公开(公告)号：US10281848B2

公开(公告)日：2019-05-07

申请号：US15427735

申请日：2017-02-08

申请人： Yuuji Wada ,  Naoto Kochi ,  Hiroki Nakamatsu ,  Kazuki Yogosawa ,  Takahiro Suzuki ,  Shinya Tanaka ,  Kenji Sugiura ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Hirokazu Ishii ,  Takehide Mizutani ,  Atsushi Nagata ,  Keigo Nakamura

发明人： Yuuji Wada ,  Naoto Kochi ,  Hiroki Nakamatsu ,  Kazuki Yogosawa ,  Takahiro Suzuki ,  Shinya Tanaka ,  Kenji Sugiura ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Hirokazu Ishii ,  Takehide Mizutani ,  Atsushi Nagata ,  Keigo Nakamura

IPC分类号： G03G15/16 ,  G03G15/00

摘要： An improved image forming apparatus includes an image bearer, a nip forming member, a transfer power source, and a controller. The controller switches a transfer mode between a first mode to transfer the toner image onto a first type sheet having a surface smoothness higher than a surface smoothness of a second type sheet and a second mode to transfer the toner image onto the second type sheet. The controller controls the transfer power source to output the transfer bias having an opposite-peak duty of greater than or equal to 50% that is a duty on the side of the opposite-peak value in the first mode. The controller controls the transfer power source to output the transfer bias having an opposite-peak duty of less than 50%, which is different from the opposite-peak duty of the first mode, in the second mode.

公开(公告)号：US10063742B2

公开(公告)日：2018-08-28

申请号：US14564493

申请日：2014-12-09

申请人： Shinya Tanaka

发明人： Shinya Tanaka

IPC分类号： G03G15/043 ,  G06K15/02 ,  H04N1/409

CPC分类号： H04N1/4092

摘要： An integrated circuit includes a pixel identifying unit that extracts a target partial image formed of a pixel of interest and adjacent pixels from input image data, determines a character of the pixel of interest based on the pixel of interest and the adjacent pixels, and generates identification information indicating a result of determination on the character; and a density converting unit that converts a density of a pixel of the image data based on a contour extraction function or an edge density reducing function on the image data by using the identification information.

公开(公告)号：US20170299994A1

公开(公告)日：2017-10-19

申请号：US15483221

申请日：2017-04-10

申请人： Atsushi NAGATA ,  Shinya Tanaka ,  Hirokazu Ishii ,  Kenji Sugiura ,  Takehide Mizutani ,  Keigo Nakamura ,  Yuuji Wada ,  Naoto Kochi

发明人： Atsushi NAGATA ,  Shinya Tanaka ,  Hirokazu Ishii ,  Kenji Sugiura ,  Takehide Mizutani ,  Keigo Nakamura ,  Yuuji Wada ,  Naoto Kochi

IPC分类号： G03G15/00 ,  H04N1/032 ,  G03G15/04 ,  G06K15/12 ,  G03G15/043

CPC分类号： G03G15/5037 ,  G03G15/04 ,  G03G15/043 ,  G06K15/12 ,  H04N1/032

摘要： An image forming apparatus includes an image bearer, an image forming device to form a toner image on the image bearer with toner, a power source to output a bias to transfer the toner image onto a recording medium, and control circuitry. The circuitry controls the power source to decrease a peak-to-peak voltage of the bias in response to increase in at least one of temperature and humidity, when a time-averaged voltage of the bias is on a transfer side of transferring the toner to the recording medium, from a median value of maximum and minimum voltages of the bias. The circuitry controls the power source to increase the peak-to-peak voltage of the bias in response to increase in at least one of temperature and humidity, when the time-averaged voltage of the bias is on a return side of returning the toner to the image bearer, from the median value.

公开(公告)号：US09488937B2

公开(公告)日：2016-11-08

申请号：US13739482

申请日：2013-01-11

申请人： Shinya Tanaka ,  Hirokazu Ishii ,  Hiromi Ogiyama ,  Yasunobu Shimizu ,  Keigo Nakamura

发明人： Shinya Tanaka ,  Hirokazu Ishii ,  Hiromi Ogiyama ,  Yasunobu Shimizu ,  Keigo Nakamura

IPC分类号： G03G15/16 ,  G03G15/01 ,  G03G21/00

CPC分类号： G03G15/1695 ,  G03G15/0189 ,  G03G15/161 ,  G03G15/168 ,  G03G21/0094

摘要： An image forming apparatus includes an image carrier that carries an electrostatic latent image; a developing unit that develops the electrostatic latent image using a toner; an intermediate transfer body onto which toner image is transferred; a secondary transfer member that comes in contact with a surface of the intermediate transfer body; a power supply that outputs a voltage for transferring the toner image on the intermediate transfer body onto a recording member; and a protective agent supply unit that applies a protective agent including zinc stearate and boron nitride onto a surface of the image carrier. The voltage is alternatively switched in a transfer direction and an opposite direction. The voltage in the transfer direction enables transfer of the toner image from the intermediate transfer body to the recording member, and the voltage in the opposite direction has polarity opposite to polarity of the voltage in the transfer direction.

