Invention Grant
US07643766B2 Device for measuring concentration of toner in liquid developer, image forming apparatus provided therewith, and method for measuring toner concentration 失效
用于测量液体显影剂中的调色剂浓度的装置,具有其的图像形成装置以及用于测量调色剂浓度的方法

Device for measuring concentration of toner in liquid developer, image forming apparatus provided therewith, and method for measuring toner concentration
Abstract:
Provided are a light-emitting portion having a light-emitting member and a light emergence surface through which light from the light-emitting member emerges, and a light-receiving portion having a light incidence surface through which the light from the light-emitting member enters and a light-receiving member that detects the light entering through the light incidence surface. The light-emitting portion and the light-receiving portion can make relative movement between a measurement position in which the light emergence surface and the light incidence surface make contact with each other and a waiting position in which the light emergence surface is away from the light incidence surface. When the light-emitting portion and the light-receiving portion are in the measurement position, the light emergence surface and the light incidence surface make contact with each other at a point.
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