公开(公告)号：US12282266B2

公开(公告)日：2025-04-22

申请号：US18599884

申请日：2024-03-08

Applicant: KYOCERA Document Solutions Inc.

Inventor： Minoru Wada ,  Ryo Taniguchi

IPC: G03G15/045 ,  G03G15/00

Abstract: An image forming apparatus includes an image carrier, a charging device, an exposure device, a development device, and a development voltage power supply. The development device includes a development container storing a nonmagnetic one-component developer composed only of a toner, and a developer carrier on which a toner layer is formed on an outer circumferential surface thereof. The development voltage power supply applies a development voltage to the developer carrier. The image forming apparatus alternately forms white regions and exposed regions at a predetermined pitch repeatedly on a surface of the image carrier to form a solid image with an area ratio lower than 100%. Where V0 represents a white-region potential of the image carrier, VL represents an exposed-region potential of the image carrier, Vt represents a toner-layer potential, and Vd represents the development voltage, Vd≤0.5*(V0−VL)+VL−Vt is fulfilled.

公开(公告)号：US12265342B2

公开(公告)日：2025-04-01

申请号：US18489272

申请日：2023-10-18

Applicant: KYOCERA Document Solutions Inc.

Inventor： Minoru Wada ,  Takahiro Okubo ,  Takeru Nagamoto

IPC: G03G15/08 ,  G03G9/08

Abstract: An image forming apparatus includes an image carrying member, a charging device, an exposure device, a developing device, a development voltage power supply, and a control section. The developing device includes a development container which contains a non-magnetic one-component developer and a developer carrying member which includes a rotary shaft and a roller portion stacked on the outer circumferential surface of the rotary shaft, and the resistance value of the roller portion is 9 to 11 [Log Ω], and when the amount of toner conveyed on the developer carrying member is Md [g/m2], the amount of toner adhered on the image carrying member in a solid image is Mp [g/m2], the peripheral speed of the developer carrying member and the image carrying member are Sd [mm/sec] and Sp [mm/sec], 0.8×Sd/Sp

公开(公告)号：US11150578B2

公开(公告)日：2021-10-19

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 ,  G03G21/20

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：US11039029B2

公开(公告)日：2021-06-15

申请号：US16659956

申请日：2019-10-22

Applicant: KYOCERA Document Solutions Inc.

Inventor： Minoru Wada ,  Nobuhiro Maezawa

IPC: H04N1/00 ,  G06F1/26 ,  G06F3/12 ,  G06K15/02

Abstract: An information processing apparatus manages an image forming apparatus installed in a building having a plurality of areas. The information processing apparatus includes an installation area information storage device, containing installation area information indicating each of the areas where the image forming apparatus is installed, a communication device that makes communication with an external apparatus, and a control device including a processor, and configured to acts as a controller, when the processor executes an operation control program. The controller transmits, when an abnormality detection device, provided in each of the areas to detect an abnormality that has occurred in the area, detects the abnormality, a command notice to turn off power for the image forming apparatus installed in the area where the abnormality has occurred, from the communication device to the image forming apparatus, according to the installation area information stored in the installation area information storage device.

公开(公告)号：US09360794B2

公开(公告)日：2016-06-07

申请号：US14892864

申请日：2014-11-10

Applicant: KYOCERA Document Solutions Inc.

Inventor： Minoru Wada ,  Masaru Hatano ,  Yoshinori Horiuchi

IPC: G03G15/08 ,  G03G15/09

CPC classification number: G03G15/0812 ,  G03G15/09 ,  G03G15/0921

Abstract: Provided is a developing device that can restrain stress on a developer and improve image quality. This developing device (3a-3d) is provided with: a developing vessel (20) that accommodates the developer, which includes a magnetic carrier and toner; a supply transport screw (23b); a developing roller (31) that carries the developer supplied by the supply transport screw (23b); an ear cutting blade (32) that regulates layer thickness of the developer on the surface of the developing roller (31); and a magnet (50) magnetized on one surface and disposed on the upstream side of the ear cutting blade (32). The magnet (50) is disposed such that a magnetized surface (50a) faces the side of the developing roller (31).

