Patent ID: 8014700

Claim:
An image forming apparatus comprising: a plurality of image bearing members; a plurality of primary transferring devices for transferring toner images from said image bearing member onto an intermediary transfer belt provided above said plurality of image bearing members; an intermediary transfer unit including said intermediary transfer belt; a secondary transfer portion for transferring the toner image from said intermediary transfer belt onto a recording material; a feeding path for feeding the recording material upwardly toward said secondary transfer portion; a detecting member for detecting the toner image formed on said intermediary transfer belt; an adjusting device for adjusting a condition under which the image is formed on said image bearing member on the basis of a result of detection of said detecting member; an openable member for opening said feeding path; a guiding mechanism for guiding draw of said intermediary transfer unit toward said feeding path when said openable member opens; and a retracting mechanism for retracting said detecting member away from said intermediary transfer unit with movement of said intermediary transfer unit toward said feeding path.