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：US20170115592A1

公开(公告)日：2017-04-27

申请号：US15282889

申请日：2016-09-30

Applicant: KONICA MINOLTA, INC.

Inventor： So YANO ,  Masayuki IIJIMA ,  Takahiro MATSUO ,  Takaki UEMURA ,  Akira TANIYAMA

IPC: B41J2/385

CPC classification number: G03G15/04054 ,  G03G15/04063

Abstract: A light emitting device configured to cause a series circuit in which an OLED is connected to a thin film transistor to emit light by applying a predetermined voltage to the thin film transistor includes: a forward direction voltage estimating unit configured to estimate a forward direction voltage in a case where the OLED is caused to emit light at a set light quantity; a driving current amount estimating unit configured to estimate a driving current amount required for causing the OLED to emit light at the set light quantity; a source-drain voltage calculating unit configured to calculate a source-drain voltage applied to the thin film transistor from the predetermined voltage and the forward direction voltage; and a gate-source voltage determining unit configured to determine a gate-source voltage of the thin film transistor corresponding to the source-drain voltage in a case where the driving current amount is a drain current.

公开(公告)号：US20150317953A1

公开(公告)日：2015-11-05

申请号：US14699189

申请日：2015-04-29

Applicant: KONICA MINOLTA INC.

Inventor： Satoshi MASUDA ,  Makoto OBAYASHI ,  Yoshikazu WATANABE ,  Masayuki IIJIMA ,  So YANO ,  Takaki UEMURA

IPC: G09G5/18 ,  G09G3/32

CPC classification number: G03G15/04054 ,  G09G3/3283 ,  G09G5/18 ,  G09G2300/0426

Abstract: An optical writing device includes a plurality of current driven light emitting elements, first and second power source lines, a designation circuit that outputs a designation potential, first driving circuits provided for each of the light emitting elements to supply driving current to the corresponding light emitting element, second driving circuits provided for each of the light emitting elements to supply driving current to the corresponding light emitting element, and a switching control unit that alternately switches respective states of the first and second driving circuits between a state where one of the first and second driving circuits receives the designation potential while the other driving circuit supplies the driving current, and a state where the other driving circuit receives the designation potential while the one driving circuit supplies the driving current.

Abstract translation: 光学写入装置包括多个电流驱动发光元件，第一和第二电源线，输出指定电位的指定电路，为每个发光元件提供的第一驱动电路，以向相应的发光元件提供驱动电流 为每个发光元件提供的元件第二驱动电路，以向相应的发光元件提供驱动电流;以及切换控制单元，其交替地切换第一和第二驱动电路的各自的状态， 第二驱动电路在另一个驱动电路提供驱动电流的同时接收指定电位，另一个驱动电路在一个驱动电路提供驱动电流的同时接收指定电位的状态。

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：US20210364825A1

公开(公告)日：2021-11-25

申请号：US17245499

申请日：2021-04-30

Applicant: Konica Minolta, Inc.

Inventor： Yoshikazu WATANABE ,  Takaki UEMURA ,  Sotaro YOKOTA

IPC: G02C7/08 ,  G02B7/10

Abstract: A focus adjusting tool used to perform an initial setting for a pair of autofocus eyeglasses includes an adjusting lens that refracts reflected light from a visual object, a housing including an inner space that allows a parallel movement of the adjusting lens, an adjusting unit that adjusts a position of the adjusting lens inside the housing, and a first end and a second end in a moving direction of the adjusting lens. The first end is provided with a hole for visually observing a visual object through a power variable lens of the pair of autofocus eyeglasses. The adjusting lens adjusts, in response to the position thereof inside the housing, an incident angle of the reflected light from the visual object into the power variable lens, the visual object being located on the side of the second end

公开(公告)号：US20160124337A1

公开(公告)日：2016-05-05

申请号：US14921290

申请日：2015-10-23

Applicant: KONICA MINOLTA, INC.

