Patent ID: 8107874
Filing Date: 2012-01-31
Classification: B41J

Abstract:
1. An image forming apparatus, comprising: a printing medium guide device to guide a printing medium in a print path to a discharge path and to guide the printing medium in the discharge path to a reverse path, wherein the printing medium guide device includes an arm, a supporting shaft about which the arm rotates, and rollers at an end of the arm opposite the supporting shaft to rotate by contacting the printing medium, the arm including a curved portion on one side to receive the printing medium at a location between the supporting shaft and the rollers and to guide the printing medium across the rollers toward the discharge path, wherein the printing medium guide device further comprises: an actuating portion which extends from the supporting shaft so that a rotational position of the printing medium guide portion can be detected by a sensor; a rotation limit protrusion provided on the actuating portion; and a rotation limit slot provided at a supporting plate supporting the supporting shaft and in which the rotation limit protrusion is disposed, and to limit a rotational range of the printing medium guide device to a predetermined range, wherein the supporting shaft is rotatably mounted near an outlet of the print path, and wherein the arm includes at least one printing medium guide portion which extends from the supporting shaft to rotate on the supporting shaft.