公开(公告)号：US11866292B2

公开(公告)日：2024-01-09

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: B65H7/20 ,  B65H43/00 ,  B65H11/00 ,  G03G15/00

CPC classification number: B65H7/20 ,  B65H11/00 ,  B65H43/00 ,  G03G15/5029 ,  B65H2405/332 ,  B65H2511/13 ,  B65H2511/135 ,  B65H2511/416 ,  B65H2515/10 ,  B65H2515/81 ,  B65H2553/80 ,  B65H2801/06 ,  G03G2215/00447

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：US11221578B2

公开(公告)日：2022-01-11

申请号：US16703238

申请日：2019-12-04

Applicant: Konica Minolta, Inc.

Inventor： Taku Kimura ,  Masahiro Kamiya ,  Junichi Masuda ,  Masahiro Nonoyama ,  Kouei Cho ,  Akimasa Ishikawa

IPC: G03G15/00 ,  B65H9/00 ,  B65H5/06

Abstract: An image forming apparatus includes: a conveyance path that conveys a sheet; registration rollers that are arranged across the conveyance path and each comprise a nip part; a sheet locking member that locks a front end of a sheet conveyed in the conveyance path, where the sheet locking member swings between a first attitude and a second attitude, in the first attitude the sheet locking member locks the sheet on an upstream side of the nip part, and in the second attitude the sheet locking member is retracted to a downstream side of the nip part and allows the sheet to pass through the nip part; an energizer that energizes the sheet locking member to maintain the first attitude; and a hardware processor that detects deterioration of the energizer.

公开(公告)号：US09268250B2

公开(公告)日：2016-02-23

申请号：US14066922

申请日：2013-10-30

Applicant: Konica Minolta, Inc.

Inventor： Akimasa Ishikawa ,  Tatsuya Eguchi ,  Yohei Yamada

IPC: B41J2/435 ,  B41J2/47 ,  G03G15/04 ,  G03G15/043

CPC classification number: G03G15/04072 ,  G03G15/043

Abstract: An image forming apparatus for performing laser exposure is provided. The image forming apparatus includes a driving circuit for supplying drive current to a laser light source in accordance with an image pulse signal; a pulse width expansion portion for expanding a pulse width of the image pulse signal supplied to the driving circuit; and an adjustment control portion for setting, based on state data indicating a state related to light emission start characteristics of the laser light source, a value of the bias current supplied as a part of the drive current to the laser light source and an amount of expansion of the pulse width in such a manner that laser light emission occurs in a period of time having a length equal to a length of a pulse width of each pulse in the image pulse signal.

Abstract translation: 提供了一种用于执行激光曝光的图像形成装置。 图像形成装置包括根据图像脉冲信号向激光光源提供驱动电流的驱动电路; 脉冲宽度扩展部分，用于扩展提供给驱动电路的图像脉冲信号的脉冲宽度; 以及调整控制部分，用于基于指示与激光源的发光开始特性相关的状态的状态数据，将作为驱动电流的一部分提供的偏置电流的值设置到激光光源， 脉冲宽度的扩展使得激光发射在具有等于图像脉冲信号中的每个脉冲的脉冲宽度的长度的时间段内发生。

公开(公告)号：US11533408B2

公开(公告)日：2022-12-20

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: G06K15/00 ,  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：US11286125B2

公开(公告)日：2022-03-29

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：US20210078816A1

公开(公告)日：2021-03-18

申请号：US17020212

申请日：2020-09-14

Applicant: Konica Minolta, Inc.,

Inventor： Yumiko Izumiya ,  Satoshi Ogata ,  Kazutoshi Yoshimura ,  Hitoshi Asano ,  Hirotada Seki ,  Akimasa Ishikawa ,  Masashi Sugano ,  Tsuyoshi Yoneyama ,  Hiroyuki Maruyama

IPC: B65H7/14 ,  B65H29/12 ,  B65H43/08

Abstract: Provided is a recording medium detection device which prevents the decline in productivity. The recording medium detection device comprises a first detecting section and a second detecting section. The first detecting section performs a first adjustment process and makes a detection of a recording medium being transported. The second detecting section is located more downstream than the first detecting section in the transportation direction of the recording medium, performs a second adjustment process which takes a longer time than the first adjustment process, and makes a detection of the recording medium being transported.

