专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US11150578B2 Developing device having air discharge duct and image forming apparatus including the developing device 有权
公开(公告)号：US11150578B2
公开(公告)日：2021-10-19
申请号：US16995574
申请日：2020-08-17
申请人： KYOCERA Document Solutions Inc.
发明人： Minoru Wada , Yuji Kamiyama , Ikuo Makie , Yu Sasaki , Yukari Ota , Ryo Yamada
IPC分类号： G03G15/08 , G03G21/20
摘要： 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.

2. 发明授权

US09639024B2 Developing device and image forming apparatus including same 有权
公开(公告)号：US09639024B2
公开(公告)日：2017-05-02
申请号：US15227540
申请日：2016-08-03
申请人： KYOCERA Document Solutions Inc.
发明人： Yasuhiro Tauchi , Yukari Ota , Shinji Otani , Takashi Somete , Yoshimi Shimizu
IPC分类号： G03G15/09 , G03G15/08
CPC分类号： G03G15/0812 , G03G15/081 , G03G15/0815 , G03G15/09
摘要： 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.

3. 发明授权

US11366403B2 Image forming apparatus capable of suppressing a white void in an image and a cleaning failure in a non-magnetic one component development device 有权
公开(公告)号：US11366403B2
公开(公告)日：2022-06-21
申请号：US17486111
申请日：2021-09-27
申请人： KYOCERA Document Solutions Inc.
发明人： Yukari Ota , Masahito Ishino , Takahisa Nakaue , Tomohiro Tamaki , Kotatsu Kawaguchi
IPC分类号： G03G15/02 , G03G15/08 , G03G15/06
摘要： 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).

4. 发明申请

US20220107581A1 IMAGE FORMING APPARATUS 有权
公开(公告)号：US20220107581A1
公开(公告)日：2022-04-07
申请号：US17449068
申请日：2021-09-27
申请人： KYOCERA Document Solutions Inc.
发明人： Minoru Wada , Masahito Ishino , Takahisa Nakaue , Yukari Ota , Tomohiro Tamaki
IPC分类号： G03G15/06 , G03G15/02
摘要： An image forming apparatus includes an image-carrying member, a charging device, an exposure device, and a developing device. The charging device charges a surface of the image-carrying member. The exposure device writes an electrostatic latent image on the surface of the image-carrying member by exposing the charged surface of the image-carrying member. The developing device includes a developing roller and a bias output circuit. The bias output circuit applies a developing bias to the developing roller. A potential VH of a non-exposure portion charged on the surface of the image-carrying member, a potential VL of an exposure portion on the surface of the image-carrying member, and the developing bias VDD meet a relationship of VH−VDD≥2 (VDD−VL). In addition, a difference between the developing bias VDD and the potential VL of the exposure portion (VDD−VL) is 100 V or more.

5. 发明授权

US11340537B2 Development device and image forming apparatus including the development device 有权
公开(公告)号：US11340537B2
公开(公告)日：2022-05-24
申请号：US17373245
申请日：2021-07-12
申请人： KYOCERA Document Solutions Inc.
发明人： Masahito Ishino , Kotatsu Kawaguchi , Takahisa Nakaue , Yukari Ota , Tomohiro Tamaki
IPC分类号： G03G15/08
摘要： A development device includes a development housing, a development roller, a supply roller and a layer thickness regulating member. The development housing stores a nonmagnetic one-component toner. The development roller is formed by a cylindrical elastic body, and moves in a same direction as a rotational direction of a rotatable photosensitive drum at a development nip area while coming into contact with the photosensitive drum. The supply roller is formed by a cylindrical elastic body, and supplies the toner to the development roller and collects the toner from the development roller. The development roller has a surface free energy within a range of 5 mJ/m2 or more and 27 mJ/m2 or less.

