COLOR PICTURE IMAGE FORMATION DEVICE

摘要

PROBLEM TO BE SOLVED: To change over a position of a unit of each color in a short time by a carriage drive mechanism having a simple structure and hold a carriage so that it does not move when power supply is turned off. SOLUTION: A plurality of image formation units 3 including a photosensitive body 30 of each color are mounted around a shaft of a carriage 2 which rotates in such a manner that it can be mounted and dismounted freely. A plurality of image formation units 3 move sequentially between a development position where toner image is formed in the photosensitive body 30 and a refuge position due to the rotation of the carriage 2. A carriage drive mechanism 86 which rotates and drives the carriage 2 includes a worm gear 89.