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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
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 )
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公开(公告)号：US20140233973A1
公开(公告)日：2014-08-21
申请号：US14181370
申请日：2014-02-14
Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
Inventor： Eiji GYOTOKU , Jun NAKAI , Masahito ISHINO
IPC: G03G15/00
CPC classification number: G03G21/0064 , G03G21/0094 , G03G21/20
Abstract: An image forming apparatus includes a heating element, an interior temperature/humidity detection section, and a controller. The heating element is conducted during connection of the image forming apparatus to an external power source to heat an image bearing member. The interior temperature/humidity detection section detects temperature and humidity in the interior of the image forming apparatus. The controller performs a refresh operation when a relative humidity calculated on the basis of the temperature and humidity detected by the interior temperature/humidity detection section immediately after the image forming apparatus is connected to the external power source is higher than the preset value. The refresh operation is an operation for supply of developer from a development device to the image bearing member and for polish of the surface of the image bearing member with the use of a polishing member.
Abstract translation: 图像形成装置包括加热元件，内部温度/湿度检测部和控制器。 在图像形成装置连接到外部电源以加热图像承载部件时，加热元件被传导。 内部温度/湿度检测部分检测图像形成装置内部的温度和湿度。 当在图像形成装置刚刚连接到外部电源之后，基于由内部温度/湿度检测部检测到的温度和湿度计算的相对湿度高于预设值时，控制器执行刷新操作。 刷新操作是将显影剂从显影装置供应到图像承载部件并且通过使用抛光部件对图像承载部件的表面进行抛光的操作。
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公开(公告)号：US20230305430A1
公开(公告)日：2023-09-28
申请号：US18186050
申请日：2023-03-17
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tomohiro TAMAKI , Takahisa NAKAUE , Masahito ISHINO , Sueaki OKAMOTO
IPC: G03G15/08
CPC classification number: G03G15/0812 , G03G15/0818 , G03G2215/0634
Abstract: A developing device includes a development container, a toner carrier, and a regulation blade. The toner carrier supplies toner contained in the development container to an image carrier in a facing region between the toner carrier and the image carrier. The regulation blade contacts the toner carrier on an upstream side of the facing region in a rotation direction of the toner carrier, and regulates a thickness of a layer of the toner carried on the toner carrier. The regulation blade is formed of a metal material polished in a direction same as a toner moving direction in a contact region between the regulation blade and the toner carrier such that an arithmetic average roughness of a surface of the regulation blade is 0.3 μm or less.
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公开(公告)号：US20200041923A1
公开(公告)日：2020-02-06
申请号：US16505896
申请日：2019-07-09
Applicant: KYOCERA Document Solutions Inc.
Inventor： Masahito ISHINO , Nariaki TANAKA , Toshiki FUJITA , Teppei SHIBUYA , Kiyotaka KOBAYASHI
Abstract: An image forming apparatus includes an image bearing member, a charger, and a cleaning member. The charger charges a circumferential surface of the image bearing member to a positive polarity. The cleaning member is pressed against the circumferential surface of the image bearing member and collects a toner remaining on the circumferential surface of the image bearing member. A linear pressure N of the cleaning member on the circumferential surface of the image bearing member is at least 14 N/m and no greater than 40 N/m. A rebound resilience R of the cleaning member at a temperature of 25° C. is at least 38%. The leaner pressure N and the rebound resilience R satisfy mathematical formula (1A). The image bearing member satisfies mathematical formula (1B) R
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公开(公告)号：US20170146922A1
公开(公告)日：2017-05-25
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
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.
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Patent Agency Ranking
公开(公告)号：US20140233978A1
公开(公告)日：2014-08-21
申请号：US14179234
申请日：2014-02-12
Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
Inventor： Jun NAKAI , Eiji GYOTOKU , Masahito ISHINO
IPC: G03G15/00
CPC classification number: G03G15/50 , G03G15/657 , G03G21/06
Abstract: An image forming apparatus includes an image bearing member, a charging unit, a laser scanning unit, a developing unit, a transfer member, a recording medium conveyance path, a cleaning unit, and a heating element. The recording medium conveyance path includes a resin member that forms a conveyance surface. The resin member has a concave portion at a location closer to the transfer member than to the image bearing member. The heating element for heating the image bearing member is accommodated in the concave portion. The heating element is disposed downstream from the contact point between the image bearing member and the transfer member in the conveyance direction in which a recording medium is conveyed through the recording medium conveyance path. The developing unit is located upstream from the contact point between the image bearing member and the transfer member in the conveyance direction of the recording medium.