Abstract translation: 提供了可以抑制显影剂的压力并提高图像质量的显影装置。 该显影装置（3a-3d）设置有：容纳显影剂的显影容器（20），其包括磁性载体和调色剂; 供给输送螺杆（23b）; 承载由供给输送螺杆（23b）供给的显影剂的显影辊（31）; 耳廓切割刀片（32），其调节显影辊（31）的表面上的显影剂的层厚度; 以及在一个表面上磁化并设置在耳朵切割刀片（32）的上游侧的磁体（50）。 磁体（50）设置成使得磁化表面（50a）面向显影辊（31）的侧面。

公开(公告)号：US20140140734A1

公开(公告)日：2014-05-22

申请号：US14085057

申请日：2013-11-20

Applicant: KYOCERA Document Solutions Inc.

Inventor： Takahisa Nakaue ,  Minoru Wada ,  Shizuka Okada ,  Takafumi Yotsutsuji ,  Akifumi Yamaguchi ,  Tamotsu Shimizu

IPC: G03G15/08

CPC classification number: G03G15/0893 ,  G03G15/0879

Abstract: A developing device of this disclosure has: a housing, a developing roller, a developer conveying path, a partition board, a second communication path, a developer receiving port, a first conveying member, a second conveying member, and a conveyance capability inhibition part. A toner is cyclically conveyed in a first conveying path and a second conveying path. A first stirring screw is disposed in the first conveying path and driven into ration around a first rotation axis for toner conveyance. Formed downstream of the first stirring screw by the conveyance capability inhibition part is a toner accumulation part, and the amount of toner refilled from a toner refill port is adjusted. Where an aperture area of the first communication path is A1 and a circular area formed by an outer circumferential edge of the first stirring screw in section orthogonal to the first rotation axis is A2, relationship 0.5×A2

Abstract translation: 本公开的显影装置具有：壳体，显影辊，显影剂输送路径，隔板，第二连通路径，显影剂接收口，第一输送构件，第二输送构件和输送能力抑制部 。 调色剂在第一输送路径和第二输送路径中循环输送。 第一搅拌螺杆设置在第一输送路径中并被驱动成围绕用于调色剂输送的第一旋转轴线的定量。 通过输送能力抑制部分在第一搅拌螺杆的下游形成调色剂积累部分，并且调节从调色剂补充口重新填充的调色剂量。 在第一连通路径的开口面积为A1，由与第一旋转轴线正交的截面形状的第一搅拌螺杆的外周缘形成的圆形区域为A2的情况下，满足关系式0.5×A2

公开(公告)号：US20170269508A1

公开(公告)日：2017-09-21

申请号：US15456938

申请日：2017-03-13

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Eiji Gyotoku ,  Akihiro Watanabe ,  Norio Kubo ,  Minoru Wada ,  Ryo Taniguchi ,  Yasushi Imanishi ,  Takahiro Okubo

IPC: G03G15/09

CPC classification number: G03G15/0889 ,  G03G15/065 ,  G03G15/0808 ,  G03G15/0907 ,  G03G15/0921

Abstract: A developing device includes a developing roller, a conveyor roller, a developer stirring unit and a development bias applying unit. The developing roller is arranged to face a photoconductive drum at a predetermined developing position and supplies the toner. The conveyor roller is arranged to face the developing roller at a predetermined facing position and supplies the developer to the developing roller. The development bias applying unit applies development biases to the first sleeve of the developing roller and the second sleeve of the conveyor roller during a developing operation of developing the electrostatic latent image on the photoconductive drum with the toner. The development bias applying unit applies the development biases such that a shifting electric field to move the toner on the first sleeve of the developing roller toward the second sleeve of the conveyor roller is formed at the facing position during the developing operation.

公开(公告)号：US09740134B2

公开(公告)日：2017-08-22

申请号：US15346142

申请日：2016-11-08

Applicant: KYOCERA Document Solutions Inc.

