| 摘要 |
<P>PROBLEM TO BE SOLVED: To simplify and downsize a density adjustment device used for adjusting the density and liquid level of a liquid developer. <P>SOLUTION: A density adjustment device includes: a first reflection part 824Y that is disposed in a reservoir 87Y and reflects a vibration generated by a vibration part; a second reflection part 83Y that moves based on a liquid level of a liquid developer reserved in a reservoir to reflect the vibration generated by the vibration part; and an operation part that calculates information of toner concentration of the liquid developer reserved in the reservoir on the basis of first feedback time from a vibration generated by the vibration part and moving in the liquid developer reserved in the reservoir to be received by a reception part after reflected by the first reflection part and calculates information of a level of the liquid developer reserved in the reservoir on the basis of second feedback time from the vibration generated by the vibration part and moving in the liquid developer reserved in the reservoir to be received by the reception part after reflected by the second reflection part. <P>COPYRIGHT: (C)2012,JPO&INPIT |