摘要翻译： 图像形成装置包括承载静电潜像的图像载体; 显影单元，其使用调色剂显影静电潜像; 传送调色剂图像的中间转印体; 与中间转印体的表面接触的二次转印部件; 输出用于将中间转印体上的调色剂图像转印到记录部件上的电压的电源; 以及保护剂供给单元，其将包含硬脂酸锌和氮化硼的保护剂施加到图像载体的表面上。 电压交替地沿传送方向和相反方向切换。 传送方向上的电压使得能够将调色剂图像从中间转印体传送到记录部件，并且相反方向的电压具有与传送方向上的电压极性相反的极性。

公开(公告)号：US09459564B2

公开(公告)日：2016-10-04

申请号：US14881611

申请日：2015-10-13

申请人： Tatsuya Ohsugi ,  Kenji Sugiura ,  Jyunya Sakuraba ,  Hirokazu Ishii ,  Toshitaka Yamaguchi ,  Hiroyoshi Haga ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Yuuji Wada ,  Kazuki Yogosawa ,  Shinya Tanaka ,  Masayoshi Nakayama

发明人： Tatsuya Ohsugi ,  Kenji Sugiura ,  Jyunya Sakuraba ,  Hirokazu Ishii ,  Toshitaka Yamaguchi ,  Hiroyoshi Haga ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Yuuji Wada ,  Kazuki Yogosawa ,  Shinya Tanaka ,  Masayoshi Nakayama

IPC分类号： G03G15/20 ,  G03G15/16

CPC分类号： G03G15/1675 ,  G03G15/1605 ,  G03G15/162 ,  G03G15/1665 ,  G03G15/1685

摘要： An image forming apparatus includes an image bearer, a transfer member, and a power source. The image bearer includes a plurality of layers. The transfer member forms a transfer nip between the image bearer and the transfer member. The power source outputs a transfer bias to transfer a toner image from the image bearer onto a recording sheet in the transfer nip. The transfer bias alternates between a transfer-side bias that causes the toner image to move from the image bearer to the recording sheet, and an opposite-side bias different from the transfer-side bias. A duty ratio of a time period, during which the opposite-side bias is output, relative to one cycle of a waveform, is greater than 50%.

摘要翻译： 图像形成装置包括图像载体，转印构件和电源。 图像载体包括多个层。 转印部件在图像承载体和转印部件之间形成转印辊隙。 电源输出转印偏压以将调色剂图像从图像载体转印到转印辊隙中的记录纸上。 转印偏压在导致调色剂图像从图像载体移动到记录片材的转印侧偏置之间交替，并且与转印侧偏压不同的相反侧偏置交替。 相对于波形的一个周期，输出相对侧偏压的时间段的占空比大于50％。

公开(公告)号：US09310722B2

公开(公告)日：2016-04-12

申请号：US14005770

申请日：2012-03-16

申请人： Shinya Tanaka ,  Naomi Sugimoto ,  Haruo Iimura ,  Shinji Aoki ,  Yasuhiko Ogino ,  Kazuchika Saeki ,  Keigo Nakamura

发明人： Shinya Tanaka ,  Naomi Sugimoto ,  Haruo Iimura ,  Shinji Aoki ,  Yasuhiko Ogino ,  Kazuchika Saeki ,  Keigo Nakamura

IPC分类号： G03G15/16 ,  G03G15/01

CPC分类号： G03G15/1675 ,  G03G15/0131 ,  G03G15/0189 ,  G03G15/1665 ,  G03G15/80

摘要： [Problem to be solved] To provide an image forming apparatus for suppressing formations of white spots and achieving high quality images, while obtaining sufficient image densities in both of the recessed parts and the projected parts of a recording medium surface.[Solution] An image forming apparatus includes a transfer member 36 that abuts against a surface of an image carrier carrying a toner image and forms a transfer nip, and a power supply 39 that outputs a voltage (transfer bias) for causing the toner image on the image carrier to be transferred onto a recording medium P nipped in the transfer nip. The voltage is switched alternatingly between a transfer direction voltage for causing the toner image to be transferred from the image carrier onto the recording medium and a voltage having an opposite polarity of the transfer direction voltage when the toner image on the image carrier is to be transferred onto the recording medium. A time-averaged value (Vave) of the voltage is set to a transfer direction polarity that causes the toner image to be transferred from the image carrier onto the recording medium, and is set more in the transfer direction than a median voltage (Voff) between a maximum and a minimum of the voltage.

