-
公开(公告)号：US10890858B2
公开(公告)日：2021-01-12
申请号：US16568548
申请日：2019-09-12
发明人： Kengo Yada , Keigo Nakajima , Shota Iriyama , Kazuaki Ooka
IPC分类号： G03G15/08
摘要： A development device includes a layer thickness regulating blade including a support sheet metal, a blade rubber section, and a side edge seal, the support sheet metal having a first end portion, a second end portion, and a center portion between the first end portion and the second end portion, in an axial direction of a development roller. In a width direction of the support sheet metal, the first end portion of the support sheet metal in the axial direction is shorter than the center portion of the support sheet metal in the axial direction. In the width direction, a distal-end edge of the first end portion of the support sheet metal is closer to a base end portion of the support sheet metal than a distal-end edge of the blade rubber section.
-
公开(公告)号：US20180246462A1
公开(公告)日：2018-08-30
申请号：US15901357
申请日：2018-02-21
发明人： Shota Iriyama , Kazutoshi Kotama , Chieko Mimura , Kengo Yada , Hotaka Kakutani
CPC分类号： G03G21/06 , G03G15/0266 , G03G15/50 , G03G21/0094 , G03G2215/02
摘要： An image forming apparatus executes charging, exposure, toner-supply suspension, and electric-field generation while a photosensitive member rotates at least a full turn. In the charging, a charger charges a portion of a circumferential surface of the photosensitive member. In the exposure, an exposure device exposes the portion, which has been charged in the charging, of the circumferential surface. In the toner-supply suspension, before the portion, which has been exposed in the exposure, of the circumferential surface passes a position at which developer from a developing unit is configured to initially adhere to the circumferential surface, a developing unit stops supplying developer to the photosensitive member. In the electric-field generation, an electric field is generated in a portion of the photosensitive layer of the photosensitive member corresponding to the portion, which has been exposed in the second exposure, of the circumferential surface.
-
公开(公告)号：US11537062B2
公开(公告)日：2022-12-27
申请号：US17476975
申请日：2021-09-16
发明人： Kazuaki Ooka , Junichi Hashimoto , Shota Iriyama , Keigo Nakajima , Kengo Yada
摘要： A developing cartridge includes: a casing, a developing roller, a first agitator, a supply roller, and a second agitator. The casing is configured to accommodate toner. The developing roller is rotatable about a developing roller rotation axis extending in a first direction. The first agitator is configured to agitate the toner. The first agitator is rotatable about a first agitator rotation axis extending in the first direction. The supply roller is positioned between the first agitator and the developing roller. The supply roller is rotatable about a supply roller rotation axis extending in the first direction. The second agitator is positioned between the supply roller and the first agitator. The second agitator is rotatable about a second agitator rotation axis extending in the first direction. A rotation locus of the second agitator is positioned outside of a rotation locus of the first agitator.
-
公开(公告)号：US10684584B1
公开(公告)日：2020-06-16
申请号：US16567319
申请日：2019-09-11
发明人： Shota Iriyama , Keigo Nakajima , Kengo Yada , Kei Katagiri , Kazuaki Ooka
摘要： A development device includes a housing, a development roller, and a layer thickness regulating blade, the layer thickness regulating blade including a support sheet metal and a blade rubber section, the blade rubber section including a contact portion and an extension, the contact portion contacting the development roller, the extension extending from the contact portion, the extension including a curved surface portion having a curved surface, the curved surface being formed to be closer to the support sheet metal in a thickness direction of the support sheet metal as being farther away from the contact portion, the curved surface having a curvature radius equal to or more than 1.5 mm and equal to or less than 3.0 mm, the curved surface portion having a height equal to or less than 1.0 mm in the thickness direction.
-
公开(公告)号：US10248072B2
公开(公告)日：2019-04-02
申请号：US16014652
申请日：2018-06-21
发明人： Kengo Yada , Keigo Nakajima , Yuichi Matsushita , Hotaka Kakutani , Shota Iriyama , Atsushi Ozawa
摘要： A cleaning roller includes a shaft and an elastic body. The shaft extends in an axial direction where a center axis of the shaft extends. The shaft defines a radial direction and has a circumferential surface. The elastic body is helically wound about the shaft and defines a helical direction. The elastic body has a widthwise dimension in a widthwise direction orthogonal to the helical direction and to the radial direction. The elastic body has a base end portion extending in the helical direction and a distal end portion extending in the helical direction. The base end portion is in contact with the circumferential surface and fixed thereto. The distal end portion has a sharp edge and is positioned farthest from the circumferential surface in the radial direction. The widthwise dimension is gradually reduced from the base end portion to the distal end portion in the radial direction.
