公开(公告)号：US07734229B2

公开(公告)日：2010-06-08

申请号：US11879925

申请日：2007-07-19

申请人： Tatsuya Tanaka ,  Kyosuke Taka ,  Takashi Kitagawa

发明人： Tatsuya Tanaka ,  Kyosuke Taka ,  Takashi Kitagawa

IPC分类号： G03G15/08

CPC分类号： G03G15/556 ,  G03G15/0853 ,  G03G15/0893 ,  G03G15/553

摘要： A pixel count section calculates a coverage rate corresponding to toner consumption. A control coefficient value setting section determines, based on the coverage rate, a stop threshold value representing reference concentration for toner replenishment and replenishment extension time. A magnetic permeability sensor measures permeability representing toner concentration in a housing portion. A toner concentration control section starts toner replenishment when an output value from the magnetic permeability sensor varies from a value less than a start threshold value to the start threshold value or above, and stops toner replenishment after lapse of replenishment extension time from the time at which an output value varied from a value greater than the stop threshold value to the stop threshold value.

摘要翻译： 像素计数部分计算对应于墨粉消耗的覆盖率。 控制系数值设定部根据覆盖率确定表示调色剂补充和补充延长时间的参照浓度的停止阈值。 磁导率传感器测量表示壳体部分中的调色剂浓度的磁导率。 当来自磁导率传感器的输出值从小于开始阈值的值变为开始阈值以上时，调色剂浓度控制部开始调色剂补充，并且在从补充延长时间开始经过补充延长时间之后停止调色剂补充 输出值从大于停止阈值的值变化到停止阈值。

公开(公告)号：US20070052988A1

公开(公告)日：2007-03-08

申请号：US11514211

申请日：2006-09-01

申请人： Tomoe Matsuoka ,  Tatsuya Tanaka ,  Kyosuke Taka

发明人： Tomoe Matsuoka ,  Tatsuya Tanaka ,  Kyosuke Taka

IPC分类号： G06F15/00

CPC分类号： H04N1/6022 ,  H04N1/6097

摘要： An image processing apparatus of the present invention includes: a signal correction means which corrects, in an RGB color space, RGB tone data which is RGB image data; and a comparison section which compares (i) a tonal value of a white point which is neither an origin nor maximum tonal values of R, G, and B in the RGB color space, and where tonal values of R, G, and B are identical to one another, with (ii) respective tonal values of R, G, B of the RGB tone data. (A) In case where the tonal values of R, G, and B are determined to be larger than the white point, the signal correction means corrects the tonal values of R, G, and B to be close to the white point. (B) In case where the tonal values of R, G, and B of the RGB tone data is determined to be smaller than the white point, the signal correction section corrects they tonal values of R, G, and B of the RGB tone data to be away from the white point. As a result, undercolor processing is precisely executed while the color reproducibility in a highlight is maintained.

摘要翻译： 本发明的图像处理装置包括：信号校正装置，其在RGB颜色空间中校正作为RGB图像数据的RGB色调数据; 和比较部分，其比较（i）在RGB颜色空间中既不是原点也不是R，G和B的最大色调值的白点的色调值，并且R，G和B的色调值是 与（ii）RGB色调数据的R，G，B的各自的色调值相同。 （A）当确定R，G和B的色调值大于白点的情况下，信号校正装置将R，G和B的色调值校正为接近于白点。 （B）当RGB色调数据的R，G和B的色调值被确定为小于白点的情况下，信号校正部分校正RGB色调的R，G和B的色调值 数据远离白点。 结果，在保持高亮度的颜色再现性的同时精确地执行底色处理。

公开(公告)号：US5751431A

公开(公告)日：1998-05-12

申请号：US607484

申请日：1996-02-27

申请人： Kyosuke Taka ,  Keiji Masuda ,  Kan Mukai

发明人： Kyosuke Taka ,  Keiji Masuda ,  Kan Mukai

IPC分类号： G03G15/00 ,  G03G15/04 ,  H04N1/00 ,  H04N1/04 ,  H04N1/29 ,  G03G21/00

CPC分类号： H04N1/00543

摘要： A digital image forming apparatus equipped with an optical scanner unit which is detachable from a main body includes an upper image reading section and a lower part image forming section. The apparatus is arranged such that the optical scanner unit can be installed and removed in and from the apparatus in a vertical direction, and can be removed through an opening provided for removing the image forming section therethrough. According to the described arrangement, during the installation and removal of the optical scanner unit, removal of the image reading section and a special opening for the optical scanner unit are not required, thereby reducing the restriction on structural design of the apparatus and permitting easy installation and removal of the optical scanner unit. As a result, the maintenance of the apparatus can be performed with an improved efficiency.

摘要翻译： 配备有可从主体拆卸的光学扫描器单元的数字图像形成装置包括上部图像读取部和下部图像形成部。 该装置被布置成使得光学扫描器单元可以在垂直方向上安装和拆卸设备，并且可以通过用于通过其移除图像形成部分的开口去除。 根据上述的结构，在安装和拆卸光学扫描器单元期间，不需要去除图像读取部分和用于光学扫描器单元的特殊开口，从而减少对装置的结构设计的限制并允许容易的安装 并移除光学扫描仪单元。 结果，可以以提高的效率进行设备的维护。