Inventor： Masayuki IIJIMA ,  So YANO ,  Yasushi NAGASAKA ,  Takaki UEMURA ,  Takahiro MATSUO

IPC: G03G15/043 ,  H04N1/00 ,  H04N1/32 ,  G02B3/00

CPC classification number: G03G15/043 ,  G02B3/0006 ,  G03G15/04045 ,  H04N1/00814 ,  H04N1/32587

Abstract: An optical writing device including light-emitting elements forming element arrays. The element arrays are each composed of light-emitting elements arranged in line in a main scanning direction, and reside at respective positions along a sub-scanning direction. A correction unit receives signal values in one-to-one correspondence with the light-emitting elements and performs correction to acquire corrected signal values each indicating a light amount of a corresponding light-emitting element. The correction is for eliminating a light amount difference in the main scanning direction occurring for each element array. A driving unit supplies driving currents to the light-emitting elements based on the corrected signal values, and a control unit performs a control of causing at least two element arrays to emit light for different durations within one main scanning period. The control is for eliminating a light amount difference in the sub scanning direction occurring between the at least two element arrays.

Abstract translation: 一种包括形成元件阵列的发光元件的光学写入装置。 元件阵列由沿主扫描方向排成一行的发光元件构成，并且位于沿副扫描方向的各位置。 校正单元接收与发光元件一一对应的信号值，并执行校正以获取各自指示对应的发光元件的光量的校正信号值。 该校正用于消除针对每个元件阵列发生的主扫描方向的光量差。 驱动单元基于校正的信号值向驱动单元提供驱动电流，并且控制单元执行使至少两个元件阵列在一个主扫描周期内不同持续时间发光的控制。 该控制用于消除在至少两个元件阵列之间发生的副扫描方向上的光量差异。

公开(公告)号：US20150266310A1

公开(公告)日：2015-09-24

申请号：US14664086

申请日：2015-03-20

Applicant: Konica Minolta, Inc.

Inventor： Yoshikazu WATANABE ,  Satoshi MASUDA ,  Makoto OBAYASHI ,  Masayuki IIJIMA ,  So YANO ,  Takaki UEMURA

IPC: B41J2/47

CPC classification number: B41J2/47 ,  B41J2/451 ,  B41J2002/453

Abstract: Optical print head includes: light-emitting elements connected one-to-one to current supply lines branching from first power line at different positions in longitudinal direction; holding elements; signal writing unit writing luminance signal into each holding element, the luminance signal being represented by voltage indicating light emission amount of corresponding light-emitting element; second power line supplying reference voltage to each holding element, the reference voltage being reference when signal writing unit writes luminance signal into holding element; and driving drivers corresponding one-to-one with current supply lines and controlling current supplied to corresponding current supply line from first power line, in accordance with voltage held in corresponding holding element when signal writing unit has written luminance signal into corresponding holding element, wherein power source supplying the reference voltage to second power line is common with power source supplying voltage to signal output subunit outputting luminance signal.

Abstract translation: 光学打印头包括：与第一电源线在纵向不同位置分支的电流供应线路一对一连接的发光元件; 持有元素 信号写入单元将亮度信号写入每个保持元件，所述亮度信号由表示对应的发光元件的发光量的电压表示; 第二电力线向每个保持元件提供参考电压，参考电压是信号写入单元将亮度信号写入保持元件时的参考电压; 以及当信号写入单元将亮度信号写入到相应的保持元件中时，根据当前保持在相应的保持元件中的电压，从当前电源线驱动一对一的驱动驱动器，并控制从第一电源线提供给相应的电流线的电流，其中 向第二电力线提供参考电压的电源对于输出亮度信号的信号输出子单元的电源提供电压是常见的。

公开(公告)号：US20180367693A1

公开(公告)日：2018-12-20

申请号：US15974949

申请日：2018-05-09

Applicant: KONICA MINOLTA, INC.

