公开(公告)号：US20190072894A1

公开(公告)日：2019-03-07

申请号：US16081152

申请日：2018-01-12

Applicant: KYOCERA Document Solutions Inc.

Inventor： Shingo Sakato ,  Nariaki Tanaka ,  Kiyotaka Kobayashi ,  Hiroka Itani ,  Takuji Watanabe ,  Eriko Hayashi

IPC: G03G21/06 ,  G03G15/00

Abstract: In an image forming apparatus, a resistance component of an inner impedance of an electricity removing member is equal to or lower than a value that is obtained by multiplying a calculated resistance value by a first specific value, the calculated resistance value being calculated based on a predetermined formula as a DC resistance value of the electricity removing member that is required to reduce a pre-electricity-removal potential of a photoconductor to a predetermined post-electricity-removal potential during an electricity removal time, the first specific value being calculated based on a ratio of a linear speed of the electricity removing member to a linear speed of the photoconductor, and a resistance component of the contact impedance of the electricity removing member is equal to or lower than a value that is obtained by multiplying the calculated resistance value by a second specific value that is calculated based on the ratio.

公开(公告)号：US10359731B2

公开(公告)日：2019-07-23

申请号：US15995470

申请日：2018-06-01

Applicant: KYOCERA Document Solutions Inc.

Inventor： Shingo Sakato ,  Katsuya Ota

IPC: G03G21/10 ,  G03G21/00

Abstract: An image forming apparatus includes an image carrier carrying a toner image, a developing device, and a cleaning blade. The developing device carries out developing process feeding toner to the image carrier during image forming. The cleaning blade comes into contact with the image carrier and removes waste toner remained on the image carrier. In order to restrain turning-up of the cleaning blade, turning-up restraining process is carried out to feed the toner from the developing device to the image carrier during non-image forming, every time a given cumulative printing number of image forming operation is finished. In the turning-up restraining process, larger toner is fed to the image carrier as a given small size printing number in the cumulative printing number becomes larger.

公开(公告)号：US20170285506A1

公开(公告)日：2017-10-05

申请号：US15474869

申请日：2017-03-30

Applicant: KYOCERA Document Solutions Inc.

Inventor： Hiroka Itani ,  Nariaki Tanaka ,  Shingo Sakato ,  Kiyotaka Kobayashi ,  Takuji Watanabe ,  Eriko Hayashi

IPC: G03G21/00

CPC classification number: G03G21/06

Abstract: An image forming apparatus includes a photoconductor and an electricity removing member electrically grounded and disposed to be in contact with a surface of the photoconductor. In the image forming apparatus, with regard to a capacitance component of an inner impedance of the electricity removing member and a capacitance component of a contact impedance of the electricity removing member that are calculated from a Cole-Cole plot obtained from measurement by an AC impedance method in a predetermined frequency range, a value obtained by dividing the capacitance component of the contact impedance by the capacitance component of the inner impedance is equal to or lower than a predetermined first specific value, and the capacitance component of the inner impedance is equal to or lower than a predetermined second specific value.

公开(公告)号：US10042318B2

公开(公告)日：2018-08-07

申请号：US15474869

申请日：2017-03-30

Applicant: KYOCERA Document Solutions Inc.

Inventor： Hiroka Itani ,  Nariaki Tanaka ,  Shingo Sakato ,  Kiyotaka Kobayashi ,  Takuji Watanabe ,  Eriko Hayashi

IPC: G03G21/00 ,  G03G21/06

Abstract: An image forming apparatus includes a photoconductor and an electricity removing member electrically grounded and disposed to be in contact with a surface of the photoconductor. In the image forming apparatus, with regard to a capacitance component of an inner impedance of the electricity removing member and a capacitance component of a contact impedance of the electricity removing member that are calculated from a Cole-Cole plot obtained from measurement by an AC impedance method in a predetermined frequency range, a value obtained by dividing the capacitance component of the contact impedance by the capacitance component of the inner impedance is equal to or lower than a predetermined first specific value, and the capacitance component of the inner impedance is equal to or lower than a predetermined second specific value.

公开(公告)号：US09063496B2

公开(公告)日：2015-06-23

申请号：US13867459

申请日：2013-04-22

Applicant: KYOCERA Document Solutions Inc.

Inventor： Shingo Sakato ,  Takuji Watanabe

IPC: G03G15/02 ,  G03G15/24 ,  G03G15/16

CPC classification number: G03G15/24 ,  G03G15/0266 ,  G03G15/1675

Abstract: An image forming apparatus includes a photosensitive drum, a charging roller, a transfer roller, a first bias application unit, a second bias application unit, and a control unit. The charging roller contains an ion conductive material. The first bias application unit applies a first bias to the charging roller. The second bias application unit applies a predetermined bias to the transfer roller. The control unit controls the first bias application unit not to apply the first bias to the charging roller in a non-image forming period in which a toner image is not formed on the photosensitive drum. The control unit controls the second bias application unit to apply the second bias, which is a bias that can electrically charge the surface of the photosensitive drum, to the transfer roller in the non-image forming period.

