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：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：US20200253022A1

公开(公告)日：2020-08-06

申请号：US16774530

申请日：2020-01-28

Applicant: Konica Minolta, Inc.

Inventor： Masayuki IIJIMA ,  Takaki UEMURA ,  Yoshikazu WATANABE ,  Sotaro YOKOTA

IPC: H05B47/105 ,  G03G15/043

Abstract: An optical writing device includes a lens, a plurality of light emitting elements that form one pixel on a photoreceptor through the lens, and a control circuit that controls a light emitting state of each of the plurality of light emitting elements. The control circuit controls the light emitting state of each of the plurality of light emitting elements in accordance with an ambient temperature of the plurality of light emitting elements.

公开(公告)号：US20190384204A1

公开(公告)日：2019-12-19

申请号：US16414497

申请日：2019-05-16

Applicant: Konica Minolta, Inc.

Inventor： Yoshikazu WATANABE ,  Sotaro YOKOTA

IPC: G03G15/043 ,  G02B3/00 ,  H05B33/08

Abstract: An optical recording device includes: a lens array in which a plurality of lenses is arranged at least in a main scanning direction; a light emitting element substrate that is arranged in proximity to the lens array, and includes a light emitting element group in which a plurality of light emitting elements forming one pixel is arranged for each lens position of the lens array; and a light emission controller that controls the light emitting elements, wherein, in the light emitting element substrate, at least a light emitting element arranged on an end side in the main scanning direction is a special light emitting element, and the light emission controller is able to adjust an irradiation position irradiated with light from the special light emitting element through the lens array by selectively allowing a plurality of light sources in the special light emitting element to emit light.

公开(公告)号：US20150239258A1

公开(公告)日：2015-08-27

申请号：US14619476

申请日：2015-02-11

Applicant: Konica Minolta, Inc.

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

IPC: B41J2/45

CPC classification number: B41J2/45

Abstract: An optical print head performs optical writing onto target, and includes: current-driven light-emitting elements arranged in rows in a predetermined direction; driving transistors that are each electrically series-connected with the light-emitting elements in one-to-one correspondence, and each supply a driving current to a corresponding light-emitting element; a current control unit that controls, for each light-emitting element, a driving current amount in accordance with variation in light-emitting properties of the light-emitting element that indicate relation between the driving current amount and a light amount emitted by the light-emitting element; an application unit that, upon receiving electrical power supplied from an external power source, applies application voltage to circuits each consisting of a light-emitting element and a corresponding driving transistor; and a voltage control unit that suppresses variation in divided voltage applied to each driving transistor by controlling the application unit to apply increased application voltage of the driving current amount increases.

Abstract translation: 光学打印头对目标进行光学写入，并且包括：沿预定方向排成行的电流驱动发光元件; 驱动晶体管与发光元件电连接一一对应，并且各自向对应的发光元件提供驱动电流; 电流控制单元，对于每个发光元件，根据表示驱动电流量与由发光元件发射的光量之间的关系的发光元件的发光特性的变化来控制驱动电流量， 发光元件; 应用单元，在接收到从外部电源供给的电力时，对由发光元件和相应的驱动晶体管组成的电路施加施加电压; 以及电压控制单元，其通过控制施加单元施加增加的驱动电流量的施加电压来抑制施加到每个驱动晶体管的分压的变化。

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.

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：US20140232805A1

公开(公告)日：2014-08-21

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

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; 以及用于控制驱动电路的控制电路，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参考值的值一致。 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：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。