公开(公告)号：US11740580B2

公开(公告)日：2023-08-29

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: G03G15/20 ,  G03G15/00

CPC classification number: G03G15/6585 ,  G03G15/5029 ,  G03G15/5062

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：US11507007B2

公开(公告)日：2022-11-22

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 to a glossiness detection target and a light receiving device that receives reflected light of the irradiation light reflected by the glossiness detection target and outputs a light reception detection signal according to an amount of the received light. A dimmer of the device adjusts an amount of the irradiation light, and a detection signal adjuster of the device adjusts a gain for amplifying the light reception detection signal. An irradiation position controller of the device selectively irradiates a first gloss region and a second gloss region of a correction plate with the irradiation light. A hardware processor of the device 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：US09207561B2

公开(公告)日：2015-12-08

申请号：US14490044

申请日：2014-09-18

Applicant: KONICA MINOLTA, INC.

Inventor： Yohei Yamada ,  Tatsuya Eguchi ,  Akimasa Ishikawa

IPC: B41J2/455 ,  B41J2/385 ,  G03G15/043

CPC classification number: G03G15/043

Abstract: An image forming apparatus that forms a color image by layering toner images of different colors includes: a photoreceptor on which an electrostatic latent image is formed through charging and exposure; an exposure unit performing exposure-scanning on the photoreceptor in accordance with image signal; an intensity determination unit determining exposure intensity according to image forming condition; and a timing determination unit determining a timing of inputting image signal for each scanning line, wherein the exposure unit has a delay duration differing depending on the exposure intensity and being from input of image signal of each pixel to be exposed to exposure of the pixel at the exposure intensity, and the timing determination unit obtains the delay duration corresponding to the exposure intensity, and determines the timing such that image signal of an initial pixel to be initially exposed is input the delay duration before the initial pixel is exposed.

Abstract translation: 通过分层不同颜色的调色剂图像形成彩色图像的图像形成装置包括：通过充电和曝光在其上形成静电潜像的感光体; 曝光单元根据图像信号对感光体进行曝光扫描; 强度确定单元，根据图像形成条件确定曝光强度; 以及定时确定单元，确定针对每个扫描线输入图像信号的定时，其中所述曝光单元具有根据所述曝光强度而不同的延迟持续时间，并且来自所述像素的每个像素的图像信号的输入以暴露于所述像素的曝光 曝光强度和定时确定单元获得与曝光强度对应的延迟持续时间，并且确定定时，使得最初曝光的初始像素的图像信号被输入到初始像素曝光之前的延迟持续时间。

公开(公告)号：US20140125751A1

公开(公告)日：2014-05-08

申请号：US14066922

申请日：2013-10-30

Applicant: Konica Minolta, Inc.

Inventor： Akimasa Ishikawa ,  Tatsuya Eguchi ,  Yohei Yamada

IPC: B41J2/385

CPC classification number: G03G15/04072 ,  G03G15/043

Abstract: An image forming apparatus for performing laser exposure is provided. The image forming apparatus includes a driving circuit for supplying drive current to a laser light source in accordance with an image pulse signal; a pulse width expansion portion for expanding a pulse width of the image pulse signal supplied to the driving circuit; and an adjustment control portion for setting, based on state data indicating a state related to light emission start characteristics of the laser light source, a value of the bias current supplied as a part of the drive current to the laser light source and an amount of expansion of the pulse width in such a manner that laser light emission occurs in a period of time having a length equal to a length of a pulse width of each pulse in the image pulse signal.

Abstract translation: 提供了一种用于执行激光曝光的图像形成装置。 图像形成装置包括根据图像脉冲信号向激光光源提供驱动电流的驱动电路; 脉冲宽度扩展部分，用于扩展提供给驱动电路的图像脉冲信号的脉冲宽度; 以及调整控制部分，用于基于指示与激光源的发光开始特性相关的状态的状态数据，将作为驱动电流的一部分提供的偏置电流的值设置到激光光源， 脉冲宽度的扩展使得激光发射在具有等于图像脉冲信号中的每个脉冲的脉冲宽度的长度的时间段内发生。