公开(公告)号：US20210405568A1

公开(公告)日：2021-12-30

申请号：US17351577

申请日：2021-06-18

Applicant: Konica Minolta, Inc.

Inventor： Keiki KATSUMATA ,  Kazutoshi KOBAYASHI ,  Tomohiro KAWASAKI ,  Kei OKAMURA

IPC: G03G15/00 ,  G06F11/07

Abstract: An operation status prediction system includes a hardware processor. The hardware processor acquires data, which is relevant to an operation status at each timing of an operation device to be monitored, so as to be associated with information of the timing. The hardware processor predicts a future operation status according to the acquired operation status for each of a plurality of periods having different lengths from the present.

公开(公告)号：US20210364968A1

公开(公告)日：2021-11-25

申请号：US17320702

申请日：2021-05-14

Applicant: Konica Minolta, Inc.

Inventor： Kazutoshi KOBAYASHI ,  Tomohiro KAWASAKI ,  Keiki KATSUMATA ,  Kei OKAMURA

IPC: G03G15/00 ,  G03G15/08

Abstract: Provided is an image forming apparatus including a developer that performs development with toner, the image forming apparatus including a vibrator that applies vibrations to a vibrated portion of the developer, and a hardware processor that controls the vibrator. The hardware processor determines a toner leakage level based on a result of detecting toner leakage adhering to a sheet caused by the image forming apparatus, settles a vibrating condition of the vibrator in accordance with the toner leakage level, and causes the vibrator to perform a vibrating operation under the settled vibrating condition.

公开(公告)号：US20230185227A1

公开(公告)日：2023-06-15

申请号：US18064490

申请日：2022-12-12

Applicant: KONICA MINOLTA, INC.

Inventor： Taiki AMEMIYA ,  Kazutoshi KOBAYASHI ,  Yukio HOSOYA ,  Seijiro TAKAHASHI ,  Tomoko SAKIMURA ,  Kazukuni NISHIMURA

IPC: G03G15/00 ,  G03G21/00 ,  G03G8/00

CPC classification number: G03G15/6597 ,  G03G21/0011 ,  G03G8/00 ,  G03G2215/00518

Abstract: An electrophotographic image forming system forms an electrostatic latent image on at least a photoreceptor, develops an image using an electrostatic charge image developing toner, and removes the toner using a cleaning blade. A tip ridge of the cleaning blade is pressed against a surface of the photoreceptor. The system includes a photosensitive layer of the photoreceptor and a surface protecting layer that is provided on a surface of the photosensitive layer. The surface protecting layer includes a polymerizable monomer having at least two polymerizable groups in a molecule and a polymer of a hole transporting compound having a polymerizable group represented by General formula (1). The tip ridge of the cleaning blade has an edge angle that is obtuse and less than 120° and is pressed against the surface of the photoreceptor at an effective contact angle that is in a range of 8 to 20°.

公开(公告)号：US20210364967A1

公开(公告)日：2021-11-25

申请号：US17319009

申请日：2021-05-12

Applicant: Konica Minolta, Inc.

Inventor： Tomohiro KAWASAKI ,  Hiroyuki SAITO ,  Kazutoshi KOBAYASHI ,  Keiki KATSUMATA ,  Kei OKAMURA

IPC: G03G15/00

Abstract: An image forming apparatus includes: an image carrier; an exposing device; a developing device with a developing roller; a development current detector that detects development current between the image carrier and the developing roller; and a hardware processor. Under an image forming condition, the hardware processor causes the exposing device to draw, on the image carrier, a development current-detection pattern that includes a solid image and a halftone image that follows the solid image in an image-conveying direction of the image carrier, causes the developing device to develop the development current-detection pattern, obtains information on a chronological change of the detected development current from the development current detector, and determines whether or not a ghost image due to the solid image occurs based on a temporary drop of the detected development current during development of the halftone image.