摘要翻译： [待解决的问题]提供一种用于抑制白点的形成并实现高质量图像的图像形成装置，同时在记录介质表面的凹陷部分和投影部分中获得足够的图像密度。 图像形成装置包括：转印构件36，其抵靠承载调色剂图像的图像载体的表面并形成转印压区;以及电源39，其输出用于使调色剂图像打开的电压（转印偏压） 要传送到夹持在转印辊隙中的记录介质P上的图像载体。 电压在用于使调色剂图像从图像载体转印到记录介质上的转印方向电压和当图像载体上的调色剂图像将被转印时具有与转印方向电压相反的极性的电压交替切换 到记录介质上。 将电压的时间平均值（Vave）设定为使得调色剂图像从图像载体转印到记录介质上的转印方向极性，并且在转印方向上设定为比中值电压（Voff）更大， 在最大和最小的电压之间。

公开(公告)号：US09291934B2

公开(公告)日：2016-03-22

申请号：US13666474

申请日：2012-11-01

申请人： Yasunobu Shimizu ,  Hiromi Ogiyama ,  Hirokazu Ishii ,  Shinya Tanaka ,  Keigo Nakamura

发明人： Yasunobu Shimizu ,  Hiromi Ogiyama ,  Hirokazu Ishii ,  Shinya Tanaka ,  Keigo Nakamura

IPC分类号： G03G15/16 ,  G03G15/01

CPC分类号： G03G15/0189 ,  G03G15/1605 ,  G03G15/1675

摘要： An image forming apparatus includes an image bearing member to bear a toner image on a surface thereof, a transfer device to transfer the toner image onto a recording medium, and a transfer bias power source to apply to the transfer device a superimposed transfer bias in which an alternating current (AC) component is superimposed on a direct current (DC) component in a superimposed transfer mode to transfer the toner image. The superimposed transfer bias has a waveform in which a first polarity in a direction of transferring the toner image onto the recording medium and a second polarity opposite the first polarity switch alternately. The superimposed transfer bias is output such that a standard value of each of the DC component and the AC component is multiplied by a respective correction ratio, and the correction ratio of the DC component is different from that of the AC component.

摘要翻译： 图像形成装置包括在其表面上承载调色剂图像的图像承载部件，将调色剂图像转印到记录介质上的转印装置和转印偏压电源，以向转印装置施加叠加的转印偏压，其中 交流（AC）分量以重叠传送模式叠加在直流（DC）分量上以转印调色剂图像。 叠加的转印偏压具有波形，其中在将调色剂图像转印到记录介质上的方向上的第一极性和与第一极性开关相反的第二极性交替。 输出叠加的转印偏压，使得每个DC分量和AC分量的标准值乘以相应的校正比，并且DC分量的校正比不同于AC分量的校正比。

公开(公告)号：US09285722B2

公开(公告)日：2016-03-15

申请号：US13893594

申请日：2013-05-14

申请人： Shinya Tanaka ,  Hirokazu Ishii ,  Yasunobu Shimizu ,  Keigo Nakamura

发明人： Shinya Tanaka ,  Hirokazu Ishii ,  Yasunobu Shimizu ,  Keigo Nakamura

IPC分类号： G03G15/16

CPC分类号： G03G15/1665 ,  G03G15/1675

摘要： An image forming apparatus includes a transfer bias output device and an information receiving device. The transfer bias output device outputs a transfer bias including a superimposed bias composed of an AC bias superimposed on a DC bias to form a transfer electric field in a transfer nip between an image bearing member bearing a toner image and a nip forming member, to transfer the toner image onto a recording medium in the transfer nip. A controller operatively connected to the information receiving device and the transfer bias output device causes the transfer bias output device to change a target output of a peak-to-peak voltage of the AC bias based on information received by the information receiving device that affects transfer of the toner image and to reduce a target output of the DC bias as the target output value of the peak-to-peak voltage of the AC bias increases.

