公开(公告)号：US20230185223A1

公开(公告)日：2023-06-15

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 mn

公开(公告)号：US20210063938A1

公开(公告)日：2021-03-04

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.

公开(公告)号：US20240069478A1

公开(公告)日：2024-02-29

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

CPC classification number: G03G15/5029

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.

公开(公告)号：US20180157190A1

公开(公告)日：2018-06-07

申请号：US15816987

申请日：2017-11-17

Applicant: Konica Minolta, Inc.

Inventor： Daisuke KOBAYASHI ,  Takashi KUROSAWA ,  Naoki TAJIMA ,  Makoto OOKI ,  Hideo UEMURA

IPC: B41J2/385

CPC classification number: G03G15/04036 ,  G03G15/0415

Abstract: A scanning optical apparatus includes a light source, a deflector and an imaging optical system. The deflector deflects a beam emitted from the light source to scan a scanning surface with the beam in a main scanning direction. The imaging optical system focuses the beam on the scanning surface. The imaging optical system includes a first lens having negative power in a sub scanning direction and a second lens having positive power in the sub scanning direction, in which the sub scanning direction is parallel to the scanning surface and perpendicular to the main scanning direction. The power φ1 of the first lens, the power φ2 of the second lens and a magnification β in the sub scanning direction of the imaging optical system satisfy the conditions −1.2≤φ1/φ2≤−0.9 and −1.3≤β≤−0.8.

公开(公告)号：US20220373953A1

公开(公告)日：2022-11-24

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

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.

公开(公告)号：US20180231911A1

公开(公告)日：2018-08-16

申请号：US15875697

申请日：2018-01-19

Applicant: Konica Minolta, Inc.

Inventor： Takashi KUROSAWA ,  Naoki TAJIMA ,  Daisuke KOBAYASHI

IPC: B41J2/385

CPC classification number: G03G15/043 ,  G03G15/0189 ,  G03G15/0409 ,  G03G15/55

Abstract: Provided is an image writing device including a deflector having deflective reflection surfaces for deflecting light flux emitted from a light source and a scanning imaging optical system that condenses the light flux as a light spot on a scanned surface of a latent image carrier, and performing optical scanning on the scanned surface at a constant speed, the image writing device further including: a surface detector that detects a deflective reflection surface that deflects the light flux; a storage that prestores a beam irradiation position in a sub scanning direction corresponding to each main image height on each of the deflective reflection surfaces; and a hardware processor that controls, on the basis of a beam irradiation position in the sub scanning direction corresponding to each main image height on the deflective reflection surface a light quantity of the light flux to be irradiated to the beam irradiation position.