Inventor： Minoru Wada ,  Masaru Hatano ,  Masaki Kadota ,  Masahito Ishino ,  Keisuke Isoda ,  Atsushi Ishizaki

IPC: G03G15/02 ,  G03G15/043 ,  G03G15/00

CPC classification number: G03G15/0266 ,  G03G15/043 ,  G03G15/5058

Abstract: An image forming apparatus includes an apparatus main body, a photoreceptor drum, a charging apparatus, an exposure apparatus, a developing device, a charging bias applying unit, a developing bias applying unit, an image condition adjusting unit, and a print density measurement unit. The image condition adjusting unit forms a second electric potential region by applying the charging bias where a first differential electric potential is subtracted from a first tentative charging bias on a circumference surface of a photoreceptor drum, and forms a second toner image by an electric potential difference between the second electric potential region and a developing roller by applying the target electric potential. The image condition adjusting unit decides value of the charging bias corresponding to the target electric potential from measurement results of print densities of a first toner image and the second toner image measured by the print density measurement unit.

公开(公告)号：US09280092B2

公开(公告)日：2016-03-08

申请号：US14624422

申请日：2015-02-17

Applicant: KYOCERA Document Solutions Inc.

Inventor： Minoru Wada ,  Masaru Hatano ,  Yoshinori Horiuchi ,  Akira Matayoshi ,  Ayaka Kondo ,  Motoki Moriguchi ,  Masahito Ishino

IPC: G03G15/08

CPC classification number: G03G15/0889 ,  G03G15/0893

Abstract: A developing device includes a storing portion, a stirring member, a developing roller, a shield plate, and a guide portion. The storing portion stores developer. The stirring member is rotatably provided in the storing portion and stirs the developer in the storing portion by being rotationally driven in a predetermined first rotation direction. The developing roller is rotatably provided above the stirring member, has a magnet that attracts the developer in the storing portion by a magnetic force, and is rotationally driven in a predetermined second rotation direction. The shield plate is made of a nonmagnetic material and provided at a facing position where the developing roller and the stirring member face each other. The guide portion is provided more on an upstream side in the first rotation direction than the facing position, and guides the developer from the storing portion to the developing roller side.

Abstract translation: 显影装置包括存储部分，搅拌部件，显影辊，屏蔽板和引导部分。 存储部存储显影剂。 搅拌构件可旋转地设置在存储部分中，并通过沿预定的第一旋转方向旋转驱动来搅动存储部分中的显影剂。 显影辊可旋转地设置在搅拌构件上方，具有通过磁力吸引存储部中的显影剂的磁体，并且以预定的第二旋转方向旋转驱动。 屏蔽板由非磁性材料制成，并且设置在显影辊和搅拌构件彼此面对的相对位置处。 引导部分在第一旋转方向的上游侧比面对位置更多地设置，并且将显影剂从存储部分引导到显影辊侧。

公开(公告)号：US09235163B2

公开(公告)日：2016-01-12

申请号：US14501886

申请日：2014-09-30

Applicant: KYOCERA Document Solutions Inc.

Inventor： Minoru Wada ,  Takefumi Yotsutsuji

IPC: G03G15/08 ,  G03G15/09

CPC classification number: G03G15/0921 ,  G03G15/0893 ,  G03G15/0928

Abstract: A development device includes a development case, a first agitating/conveying member and a second agitating/conveying member. The first agitating/conveying member is arranged below the second agitating/conveying member to convey the developer in a first direction. The second agitating/conveying member conveys the developer in a second direction as an opposite direction to the first direction to supply the developer to the developer carrier. The development case includes a first conveyance chamber, a second conveyance chamber, a first communicating portion communicating end parts of the first conveyance chamber and second conveyance chamber in the first direction, and a second communicating portion communicating end parts of the first conveyance chamber and second conveyance chamber in the second direction. The developer carrier has a first ferromagnetic area having magnetic force stronger than another area of the developer carrier, in which the first ferromagnetic area corresponds to the first communicating portion.

Abstract translation: 显影装置包括显影盒，第一搅拌/输送构件和第二搅拌/输送构件。 第一搅拌/输送构件布置在第二搅拌/输送构件下方以沿第一方向输送显影剂。 第二搅拌/输送构件沿与第一方向相反的方向沿第二方向输送显影剂，以将显影剂供应至显影剂载体。 显影箱包括第一输送室，第二输送室，第一输送室和第二输送室的端部沿第一方向连通的第一连通部，以及连通第一输送室的端部和第二输送室的第二连通部 输送室在第二方向。 显影剂载体具有第一铁磁区域，其具有比显影剂载体的另一区域更强的磁力，其中第一铁磁区域对应于第一连通部分。