公开(公告)号：US20220191340A1

公开(公告)日：2022-06-16

申请号：US17513778

申请日：2021-10-28

申请人： KONICA MINOLTA, INC.

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

IPC分类号： H04N1/00

摘要： 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：US20240272071A1

公开(公告)日：2024-08-15

申请号：US18430060

申请日：2024-02-01

申请人： Konica Minolta, Inc.

发明人： Akimasa ISHIKAWA ,  Hitoshi ASANO ,  Yumiko IZUMIYA ,  Yasuo KOYANAGI ,  Hiroyuki YOSHIKAWA

IPC分类号： G01N21/47 ,  G01N21/89 ,  G03G15/00 ,  G03G15/16

CPC分类号： G01N21/4738 ,  G03G15/16 ,  G03G15/5029 ,  G01N2021/8917 ,  G03G2215/00751 ,  G03G2215/00772 ,  G03G2215/00776

摘要： A media detection apparatus for detecting moisture information corresponding to a moisture amount or a moisture percentage of a sheet, the media detection apparatus comprising:



a light emitter that emits light;
a light receiver that receives the light reflected off the sheet or transmitted through the sheet; and
a first hardware processor that determines the moisture information on the basis of temperature information corresponding to a temperature of the media detection apparatus and an output of the light receiver.

公开(公告)号：US20240036503A1

公开(公告)日：2024-02-01

申请号：US18220300

申请日：2023-07-11

申请人： KONICA MINOLTA, INC.

发明人： Yasuo KOYANAGI ,  Kazumichi YOSHIDA ,  Yoshihito SASAMOTO ,  Kazutoshi YOSHIMURA

IPC分类号： G03G15/00

CPC分类号： G03G15/5029 ,  G03G2215/00738

摘要： [Problem] To provide a stiffness measuring device capable of highly accurately measuring the stiffness of a recording material such as a sheet, and an image forming system equipped with the stiffness measuring device.
[Solution] A stiffness measuring device includes a holding portion that holds a recording material so that a recording surface of the recording material is substantially parallel to a vertical direction, a pressing portion, and a stiffness acquiring section. The pressing portion presses a measurement point located on a lower side in the vertical direction than the portion of the recording material held by the holding portion. The stiffness acquiring section measure a reaction force obtained when the measurement point is pressed by the pressing portion and acquires the measured reaction force as the stiffness of the recording material.

公开(公告)号：US20220390889A1

公开(公告)日：2022-12-08

申请号：US17743577

申请日：2022-05-13

申请人： KONICA MINOLTA, INC.

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

IPC分类号： G03G15/00

摘要： 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.