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公开(公告)号：US12032315B2
公开(公告)日：2024-07-09
申请号：US18072643
申请日：2022-11-30
Applicant: KONICA MINOLTA, INC.
Inventor： Shohei Dokiya , Daisuke Kobayashi , Masahiko Takahashi , Takaki Uemura , Makoto Ooki , Takafumi Yuasa
IPC: G03G15/00
CPC classification number: G03G15/5029
Abstract: A technology aimed at improvement of paper discriminating accuracy is provided. In an image forming apparatus, a control unit derives a discriminating result for types of paper. To be specific, the control unit derives the discriminating result for types of paper using a first detection value based on absorption by the paper of the light having the first wavelength and a second detection value based on absorption by the paper of the light having the second wavelength. The first wavelength ranges from 750 nm to 1100 nm. The second wavelength ranges from 400 nm to 500 nm.
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公开(公告)号：US20190286006A1
公开(公告)日：2019-09-19
申请号：US16355342
申请日：2019-03-15
Applicant: Konica Minolta, Inc.
Inventor： Takafumi Yuasa , Hidenari Tachibe , Masayuki Iijima , Makoto Obayashi , Wataru Senoo
IPC: G03G15/043 , G02B26/12 , G02B27/09 , G02B27/30 , G03G15/04
Abstract: An optical scanning device that scans a photoreceptor with light, the device includes: a light emitter that emits light according to a supply current amount; a source-side optical system that includes an optical element corresponding to the light emitter, the optical element transmitting and shaping the light emitted from the corresponding light emitter; a polygon mirror that cyclically deflects the light shaped by the source-side optical system; an image-side optical system that condenses the light deflected by the polygon mirror on a surface of the photoreceptor; a motor that rotates the polygon mirror; and a light source controller that: monitors a temperature of the optical element; and adjusts the supply current amount for the light emitter or adjusts the temperature of the optical element corresponding to the light emitter to make a temperature difference between the light emitter and the corresponding optical element fall within an allowable range.
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公开(公告)号：US11906919B2
公开(公告)日：2024-02-20
申请号：US17737517
申请日：2022-05-05
Applicant: Konica Minolta, Inc.
Inventor： Shohei Dokiya , Daisuke Kobayashi , Masahiko Takahashi , Makoto Ooki , Takafumi Yuasa , Takaki Uemura
IPC: G03G15/00
CPC classification number: G03G15/5029
Abstract: A recording medium determination device includes a light emitter, a light detector, and a hardware processor. The light emitter emits inspection light to a recording medium. The light detector detects incident light including at least one of diffuse reflected light of the inspection light emitted to the recording medium and fluorescent light excited by the inspection light in the recording medium. The hardware processor makes a determination depending on a property of the recording medium based on a detection result of first incident light of the incident light in accordance with first inspection light of the inspection light and second incident light of the incident light in accordance with second inspection light of the inspection light obtained by the light detector. The second inspection light has an intensity whose peak wavelength is shorter than the peak wavelength of the first inspection light.
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公开(公告)号：US11169480B2
公开(公告)日：2021-11-09
申请号：US17004535
申请日：2020-08-27
Applicant: Konica Minolta, Inc.
Inventor： Takafumi Yuasa , Masahiko Takahashi , Daisuke Kobayashi
IPC: G03G15/00
Abstract: A holder includes first and second attachments to be attached to an attachment target part of an image formation apparatus. The first attachment is located on a reflection light source side relative to a sensor in a direction of a line connecting the sensor and a reflection light source of the image formation apparatus The second attachment is located on an opposite side to the reflection light source relative to the sensor in the line direction. A holder includes first, second, and third attachments to be attached to an attachment target part of an image formation apparatus. The three attachments are elastically deformable portions. The first and second attachments are provided on one end side of the holder. The third attachment is provided on other end side of the holder. The three attachments are provided as to clamp the attachment target part by using resilience associated with elastic deformation.
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公开(公告)号：US10534298B2
公开(公告)日：2020-01-14
申请号：US15641531
申请日：2017-07-05
Applicant: Konica Minolta, Inc.
Inventor： Masahiko Takahashi , Makoto Ooki , Wataru Senoo , Atsushi Nagaoka , Hidenari Tachibe , Hajime Taniguchi , Takafumi Yuasa , Yoshitaka Otani
Abstract: In a displacement sensor, an illumination optical system, which converts laser light emitted from an emission unit into first converging light, and irradiates with the first converging light a detection space through which a target moves. An imaging optical system converts laser light reflected from the target into second converging light, and irradiates with the second converging light a light-receiving surface of a detection unit. The image of the emission unit into which the illumination optical system focuses the first converging light is displaced along the optical axis of the imaging optical system by a temperature change of the illumination optical system. The range in which the image is displaced is limited to be located either anterior to the front principal point of the imaging optical system, or posterior to the rear principal point of the imaging optical system.
