公开(公告)号：US20200023637A1

公开(公告)日：2020-01-23

申请号：US16502889

申请日：2019-07-03

Applicant: Konica Minolta, Inc.

Inventor： Yasuhiro ISHIHARA ,  Yuhei TATSUMOTO ,  Toshikazu HIGASHI ,  Makoto SHIMAZOE

IPC: B41J2/045 ,  H05B3/20 ,  H05B3/02 ,  B41J2/125 ,  G05D23/24 ,  G05D23/19

Abstract: A heater includes: a planar heat generator; a power supply circuit that controls supply of power to the planar heat generator; a plurality of temperature sensors that is provided on the planar heat generator and measures a temperature; and a hardware processor that controls the power supply circuit in a predetermined condition to maintain a temperature measured by at least one of the plurality of temperature sensors at a target value, wherein the planar heat generator includes: an insulator; and a heat generator disposed on the insulator, the heat generator includes each of a plurality of linear parts extending in parallel with each other at a predetermined interval P, and each of the plurality of temperature sensors is disposed along a direction orthogonal to an extending direction of each of the plurality of linear parts at a position mutually shifted by a predetermined distance D.

公开(公告)号：US20160349662A1

公开(公告)日：2016-12-01

申请号：US15157304

申请日：2016-05-17

Applicant: Konica Minolta, Inc.

Inventor： Toshiaki TANAKA ,  Yasuhiro ISHIHARA ,  Mineo YAMAMOTO

IPC: B41J2/385

CPC classification number: G03G15/043 ,  G03G15/04054

Abstract: An image forming apparatus includes: an array of m light-emitting elements extending in a main scanning direction, the m being an integer satisfying m≧3; a memory that stores a cumulative light emission time of each of the m light-emitting elements; a light intensity adjusting portion that obtains a light intensity adjusting value for the each light-emitting element; an activating portion that controls the activation and deactivation of the each light-emitting element with the light intensity adjusting value; and a selecting portion that selects n light-emitting elements from an end of the array, the n being an integer satisfying n≧2 and n

Abstract translation: 一种图像形成装置，包括：沿主扫描方向延伸的m个发光元件的阵列，m为满足m≥3的整数; 存储每个m个发光元件的累积发光时间的存储器; 获得每个发光元件的光强度调节值的光强度调节部; 激活部分，其利用光强度调节值来控制每个发光元件的激活和去激活; 以及选择部，其从所述阵列的端部选择n个发光元件，所述n为满足n≥2且n

公开(公告)号：US20140079425A1

公开(公告)日：2014-03-20

申请号：US14028664

申请日：2013-09-17

Applicant: KONICA MINOLTA, INC.

Inventor： Toshiaki TANAKA ,  Yasuhiro ISHIHARA ,  Kosuke SASAKI

IPC: G03G15/20

CPC classification number: G03G15/205 ,  G03G2215/2035

Abstract: A heater control device that performs phase control of AC power and supplies phase-controlled power to a heater, the heater control device including: a control unit configured to, in the phase control, gradually increase an on-duty ratio until a target power amount is supplied to the heater; and a judgment unit configured to judge whether or not the on-duty ratio is within a predetermined range of on-duty ratios including a 50% on-duty ratio. The control unit (i) increases the on-duty ratio by a first amount while the on-duty ratio is within the predetermined range, and (ii) increases the on-duty ratio by a second amount while the on-duty ratio is not within the predetermined range. The first amount is greater than the second amount.

Abstract translation: 1.一种加热器控制装置，其对交流电力进行相位控制，向加热器供给相位控制的电力，所述加热器控制装置包括：控制部，其在所述相位控制中逐渐增加占空比直至目标功率量 供应给加热器; 以及判定单元，其判断所述占空比是否在包括50％占空比的占空比范围内。 控制单元（i）在占空比在预定范围内时将占空比增加第一量，并且（ii）在占空比不是时将占空比增加第二量 在预定范围内。 第一个数量大于第二个数量。

公开(公告)号：US20210061603A1

公开(公告)日：2021-03-04

申请号：US17004527

申请日：2020-08-27

Applicant: Konica Minolta, Inc.