Abstract translation: 图像形成装置包括图像承载部件，充电单元，激光扫描单元，显影单元，转印部件，记录介质输送路径，清洁单元和加热元件。 记录介质输送路径包括形成输送面的树脂部件。 树脂构件在比图像承载构件更靠近转印构件的位置处具有凹部。 用于加热图像承载部件的加热元件容纳在凹部中。 加热元件设置在图像承载部件和转印部件之间的接触点的下游，在输送方向上记录介质通过记录介质输送路径传送。 显影单元在记录介质的输送方向上位于图像承载部件和转印部件之间的接触点的上游。
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公开(公告)号：US20240160123A1
公开(公告)日：2024-05-16
申请号：US18502844
申请日：2023-11-06
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tomohiro TAMAKI , Masahito ISHINO
IPC: G03G15/08
CPC classification number: G03G15/0812 , G03G15/0818 , G03G2215/0614 , G03G2215/0863
Abstract: A developing device includes a development container, a developer carrying member, and a regulation blade. The development container is for containing a non-magnetic one-component developer composed only of the toner. The developer carrying member is manufactured by a polishing method and includes a rotary shaft and a roller portion stacked on an outer circumferential surface of the rotary shaft, and a toner layer is formed on the roller portion. The regulation blade contacts the outer circumferential surface of the roller portion so as to regulate a thickness of the toner layer. When ten-point average roughnesses in a circumferential direction and in an axial direction of the roller portion are indicated as Rz1 and Rz2, respectively, Rz1/Rz2≤1.5 is satisfied, and a contact linear pressure of the regulation blade with respect to the roller portion is not less than 15 [N/m] and not more than 40 [N/m].
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公开(公告)号：US20210286276A1
公开(公告)日：2021-09-16
申请号：US17261899
申请日：2019-07-16
Applicant: KYOCERA Document Solutions Inc.
Inventor： Ikuo MAKIE , Masahito ISHINO , Toshiki FUJITA , Teppei SHIBUYA
Abstract: An image forming apparatus includes an image bearing member, a charger, a light exposure device, and a development device. The charger charges a circumferential surface of the image bearing member to a positive polarity. The light exposure device exposes the charged circumferential surface of the image bearing member to light to form an electrostatic latent image on the circumferential surface of the image bearing member. The development device supplies a toner to the electrostatic latent image through application of a developing bias. The developing bias is a voltage of an alternating current voltage superimposed on a direct current voltage. The alternating current voltage has a frequency of 4 kHz or higher and 10 kHz or lower. The image bearing member includes a conductive substrate and a photosensitive layer of a single layer. The image bearing member satisfies formula (1) 0.60 ≦ V ( Q / S ) × ( d / ɛ r · ɛ 0 ) ( 1 )
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公开(公告)号：US20210263434A1
公开(公告)日：2021-08-26
申请号：US17261986
申请日：2019-07-16
Applicant: KYOCERA Document Solutions Inc.
Inventor： Teppei SHIBUYA , Masahito ISHINO , Toshiki FUJITA
Abstract: An image forming apparatus includes an image bearing member, a charger, a light exposure device, a development device, a transfer belt, a primary transfer device, a secondary transfer device, and a cleaning member. The cleaning member is pressed against a circumferential surface of the image bearing member and collects residual toner remaining on the circumferential surface of the image bearing member as a result of primary transfer of a toner. The transfer belt has a surface resistivity of at least 6 Log Ω and no greater than 11 Log Ω. A linear pressure of the cleaning member on the circumferential surface of the image bearing member is at least 10 N/m and no greater than 40 N/m. The image bearing member includes a conductive substrate and a photosensitive layer of a single layer. The image bearing member satisfies formula (1): 0.60 ≦ V ( Q / S ) × ( d / ɛ r · ɛ 0 ) ( 1 )
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公开(公告)号：US20210026269A1
公开(公告)日：2021-01-28
申请号：US16932191
申请日：2020-07-17
Applicant: KYOCERA Document Solutions Inc.
Inventor： Masahito ISHINO , Keiya NISHIMURA , Yoshitaka IMANAKA , Toshiki FUJITA
Abstract: An image forming apparatus includes an image bearing member and a charging roller that charges a circumferential surface of the image bearing member to a positive polarity. The image bearing member includes a conductive substrate and a photosensitive layer of a single layer, and satisfies formula (1) shown below. The photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. 0.60 ≦ V ( Q / S ) × ( d / ɛ r · ɛ 0 ) ( 1 ) In formula (1), Q represents a charge amount [C] of the circumferential surface of the image bearing member, S represents a charge area [m2] of the charged circumferential surface of the image bearing member, d represents a film thickness [m] of the photosensitive layer, co represents vacuum permittivity [F/m], and V represents a value calculated in accordance with formula V=V0−Vr.
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