公开(公告)号：US20180288266A1

公开(公告)日：2018-10-04

申请号：US15937265

申请日：2018-03-27

Applicant: KONICA MINOLTA, INC.

Inventor： Yoshikazu WATANABE ,  So YANO ,  Sotaro YOKOTA

IPC: H04N1/03 ,  G02B27/09 ,  H04N1/028

CPC classification number: H04N1/0306 ,  B41J2/45 ,  G02B27/0961 ,  G03G15/04054 ,  G06K15/1247 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2330/06 ,  H04N1/02845

Abstract: An optical PH includes: a plurality of current-driven light emitting elements that are arranged in a line-shaped region; a controller that outputs a control voltage instructing an amount of a drive current to be supplied to each of the light emitting elements; and a plurality of drivers that correspond one-to-one with the light emitting elements, and each supply the drive current to a corresponding one of the light emitting elements, wherein the drivers each operate as one of: a high-voltage referring driver that supplies the drive current according to a voltage difference between the control voltage and a reference voltage higher than the control voltage; and a low-voltage referring driver that supplies the drive current according to a voltage difference between the control voltage and a reference voltage lower than the control voltage.

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。

公开(公告)号：US20160018755A1

公开(公告)日：2016-01-21

申请号：US14800803

申请日：2015-07-16

Applicant: KONICA MINOLTA, INC.

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

IPC: B41J2/385

CPC classification number: G03G15/04054 ,  G03G15/043

Abstract: An optical print head includes: light-emitting elements in line shape; first power line supplying first reference voltage; second power line supplying drive current to each light-emitting element and supplying second reference voltage; DAC outputting first voltage indicating light emission amount of each light-emitting element; first elements for holding first voltage difference between the first reference voltage and the first voltage; second elements each electrically connectable with corresponding first element and for holding second voltage difference between the second reference voltage and second voltage according to the first voltage, and during supply of drive current, controls each first element to hold the first difference by electrically disconnecting the first and second elements, and temporarily suspends supply of the drive current, and controls the second element to hold the second difference by electrically connecting the first and second elements, such that the drive current according to the second voltage difference is supplied.

Abstract translation: 光学打印头包括：线形的发光元件; 第一电源线提供第一参考电压; 第二电力线向每个发光元件提供驱动电流并提供第二参考电压; DAC输出表示每个发光元件的发光量的第一电压; 用于保持所述第一参考电压和所述第一电压之间的第一电压差的第一元件; 第二元件，其可以与相应的第一元件电连接，并且用于根据第一电压保持第二参考电压和第二电压之间的第二电压差，并且在供应驱动电流期间，通过电连接第一电压 和第二元件，并且暂时停止驱动电流的供给，并且通过电连接第一和第二元件来控制第二元件以保持第二差异，使得提供根据第二电压差的驱动电流。

公开(公告)号：US20160011535A1

公开(公告)日：2016-01-14

申请号：US14790341

申请日：2015-07-02

Applicant: KONICA MINOLTA, INC.

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

IPC: B41J2/385

CPC classification number: G03G15/043 ,  G03G15/04063

Abstract: An optical print head for forming an electrostatic latent image on a photosensitive body, including: current-driven light-emitting elements disposed in a line shape; an indicator circuit that outputs indicator current indicating light emission amounts to the light-emitting elements; and for each light-emitting element: a holding circuit that, during a main scanning period, accumulates indicator current during a sample period to generate an indicator potential and holds the indicator potential during a hold period; and a drive circuit that supplies drive current to the light-emitting element according to the indicator potential, wherein each of the sample periods is divided into writing periods, and each of the holding circuits holds the indicator potential corresponding to the holding circuit according to a total of indicator current amounts in the sample period corresponding to the holding circuit, the indicator current amounts each indicative of indicator current during one of the writing periods.

Abstract translation: 一种用于在感光体上形成静电潜像的光学打印头，包括：以线状布置的电流驱动的发光元件; 指示电路，其向所述发光元件输出指示发光量的指示电流; 并且对于每个发光元件：保持电路，其在主扫描周期期间在采样周期期间累积指示电流以产生指示电位并在保持期间保持指示电位; 以及驱动电路，其根据指示电位向发光元件供给驱动电流，其中每个采样周期被划分为写入周期，并且每个保持电路根据一个保持电路保持与保持电路相对应的指示电位 对应于保持电路的采样周期中的指示器电流量的总和，在一个写入周期期间的每个指示电流的指示器电流量。

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：US20140267527A1

公开(公告)日：2014-09-18

申请号：US14204725

申请日：2014-03-11

Applicant: Konica Minolta, Inc.

