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公开(公告)号：US20250100297A1
公开(公告)日：2025-03-27
申请号：US18895320
申请日：2024-09-24
Applicant: KYOCERA Document Solutions Inc.
Inventor： Nobuhiro MAEZAWA
IPC: B41J11/00 , B41J2/14 , B41J25/308
Abstract: An inkjet image forming apparatus include a head unit and a corona treatment unit. The head unit ejects ink on a printing base material conveyed in a predetermined conveyance direction. The corona treatment unit is disposed on an upstream side of the head unit in the conveyance direction and performs a corona discharge on the printing base material. The corona treatment unit includes a counter roller facing a corona discharge electrode. The counter roller has an inverted crown shape in which a diameter of a central portion is smaller than diameters of both end portions in a width direction crossing the conveyance direction.
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公开(公告)号：US20220365461A1
公开(公告)日：2022-11-17
申请号：US17764694
申请日：2021-01-13
Applicant: KYOCERA Document Solutions Inc.
Inventor： Nobuhiro MAEZAWA
IPC: G03G15/08
Abstract: A developing device capable of stably collecting untransferred toner collected from the photoconductor drum to the developing roller to the feed roller and suppressing occurrence of development ghosts, and an image forming apparatus including the same are provided. A developing device has a developing roller facing a photoconductor drum, a feed roller, and a restriction blade. The feed roller forms a feed nip part with the developing roller by contacting with the circumferential surface of the developing roller, and collects toner from the developing roller while feeding the toner to the developing roller. The Asker-C hardness of the developing roller is in the range of 50 to 80, both inclusive, the width of the feed nip part is in the range of 0.2 to 1.5 mm, both inclusive, and a compressive load to be applied to the feed roller is in the range of 0.2 to 1.5N, both inclusive.
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公开(公告)号：US20250100296A1
公开(公告)日：2025-03-27
申请号：US18893900
申请日：2024-09-23
Applicant: KYOCERA Document Solutions Inc.
Inventor： Nobuhiro MAEZAWA
Abstract: An ink jet image forming apparatus includes a head unit, a corona treatment unit, and a control part. The head unit ejects ink on a printing base material conveyed in a predetermined conveyance direction. The corona discharge treatment unit is disposed on an upstream side of the head unit in the conveyance direction and performs a corona discharge on the printing base material. The control part controls a discharge amount of the corona discharge performed by the corona discharge treatment unit. The control part controls the discharge amount based on a glossiness of the printing base material.
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公开(公告)号：US20220019155A1
公开(公告)日：2022-01-20
申请号：US17373076
申请日：2021-07-12
Applicant: KYOCERA Document Solutions Inc.
Inventor： Nobuhiro MAEZAWA
IPC: G03G15/08
Abstract: 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. The supply roller includes a metal shaft member and a cylindrical formed elastic body, and supplies the toner to the development roller and collects the toner from the development roller. The supply roller has an electric resistance within a range of 1×102Ω or more and 1×104Ω or less. The supply roller comes into contact with the circumferential face of the development roller in a state where a compression load within a range of 0.2 N or more and 1.5 N or less is applied to the shaft member of the supply roller in a direction perpendicular to an axial direction of the shaft member.
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公开(公告)号：US20250010613A1
公开(公告)日：2025-01-09
申请号：US18764132
申请日：2024-07-03
Applicant: KYOCERA Document Solutions Inc.
Inventor： Nobuhiro MAEZAWA
Abstract: An image forming apparatus includes an ink head unit, a precoating head unit, and a control part. The ink head unit ejects ink to a printing base material conveyed along a predetermined conveying direction. The precoating liquid head unit is disposed on an upstream side of the ink head unit in the conveying direction and ejects precoating liquid to the printing base material. The control part controls the precoating liquid head unit so as to eject the precoating liquid. When a surface tension of the recording base material is smaller than a predetermined value, the control part controls the precoating liquid head unit to eject a predetermined amount of the precoating liquid.