Abstract translation: 图像形成装置包括感光鼓，充电辊，转印辊，第一偏压施加单元，第二偏压施加单元和控制单元。 充电辊包含离子导电材料。 第一偏置施加单元对充电辊施加第一偏压。 第二偏压施加单元对转印辊施加预定的偏压。 控制单元控制第一偏置施加单元在不在感光鼓上未形成调色剂图像的非图像形成期间内对第一偏压施加到充电辊。 控制单元控制第二偏压施加单元，以在非图像形成期间内将作为可以使感光鼓的表面充电的偏压的第二偏压施加到转印辊。

公开(公告)号：US10310441B2

公开(公告)日：2019-06-04

申请号：US16081152

申请日：2018-01-12

Applicant: KYOCERA Document Solutions Inc.

Inventor： Shingo Sakato ,  Nariaki Tanaka ,  Kiyotaka Kobayashi ,  Hiroka Itani ,  Takuji Watanabe ,  Eriko Hayashi

IPC: G03G21/06 ,  G03G15/00 ,  G03G15/02

Abstract: In an image forming apparatus, a resistance component of an inner impedance of an electricity removing member is equal to or lower than a value that is obtained by multiplying a calculated resistance value by a first specific value, the calculated resistance value being calculated based on a predetermined formula as a DC resistance value of the electricity removing member that is required to reduce a pre-electricity-removal potential of a photoconductor to a predetermined post-electricity-removal potential during an electricity removal time, the first specific value being calculated based on a ratio of a linear speed of the electricity removing member to a linear speed of the photoconductor, and a resistance component of the contact impedance of the electricity removing member is equal to or lower than a value that is obtained by multiplying the calculated resistance value by a second specific value that is calculated based on the ratio.

公开(公告)号：US09329521B2

公开(公告)日：2016-05-03

申请号：US14480917

申请日：2014-09-09

Applicant: KYOCERA Document Solutions Inc.

Inventor： Shingo Sakato

IPC: G03G15/06 ,  G03G15/02

CPC classification number: G03G15/065 ,  G03G15/0266 ,  G03G15/0283

Abstract: An image forming apparatus includes a charging member, a charging bias power source, a developing member, a developing bias power source and a controlling device. The charging member electrically charged an image carrier. The charging bias power source applies a DC charging bias to the charging member. The developing member develops a toner image onto the image carrier. The developing bias power source applies an AC and DC developing bias to the developing member. The controlling device carries out, before image forming process, pre-charging control controlling the charging bias power source to electrically charge the image carrier. The controlling device carries out, after the image forming process is started, post-charging control controlling the charging bias power source and developing bias power source to adjust an electrical potential difference between a surface potential of the image carrier and developing bias to a significant electrical potential difference preventing occurrence of image failure.

Abstract translation: 图像形成装置包括充电构件，充电偏压电源，显影构件，显影偏压电源和控制装置。 充电部件对图像载体进行充电。 充电偏压电源对充电部件施加DC充电偏压。 显影构件将调色剂图像显影到图像载体上。 显影偏压电源对显影元件施加AC和DC显影偏压。 控制装置在图像形成处理之前进行预充电控制，控制充电偏压电源对图像载体进行充电。 控制装置在图像形成处理开始之后执行后充电控制，控制充电偏压电源和显影偏压电源，以将图像载体的表面电位和显影偏压之间的电位差调整到显着的电 防止图像故障发生的潜在差异。

公开(公告)号：US20130279928A1

公开(公告)日：2013-10-24

申请号：US13867459

申请日：2013-04-22

Applicant: KYOCERA DOCUMENT SOLUTIONS INC.

Inventor： Shingo Sakato ,  Takuji Watanabe

IPC: G03G15/02 ,  G03G15/16

CPC classification number: G03G15/24 ,  G03G15/0266 ,  G03G15/1675

Abstract: An image forming apparatus includes a photosensitive drum, a charging roller, a transfer roller, a first bias application unit, a second bias application unit, and a control unit. The charging roller contains an ion conductive material. The first bias application unit applies a first bias to the charging roller. The second bias application unit applies a predetermined bias to the transfer roller. The control unit controls the first bias application unit not to apply the first bias to the charging roller in a non-image forming period in which a toner image is not formed on the photosensitive drum. The control unit controls the second bias application unit to apply the second bias, which is a bias that can electrically charge the surface of the photosensitive drum, to the transfer roller in the non-image forming period.

Abstract translation: 图像形成装置包括感光鼓，充电辊，转印辊，第一偏压施加单元，第二偏压施加单元和控制单元。 充电辊包含离子导电材料。 第一偏置施加单元对充电辊施加第一偏压。 第二偏压施加单元对转印辊施加预定的偏压。 控制单元控制第一偏置施加单元在不在感光鼓上未形成调色剂图像的非图像形成期间内对第一偏压施加到充电辊。 控制单元控制第二偏压施加单元，以在非图像形成期间内将作为可以使感光鼓的表面充电的偏压的第二偏压施加到转印辊。