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1. 发明申请

US20190187601A1 ABNORMALITY DETERMINATION APPARATUS, IMAGE FORMING APPARATUS, ABNORMALITY DETERMINATION SYSTEM, AND PROGRAM 审中-公开
公开(公告)号：US20190187601A1
公开(公告)日：2019-06-20
申请号：US16212684
申请日：2018-12-07
申请人： KONICA MINOLTA, INC.
发明人： Hirotada SEKI , Hiroshi EGUCHI , Natsuyo IDA , Junichi MASUDA , Masahiro NONOYAMA , Akimasa ISHIKAWA
IPC分类号： G03G15/00 , H04R1/08
CPC分类号： G03G15/55 , G03G21/0011 , H04R1/08
摘要： 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.

2. 发明申请

US20220011703A1 GLOSSINESS INSPECTION DEVICE, GLOSSINESS INSPECTION METHOD, AND IMAGE FORMING APPARATUS 有权
公开(公告)号：US20220011703A1
公开(公告)日：2022-01-13
申请号：US17347178
申请日：2021-06-14
申请人： KONICA MINOLTA, INC.
发明人： Atsushi TAKAHASHI , Hitoshi ASANO , Yumiko IZUMIYA , Hirotada SEKI , Akimasa ISHIKAWA
IPC分类号： G03G15/00
摘要： 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.

3. 发明申请

US20210325810A1 IMAGE FORMING DEVICE, GLOSS MEASURING METHOD, AND PROGRAM 有权
公开(公告)号：US20210325810A1
公开(公告)日：2021-10-21
申请号：US17218634
申请日：2021-03-31
申请人： KONICA MINOLTA, INC.
发明人： Akimasa ISHIKAWA , Atsushi TAKAHASHI , Hitoshi ASANO , Yumiko IZUMIYA , Hirotada SEKI
IPC分类号： G03G15/00
摘要： 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.

4. 发明申请

US20190302671A1 IMAGE FORMING APPARATUS, IMAGE FORMING SYSTEM, AND CONTROL PROGRAM OF IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20190302671A1
公开(公告)日：2019-10-03
申请号：US16285276
申请日：2019-02-26
申请人： KONICA MINOLTA, INC.
发明人： Hiroshi EGUCHI , Natsuyo IDA , Junichi MASUDA , Masahiro NONOYAMA , Akimasa ISHIKAWA
IPC分类号： G03G15/00
摘要： An image forming apparatus includes: a first rotor and a second rotor that are each a rotatable member; a first movable member including the first rotor or a transferer that transfers power of the first rotor to another member; a second movable member including the second rotor or a transferer that transfers power of the second rotor to another member; a hardware processor that drives simultaneously the first rotor and the second rotor at mutually different numbers of revolutions or speeds, and performs abnormality diagnosis on the first movable member and the second movable member, based on the sounds of operation acquired by the sound acquirer; and a sound acquirer that acquires sounds of operation of the first movable member and the second movable member with the first rotor and the second rotor being driven by the hardware processor.

5. 发明申请

US20220191340A1 SHEET CONVEYANCE DEVICE AND IMAGE FORMING APPARATUS 有权
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.

6. 发明申请

US20220185615A1 IMAGE FORMING APPARATUS 有权
公开(公告)号：US20220185615A1
公开(公告)日：2022-06-16
申请号：US17529414
申请日：2021-11-18
申请人： KONICA MINOLTA, INC.
发明人： Atsushi TAKAHASHI , Hitoshi ASANO , Yumiko IZUMIYA , Hirotada SEKI , Akimasa ISHIKAWA
IPC分类号： B65H43/00 , B65H11/00
摘要： 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.

7. 发明申请

US20150028791A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20150028791A1
公开(公告)日：2015-01-29
申请号：US14332987
申请日：2014-07-16
申请人： KONICA MINOLTA, INC.
发明人： Takahiro TSUJIMOTO , Hideki NAKAMURA , Takeshi ISHIDA , Naoto SUGAYA , Akimasa ISHIKAWA
IPC分类号： H02P8/12 , G03G15/00
CPC分类号： H02P8/12 , G03G15/06 , G03G15/5008 , G03G15/6529
摘要： An image forming apparatus drives and rotates at least one of a photosensitive drum and a transport roller with use of a stepping motor in a multi-phase excitation mode. The image forming apparatus includes: a constant-voltage control unit controlling the stepping motor by applying a constant voltage for each phase; a constant-current control unit controlling the stepping motor by regulating an amount of current for each phase by a chopping control; a measuring unit measuring a chopping count of each phase on a per-step basis; a chopping count determination unit determining whether the chopping count of each phase is less than or equal to a predetermined count; and a control switching unit causing the constant-voltage control unit to control the stepping motor when the chopping count determination unit determines affirmatively, and causing the constant-current control unit to control the stepping motor when the chopping count determination unit determines negatively.
摘要翻译：图像形成装置利用多相励磁模式中的步进电机来驱动和旋转感光鼓和输送辊中的至少一个。图像形成装置包括：恒压控制单元，通过对各相施加恒定电压来控制步进电动机; 恒流控制单元，其通过斩波控制来调节各相的电流量来控制所述步进电动机; 测量单元，测量每个阶段的每个阶段的切碎计数; 斩波计数确定单元，确定每相的斩波计数是否小于或等于预定计数; 以及控制切换单元，其使得所述恒压控制单元在所述切断计数确定单元肯定地确定时控制所述步进电机，并且当所述切断计数确定单元判定为否定时，使所述恒流控制单元控制所述步进电机。

8. 发明申请

US20220390889A1 IMAGE FORMING SYSTEM AND METHOD FOR DETECTING GLOSSINESS 有权
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.

9. 发明申请

US20200255239A1 MEASURING DEVICE, IMAGE FORMING APPARATUS, AND MEASURING METHOD 审中-公开
公开(公告)号：US20200255239A1
公开(公告)日：2020-08-13
申请号：US16741922
申请日：2020-01-14
申请人： KONICA MINOLTA, INC.
发明人： Yumiko IZUMIYA , Satoshi OGATA , Kazutoshi YOSHIMURA , Hitoshi ASANO , Hirotada SEKI , Akimasa ISHIKAWA
IPC分类号： B65H5/06 , B65H7/02 , B65H5/16
摘要： 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.

10. 发明申请

US20180120742A1 PHASE CONTROL DEVICE, IMAGE FORMING APPARATUS, AND RECORDING MEDIUM 审中-公开
公开(公告)号：US20180120742A1
公开(公告)日：2018-05-03
申请号：US15793765
申请日：2017-10-25
申请人： Konica Minolta, Inc.
发明人： Junichi MASUDA , Mikiyuki AOKI , Toru KASAMATSU , Masahiro NONOYAMA , Akimasa ISHIKAWA
IPC分类号： G05F1/00 , G03G15/20
CPC分类号： G03G15/2039 , G03G15/5004 , G03G15/80 , G03G2215/00666
摘要： A phase control device includes: at least one switching element connected to an AC power source, the switching element being capable of: turning on and off at specified timings; delivering AC power to a load upon turn-on and cutting it off upon turn-off; and keeping an on-time from the start to the end of turn-on and an off-time from the start to the end of turn-off, the on-time and off-time being variable; a timing setting portion that sets a turn-on and turn-off timing for turning on and off the switching element; a judgment portion that judges whether or not the turn-on and turn-off timing are on at a phase within a first or second phase range; and a processor that starts turning on and off the switching element at the turn-on and turn-off timing, the processor being capable of adjusting the on-time and off-time depending on the judgment result.

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