Inventor： Yutaka YAMAMOTO ,  Akinori KIMATA ,  Hiroshi EGUCHI ,  Yuji KOBAYASHI ,  Natsuyo IDA ,  Yasuhiro ISHIHARA

IPC: B65H7/14

Abstract: An image forming device including an optical sensor, an ultrasound sensor, and a conveyance guide. The optical sensor and the ultrasound sensor are disposed alongside a conveyance path of a sheet and are used to determine sheet type. The conveyance guide guides the sheet along the conveyance path. The conveyance guide is structured such that, on the conveyance path between the optical sensor and the ultrasound sensor, the sheet is in contact with the conveyance guide while a portion of the sheet is in a light irradiation range of the optical sensor and a different portion of the sheet is in an ultrasound irradiation range of the ultrasound sensor.

公开(公告)号：US20190033771A1

公开(公告)日：2019-01-31

申请号：US16025792

申请日：2018-07-02

Applicant: Konica Minolta, Inc.

Inventor： Katsuhide SAKAI ,  Yasuhiro ISHIHARA ,  Satoshi CHIKAZAWA

IPC: G03G15/00

Abstract: An image forming apparatus that conveys a sheet and forms an image on the sheet, the image forming apparatus includes: a plurality of rollers that are arranged at different positions from one another in a conveyance path of the sheet, and convey the sheet; a motor that rotationally drives at least one of the rollers; a drive that drives the motor by applying a current to the motor; and a hardware processor that determines whether a jam has occurred and a jam type, in accordance with a change in the current flowing in the motor in a period during which the sheet is expected to pass through a target roller being rotationally driven by the motor among the rollers.

公开(公告)号：US20200031114A1

公开(公告)日：2020-01-30

申请号：US16502961

申请日：2019-07-03

Applicant: Konica Minolta, Inc.

Inventor： Yasuhiro ISHIHARA ,  Yuhei TATSUMOTO ,  Toshikazu HIGASHI ,  Makoto SHIMAZOE

IPC: B41J2/045

Abstract: A heater includes: a planar heat generator; a power supply circuit that controls supply of power to the planar heat generator; a plurality of temperature sensors that is provided on the planar heat generator and measures a temperature; and a hardware processor that detects abnormality of the temperature sensor in a case where a difference in temperature measured by each of two of the temperature sensors out of the plurality of temperature sensors exceeds an abnormality threshold value after a predetermined waiting time has elapsed since the supply of power to the planar heat generator is stopped.

公开(公告)号：US20170264771A1

公开(公告)日：2017-09-14

申请号：US15447902

申请日：2017-03-02

Applicant: Konica Minolta, Inc.

Inventor： Toshinori INOMOTO ,  Yasuhiro ISHIHARA ,  Toshiaki TANAKA ,  Satoshi CHIKAZAWA

IPC: H04N1/028 ,  H04N1/04 ,  H04N1/00

CPC classification number: H04N1/02865 ,  H04N1/00734 ,  H04N1/0285 ,  H04N1/02855 ,  H04N1/02895 ,  H04N1/04 ,  H04N2201/0094

Abstract: An image reading apparatus includes: three or more light sources configured to each emit light; a light receiving unit including a common light receiving surface configured to detect each light emitted; and an image generation unit configured to cause the three or more light sources to be switched over in a predetermined order and emit the corresponding light, and generate an image read from a document, wherein at least one of the three or more light sources includes a white light source and an optical filter, and the optical filter is configured such that a half-value width of a wavelength with respect to a maximum intensity of a spectral characteristic of the emitted light after transmission is wider than a half-value width of a wavelength with respect to a maximum intensity of the spectral characteristic of the light emitted from at least one of the other light sources.

