19-09-2013 дата публикации
Номер: US20130243472A1
An image forming apparatus includes a developing device, a duct, a first fan, a dust collection part, and a connection portion. The duct communicates with a suction port that is provided in the vicinity of an opening portion of a developing container of the developing device. The first fan generates an airflow in the duct and discharges air that has passed through the suction port and through the duct to the outside of a main body of the apparatus. The dust collection part captures toner that has passed through the duct together with an airflow generated by the first fan. The connection portion is provided at some point along a length of the duct, can store part of toner that passes therethrough together with an airflow, and has a lid portion that is openable and closable with respect to a main body of the connection portion. 1. An image forming apparatus , comprising: a developing container that contains toner; and', 'a developing roller that is disposed so as to be opposed to an image carrying member, with part of an outer peripheral surface thereof exposed from an opening portion of said developing container, and supplies toner to the image carrying member;, 'a developing device that includesa duct that communicates with a suction port that is provided in a vicinity of the opening portion of the developing container;a first fan that generates an airflow in said duct and discharges air that has passed through the suction port and through the duct to an outside of a main body of the apparatus;a dust collection part that captures toner that has passed through the duct together with an airflow generated by said first fan; anda connection portion that is provided at some point along a length of the duct, can store part of toner that passes therethrough together with an airflow, and has a main body and a lid portion that is openable and closable with respect to said main body.2. The image forming apparatus according to claim 1 , whereinthe duct has a first duct that ...
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