharge electrode, thereby causing the corona discharge to occur between the main discharge electrode and the auxiliary discharge electrode; and a plate-like insulating member disposed between the main discharge electrode and the auxiliary discharge electrode, wherein the insulating member is disposed in such a manner that a discharge current from the main discharge electrode flows to both the object and the auxiliary discharge electrode.
Abstract translation: 一种用于产生针对面向放电装置的物体的电晕放电的放电装置，所述放电装置包括：板状主放电电极，被配置为接收所施加的直流电压并产生针对所述物体的电晕放电; 与主放电电极并联设置的板状辅助放电电极，其被配置为接收与由主放电电极接收的所施加的直流电压极性相反的施加的直流电压，从而导致电晕放电发生在 主放电电极和辅助放电电极; 以及设置在主放电电极和辅助放电电极之间的板状绝缘构件，其中绝缘构件设置成使得来自主放电电极的放电电流流到物体和辅助放电电极。
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公开(公告)号：US10591848B2
公开(公告)日：2020-03-17
申请号：US16183166
申请日：2018-11-07
Applicant: Konica Minolta, Inc.
Inventor： Toshiaki Shima , Shinya Tokutake , Hidetoshi Noguchi , Hiroaki Umemoto
IPC: G03G15/09
Abstract: A magnet roller includes a magnet portion for generating magnetic force such that a plurality of peaks are formed in a magnetic force distribution. The magnet portion includes a plurality of magnetic poles. A cross section of the magnet portion includes a portion in which a distance from an axial center of the magnet portion to an outer edge of the magnet portion continuously changes in the circumferential direction. The magnetic force on a surface of a developing sleeve at a position corresponding to each of the plurality of magnetic poles is determined by (i) a distance from each of the plurality of magnetic poles to the developing sleeve in a radial direction of the developing sleeve and (ii) a magnitude of magnetic force in each of the plurality of magnetic poles. The distances from the plurality of magnetic poles to the developing sleeve in the radial direction are different.
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公开(公告)号：US09335736B2
公开(公告)日：2016-05-10
申请号：US14789172
申请日：2015-07-01
Applicant: Konica Minolta, Inc.
Inventor： Hiroaki Umemoto , Shigeru Tashiro , Masayuki Satou , Masahiro Yamaguchi , Shoichi Yoshikawa
IPC: G03G21/20
CPC classification number: G03G21/206 , G03G2221/1645
Abstract: An image forming apparatus having: an inside-air duct having a first inlet to an inside of the image forming apparatus; a first ventilator provided in the inside-air duct; an outside-air duct having a second inlet to an outside of the image forming apparatus; a common duct into which the inside-air duct and the outside-air duct are merged; a second ventilator provided in at least one of the outside-air duct and the common duct; a filter provided in the common duct; and a control section that retrieves information indicative of an flow rate in the inside-air duct and increases a pressure produced by the second ventilator based on the retrieved information such that an flow rate in the outside-air duct is substantially constant with respect to an increase of the flow rate in the inside-air duct.
Abstract translation: 一种图像形成装置，具有：具有朝向图像形成装置的内部的第一入口的内部空气管道; 设置在内部空气管道中的第一呼吸机; 外部空气管道，其具有到图像形成装置的外部的第二入口; 内部空气管道和外部空气管道合并到其中的公共管道; 设置在所述外风管道和所述公共管道中的至少一个中的第二通风机; 设置在公共管道中的过滤器; 以及控制部分，其检索指示内部空气管道中的流量的信息，并且基于所检索的信息增加由第二呼吸机产生的压力，使得外部空气管道中的流量相对于 增加内部空气管道中的流量。
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公开(公告)号：US09096399B2
公开(公告)日：2015-08-04
申请号：US14144782
申请日：2013-12-31
Applicant: KONICA MINOLTA, INC.
Inventor： Hiroaki Umemoto , Noboru Oomoto , Atsuhiko Shimoyama , Hiroshi Mizuno , Ryo Oshima
CPC classification number: B65H3/128 , B65H3/48 , B65H7/02 , B65H2404/264 , B65H2405/15 , B65H2405/312 , B65H2405/332 , B65H2406/362 , B65H2406/3662 , B65H2511/22 , B65H2515/212 , B65H2553/42 , B65H2701/1311 , B65H2801/06 , B65H2220/01 , B65H2220/02 , B65H2220/03
Abstract: A sheet feeding device having: a blowing device configured to blow air toward the stack of sheets placed in a predetermined stacking direction, thereby floating at least a top sheet from the stack; a suction/transportation mechanism that includes a suction belt provided above the mounting portion and configured to attract the top sheet floated by the blowing device to transport the attracted sheet in a predetermined transportation direction; and an image pickup device configured to capture images of the top sheet and the next sheet therebelow, and disposed so as to see through an area where a side of the top sheet and the suction belt, when viewed in a plan view in the stacking direction, are close to each other during the floating of the top sheet, to such an extent that the side of the top sheet essentially does not hang downward.
Abstract translation: 一种送纸装置，具有：送风装置，被配置为朝向堆叠的纸张堆放方向吹送空气，从而使堆叠中的至少顶片浮起; 吸入/输送机构，其包括设置在所述安装部分上方并被构造成吸引由所述吹塑装置浮动的所述顶片的吸引带，以沿预定的输送方向输送所述被吸引的片材; 以及图像拾取装置，被配置为捕获顶片和下一个片材的图像，并且被设置为在沿着堆叠方向的俯视图中观察顶片和吸引带的侧面的区域 在顶片的浮动期间彼此靠近，使得顶片的侧面基本上不会向下悬挂的程度。
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