The gates are mounted on a roller that stops the paper for skew correction. The roller is raised and lowered by the registration timing motor.
There are two shift units used to position the paper for image registration. The LE (leading edge) shift unit [A], located near the leading edge of the paper at the registration gate roller, grips the paper and adjusts the position in the main scan direction (front-to-rear). The TE (trailing edge) shift unit [B] (at the right toward the trailing edge) performs the same function. However, the TE shift unit operates only for paper larger than A4 SEF.