| 摘要 |
<P>PROBLEM TO BE SOLVED: To stably obtain sensor outputs when detecting with a plurality of sensors. <P>SOLUTION: The position adjustment device for a sensor-mounted substrate has an attached powder quantity detecting means. This means has, on the same substrate, the plurality of sensors 5, each being composed of a pair of a light emitting element 5a and a light receiving element 5b, emits light from each light emitting element 5a to a powder on an intermediate transfer belt (reflecting body) 13, and reads the level of a light quantity signal by the light receiving elements 5b, thereby detecting an amount of attached powder. The position adjustment device includes: a sensor position shifting means by which the substrate with the sensors 5 mounted on them is shifted parallel to a tangent touching the curved face of the intermediate transfer belt 13; a reflection output detecting means 31 that measures the output signals of all the sensors 5 during the shift, which are detected by the sensors 5 mounted on the substrate; and an arithmetic means that determines the angle of rotation and the position of the substrate in the direction of the tangent, based on the output characteristics of the sensors, measured by the refection output detecting means. <P>COPYRIGHT: (C)2007,JPO&INPIT |