公开(公告)号：US20240345504A1

公开(公告)日：2024-10-17

申请号：US18610910

申请日：2024-03-20

Applicant: Konica Minolta, Inc.

Inventor： Kazutoshi KOBAYASHI ,  Yukio HOSOYA ,  Toshiyuki FUJITA ,  Akihiko ITAMI

IPC: G03G15/08

CPC classification number: G03G15/0808 ,  G03G2215/0861

Abstract: A developing sleeve for an electrophotographic image forming apparatus includes an aluminum alloy containing more than 0.6% by mass of silicon and conveys a developer containing a toner and a carrier.

公开(公告)号：US20130315615A1

公开(公告)日：2013-11-28

申请号：US13900154

申请日：2013-05-22

Applicant: Konica Minolta, Inc.

Inventor： Shintaro SONE ,  Hiroyuki SAITO ,  Hisayoshi NAGASE ,  Kazuteru ISHIZUKA ,  Tatsuya FURUTA ,  Kazutoshi KOBAYASHI

IPC: G03G15/02

CPC classification number: G03G15/0258 ,  G03G15/0291 ,  G03G2215/027

Abstract: A charging device has a charging member to charge an object, an applying unit to apply a voltage to the charging member for generating an electric discharge from the charging member, so that the object is discharged by the charging member, a detecting unit to detect an emission of light of the electric discharge, an output unit to output a detection result by the detecting unit, a cleaning unit to clean the charging member, and a controller to control the cleaning unit to clean the charging member when the detection result is out of a predetermined range.

Abstract translation: 充电装置具有用于对物体充电的充电构件，施加单元，用于向充电构件施加电压，用于从充电构件产生放电，使得物体由充电构件放电;检测单元，用于检测 发射放电灯，输出单元，输出检测单元的检测结果;清洁单元，用于清洁充电构件;以及控制器，当检测结果超出时，控制清洁单元清洁充电构件 预定范围。

公开(公告)号：US20210389709A1

公开(公告)日：2021-12-16

申请号：US17327534

申请日：2021-05-21

Applicant: Konica Minolta, Inc.

Inventor： Kei OKAMURA ,  Tomohiro KAWASAKI ,  Kazutoshi KOBAYASHI ,  Keiki KATSUMATA

IPC: G03G15/00

Abstract: An image forming apparatus includes: a developer carrier; a screw-shaped developer feeder that feeds developer to the developer carrier; an image carrier on which an image is imaged with toner of the developer; a developing current detector that detects developing current between the image carrier and the developer carrier during imaging; and a controller that detects image density failure that is periodic and oblique to a rotation direction of the image carrier. The controller causes a stripe image to be imaged on the image carrier and analyzes change of the developing current with time during imaging of the stripe image, thereby detecting the image density failure. The stripe image has a width in a length direction of the image carrier narrower than a period of a blade of the developer feeder and has a length in the rotation direction longer than a period of the image density failure.

公开(公告)号：US20200292967A1

公开(公告)日：2020-09-17

申请号：US16818215

申请日：2020-03-13

Applicant: Konica Minolta, Inc.

Inventor： Kazutoshi KOBAYASHI ,  Junji MURAUCHI ,  Ryoei IKARI ,  Shunichi TAKAYA ,  Kei YUASA

IPC: G03G15/095

Abstract: An image forming apparatus includes an image carrier that carries a toner image, a developer that develops a toner image on the image carrier, with a developing agent containing toner and carrier, a transferor that transfers the toner image being carried by the image carrier, a collection mechanism that collects the carrier on the image carrier by a magnetic force and an electrostatic force, and a hardware processor that controls removal of the toner adhering to the collection mechanism. The collection mechanism includes a collection roller that incorporates a magnet and that is rotatable while facing the image carrier, and a voltage applicator that applies a voltage to the collection roller. The hardware processor performs a toner removal mode to remove the toner, by setting a peripheral speed of at least one of the image carrier and the collection roller to less than a peripheral speed thereof for image formation.