Patent ID: 7957670
Filing Date: 2011-06-07
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a plurality of process units disposed in a row in a horizontal direction; a plurality of latent image carriers such that each of the plurality of process units include a respective one of the plurality of latent image carriers; an optical writing unit that writes latent images on surfaces of the plurality of latent image carriers; an upper cover including a cover frame which is fixed to a rear side of the upper cover and that holds the optical writing unit; a pitch positioning member including a plurality of abutting portions so as to regulate movements of the plurality of process units in the horizontal direction by abutting each of the plurality of process units to the plurality of abutting portions, the pitch positioning member including a plurality of notches extending from an upper portion to a lower portion of each of the respective plurality of abutting portions with a predetermined pitch, wherein the optical writing unit is moveable between a waiting position where the optical writing unit does not face the horizontally-aligned process units and an operating position where the optical writing unit faces each of the process units, the optical writing unit moves between the waiting position and the operating position in accordance with an opening operation and a closing operation of the upper cover, and the pitch positioning member is on a facing surface of a side plate.