-
公开(公告)号：US20180284634A1
公开(公告)日：2018-10-04
申请号：US15901457
申请日：2018-02-21
发明人： Shota Iriyama , Kazutoshi Kotama , Chieko Mimura , Kengo Yada , Hotaka Kakutani
摘要： An image forming apparatus executes reverse charging, toner-supply suspension, second exposure, and second charging, while a photosensitive member rotates at least a full turn. In the reverse charging, a charger charges a portion of a circumferential surface of the photosensitive member to a specified polarity. In the toner-supply suspension, before the portion, which has been charged to the second polarity in the reverse charging, of the circumferential surface of the photosensitive member passes a position at which the developer from the developing unit is configured to initially adhered to the circumferential surface, a developing unit stops supplying developer to the circumferential surface. In the second exposure, an exposure device exposes the portion, which has been charged to the specified polarity in the reverse charging, of the circumferential surface. In the second charging the charger charges the portion, which has been exposed in the second exposure, of the circumferential surface.
-
公开(公告)号：US09989914B2
公开(公告)日：2018-06-05
申请号：US15420358
申请日：2017-01-31
发明人： Kengo Yada , Yuichi Matsushita , Keigo Nakajima , Hotaka Kakutani , Shota Iriyama , Atsushi Ozawa
CPC分类号： G03G21/0058 , G03G15/0225
摘要： A cleaning roller including a shaft including a rotational axis extending in an axial direction and an elastic layer covering the shaft. The elastic layer includes a base covering the shaft and a first helical protrusion protruding from the base and having a first helical ridge.
-
公开(公告)号：US20240264556A1
公开(公告)日：2024-08-08
申请号：US18435136
申请日：2024-02-07
发明人： Shota Iriyama , Daisuke Ishizuka , Misato Osuka
IPC分类号： G03G15/20
CPC分类号： G03G15/2032
摘要： An image forming apparatus includes a main housing, a process unit, and a fixing device including a lever. The main housing comprises an interlock switch that allows power to be supplied to a heater of the fixing device in an on-state and shuts off power to the heater in an off-state. The lever includes a holding portion and a switch contacting portion contactable with the interlock switch. In a case where the fixing device is installed in the main housing and the lever is located at a first position, the switch contacting portion is in contact with the interlock switch to set the interlock switch to the on-state. In a case where the fixing device is installed in the main housing and the lever is located at a second position, the switch contacting portion is separated from the interlock switch to set the interlock switch to the off-state.
-
公开(公告)号：US11709458B2
公开(公告)日：2023-07-25
申请号：US17653140
申请日：2022-03-02
发明人： Keita Suzuki , Shota Iriyama
CPC分类号： G03G21/203 , G03G15/065
摘要： An image forming apparatus includes a photoconductive drum, a developing roller, a humidity sensor configured to detect a humidity, and a controller configured to execute a single-side printing, a first-double-side printing and a second double-side printing. The controller is configured to execute the first double-side printing in which images are printed at a first developing-bias voltage on both the first surface and the second surface of the sheet when the humidity detected by the humidity sensor is greater than a threshold value. The controller is configured to execute the second double-side printing in which an image is printed at a second developing-bias voltage, which is less than the first developing-bias voltage, on the second surface of the sheet when the humidity detected by the humidity sensor is equal to or less than the threshold value.
-
10.发明授权公开(公告)号：US11415912B2
公开(公告)日：2022-08-16
申请号：US17160939
申请日：2021-01-28
发明人： Hotaka Kakutani , Kazuaki Ooka , Kengo Yada , Ayaka Komori , Shota Iriyama , Keigo Nakajima , Junichi Hashimoto
IPC分类号： G03G15/10
摘要： A developing cartridge includes a casing, a developing roller, a supply roller, a first agitator and a second agitator. The casing is configured to accommodate toner therein. The supply roller is configured to supply the toner to the developing roller. The first agitator is configured to agitate the toner in the casing. The second agitator is configured to agitate the toner in the casing. The second agitator is positioned between the first agitator and the supply roller. The second agitator includes a blade having a tip end configured to contact a peripheral surface of the supply roller.
-
-
-
-
-
-
-
-
-
搜索结果
37 条记录 (耗时 0.02 秒)