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Patent Agency Ranking
公开(公告)号：US10281875B2
公开(公告)日：2019-05-07
申请号：US15902563
申请日：2018-02-22
Applicant: Konica Minolta, Inc.
Inventor： Hidenari Tachibe , Akira Taniyama , Takafumi Yuasa
Abstract: A print head includes a platform with a face whose portion covered with a heat conductor includes a heat release section, which is deformed relative to a substantially flat portion of the face of the platform to be located at a smaller distance from the surface of the chip in a direction normal to the face at a side near to the light emission area in the longitudinal direction of the light source panel than at another side far from the light emission area. Alternatively, the heat conductor, when disconnected from the face of the platform, is thicker at a side near to the light emission area in the longitudinal direction of the light source panel than at another side far from the light emission area.
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公开(公告)号：US10254675B2
公开(公告)日：2019-04-09
申请号：US15926304
申请日：2018-03-20
Applicant: Konica Minolta, Inc.
Inventor： Takafumi Yuasa , Akira Taniyama , Hidenari Tachibe
Abstract: An optical writing apparatus includes: a light source panel including light emitting elements arranged on an elongate glass substrate; an optical member that causes emergent light to form an image; a first holding member holding the optical member; and a second holding member holding the glass substrate, wherein legs are provided below the first holding member on sides of both ends, the legs extending downward, drooping ends of the legs being mounted and fixed on the second holding member, one end of the glass substrate is positioned inside the space, an integrated circuit being provided, a through hole is provided to an upper surface of the second holding member, and when cooling air for the integrated circuit flows into the space, the cooling air is guided through the through hole to a side of a lower surface of the upper surface of the second holding member.
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公开(公告)号：US12216424B2
公开(公告)日：2025-02-04
申请号：US18227017
申请日：2023-07-27
Applicant: KONICA MINOLTA, INC.
Inventor： Daisuke Kobayashi , Shohei Dokiya , Makoto Ooki , Takafumi Yuasa , Takaki Uemura , Masahiko Takahashi
IPC: G03G15/00
Abstract: A sheet type discrimination device includes: a first light source unit that irradiates a sheet with light having a first wavelength and light having a second wavelength; a detection unit that detects light from the sheet and acquires a detection value based on the light; and a control unit that derives a determination result of a type of the sheet, wherein the first light source unit and the detection unit are located on a same side with respect to the sheet, the detection value includes: a first detection value; and a second detection value, and the control unit discriminates first-type recycled paper by first processing using the first detection value, and discriminates second-type recycled paper different from the first-type recycled paper by second processing using the second detection value.
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公开(公告)号：US10809643B2
公开(公告)日：2020-10-20
申请号：US16355342
申请日：2019-03-15
Applicant: Konica Minolta, Inc.
Inventor： Takafumi Yuasa , Hidenari Tachibe , Masayuki Iijima , Makoto Obayashi , Wataru Senoo
IPC: G03G15/043 , G02B26/12 , G03G15/04 , G02B27/30 , G02B27/09
Abstract: An optical scanning device that scans a photoreceptor with light, the device includes: a light emitter that emits light according to a supply current amount; a source-side optical system that includes an optical element corresponding to the light emitter, the optical element transmitting and shaping the light emitted from the corresponding light emitter; a polygon mirror that cyclically deflects the light shaped by the source-side optical system; an image-side optical system that condenses the light deflected by the polygon mirror on a surface of the photoreceptor; a motor that rotates the polygon mirror; and a light source controller that: monitors a temperature of the optical element; and adjusts the supply current amount for the light emitter or adjusts the temperature of the optical element corresponding to the light emitter to make a temperature difference between the light emitter and the corresponding optical element fall within an allowable range.
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公开(公告)号：US10434794B2
公开(公告)日：2019-10-08
申请号：US15902644
申请日：2018-02-22
Applicant: Konica Minolta, Inc.
Inventor： Takafumi Yuasa , Akira Taniyama , Hidenari Tachibe
Abstract: An optical print head, including: an elongated substrate having a line-shaped region in which light-emitting elements are arranged; an optical member condensing light from the light-emitting elements onto an irradiation target; a holding member holding the optical member; a base member holding the substrate and the holding member; an integrated circuit mounted in a first region in proximity of an end in a longitudinal direction of the substrate on a first surface of the substrate facing the base member, heat being generated in the integrated circuit during optical writing; and a thermally conductive member between the integrated circuit and the base member. In the optical print head, the holding member has a support portion contacting the substrate in a second region at a position differing from the first region in plan view on a second surface of the substrate not facing the base member.
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