Patent ID: 9188952
Filing Date: 2015-11-17
Classification: G03G

Abstract:
1. A toner collecting device, comprising: a housing; an inlet which is provided in the housing and into which toner flows together with an air flow; a fan arranged in an interior of the housing and configured to suck the air flow flowing from the inlet and to exhaust the air flow outside the housing; a guide duct portion arranged between the inlet and the fan in a path of the air flow and is configured to guide the air flow upward from below; a first filter arranged upstream of the fan in the path of the air flow and in an upper part of the guide duct portion so that its approach surface, which the air flow enters, faces downward; an oscillation section configured to oscillate the first filter; a second filter arranged between the fan and the first filter in the path of the air flow and configured to catch the toner and to allow the air flow to pass therethrough; and a third filter arranged downstream of the fan in the path of the air flow and configured to allow the air flow to pass therethrough; wherein a relationship, A2≧A1≧A3 is satisfied where A1 is a flow rate of the air flow in the first filter, A2 is a flow rate thereof in the second filter, and A3 is a flow rate thereof in the third filter.