Developer collection device and image forming apparatus

An image forming apparatus comprising:

• an image carrier that is configured to carry a latent image formed thereon;
• a developer that is configured to develop the latent image formed on the image carrier into a visible image;
• a transfer device that is configured to transfer the visible image on the image carrier onto a sheet;
• a cleaner that is configured to collect a residue remaining on the image carrier after the visible image is transferred onto the sheet to clean the image carrier;
• an upstream conveying path that is configured to convey the residue collected by the cleaner;
• a collection unit that is supported by a first frame, the collection unit comprising:
• a collection container that contains a developer to be collected;
• an upstream connection part that is formed with an inlet port through which the developer flows in;
• and
• a collection conveying part that conveys the developer flown in through the inlet port toward the collection container;
• and
• a connection unit that is supported by a second frame that is detachable from the first frame, the connection unit comprising:
• an upstream connection port that is connected to the upstream conveying path;
• a connection conveying part that conveys the developer flown in through the upstream connection port in a developer conveying direction;
• and
• a connection outlet port that is formed at a downstream end in the developer conveying direction,
• wherein the connection unit is configured to be movable between an extracted position, at which the connection unit is extracted from the second frame to enter the first frame to connect the connection conveying part with the upstream connection part for connecting the connection outlet port with the inlet port, and a retracted position, at which the connection unit is retracted into the second frame to separate the connection conveying part from the upstream connection part.