公开(公告)号：US20150373283A1

公开(公告)日：2015-12-24

申请号：US14746027

申请日：2015-06-22

Applicant: KONICA MINOLTA., INC.

Inventor： Akihiro HAYASHI ,  Yuji KOBAYASHI ,  Harumitsu FUJIMORI ,  Shiro UMEDA ,  Kosuke MASUMOTO ,  Yasuhiro ISHIHARA ,  Hiroshi YAMAGUCHI ,  Isao WATANABE

IPC: H04N5/272 ,  H04N5/262 ,  G06K9/00

CPC classification number: H04N5/272 ,  G06F3/017 ,  G06F3/0416 ,  G06F3/0425 ,  G06K9/00355 ,  G06K9/2054 ,  G06T3/4038

Abstract: A photographing system includes a photographing device configured to photograph a surface; a detector configured to detect a change in a position of an object in a space between the surface and the photographing device; and an obtaining portion configured to obtain an image of an area of the surface by the photographing device when the detector detects the change, the area being not viewed by the photographing device before the change due to interruption of the object and being viewed by the photographing device after the change.

Abstract translation: 摄影系统包括被配置为拍摄表面的拍摄装置; 检测器，其被配置为检测所述表面和所述拍摄装置之间的空间中的物体的位置的变化; 以及获取部，其被配置为当所述检测器检测到所述改变时由所述拍摄装置获得所述表面的区域的图像，所述拍摄装置在由于所述物体的中断而被改变之前未被所述拍摄装置观看的区域并且被所述拍摄所观看 设备更换后。

公开(公告)号：US20150168886A1

公开(公告)日：2015-06-18

申请号：US14557971

申请日：2014-12-02

Applicant: Konica Minolta, Inc.

Inventor： Toshiaki TANAKA ,  Yasuhiro ISHIHARA ,  Kosuke MASUMOTO ,  Satoshi CHIKAZAWA

IPC: G03G15/20

CPC classification number: G03G15/2039 ,  G03G15/5025

Abstract: An image forming apparatus includes an image forming section to form a toner image and transfer the toner image to a recording medium and a fixing section to heat the recording medium transferred with the toner image and further an image analyzing section to extract a density value or a size value of an imaging object included in an image, and a temperature determining section to determine a minimum fixing temperature based on the density value or size value of the imaging object included in a page image. The temperature determining section determines the minimum fixing temperature to be lower when a highest one of the density values is lower than when the highest value is higher or determines the minimum fixing temperature to be lower when a largest one of the size values is smaller than when the largest size value is larger.

Abstract translation: 图像形成装置包括图像形成部分，用于形成调色剂图像并将调色剂图像转印到记录介质和固定部分，以加热用调色剂图像转印的记录介质，并且还提供图像分析部分以提取浓度值或 包括在图像中的成像对象的尺寸值和温度确定部分，用于基于包括在页面图像中的成像对象的浓度值或尺寸值来确定最小定影温度。 当最高的一个密度值低于最高值的最高值时，温度确定部分将最小定影温度确定为较低，或者当最大的一个尺寸值小于 最大尺寸值越大。

公开(公告)号：US20190265624A1

公开(公告)日：2019-08-29

申请号：US16259720

申请日：2019-01-28

Applicant: KONICA MINOLTA, INC.

Inventor： Katsuhide SAKAI ,  Yasuhiro ISHIHARA ,  Satoshi CHIKAZAWA

IPC: G03G15/00

Abstract: An image forming apparatus that forms an image on a sheet includes: a rotating body that forms the image; a motor that rotationally drives the rotating body; a current measurer that measures a motor current flowing through a current supply path including a winding of the motor at a measurement timing that is a timing after the motor is started; a torque acquisitor that acquires a torque value of the motor, based on a measured value of the motor current; and a corrector that performs correction to cancel a current change amount based on a characteristic change depending on a temperature state of the motor at the measurement timing, in acquisition of the torque value by the torque acquisitor.