公开(公告)号：US20120315056A1

公开(公告)日：2012-12-13

申请号：US13495405

申请日：2012-06-13

申请人： Hideo MUROI ,  Yushi Hirayama ,  Shuji Hirai ,  Hitoshi Ishibashi

发明人： Hideo MUROI ,  Yushi Hirayama ,  Shuji Hirai ,  Hitoshi Ishibashi

IPC分类号： G03G15/00 ,  G01B11/24

CPC分类号： G03G15/5058 ,  G01N21/4738 ,  G01N21/4785 ,  G03G2215/0148

摘要： In an embodiment, a diffuse reflection output conversion method is executed in an apparatus detecting a plurality of gradation patterns. The apparatus includes a light emitter and light receiver, and detects specular reflection and diffuse reflection simultaneously. A region before specular reflection saturation is a region where the specular reflection component decreases and saturates at minimum level. A diffuse reflection detector is calibrated by: obtaining a diffuse reflection output resulting from an amount of attached powder at a border between the region before specular reflection saturation and the region after specular reflection saturation; calculating a ratio between the diffuse reflection output and a reference diffuse reflection output calculated in advance as a calibration coefficient; and multiplying a diffuse reflection output obtained from the gradation patterns by the calibration coefficient calculated at the calculating.

摘要翻译： 在一个实施例中，在检测多个灰度图案的装置中执行漫反射输出转换方法。 该装置包括光发射器和光接收器，同时检测镜面反射和漫反射。 镜面反射饱和之前的区域是镜面反射分量降低并在最小水平饱和的区域。 漫反射检测器通过以下方式来校准：获得由镜面反射饱和之前的区域与镜面反射饱和之后的区域之间的边界处附着的粉末的量产生的漫反射输出; 计算预先计算的漫反射输出与参考漫反射输出之间的比值作为校准系数; 并将从灰度图案获得的漫反射输出乘以在计算时计算的校准系数。

公开(公告)号：US20150234316A1

公开(公告)日：2015-08-20

申请号：US14612466

申请日：2015-02-03

申请人： Hideaki Kanaya ,  Jun Yura ,  Takeshi Uchitani ,  Shunichi Hashimoto ,  Yushi Hirayama ,  Takuya Suganuma ,  Hiroki Ishii ,  Hironobu Takeshita ,  Shogo Kezuka

发明人： Hideaki Kanaya ,  Jun Yura ,  Takeshi Uchitani ,  Shunichi Hashimoto ,  Yushi Hirayama ,  Takuya Suganuma ,  Hiroki Ishii ,  Hironobu Takeshita ,  Shogo Kezuka

IPC分类号： G03G15/08

CPC分类号： G03G15/5058 ,  G03G2215/0132 ,  G03G2215/0164

摘要： An image forming apparatus includes an image bearer, a charger, an exposure device, a developing device, an image density sensor, and a controller. The controller is configured to charge the image bearer, expose the image bearer with a first exposure that saturates potential of the image bearer after exposure to form a latent image pattern on the image bearer, develop the latent image pattern into a toner pattern while changing a developing electrical field, detect a first image density of the toner pattern, determine developing bias and charging bias, form patterns with the first exposure and a second exposure smaller than the first exposure, detect a second image density of the patterns, and determine an exposure to output an image based on the second image density, the first exposure, and the second exposure.

摘要翻译： 图像形成装置包括图像载体，充电器，曝光装置，显影装置，图像浓度传感器和控制器。 控制器被配置为对图像承载进行充电，在曝光之后使图像承载的电位饱和的第一曝光曝光图像载体，以在图像载体上形成潜像图案，将潜像图案变成调色剂图案，同时改变 显影电场，检测调色剂图案的第一图像浓度，确定显影偏压和充电偏压，形成具有第一曝光的图案和小于第一曝光的第二曝光，检测图案的第二图像浓度，并确定曝光 以基于第二图像浓度，第一曝光和第二曝光来输出图像。

公开(公告)号：US07603046B2

公开(公告)日：2009-10-13

申请号：US11464046

申请日：2006-08-11

申请人： Yushi Hirayama

发明人： Yushi Hirayama

IPC分类号： G03G15/08

CPC分类号： G03G15/5058 ,  G03G15/0131 ,  G03G15/0849 ,  G03G15/0855 ,  G03G15/0893 ,  G03G2215/00042 ,  G03G2215/00059 ,  G03G2215/0119

摘要： An image forming apparatus includes a developer container that holds a two-component developer, a toner concentration detector that detects toner concentration in the developer, a toner supplying unit configured to supply new toner to a developing unit, a toner supply controlling unit that compares an output of the toner concentration detector and a toner concentration reference value Vtref to control the toner supplying unit. The image forming apparatus detects an output of the toner concentration sensor with respect to a plurality of linear velocities, and calculates linear velocity shift amounts ΔVt1=(Vt1−Vt0) and ΔVt2=(Vt2−Vt0) to be reflected in a toner supply control parameter.

摘要翻译： 图像形成装置包括保持双组分显影剂的显影剂容器，检测显影剂中的调色剂浓度的调色剂浓度检测器，被配置为向显影单元供应新调色剂的调色剂供给单元，将调色剂供给控制单元 输出调色剂浓度检测器和调色剂浓度基准值Vtref以控制调色剂供应单元。 图像形成装置相对于多个线速度检测调色剂浓度传感器的输出，并计算要反映在调色剂供给控制中的线速度偏移量DeltaVt1 =（Vt1-Vt0）和DeltaVt2 =（Vt2-Vt0） 参数。