公开(公告)号：US20190187601A1

公开(公告)日：2019-06-20

申请号：US16212684

申请日：2018-12-07

Applicant: KONICA MINOLTA, INC.

Inventor： Hirotada SEKI ,  Hiroshi EGUCHI ,  Natsuyo IDA ,  Junichi MASUDA ,  Masahiro NONOYAMA ,  Akimasa ISHIKAWA

IPC: G03G15/00 ,  H04R1/08

CPC classification number: G03G15/55 ,  G03G21/0011 ,  H04R1/08

Abstract: An abnormality determination apparatus includes: an audio data acquisitor that acquires audio data of an apparatus to be judged for determining presence or absence of abnormality; an abnormal sound detector that detects an abnormal sound based on the audio data acquired by the audio data acquisitor; and a hardware processor that determines whether the abnormal sound is such a sound that an operation of the apparatus to be judged should be restricted based on a subsequent secular change of the abnormal sound when the abnormal sound is detected by the abnormal sound detector, and restricts the operation of the apparatus to be judged when the hardware processor determines that the abnormal sound is such a sound that the operation of the apparatus to be judged should be restricted.

公开(公告)号：US20220011703A1

公开(公告)日：2022-01-13

申请号：US17347178

申请日：2021-06-14

Applicant: KONICA MINOLTA, INC.

Inventor： Atsushi TAKAHASHI ,  Hitoshi ASANO ,  Yumiko IZUMIYA ,  Hirotada SEKI ,  Akimasa ISHIKAWA

IPC: G03G15/00

Abstract: A glossiness inspection device includes: an illumination device that emits irradiation light; a light receiving device that receives reflected light of the irradiation light reflected by a glossiness detection target and outputs a light reception detection signal according to an amount of the received light; a correction plate that includes at least a first gloss region and a second gloss region; a dimmer that adjusts an amount of the irradiation light; a detection signal adjuster that adjusts a gain for amplifying the light reception detection signal; an irradiation position controller that selectively irradiates the first gloss region and the second gloss region with the irradiation light; and a hardware processor that adjusts at least one of the amount of the irradiation light, an offset of the detection signal adjuster, a characteristic straight line for calculating a glossiness, or a calculated glossiness.

公开(公告)号：US20220191340A1

公开(公告)日：2022-06-16

申请号：US17513778

申请日：2021-10-28

Applicant: KONICA MINOLTA, INC.

Inventor： Hirotada SEKI ,  Hitoshi ASANO ,  Yumiko IZUMIYA ,  Akimasa ISHIKAWA ,  Kazutoshi YOSHIMURA ,  Yasuo KOYANAGI

IPC: H04N1/00

Abstract: To provide a sheet conveyance device capable of preventing degradation in quality of conveying a sheet and image quality even when a stiffness of the sheet is different between a sheet conveyance direction and a sheet width direction. A sheet conveyance device of an image forming apparatus includes an image forming part that conveys a sheet along a conveyance path; and a stiffness acquisition part that acquires a stiffness of the sheet in a first direction including a component in the sheet conveyance direction by bending the sheet in the first direction, and acquires a stiffness of the sheet in a second direction including a component in the sheet width direction orthogonal to the sheet conveyance direction by bending the sheet in the second direction.

公开(公告)号：US20220185615A1

公开(公告)日：2022-06-16

申请号：US17529414

申请日：2021-11-18

Applicant: KONICA MINOLTA, INC.

Inventor： Atsushi TAKAHASHI ,  Hitoshi ASANO ,  Yumiko IZUMIYA ,  Hirotada SEKI ,  Akimasa ISHIKAWA

IPC: B65H43/00 ,  B65H11/00

Abstract: An image forming apparatus includes an image former that forms an image on a sheet of paper, a detector that detects a physical property of a sheet of paper, a receiver that receives paper identification information used in identification of a sheet of paper designated by a user, and a hardware processor. The hardware processor performs: first judgement of judging whether or not there is a correspondence between the paper identification information received by the receiver and a detection result by the detector, second judgement of judging whether or not there is a correspondence between a detection result by the detector of a first sheet of paper conveyed and a detection result by the detector of a second sheet of paper conveyed; and operation control of the image former based on a first judgement result in the first judgement and a second judgement result in the second judgement.

公开(公告)号：US20220390889A1

公开(公告)日：2022-12-08

申请号：US17743577

申请日：2022-05-13

Applicant: KONICA MINOLTA, INC.

Inventor： Akimasa ISHIKAWA ,  Hitoshi ASANO ,  Yumiko IZUMIYA ,  Hirotada SEKI ,  Kazutoshi YOSHIMURA ,  Yasuo KOYANAGI

IPC: G03G15/00

Abstract: Provided are an image forming system and a method for detecting glossiness capable of accurately detecting glossiness in various media having different conditions.
The image forming system includes a sensor unit including a light source that irradiates a medium being conveyed with light and a gloss sensor that receives light emitted from the light source and specularly reflected on the medium and detects a diffusion distribution of light in the medium, and a detection condition setting unit that identifies a type of the medium being conveyed and sets a light amount of the light source and/or exposure time of the gloss sensor at the time of glossiness detection in accordance with the type of the medium. The image forming system further includes a glossiness detector that detects glossiness of the medium from a diffusion distribution of light detected by the gloss sensor under the detection condition set by the detection condition setting unit.

公开(公告)号：US20200255239A1

公开(公告)日：2020-08-13

申请号：US16741922

申请日：2020-01-14

Applicant: KONICA MINOLTA, INC.

Inventor： Yumiko IZUMIYA ,  Satoshi OGATA ,  Kazutoshi YOSHIMURA ,  Hitoshi ASANO ,  Hirotada SEKI ,  Akimasa ISHIKAWA

IPC: B65H5/06 ,  B65H7/02 ,  B65H5/16

Abstract: A measuring device, includes a physical property value detector and a push contact member that pushes to bring a sheet material in contact with the physical property value detector; and further includes a first processor that stops conveyance of the sheet material, pushes to bring the sheet material in contact with the physical property value detector, and detects a physical property value of the sheet material; a second processor that, after having detected the physical property value, cancels the pushing by the push contact member, separates the sheet material from the physical property value detector, and starts conveyance of the sheet material; and a physical property value specifier that specifies the physical property value on a basis of physical property values of a plurality of positions within a surface of the sheet material detected by executing the first processing and the second processing repeatedly.

公开(公告)号：US20210325810A1

公开(公告)日：2021-10-21

申请号：US17218634

申请日：2021-03-31

Applicant: KONICA MINOLTA, INC.

Inventor： Akimasa ISHIKAWA ,  Atsushi TAKAHASHI ,  Hitoshi ASANO ,  Yumiko IZUMIYA ,  Hirotada SEKI

IPC: G03G15/00

Abstract: The present invention is directed to detect gloss of a toner image from which the influence of heat applied to a sheet by a fixing unit is eliminated. An image forming device according to an aspect of the invention includes: a gloss sensor irradiating a recording medium on which a toner image is formed and fixed with light, measuring reflectance of reflection light from the recording medium, and measuring gloss of the toner image on the basis of the reflectance; and a gloss correcting unit correcting the gloss of the toner image measured by the gloss sensor in a situation that the temperature of the toner image fixed on the recording medium is assumed to be higher than a predetermined threshold temperature or in the case where it is determined that the temperature of the toner image is higher than the predetermined threshold temperature.