公开(公告)号：US10031437B2

公开(公告)日：2018-07-24

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: G03G15/043 ,  H05B33/08 ,  G03G15/04

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.

公开(公告)号：US09594327B2

公开(公告)日：2017-03-14

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: G03G15/04 ,  G09G5/18 ,  G09G3/3283 ,  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：US09254678B2

公开(公告)日：2016-02-09

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: B41J2/435 ,  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，从第一电力线控制提供给相应电流线的电流，驱动驱动器与当前电源线一一对应， 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：US09076741B2

公开(公告)日：2015-07-07

申请号：US14307719

申请日：2014-06-18

Applicant: Konica Minolta, Inc.

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

IPC: H01L27/32 ,  H01L51/52 ,  G03G15/04

CPC classification number: H01L27/3227 ,  B41J2/451 ,  G03G15/04063 ,  H01L51/5218 ,  H01L51/5234 ,  H01L51/5265

Abstract: A light-emitting element having a light-emitting section and a light-receiving section provided on a substrate. The light-emitting section includes: an organic compound in which light is emitted; a translucent reflecting portion that transmits the emitted light which has spectral radiance changeable with changes in ambient temperature; and a transparent portion that radiates first part of the light coming through the translucent reflecting portion to outside and total-reflects second part that is light incident to a boundary surface therebetween at angles larger than a critical angle. Wherein, the light-receiving section is capable of receiving the light total-reflected at the boundary surface, the received light having a quantity of light changeable with changes in wavelength of the light passing through the translucent reflecting portion. The light-receiving section further outputs a signal which has an amplitude level in correlation to the quantity of light.

Abstract translation: 一种具有发光部分和设置在基板上的光接收部分的发光元件。 发光部包括：发光的有机化合物; 透射具有随着环境温度变化而变化的光谱辐射的发射光的半透明反射部分; 以及将通过半透明反射部分的光的第一部分辐射到外部并且以大于临界角的角度全反射入射到其边界面的光的第二部分的透明部分。 其中，光接收部能够接收在边界面全反射的光，所接收的光具有随着通过半透明反射部的光的波长变化而变化的光量。 光接收部分还输出具有与光量相关的振幅电平的信号。

公开(公告)号：US20140375743A1

公开(公告)日：2014-12-25

申请号：US14307719

申请日：2014-06-18

Applicant: Konica Minolta, Inc.

Inventor： Yoshikazu WATANABE ,  Satoshi Masuda ,  Makoto Obayashi ,  Masayuki Iljima ,  So Yano

IPC: B41J2/385 ,  H01L29/08

CPC classification number: H01L27/3227 ,  B41J2/451 ,  G03G15/04063 ,  H01L51/5218 ,  H01L51/5234 ,  H01L51/5265

Abstract: A light-emitting element having a light-emitting section and a light-receiving section provided on a substrate. The light-emitting section includes: an organic compound in which light is emitted; a translucent reflecting portion that transmits the emitted light which has spectral radiance changeable with changes in ambient temperature; and a transparent portion that radiates first part of the light coming through the translucent reflecting portion to outside and total-reflects second part that is light incident to a boundary surface therebetween at angles larger than a critical angle. Wherein, the light-receiving section is capable of receiving the light total-reflected at the boundary surface, the received light having a quantity of light changeable with changes in wavelength of the light passing through the translucent reflecting portion. The light-receiving section further outputs a signal which has an amplitude level in correlation to the quantity of light.

Abstract translation: 一种具有发光部分和设置在基板上的光接收部分的发光元件。 发光部包括：发光的有机化合物; 透射具有随着环境温度变化而变化的光谱辐射的发射光的半透明反射部分; 以及将通过半透明反射部分的光的第一部分辐射到外部并且以大于临界角的角度全反射入射到其边界面的光的第二部分的透明部分。 其中，光接收部能够接收在边界面全反射的光，所接收的光具有随着通过半透明反射部分的光的波长变化而变化的光量。 光接收部分还输出具有与光量相关的振幅电平的信号。

公开(公告)号：US10114310B2

公开(公告)日：2018-10-30

申请号：US15337662

申请日：2016-10-28

Applicant: Konica Minolta, Inc.

