公开(公告)号：US20220107585A1

公开(公告)日：2022-04-07

申请号：US17488656

申请日：2021-09-29

Applicant: KYOCERA Document Solutions Inc.

Inventor： Takahisa NAKAUE ,  Kotatsu KAWAGUCHI ,  Masahito ISHINO ,  Yukari OTA ,  Tomohiro TAMAKI

IPC: G03G15/08

Abstract: A development device includes a development container, a developer carrier, a regulating blade. The development container contains a non-magnetic one-component developer consisting of a toner only. The regulating blade has a curved part having a radius of curvature of 0.1 mm or more and coming into contact with the roller part. The curved part has an arithmetic average roughness Ra of 0.05 to 0.3 μm. The roller part has a ten-point average roughness Rz of 2 to 4 μm. The roller part has a concave and convex portion, and an average interval Sm between the concave portion and the convex portion is 120 to 290 μm. A Sm/Rz is 30 to 145. A width of a nip area between the regulating blade and the roller part in a circumferential direction of the roller part is 0.1 to 0.95 mm.

公开(公告)号：US20210055674A1

公开(公告)日：2021-02-25

申请号：US16995574

申请日：2020-08-17

Applicant: KYOCERA Document Solutions Inc.

Inventor： Minoru WADA ,  Yuji KAMIYAMA ,  Ikuo MAKIE ,  Yu SASAKI ,  Yukari OTA ,  Ryo YAMADA

IPC: G03G15/08

Abstract: A developing device includes a developing container, a first stirring member and a second stirring member, and a developing roller. The developing container includes a first stirring chamber, a second stirring chamber, and a communication portion. The first stirring member includes a reverse spiral vane that conveys a developer in a direction reverse to a circulation direction. An air discharge duct is formed on a wall portion of the first stirring chamber opposed to the reverse spiral vane and in an area excluding the communication portion and discharges air from the first stirring chamber to an outside of the developing container via an air discharge port at a distal end of the air discharge duct. A filtration portion is disposed in the air discharge duct adjacently to the air discharge port and restricts leakage of the developer through the air discharge port.

公开(公告)号：US20170075254A1

公开(公告)日：2017-03-16

申请号：US15227540

申请日：2016-08-03

Applicant: KYOCERA Document Solutions Inc.

Inventor： Yasuhiro TAUCHI ,  Yukari OTA ,  Shinji OTANI ,  Takashi SOMETE ,  Yoshimi SHIMIZU

IPC: G03G15/09

CPC classification number: G03G15/0812 ,  G03G15/081 ,  G03G15/0815 ,  G03G15/09

Abstract: A developing device of the present disclosure includes a developing roller, a toner supplying roller, a regulation blade, a casing, a toner receiver support member, a toner receiver member, and a vibration generator. The toner receiver support member is disposed inside the casing so as to face the developing roller or the toner supplying roller between the regulation blade and an image carrier. The toner receiver member is disposed along a longitudinal direction of the toner receiver support member, and has a toner receiving surface that receives toner falling from the developing roller. The vibration generator vibrates the toner receiver member. At each end part of the toner receiving surface in its longitudinal direction, there is formed a thin-walled portion that is thinner in thickness than other parts of the toner receiving surface.

Abstract translation: 本公开的显影装置包括显影辊，调色剂供应辊，调节片，壳体，调色剂接收器支撑构件，调色剂接收构件和振动发生器。 调色剂接收器支撑构件设置在壳体内部，以便与调节叶片和图像载体之间的显影辊或调色剂供应辊相对。 调色剂接收构件沿调色剂接收器支撑构件的纵向设置，并且具有接受从显影辊落下的调色剂的调色剂接收表面。 振动发生器振动调色剂接收器构件。 在调色剂接收表面的纵向方向的每个端部，形成有比调色剂接收表面的其它部分更薄的薄壁部分。

公开(公告)号：US20220107584A1

公开(公告)日：2022-04-07

申请号：US17486021

申请日：2021-09-27

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tomohiro TAMAKI ,  Takahisa NAKAUE ,  Kotatsu KAWAGUCHI ,  Masahito ISHINO ,  Yukari OTA

IPC: G03G15/08 ,  G03G15/06 ,  G03G15/02

Abstract: An image forming apparatus includes an image carrier, a charger, an exposure device, a development device and a pressing mechanism. The developer carrier is pressed on the image carrier with a predetermined pressing force to form a nip area between the roller part and the image carrier. A roller part of the developer carrier has an Asker C hardness of 65° or more and 73° or less. When the pressing force is set to X (N) and a width of the nip area in a circumferential direction of the image carrier is set to Y (μm), 3.0≤X≤8.0 and 550≤Y≤700, and the following expressions (1) and (2) are satisfied, Y ≥ 31.0 ⁢ ⁢ X + 393.2 ⁢ ⁢ and , ( 1 ) Y ≤ 47.0 ⁢ X + 450.1 . ( 2 )

公开(公告)号：US20180321617A1

公开(公告)日：2018-11-08

申请号：US15941963

申请日：2018-03-30

Applicant: KYOCERA Document Solutions Inc.