6. 发明授权

US09541861B2 Developing device, image forming apparatus, developing device control method 有权
标题翻译：显影装置，成像装置，显影装置控制方法
公开(公告)号：US09541861B2
公开(公告)日：2017-01-10
申请号：US15098229
申请日：2016-04-13
申请人： KYOCERA Document Solutions Inc.
发明人： Yasuhiro Tauchi , Yukari Ota
IPC分类号： G03G15/00 , G03G15/08 , G03G15/06
CPC分类号： G03G15/0877 , G03G15/065 , G03G15/0808 , G03G15/0812
摘要： A developing device includes a toner carrying member, a developer carrying member, a layer thickness restricting portion, a rotation control portion, and a developer carrying member difference voltage control portion. The rotation control portion, when developing is not performed, causes the developer carrying member to rotate forwardly and then to rotate reversely. The developer carrying member difference voltage control portion, in the non-developing forward rotation state, sets a voltage of the developer carrying member that is based on a potential of the toner carrying member, to a voltage that is smaller than a first reference voltage that is set when the developing is performed. The non-developing forward rotation state is a state in which the developer carrying member rotates forwardly when the developing is not performed.
摘要翻译：显影装置包括调色剂承载构件，显影剂承载构件，层厚度限制部分，旋转控制部分和显影剂承载构件差异电压控制部分。旋转控制部在不进行显影时，使显影剂承载构件向前旋转，然后反转。显影剂承载构件差动电压控制部分处于非显影正向旋转状态，将基于调色剂承载构件的电位的显影剂承载构件的电压设定为小于第一参考电压的电压，在显影时进行设定。非显影正向旋转状态是当不进行显影时，显影剂承载构件向前旋转的状态。

7. 发明授权

US11467513B2 Image forming apparatus 有权
公开(公告)号：US11467513B2
公开(公告)日：2022-10-11
申请号：US17486021
申请日：2021-09-27
申请人： KYOCERA Document Solutions Inc.
发明人： Tomohiro Tamaki , Takahisa Nakaue , Kotatsu Kawaguchi , Masahito Ishino , Yukari Ota
IPC分类号： G03G15/06 , G03G15/08 , G03G15/02
摘要： 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. X + 393.2 ⁢ and , ( 1 ) Y ≤ 47. X + 450.1 . ( 2 )

8. 发明授权

US10120301B1 Developing device and image forming apparatus including same 有权
公开(公告)号：US10120301B1
公开(公告)日：2018-11-06
申请号：US15941963
申请日：2018-03-30
申请人： KYOCERA Document Solutions Inc.
发明人： Yukari Ota
IPC分类号： G03G15/08
CPC分类号： G03G15/0893 , G03G15/0889 , G03G2215/0819
摘要： 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.

9. 发明授权

US10073373B2 Image forming apparatus and image forming method that ensure improved measurement sensitivity of patch density with optical sensor, and recording medium therefor 有权
公开(公告)号：US10073373B2
公开(公告)日：2018-09-11
申请号：US15646355
申请日：2017-07-11
申请人： Kyocera Document Solutions Inc.
发明人： Yoshimi Shimizu , Yukari Ota
IPC分类号： G03G15/06
CPC分类号： G03G15/065 , G03G15/5058 , G03G2215/0164
摘要： An image forming apparatus includes a photoreceptor, an exposure unit, a developing unit, and a control unit. The control unit sets the toner-layer-forming electric potential difference lower than an electric potential when forming the image on the print medium, forms a combined patch for calibration by the set toner-layer-forming electric potential difference for calibration, so as to adjust the developing-bias potential by measuring a print density of the formed combined patch. The combined patch includes a first patch and a plurality of second patches. The plurality of second patches have a width within a range of 0.2 mm to the predetermined value in the peripheral-velocity direction of the photoreceptor, extend with a length equal to or more than the predetermined value in the rotation-shaft direction of the photoreceptor, and are arranged at a predetermined interval in the peripheral-velocity direction of the photoreceptor.

10. 发明申请

US20180011417A1 Image Forming Apparatus and Image Forming Method That Ensure Improved Measurement Sensitivity of Patch Density with Optical Sensor, and Recording Medium Therefor 审中-公开
公开(公告)号：US20180011417A1
公开(公告)日：2018-01-11
申请号：US15646355
申请日：2017-07-11
申请人： Kyocera Document Solutions Inc.
发明人： Yoshimi Shimizu , Yukari Ota
IPC分类号： G03G15/06
CPC分类号： G03G15/065 , G03G15/5058 , G03G2215/0164
摘要： An image forming apparatus includes a photoreceptor, an exposure unit, a developing unit, and a control unit. The control unit sets the toner-layer-forming electric potential difference lower than an electric potential when forming the image on the print medium, forms a combined patch for calibration by the set toner-layer-forming electric potential difference for calibration, so as to adjust the developing-bias potential by measuring a print density of the formed combined patch. The combined patch includes a first patch and a plurality of second patches. The plurality of second patches have a width within a range of 0.2 mm to the predetermined value in the peripheral-velocity direction of the photoreceptor, extend with a length equal to or more than the predetermined value in the rotation-shaft direction of the photoreceptor, and are arranged at a predetermined interval in the peripheral-velocity direction of the photoreceptor.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式