摘要翻译： 图像形成装置包括转印偏压输出装置和信息接收装置。 转印偏压输出装置输出包括由叠加在DC偏压上的AC偏压组成的叠加偏压的转印偏压，以在承载调色剂图像的图像承载部件和辊隙形成部件之间的转印辊隙中形成转印电场，以转印 调色剂图像转印到转印辊隙中的记录介质上。 可操作地连接到信息接收装置和转移偏置输出装置的控制器使得转移偏置输出装置基于影响转移的信息接收装置接收的信息来改变AC偏压的峰峰值电压的目标输出 并且当AC偏压的峰 - 峰电压的目标输出值增加时，减小DC偏压的目标输出。

公开(公告)号：US09205206B2

公开(公告)日：2015-12-08

申请号：US12088628

申请日：2006-09-13

申请人： Takehiro Hamaguchi ,  Shinya Tanaka ,  Satoshi Kurata ,  Hideyuki Kobayashi

发明人： Takehiro Hamaguchi ,  Shinya Tanaka ,  Satoshi Kurata ,  Hideyuki Kobayashi

IPC分类号： A61M11/02 ,  A61M15/00

CPC分类号： A61M11/02 ,  A61M11/001 ,  A61M11/005 ,  A61M11/06 ,  A61M15/00 ,  A61M15/0021

摘要： A mouthpiece (150A) has an aerosol lead-out flow passage (104), an aerosol lead-out opening (105), and exhalation discharge openings (106). The lead-out flow passage (104) includes a first flow passage (104A) extending upward, a second flow passage (104B) extending obliquely forward from the first flow passage (104A), and a corner flow passage (104C) for connecting the first flow passage (104A) and second flow passage (104B) of the lead-out flow passage (104). The mouthpiece (150A) has a curvature portion (153) formed by curving that portion of the first flow passage (104A) wall surface which crosses the center line of the first flow passage (104A). The exhalation discharge openings (106) are provided in a wall surface defining the second flow passage (104B), at a position circumferentially displaced from the wall surface portion at which the curvature portion (153) is provided. In the mouthpiece and an inhaler with the mouthpiece, although an exhalation valve and, in addition, an inhalation valve are eliminated, leakage of aerosol from a pressure regulation opening and the exhalation opening is prevented irrespective of usage manners.

摘要翻译： 吸嘴（150A）具有气溶胶引出流动通道（104），气溶胶引出口（105）和呼气排放口（106）。 引出流路（104）包括向上延伸的第一流路（104A），从第一流路（104A）向斜前方延伸的第二流路（104B），以及用于将 第一流路（104A）和第一流出通道（104B）。 接口（150A）具有通过使与第一流路（104A）的中心线交叉的第一流路（104A）壁面的部分弯曲而形成的曲率部（153）。 呼出排出口（106）设置在限定第二流路（104B）的壁面的与设置曲率部（153）的壁面部周向偏移的位置。 在接口管和具有接口管的吸入器中，尽管排气阀和另外的吸入阀被消除，但是无论使用方式如何，都可以防止气溶胶从压力调节开口和呼气口泄漏。

公开(公告)号：US09164462B2

公开(公告)日：2015-10-20

申请号：US14287639

申请日：2014-05-27

申请人： Keigo Nakamura ,  Hirokazu Ishii ,  Yasunobu Shimizu ,  Hiromi Ogiyama ,  Shinya Tanaka

发明人： Keigo Nakamura ,  Hirokazu Ishii ,  Yasunobu Shimizu ,  Hiromi Ogiyama ,  Shinya Tanaka

IPC分类号： G03G15/16 ,  G03G15/00

CPC分类号： G03G15/6535 ,  G03G15/1675 ,  G03G15/6532 ,  G03G2215/00772 ,  G03G2215/00776

摘要： An image forming apparatus includes a transfer device to transfer a toner image formed on an image bearing member onto a recording medium, a sheet separation device to separate the recording medium from the image bearing member, a sheet separation bias application device to apply to the sheet separation device a sheet separation bias in which an alternating current (AC) component is superimposed on a direct current (DC) component, and a transfer bias application device to selectively apply to the transfer device one of a DC transfer bias having a DC component and a superimposed transfer bias in which an AC component is superimposed on a DC component. Upon application of the superimposed transfer bias to the transfer device, the sheet separation bias applied to the sheet separation device is changed from the sheet separation bias applied upon application of the DC transfer bias to the transfer device.

摘要翻译： 图像形成装置包括：转印装置，用于将形成在图像承载部件上的调色剂图像转印到记录介质上;片材分离装置，用于将记录介质与图像承载部件分离;片材分离偏置施加装置， 分离装置，其中交流（AC）分量叠加在直流（DC）分量上的薄片分离偏压，以及转印偏压施加装置，用于选择性地向转印装置施加具有DC分量的DC转印偏压和 其中AC分量叠加在DC分量上的叠加转印偏压。 当向转印装置施加叠加的转印偏压时，施加到纸张分离装置的纸张分离偏压从施加到转印装置上的纸张分离偏压改变。