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

IPC: G03G15/043

CPC classification number: G03G15/043 ,  G03G15/04054

Abstract: An optical writing device for forming an electrostatic latent image on a photoreceptor by exposing the photoreceptor to light modulated in accordance with image data. The optical writing device has: a substrate; a light-emitting-element array including a plurality of light-emitting elements supported by the substrate to be arranged in a main-scanning direction; and a light-receiving-element array substantially in parallel to the light-emitting-element array, the light-receiving-element array including a plurality of light-receiving elements supported by the substrate to be arranged in the main-scanning direction. For light-quantity measurement of one of the light-emitting elements, at least an output value output from one of the light-receiving elements of which center is located in a different position, with respect to the main-scanning direction, from a center of the one of the light-emitting elements is used.

Abstract translation: 一种光学写入装置，用于通过将感光体暴露于根据图像数据调制的光，在感光体上形成静电潜像。 光写入装置具有：基板; 发光元件阵列，其包括被配置在主扫描方向上的由所述基板支撑的多个发光元件; 以及与发光元件阵列大致平行的受光元件阵列，所述受光元件阵列包括由所述基板支撑的多个受光元件，所述受光元件沿主扫描方向配置。 对于一个发光元件的光量测量，至少从其中心的一个光接收元件相对于主扫描方向位于不同位置的输出值从中心 使用发光元件之一。

公开(公告)号：US20140043627A1

公开(公告)日：2014-02-13

申请号：US13950833

申请日：2013-07-25

Applicant: Konica Minolta, Inc.

Inventor： Yoshiyuki TOSO ,  Tadayasu SEKIOKA ,  Naotoshi KAWAI ,  So YANO ,  Noboru OOMOTO ,  Takashi FUJIWARA

IPC: G06K15/02

CPC classification number: G06K15/1878 ,  G06F3/1208 ,  G06F3/1244 ,  H04N1/46

Abstract: A color correcting system mountable in an image forming apparatus comprises an imaging unit configured to perform image formation and a control unit configured to acquire a control parameter for use in image formation by the imaging unit and a status parameter indicating a status at the time of image formation. If a value for a color in an image formed by the imaging unit does not exceed a first threshold, and at least one member selected from the group consisting of adhering toner amount, gloss, line width, and line position for the image formed by the imaging unit does not exceed a second threshold, the control unit is configured to determine a control parameter on the basis of the acquired control parameter and the acquired status parameter, such that at least a color difference decreases.

Abstract translation: 可安装在图像形成装置中的颜色校正系统包括被配置为执行图像形成的成像单元和被配置为获取由成像单元进行图像形成所使用的控制参数的控制单元和指示图像时的状态的状态参数 形成。 如果由成像单元形成的图像中的颜色的值不超过第一阈值，并且从由以下组成的组中选择的至少一个构件组成：由粘附调色剂量，光泽度，线宽度和线形位置 成像单元不超过第二阈值，则控制单元被配置为基于所获取的控制参数和获取的状态参数来确定控制参数，使得至少色差减小。

公开(公告)号：US20180074432A1

公开(公告)日：2018-03-15

申请号：US15704517

申请日：2017-09-14

Applicant: Konica Minolta, Inc.

Inventor： So YANO ,  Yoshikazu WATANABE ,  Sotaro YOKOTA

IPC: B41J2/385

Abstract: A print head includes: current-driven non-single crystal light emitting elements arranged in a line; thin film transistors that are provided in one-to-one correspondence with the light emitting elements and each supplies a driving current to a corresponding one of the light emitting elements; a detector that detects, when one of the light emitting elements corresponding to one of the thin film transistors emits light, an output voltage of the one of the thin film transistors; and a hardware processor that determines a control voltage to be applied to each of the thin film transistors when next light is emitted according to the output voltage of the one of the thin film transistors detected by the detector and a driving current to be supplied by each of the thin film transistors to cause each of the light emitting elements to emit light with a target light amount.