Inventor： Makoto OBAYASHI ,  Takaki UEMURA ,  Masayuki IIJIMA

IPC: B41J2/385 ,  H04N1/028

CPC classification number: H04N1/02865 ,  F21Y2115/10 ,  G03G15/0415 ,  G03G15/043 ,  G03G15/0806 ,  G03G15/607

Abstract: An image forming deviceincludes: a photoreceptor; a longitudinal light emitting member constituted from light emitting element rows that are arranged in a lateral direction and are each constituted from light emitting elements arranged in a longitudinal direction; an optical member that is longitudinal and is disposed to condense light emitted from the light emitting elements onto the photoreceptor; and a hardware processor that: selects and causes one or more light emitting elements for each light emitting element row to emit light; acquires an exposure amount for each light emitting element row; calculates a distribution of the exposure amounts acquired for the light emitting element rows, and calculates a position in the lateral direction corresponding to a predetermined exposure amount in the distribution; and judges whether a difference between the calculated position and a reference position in the lateral direction at a reference time is less than a threshold value.

公开(公告)号：US20160334756A1

公开(公告)日：2016-11-17

申请号：US15153235

申请日：2016-05-12

Applicant: Konica Minolta, Inc.

Inventor： Akira TANIYAMA ,  So YANO ,  Takahiro MATSUO ,  Yasushi NAGASAKA ,  Takaki UEMURA ,  Masayuki llJIMA

IPC: B41J2/385

CPC classification number: G03G21/20 ,  G03G15/04063 ,  G03G15/043

Abstract: An optical writing device adopting a low cost and simple structure can obtain temperatures of light emitting elements. The device comprises a plurality of light emitting elements arranged linearly in a main scanning direction. The amount of light emitting of the light emitting elements changes by self-generated heat. The light emitting elements are divided into a plurality of groups. Each of the groups includes a prescribed number of light emitting elements. The device comprises a control unit for calculating the amount of heat generation of the light emitting elements for each of groups from clock time t0 to clock time t0+Δt. The control unit calculates the temperature for each of the groups at the clock time t0+Δt, based on the amount of heat generation from the clock time t0 to the clock time t0+Δt and the temperature at the clock time t0.

Abstract translation: 采用低成本和简单结构的光写入装置可以获得发光元件的温度。 该装置包括沿主扫描方向直线布置的多个发光元件。 发光元件的发光量通过自发热量而变化。 发光元件被分成多组。 每个组包括规定数量的发光元件。 该装置包括控制单元，用于从时钟时间t0到时钟时间t0 +Δt计算每个组的发光元件的发热量。 控制单元基于从时钟时间t0到时钟时间t0 +Δt的发热量和时钟时间t0的温度来计算时钟时间t0 +Δt处的每个组的温度。

公开(公告)号：US20160150623A1

公开(公告)日：2016-05-26

申请号：US14938471

申请日：2015-11-11

Applicant: KONICA MINOLTA, INC.

Inventor： Takaki UEMURA ,  Yasushi NAGASAKA ,  So YANO ,  Masayuki IIJIMA ,  Takahiro MATSUO

IPC: H05B37/02 ,  G03G15/043 ,  H05B33/08

CPC classification number: G03G15/043 ,  G03G15/04054 ,  G03G2215/0132 ,  H05B33/0803 ,  H05B33/0866 ,  H05B33/0896 ,  Y02B20/36

Abstract: A light-emitting device including a light-emitting element and causing the light emitting element to emit different light amounts. The light-emitting device includes: a measurement unit, a predetermined value storage unit, and a driving signal calculation unit. The measurement unit measures a surrounding temperature of the light-emitting element. The predetermined value storage unit stores a predetermined value of a driving signal for causing the light-emitting element to emit light. The driving signal calculation unit executes calculation of a value of the driving signal for causing the light-emitting element to emit a desired light amount by applying a correction factor in accordance with the measured surrounding temperature and the desired light amount to the predetermined value of the driving signal.

Abstract translation: 一种包括发光元件并使发光元件发射不同光量的发光器件。 发光装置包括：测量单元，预定值存储单元和驱动信号计算单元。 测量单元测量发光元件的周围温度。 预定值存储单元存储用于使发光元件发光的驱动信号的预定值。 驱动信号计算单元通过根据测量的周围温度和期望的光量将校正因子应用于预定值的驱动信号计算单元来执行用于使发光元件发射期望光量的驱动信号的值的计算， 驾驶信号。