公开(公告)号：US10345730B2

公开(公告)日：2019-07-09

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: G03G15/043 ,  G03G15/04

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：US09671752B2

公开(公告)日：2017-06-06

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 Iijima

IPC: G03G21/20 ,  G03G15/043 ,  G03G15/04

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.

公开(公告)号：US09471001B2

公开(公告)日：2016-10-18

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 ,  G02B3/00 ,  H04N1/00 ,  H04N1/32

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：US09335652B2

公开(公告)日：2016-05-10

申请号：US14182379

申请日：2014-02-18

Applicant: Konica Minolta, Inc.

Inventor： Yoshikazu Watanabe ,  Satoshi Masuda ,  Makoto Obayashi ,  Masayuki Iijima ,  So Yano

IPC: G03G15/043 ,  G03G15/04

CPC classification number: G03G15/043 ,  G03G15/04054

Abstract: An optical writing device having; a plurality of light-emitting points; a plurality of drive circuits for supplying drive currents to the plurality of light-emitting points respectively; a photodetector for outputting signals indicating quantities of light entering thereto from the respective light-emitting points; a gain switch circuit for outputting photodetection signals obtained by amplifying the signals output from the photodetector in regard to the respective light-emitting points with gains preset for the respective light-emitting points; and a control circuit for controlling the drive circuits such that the photodetection signals output from the gain switch circuit in regard to the respective light-emitting points coincide with a value substantially equal to a predetermined reference value. The gains for the respective light-emitting points are preset based on the distances between the photodetector and the respective light-emitting points.

Abstract translation: 一种光写入装置，具有： 多个发光点; 多个驱动电路，用于分别向多个发光点提供驱动电流; 光电检测器，用于输出指示从各个发光点进入的光量的信号; 增益切换电路，用于输出通过对于各个发光点放大对于各个发光点从光检测器输出的信号而获得的增益，该增益为各个发光点预先设定的增益; 以及控制电路，用于控制驱动电路，使得从增益开关电路输出的关于各个发光点的光检测信号与基本上等于预定基准值的值一致。 基于光电检测器和各个发光点之间的距离来预设各个发光点的增益。

公开(公告)号：US09110399B2

公开(公告)日：2015-08-18

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: B41J29/393 ,  G03G15/043 ,  G03G15/04

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：US10482357B2

公开(公告)日：2019-11-19

申请号：US15879559

申请日：2018-01-25

Applicant: Konica Minolta, Inc.

Inventor： So Yano ,  Yoshikazu Watanabe ,  Sotaro Yokota

IPC: G06K15/12 ,  G03G15/043 ,  G03G15/04 ,  B41J2/45 ,  H04N1/028

Abstract: An optical print head including light emitting elements, drivers, setters, a detector, and a generator. The detector is for detecting a noise component superimposed on a luminance signal, on transmission circuitry for transmitting the luminance signal from a setter to a driver, in a state in which the setter is outputting the luminance signal. The generator, for each light emitting element due to emit light in a line subsequent to a line for which the detector detected the noise component, generates and causes a setter corresponding to the light emitting element to output an adjusted luminance signal such that the light emitting element emits a light emission amount according to image data in a state in which the noise component detected by the detector is superimposed on the adjusted luminance signal.

公开(公告)号：US09983500B2

公开(公告)日：2018-05-29

申请号：US15080769

申请日：2016-03-25

Applicant: Konica Minolta, Inc.

Inventor： So Yano ,  Yasushi Nagasaka ,  Masayuki Iijima ,  Takahiro Matsuo ,  Takaki Uemura ,  Akira Taniyama

IPC: G03G15/04 ,  G03G15/043

CPC classification number: G03G15/043 ,  G03G15/04054 ,  G03G2215/0132

Abstract: An optical writing device performing optical writing with a light-emitting element, performing light amount switching, and including: a unit estimating a first value corresponding to a current amount for causing the element to emit a first light amount immediately after the switching; a unit supplying to the element, from immediately after the switching, a current amount corresponding to a first digital value acquired by quantizing the first value; a unit estimating a time amount through which a current amount for keeping the element emitting the first light amount increases from the current amount for causing the element to emit the first light amount immediately after the switching to a current amount corresponding to a second digital value greater than the first digital value by one step; and a unit supplying to the element, when the time amount elapses after the switching, the current amount corresponding to the second digital value.

公开(公告)号：US09465313B2

公开(公告)日：2016-10-11

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: G03G15/00 ,  G03G15/04 ,  G03G15/043

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：US09208413B2

公开(公告)日：2015-12-08

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: G06F15/00 ,  G06K15/02 ,  H04N1/46 ,  G06F3/12

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用于由成像单元进行图像形成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：US20180218244A1

公开(公告)日：2018-08-02

申请号：US15879559

申请日：2018-01-25

Applicant: Konica Minolta, Inc.

Inventor： So Yano ,  Yoshikazu Watanabe ,  Sotaro Yokota

IPC: G06K15/12 ,  B41J2/45 ,  H04N1/028

CPC classification number: G06K15/1247 ,  B41J2/451 ,  G03G15/04054 ,  G03G15/04063 ,  G03G15/043 ,  H04N1/02815

Abstract: An optical print head including light emitting elements, drivers, setters, a detector, and a generator. The detector is for detecting a noise component superimposed on a luminance signal, on transmission circuitry for transmitting the luminance signal from a setter to a driver, in a state in which the setter is outputting the luminance signal. The generator, for each light emitting element due to emit light in a line subsequent to a line for which the detector detected the noise component, generates and causes a setter corresponding to the light emitting element to output an adjusted luminance signal such that the light emitting element emits a light emission amount according to image data in a state in which the noise component detected by the detector is to superimposed on the adjusted luminance signal.