| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem of at least 3 or more units of detecting means being required in order to detect color deviation including a scanning curve since the detecting means of an optical method provided with a semiconductive laser and a driving circuit are provided exclusively on a light emitting side in the conventional color deviation detecting means of a tandem method image forming device. SOLUTION: In the device, an exposing means, a means to move an optical path in order to have a laser beam utilized for detection of the color deviation, an image carrier where the laser beam can be transmitted and a light receiving means to receive the laser light that has been transmitted through the image carrier are provided. In this case, the color deviation quantity can be detected with high precision an at a low cost constitution by utilizing the same laser beam for image formation and color deviated quantity detection and the toner quantity necessary for the detection can be decreased. |