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Patent Agency Ranking
公开(公告)号：US20240383264A1
公开(公告)日：2024-11-21
申请号：US18662977
申请日：2024-05-13
Applicant: KYOCERA Document Solutions Inc.
Inventor： Nobuhiro MAEZAWA
Abstract: An inkjet recording apparatus includes an ink head unit, a precoating head unit, a conveying plate, and a heating part. The ink head unit ejects ink to a printing base material conveyed along a predetermined conveying direction. The precoating liquid head unit is disposed on an upstream side of the ink head unit in the conveying direction and ejects precoating liquid to the printing base material. The conveying plate is disposed below the ink head unit and the precoating liquid head unit and on which the printing base material is conveyed. The heating part heats the conveying plate. When a temperature of the conveying plate below the precoating liquid head unit is set to T1, and a temperature of the conveying plate below the ink head unit is set to T2, the heating part heats the conveying plate such that T1 is less than T2.
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公开(公告)号：US20240383261A1
公开(公告)日：2024-11-21
申请号：US18660180
申请日：2024-05-09
Applicant: KYOCERA Document Solutions Inc.
Inventor： Nobuhiro MAEZAWA
Abstract: An inkjet recording apparatus includes an ink head unit, a precoating liquid head unit, and a control part. The ink head unit ejects ink to a printing base material conveyed along a predetermined conveying direction. The precoating liquid head unit is disposed on an upstream side of the ink head unit in the conveying direction and ejects precoating liquid to the printing base material. The control part controls the precoating liquid head unit to eject the precoating liquid. The control part controls the precoating liquid head unit to eject a predetermined amount of the precoating liquid when a glossiness of the printing base material is a predetermined value or more.
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公开(公告)号：US20250108627A1
公开(公告)日：2025-04-03
申请号：US18888788
申请日：2024-09-18
Applicant: KYOCERA Document Solutions Inc.
Inventor： Nobuhiro MAEZAWA
Abstract: An inkjet image forming apparatus includes an image part, a precoating unit, and a control part. The image forming part ejects ink on a printing base material conveyed in a predetermined conveyance direction, based on image data to form an image. The precoating unit is arranged on an upstream side of the image forming part in the conveyance direction, and performs a precoating treatment in which a precoating liquid is ejected on the printing base material. The control part controls an amount of the precoating liquid ejected by the precoating unit. The control part increases an amount of the precoating liquid ejected to a region where adjacent pixels have different color compared with an amount of the precoating liquid ejected to a region where adjacent pixels have the same color.
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公开(公告)号：US20190049876A1
公开(公告)日：2019-02-14
申请号：US16038954
申请日：2018-07-18
Applicant: KYOCERA Document Solutions Inc.
Inventor： Nobuhiro MAEZAWA
IPC: G03G15/08
Abstract: A development device includes a developer carrier, a blade and a cover. The developer carrier carries a developer containing a toner. The blade regulates a thickness of the developer carried on the developer carrier. The cover includes a cover main body covering an outer side of the blade and a facing rib protruding from an inner face of the cover main body and facing the developer carrier at an interval. A storage space to store the toner which contacts the facing rib and falls is formed below the facing rib.
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公开(公告)号：US20230266694A1
公开(公告)日：2023-08-24
申请号：US18005173
申请日：2021-07-12
Applicant: KYOCERA Document Solutions Inc.
Inventor： Nobuhiro MAEZAWA
CPC classification number: G03G15/0808 , G03G21/0088 , G03G15/2028 , G03G2215/066 , G03G2215/025
Abstract: A developing device (33) includes a developing roller (331) disposed so as to face a photosensitive drum (31), a supply roller (332) and a layer thickness regulating member (334). The supply roller (332) supplies the toner to the developing roller (331) while collecting the toner from the developing roller (331). The layer thickness regulating member (334) has a fixed end portion (334T), a base side straight portion (A), a tip side straight portion (B), a first arc portion (C) and a second arc portion (D). The radius of curvature of the second arc portion (D) is set to be smaller than that of the first arc portion (C).
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