Inventor： Yukari OTA

IPC: G03G15/08

CPC classification number: G03G15/0893 ,  G03G15/0889 ,  G03G2215/0819

Abstract: A developing device of the present disclosure includes a developing container, a first stirring-conveyance member, a second stirring-conveyance member, and a developer carrier. The developing container includes a first conveyance chamber, and a second conveyance chamber arranged above the first conveyance chamber. The first stirring-conveyance member conveys a developer in the first conveyance chamber in a first direction, while stirring the developer. The second stirring-conveyance member conveys the developer in the second conveyance chamber in a second direction, while stirring the developer. The first stirring-conveyance member includes a plurality of spiral blades formed on an outer peripheral surface of a rotary shaft, and a reverse spiral blade which is arranged downstream of the spiral blades in the first direction and opposite in winding direction to the spiral blades. Downstream ends of the spiral blades in the first direction are located substantially equally distant from the reverse spiral blade.

公开(公告)号：US20220107580A1

公开(公告)日：2022-04-07

申请号：US17486111

申请日：2021-09-27

Applicant: KYOCERA Document Solutions Inc.

Inventor： Yukari OTA ,  Masahito ISHINO ,  Takahisa NAKAUE ,  Tomohiro TAMAKI ,  Kotatsu KAWAGUCHI

IPC: G03G15/02 ,  G03G15/06 ,  G03G15/08

Abstract: An image forming apparatus includes an image carrier, a charger, an exposure device, a development device and a pressing mechanism. When a developer carrier and the image carrier are rotated in a state where a film is held in a development nip area and then a pulling force of the film is measured, a maximum value MAX, a minimum value MIN, and an average value X of the pulling force satisfy the expressions (1) and (2). When a development voltage applied to the developer carrier is set to Vdc, the surface potential of the image carrier is set to V0, and the surface potential of the image carrier after exposure is set to VL, the expressions (3) and (4) are satisfied. X≤MAX≤1.5X  (1), 0.5X≤MIN≤X  (2), V0−Vdc≥2(Vdc−VL)  (3) and Vdc−VL≥100  (4).

公开(公告)号：US20170075252A1

公开(公告)日：2017-03-16

申请号：US15228791

申请日：2016-08-04

Applicant: KYOCERA Document Solutions Inc.

Inventor： Shinji OTANI ,  Yukari OTA ,  Yasuhiro TAUCHI ,  Takashi SOMETE ,  Yoshimi SHIMIZU

IPC: G03G15/09

CPC classification number: G03G15/081 ,  G03G15/0812 ,  G03G15/0815 ,  G03G15/09

Abstract: A developing device includes a developing roller, a toner supplying roller, a regulation blade, a casing, a toner receiver support member, a toner receiver member, and a vibration generator. The toner receiver member is disposed along a longitudinal direction of the toner receiver support member facing the developing roller, and has a toner receiving surface inclined downward from the image-carrier side toward the toner-supplying-roller side. The toner receiving surface is disposed to be inclined so as to rise from the toner-supplying-roller side toward the image-carrier side. The toner receiving surface has a plurality of grooves formed therein to be inclined to approach a center part of the toner receiving surface from each end side of the toner receiving surface in its longitudinal direction, from an edge of the toner receiving surface on the image-carrier side toward an edge of the toner receiving surface on the toner-supplying-roller side.

Abstract translation: 显影装置包括显影辊，调色剂供应辊，调节片，壳体，调色剂接收器支撑构件，调色剂接收构件和振动发生器。 调色剂接收部件沿着面向显影辊的调色剂接收器支撑部件的纵向设置，并且具有从图像载体侧向调色剂供给辊侧向下倾斜的调色剂接收表面。 调色剂接收表面被设置成从调色剂供给辊侧朝向图像载体侧上升。 调色剂接收表面具有形成在其中的多个凹槽，以从图像形成部件上的调色剂接收表面的边缘沿着其长度方向从调色剂接收表面的每个端部侧接近调色剂接收表面的中心部分， 载体侧朝向调色剂供给辊侧的调色剂接收表面的边缘。