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

IPC: G03G15/043 ,  H04N1/06 ,  H04N1/29 ,  G06K7/10

Abstract: An optical writing device driving a light-emitting element array, modulating light according to a screening pattern that expresses a dithered image, and performing optical writing by focusing light emitted from the light-emitting element array through a lens array onto a photoreceptor. The optical writing device includes an acquisition unit that acquires a write start position for writing to the photoreceptor in a main scanning direction and a control unit that performs a control when the write start position corresponds to an i-th light-emitting element from a reference position that corresponds to a first light-emitting element in the main scanning direction, i being a positive integer greater than 1, wherein the control unit supplies pixel values to the i-th light-emitting element onwards, the pixel values being assigned from pixels of the screening pattern from an i-th pixel onwards, from a leading pixel of the screening pattern in the main scanning direction.

公开(公告)号：US09921515B2

公开(公告)日：2018-03-20

申请号：US14511205

申请日：2014-10-10

Applicant: KONICA MINOLTA, INC.

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

IPC: G01J5/00 ,  G01K7/00 ,  G03G15/043 ,  G06K15/02 ,  G06K15/12 ,  G01K7/01 ,  G01K7/42

CPC classification number: G03G15/043 ,  B41J2/45 ,  G01K7/01 ,  G01K7/42 ,  G06K15/027 ,  G06K15/1247

Abstract: An optical writing device having; a plurality of light-emitting points; a photodiode configured to output a signal which represents a quantity of incident light from a predetermined light-emitting point selected from the plurality of light-emitting points; and a calculation section for calculating a temperature of the photodiode based on a magnitude of a photodiode dark current included in the signal output from the photodiode while the predetermined light-emitting point is OFF.

公开(公告)号：US09829824B2

公开(公告)日：2017-11-28

申请号：US15352884

申请日：2016-11-16

Applicant: KONICA MINOLTA, INC.

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

IPC: G03G15/043 ,  G03G15/04

CPC classification number: G03G15/043 ,  G03G15/04054

Abstract: An optical writing device including: a current-driven light-emitting element; a thin film transistor configured to supply the light-emitting element with a drive current based on a luminance signal to put the light-emitting element in an on state; and a controller configured to, for each line of an image page, correct a first value of the luminance signal to yield a second value of the luminance signal, and to supply the thin film transistor with the luminance signal at the second value. The second value compensates for a light amount fluctuation of the light-emitting element that is dependent upon an emission/non-emission history, from an initial line of the image page to the line, of a first continuous period where the light-emitting element is kept in the on state and a second continuous period where the light-emitting period is kept in an off state.

公开(公告)号：US09671715B2

公开(公告)日：2017-06-06

申请号：US14932391

申请日：2015-11-04

Applicant: KONICA MINOLTA, INC.

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

IPC: G03G15/04 ,  B41J2/45 ,  G03G15/043

CPC classification number: G03G15/043 ,  G03G15/04045 ,  G03G15/04063

Abstract: An optical writing device performing optical writing onto a photoreceptor, including: a light-emitting unit including a plurality of light-emitting elements that form a plurality of element rows spaced from one another in a sub scanning direction, each of the light-emitting elements having a main scanning direction position differing from a main scanning direction position of any other one of the light-emitting elements; a plurality of signal output units, one for each element row, each outputting a light amount signal for each light-emitting element in a corresponding element row, each light amount signal indicating an amount of light to be emitted by a corresponding light-emitting element; and a plurality of drive units, one for each light-emitting element, each, when receiving a light amount signal for a corresponding light-emitting element, supplying a drive current in accordance with the light amount signal to the corresponding light-emitting element.

公开(公告)号：US20160282751A1

公开(公告)日：2016-09-29

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: B41J2/385

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.

Abstract translation: 1.一种光写入装置，其特征在于，使用发光元件执行光写入，进行光量切换，所述光写入装置包括：单元，估计与所述元件相对应的第一值，使得所述元件在切换后立即发出第一光量; 从切换之后立即向元件提供对应于通过量化第一值获取的第一数字值的电流量; 估计用于保持发射第一光量的元件的电流量的电流量的单元从用于使元件在切换到对应于第二数字值的当前量之后立即发出第一光量的当前量增加的时间量增大 比第一个数字值一步; 以及当切换之后的时间量经过时向元件提供的单元与第二数字值对应的电流量。