公开(公告)号：US20120237246A1

公开(公告)日：2012-09-20

申请号：US13347739

申请日：2012-01-11

申请人： Yoshitaka Taishi ,  Hajime Kawai

发明人： Yoshitaka Taishi ,  Hajime Kawai

IPC分类号： G03G15/00

CPC分类号： G03G15/5058 ,  G03G15/0194

摘要： A toner density sensor has a light emitting unit that emits light to detect toner density, a light receiving unit that receives the light emitted from the light emitting unit and reflected from a detection target, and a board on which the light emitting unit and the light receiving unit are surface-mounted. A penetration space that penetrates the board in a thickness direction is formed in at least one of portions in which the light emitting unit and the light receiving unit are attached to the board.

摘要翻译： 调色剂浓度传感器具有发光以检测调色剂浓度的发光单元，接收从发光单元发射并从检测对象反射的光的光接收单元，以及发光单元和光 接收单元是表面安装的。 在发光单元和光接收单元附接到板的部分中的至少一个中形成有沿厚度方向穿透板的穿透空间。