Patent ID: 8870317
Filing Date: 2014-10-28
Classification: B41J

Abstract:
1. An image forming apparatus comprising: an apparatus body; a recording head to eject liquid droplets; a head tank to store liquid to be supplied to the recording head; a carriage mounting the recording head and the head tank; a main tank to store the liquid to be supplied to the head tank; a liquid feed device to supply the liquid from the main tank to the head tank; a supply controller to control driving of the liquid feed device to supply the liquid from the main tank to the head tank; a displacement member provided at the head tank and displaceable with a remaining amount of the liquid in the head tank; a first detector mounted on the carriage to detect a first position of the displacement member; and a second detector mounted on the apparatus body to detect a second position of the displacement member, wherein the supply controller detects and retains a differential supply amount corresponding to a displacement amount of the displacement member between the first position and the second position, when the first position of the displacement member is detected with the first detector, the remaining amount of the liquid in the head tank is smaller than when the second position of the displacement member is detected with the second detector, after the printing operation is performed,