公开(公告)号：US10003714B2

公开(公告)日：2018-06-19

申请号：US15690089

申请日：2017-08-29

Applicant: KONICA MINOLTA, INC.

Inventor： Tatsuya Eguchi ,  Isao Watanabe ,  Takeshi Ishida ,  Hiroaki Takatsu ,  Taku Kimura ,  Atomu Nakashima

IPC: G03G15/01 ,  H04N1/00 ,  G06K15/00 ,  H04N1/113 ,  G06K15/12 ,  G03G15/04

CPC classification number: H04N1/113 ,  G03G15/04072 ,  G03G15/043 ,  G03G15/50 ,  G03G21/20 ,  G03G2215/0404 ,  G06K15/1204

Abstract: An image forming apparatus includes an acquiring unit configured to acquire atmosphere pressure in the installation place of the image forming apparatus, photoconductors, light sources configured to radiate laser light, and a polygon mirror configured to be rotatable. The polygon mirror exposes the photoconductors by reflecting the laser light toward the photoconductors while rotating. The image forming apparatus further includes a control device configured to control rotation of the polygon mirror. The control device outputs an enable signal for allowing the image forming apparatus to perform printing, if rotation of the polygon mirror is stabilized after start of the rotation, and advances the timing of outputting the enable signal as the atmosphere pressure increases.

公开(公告)号：US09207561B2

公开(公告)日：2015-12-08

申请号：US14490044

申请日：2014-09-18

Applicant: KONICA MINOLTA, INC.

Inventor： Yohei Yamada ,  Tatsuya Eguchi ,  Akimasa Ishikawa

IPC: B41J2/455 ,  B41J2/385 ,  G03G15/043

CPC classification number: G03G15/043

Abstract: An image forming apparatus that forms a color image by layering toner images of different colors includes: a photoreceptor on which an electrostatic latent image is formed through charging and exposure; an exposure unit performing exposure-scanning on the photoreceptor in accordance with image signal; an intensity determination unit determining exposure intensity according to image forming condition; and a timing determination unit determining a timing of inputting image signal for each scanning line, wherein the exposure unit has a delay duration differing depending on the exposure intensity and being from input of image signal of each pixel to be exposed to exposure of the pixel at the exposure intensity, and the timing determination unit obtains the delay duration corresponding to the exposure intensity, and determines the timing such that image signal of an initial pixel to be initially exposed is input the delay duration before the initial pixel is exposed.

Abstract translation: 通过分层不同颜色的调色剂图像形成彩色图像的图像形成装置包括：通过充电和曝光在其上形成静电潜像的感光体; 曝光单元根据图像信号对感光体进行曝光扫描; 强度确定单元，根据图像形成条件确定曝光强度; 以及定时确定单元，确定针对每个扫描线输入图像信号的定时，其中所述曝光单元具有根据所述曝光强度而不同的延迟持续时间，并且来自所述像素的每个像素的图像信号的输入以暴露于所述像素的曝光 曝光强度和定时确定单元获得与曝光强度对应的延迟持续时间，并且确定定时，使得最初曝光的初始像素的图像信号被输入到初始像素曝光之前的延迟持续时间。

公开(公告)号：US20140125751A1

公开(公告)日：2014-05-08

申请号：US14066922

申请日：2013-10-30

Applicant: Konica Minolta, Inc.

Inventor： Akimasa Ishikawa ,  Tatsuya Eguchi ,  Yohei Yamada

IPC: B41J2/385

CPC classification number: G03G15/04072 ,  G03G15/043

Abstract: An image forming apparatus for performing laser exposure is provided. The image forming apparatus includes a driving circuit for supplying drive current to a laser light source in accordance with an image pulse signal; a pulse width expansion portion for expanding a pulse width of the image pulse signal supplied to the driving circuit; and an adjustment control portion for setting, based on state data indicating a state related to light emission start characteristics of the laser light source, a value of the bias current supplied as a part of the drive current to the laser light source and an amount of expansion of the pulse width in such a manner that laser light emission occurs in a period of time having a length equal to a length of a pulse width of each pulse in the image pulse signal.

Abstract translation: 提供了一种用于执行激光曝光的图像形成装置。 图像形成装置包括根据图像脉冲信号向激光光源提供驱动电流的驱动电路; 脉冲宽度扩展部分，用于扩展提供给驱动电路的图像脉冲信号的脉冲宽度; 以及调整控制部分，用于基于指示与激光源的发光开始特性相关的状态的状态数据，将作为驱动电流的一部分提供的偏置电流的值设置到激光光源， 脉冲宽度的扩展使得激光发射在具有等于图像脉冲信号中的每个脉冲的脉冲宽度的长度的时间段内发生。